{"id":12605,"date":"2026-03-24T06:35:00","date_gmt":"2026-03-24T06:35:00","guid":{"rendered":"https:\/\/hlh-js.com\/?p=12605"},"modified":"2026-03-24T06:35:00","modified_gmt":"2026-03-24T06:35:00","slug":"zirconia-beads-for-coating-removal","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/ja\/resource\/blog\/zirconia-beads-for-coating-removal\/","title":{"rendered":"Zirconia Beads for\u00a0Coating Removal"},"content":{"rendered":"<!--\n  ============================================================\n  CLUSTER PAGE 4: Zirconia Beads for Coating Removal\n  Jiangsu Henglihong Technology Co., Ltd.\n  Target URL: https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-coating-removal\/\n  Word count: ~3200 words\n  Internal links:\n    \u2192 Pillar:    https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads\/\n    \u2192 Cluster 1: https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-shot-peening\/\n    \u2192 Cluster 3: https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-surface-polishing\/\n    \u2192 Cluster 5: https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-industrial-cleaning-and-surface-preparation\/\n    \u2192 Cluster 6: https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-vs-glass-beads-vs-steel-shot\/\n  ============================================================\n\n  SEO META RECOMMENDATIONS:\n  -------------------------------------------------------\n  Title Tag:\n    Zirconia Beads for Coating Removal \u2014 Selective Stripping Without Substrate Damage\n  Meta Description (\u2264160 chars):\n    How YSZ zirconia beads strip TBC, hard chrome, anodizing & paint without\n    damaging substrates. Full guide for aerospace, automotive & industrial\n    applications. By Henglihong.\n  Focus Keyword: zirconia beads coating removal\n  Secondary Keywords: zirconia bead blasting coating removal, YSZ TBC stripping,\n    ceramic bead paint removal, zirconia chrome stripping, aerospace coating\n    removal media, selective coating stripping\n  Schema: Article + FAQPage\n  Canonical: https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-coating-removal\/\n  OG Image: 1200\u00d7630 \u2014 turbine blade mid-strip with TBC partially removed,\n    clean metal substrate visible alongside remaining coating\n  -------------------------------------------------------\n-->\n\n<style>\n  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }\n\n  :root {\n    --ink:        #0f1923;\n    --ink-light:  #3a4a5c;\n    --muted:      #6b7d8f;\n    --rule:       #dde3ea;\n    --bg:         #ffffff;\n    --surface:    #f5f7fa;\n    --accent:     #0057b8;\n    --accent-dk:  #003d85;\n    --accent-lt:  #e6f0ff;\n    --gold:       #c8902a;\n    --gold-lt:    #fdf4e3;\n    --green:      #1a7a4a;\n    --green-lt:   #eaf5ef;\n    --orange:     #b84500;\n    --orange-lt:  #fff5ee;\n    --red:        #c0392b;\n    --red-lt:     #fdf0ef;\n    --slate:      #2d4a6e;\n    --slate-lt:   #eef3fa;\n    --radius-sm:  6px;\n    --radius-md:  12px;\n    --radius-lg:  20px;\n    --shadow-sm:  0 2px 8px rgba(0,0,0,.06);\n    --shadow-md:  0 6px 24px rgba(0,0,0,.09);\n    --font-body:  'Georgia','Times New Roman',serif;\n    --font-ui:    system-ui,-apple-system,'Segoe UI',sans-serif;\n    --max-w:      780px;\n    --max-w-wide: 1060px;\n  }\n\n  body { font-family: var(--font-body); 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border: 2px solid rgba(255,255,255,.5); margin-left: 12px; }\n\n  @media (max-width: 640px) {\n    .hlh-hero { padding: 40px 28px 36px; }\n    .hlh-cta  { padding: 36px 24px; }\n    .hlh-cta .hlh-btn.outline { margin-left: 0; margin-top: 10px; display: block; width: fit-content; margin: 10px auto 0; }\n    .hlh-pillar-banner { flex-direction: column; gap: 10px; }\n  }\n<\/style>\n\n<div class=\"hlh-article\">\n\n  <!-- \u2550\u2550\u2550 HERO \u2550\u2550\u2550 -->\n  <div class=\"hlh-hero\">\n    <div class=\"hlh-hero-tag\">Cluster Guide \u00b7 Coating Removal<\/div>\n    <h1>Zirconia Beads for <em>\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u9664\u53bb<\/em>: Selective Stripping Without Substrate Damage<\/h1>\n    <p class=\"hlh-hero-sub\">How YSZ zirconia beads strip thermal barrier coatings, hard chrome, anodizing, paint, and powder coatings from aerospace, industrial, and automotive components \u2014 with dimensional fidelity and zero substrate contamination.<\/p>\n    <div class=\"hlh-hero-meta\">\n      <div class=\"hlh-hero-meta-item\">&#128197; <strong>Updated 2026<\/strong><\/div>\n      <div class=\"hlh-hero-meta-item\">&#9200; <strong>~16 min read<\/strong><\/div>\n      <div class=\"hlh-hero-meta-item\">&#127981; <strong>\u6c5f\u8607\u6052\u9686\u79d1\u6280\u6709\u9650\u516c\u53f8<\/strong><\/div>\n    <\/div>\n  <\/div>\n\n  <!-- \u2550\u2550\u2550 TOC \u2550\u2550\u2550 -->\n  <div class=\"hlh-inner\">\n    <nav class=\"hlh-toc\" aria-label=\"Table of Contents\">\n      <div class=\"hlh-toc-title\">&#9776;&nbsp; Table of Contents<\/div>\n      <ol>\n        <li><a href=\"#why-coating-removal-matters\">Why Coating Removal Matters in Precision Manufacturing<\/a><\/li>\n        <li><a href=\"#how-it-works\">How Zirconia Bead Blasting Removes Coatings<\/a><\/li>\n        <li><a href=\"#coating-types\">Coating Types and YSZ Stripping Parameters<\/a>\n          <ol>\n            <li><a href=\"#tbc\">Thermal Barrier Coatings (TBC)<\/a><\/li>\n            <li><a href=\"#hard-chrome\">Hard Chrome Plating<\/a><\/li>\n            <li><a href=\"#anodizing\">\u967d\u6975\u9178\u5316\u51e6\u7406<\/a><\/li>\n            <li><a href=\"#paint-powder\">Paint &amp; Powder Coatings<\/a><\/li>\n            <li><a href=\"#thermal-spray\">Thermal Spray Coatings<\/a><\/li>\n          <\/ol>\n        <\/li>\n        <li><a href=\"#vs-alternatives\">Zirconia Beads vs Chemical Stripping vs Angular Grit<\/a><\/li>\n        <li><a href=\"#process-parameters\">Process Parameters for Coating Removal<\/a><\/li>\n        <li><a href=\"#substrate-protection\">Substrate Protection \u2014 How to Avoid Damage<\/a><\/li>\n        <li><a href=\"#post-strip\">Post-Strip Surface Preparation<\/a><\/li>\n        <li><a href=\"#industry-applications\">\u7523\u696d\u7528\u9014<\/a><\/li>\n        <li><a href=\"#faq\">\u3088\u304f\u3042\u308b\u8cea\u554f<\/a><\/li>\n      <\/ol>\n    <\/nav>\n\n    <!-- \u2550\u2550\u2550 SECTION 1 \u2550\u2550\u2550 -->\n    <h2 id=\"why-coating-removal-matters\">1. Why Coating Removal Matters in Precision Manufacturing<\/h2>\n\n    <p>Coatings are not permanent. Every industrial coating \u2014 however well applied \u2014 reaches the end of its service life through wear, thermal cycling, impact damage, corrosion undercutting, or simply scheduled maintenance interval. When that moment arrives, the coating must be removed completely and the substrate returned to a defined condition before re-coating or return to service.<\/p>\n\n    <p>This is rarely straightforward. The challenge in coating removal is not simply stripping the coating \u2014 it is stripping it <em>selectively<\/em>: removing the coating fully while preserving the substrate&#8217;s dimensional integrity, surface metallurgy, and mechanical properties. Fail on the first count, and residual coating causes adhesion failure of the replacement coating. Fail on the second, and the substrate is eroded below minimum thickness tolerance, requiring expensive rework or scrap.<\/p>\n\n    <div class=\"hlh-callout orange\">\n      <div class=\"hlh-callout-icon\">&#9992;<\/div>\n      <div class=\"hlh-callout-body\">\n        <strong>The Aerospace Maintenance Challenge<\/strong>\n        A commercial turbine blade undergoes thermal barrier coating (TBC) removal and re-application every 12,000\u201325,000 flight hours as part of its overhaul cycle. Over a blade&#8217;s service life of 60,000\u2013100,000 hours, it may be stripped and re-coated four to six times. Each strip cycle must remove the TBC completely without eroding the bond coat or nickel superalloy substrate. Cumulative substrate material loss must remain within the OEM&#8217;s dimensional limits across all strip cycles combined \u2014 typically a total allowance of 25\u201375 \u00b5m on critical airfoil surfaces.\n      <\/div>\n    <\/div>\n\n    <p>The method of coating removal is therefore a critical process engineering decision, not a maintenance afterthought. Zirconia bead blasting has become the preferred method for coating removal on precision, high-value components because it achieves full coating removal with the lowest substrate erosion rate of any mechanical stripping method \u2014 and without the chemical hazards, environmental liabilities, and hydrogen embrittlement risks of wet chemical stripping.<\/p>\n\n    <!-- \u2550\u2550\u2550 SECTION 2 \u2550\u2550\u2550 -->\n    <h2 id=\"how-it-works\">2. How Zirconia Bead Blasting Removes Coatings<\/h2>\n\n    <p>Coating removal by bead blasting exploits a fundamental difference in mechanical properties between the coating and the substrate. Most industrial coatings are harder or more brittle than the metallic substrate they protect \u2014 TBC ceramic top coats, hard chrome plating, anodized aluminium oxide layers, and cured paint all fracture and spall when subjected to repeated impact energy. The metallic substrate, being ductile, deforms plastically rather than fracturing under the same impact conditions.<\/p>\n\n    <p>YSZ beads, directed at a coated surface at controlled velocity, deliver impact energy that exceeds the fracture threshold of the coating while remaining below the yield stress of the substrate. The coating shatters and spalls away in fragments; the substrate dimples slightly but retains its dimensions. The key process variables \u2014 bead size, velocity (blast pressure), angle, and dwell time \u2014 are tuned to maximise coating removal rate while minimising substrate material loss.<\/p>\n\n    <div class=\"hlh-callout slate\">\n      <div class=\"hlh-callout-icon\">&#128300;<\/div>\n      <div class=\"hlh-callout-body\">\n        <strong>The Selectivity Mechanism: Hardness and Fracture Toughness<\/strong>\n        Ceramic TBC top coats (typically yttria-stabilised zirconia \u2014 the same material as the bead, but in a different form) have low fracture toughness (K\u2081c \u2248 1\u20132 MPa\u00b7m\u00bd). Metallic substrates such as IN-738 nickel superalloy have K\u2081c of 20\u201350 MPa\u00b7m\u00bd. This 10\u201325\u00d7 difference in crack resistance means that at a given impact energy, the coating fractures and is removed while the substrate plastically deforms and survives. YSZ beads at 6\u201312 MPa\u00b7m\u00bd fracture toughness are hard enough to fracture the coating but tough enough to survive thousands of impact cycles themselves.\n      <\/div>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 SECTION 3 \u2550\u2550\u2550 -->\n    <h2 id=\"coating-types\">3. Coating Types and YSZ Stripping Parameters<\/h2>\n\n    <p>Different coating systems have different adhesion strengths, thicknesses, hardnesses, and fracture characteristics \u2014 all of which affect the optimal YSZ stripping parameters. The six most common coating types encountered in industrial maintenance and aerospace overhaul are covered below.<\/p>\n\n    <div class=\"hlh-coating-grid\">\n\n      <div class=\"hlh-coating-card tbc\" id=\"tbc\">\n        <span class=\"hlh-coating-icon\">&#128293;<\/span>\n        <div class=\"hlh-coating-type\">Aerospace \/ Power Generation<\/div>\n        <div class=\"hlh-coating-name\">Thermal Barrier Coatings (TBC)<\/div>\n        <div class=\"hlh-coating-desc\">Ceramic top coats (typically 7\u20138 wt% YSZ, 100\u2013300 \u00b5m thick) applied by air plasma spray (APS) or electron-beam physical vapour deposition (EB-PVD) over a metallic bond coat. Brittle, low fracture toughness \u2014 ideal candidate for bead blast stripping. Bond coat (MCrAlY, 50\u2013150 \u00b5m) must be preserved or stripped separately depending on refurbishment scope.<\/div>\n        <div class=\"hlh-coating-param\">\n          <strong>YSZ Bead Parameters<\/strong>\n          Size: 0.2 \u2013 0.6 mm &nbsp;|&nbsp; Pressure: 2.0 \u2013 3.5 bar &nbsp;|&nbsp; Angle: 60\u201380\u00b0 &nbsp;|&nbsp; Substrate loss: &lt;5 \u00b5m per strip cycle\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-coating-card chrome\" id=\"hard-chrome\">\n        <span class=\"hlh-coating-icon\">&#128312;<\/span>\n        <div class=\"hlh-coating-type\">Industrial \/ Aerospace<\/div>\n        <div class=\"hlh-coating-name\">Hard Chrome Plating<\/div>\n        <div class=\"hlh-coating-desc\">Electrodeposited chromium (typically 12\u2013250 \u00b5m thick, 800\u20131000 HV) applied for wear and corrosion resistance on hydraulic rods, landing gear, and industrial shafting. Removal traditionally required toxic chromic acid bath stripping. YSZ bead blasting provides a chemical-free alternative that removes chrome mechanically without hydrogen embrittlement risk to high-strength steel substrates.<\/div>\n        <div class=\"hlh-coating-param\">\n          <strong>YSZ Bead Parameters<\/strong>\n          Size: 0.3 \u2013 0.8 mm &nbsp;|&nbsp; Pressure: 3.0 \u2013 4.5 bar &nbsp;|&nbsp; Angle: 75\u201390\u00b0 &nbsp;|&nbsp; Note: multiple passes required for thick deposits\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-coating-card anodize\" id=\"anodizing\">\n        <span class=\"hlh-coating-icon\">&#128308;<\/span>\n        <div class=\"hlh-coating-type\">Aerospace \/ Automotive \/ Electronics<\/div>\n        <div class=\"hlh-coating-name\">Anodizing (Type II &amp; III)<\/div>\n        <div class=\"hlh-coating-desc\">Aluminium oxide layer formed electrochemically on aluminium alloys. Type II (decorative): 5\u201325 \u00b5m. Type III (hard anodize): 25\u201375 \u00b5m, very high hardness (HV 400\u2013600). Removal required before re-anodizing, welding, or dimensional rework. YSZ blasting strips the anodize layer without removing measurable aluminium substrate at correct parameters.<\/div>\n        <div class=\"hlh-coating-param\">\n          <strong>YSZ Bead Parameters<\/strong>\n          Size: 0.1 \u2013 0.3 mm &nbsp;|&nbsp; Pressure: 1.5 \u2013 2.5 bar &nbsp;|&nbsp; Angle: 60\u201375\u00b0 &nbsp;|&nbsp; Substrate loss: &lt;2 \u00b5m typical\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-coating-card paint\" id=\"paint-powder\">\n        <span class=\"hlh-coating-icon\">&#127912;<\/span>\n        <div class=\"hlh-coating-type\">Automotive \/ Industrial \/ Aerospace<\/div>\n        <div class=\"hlh-coating-name\">Paint &amp; Powder Coatings<\/div>\n        <div class=\"hlh-coating-desc\">Organic coating systems \u2014 epoxy primers, polyurethane topcoats, powder coatings \u2014 typically 50\u2013300 \u00b5m total system thickness. Generally lower adhesion than metallic coatings; respond well to bead blasting at moderate pressures. Important for automotive refinishing, aviation livery change, and industrial equipment maintenance without solvent stripping.<\/div>\n        <div class=\"hlh-coating-param\">\n          <strong>YSZ Bead Parameters<\/strong>\n          Size: 0.3 \u2013 1.0 mm &nbsp;|&nbsp; Pressure: 2.0 \u2013 3.5 bar &nbsp;|&nbsp; Angle: 45\u201375\u00b0 &nbsp;|&nbsp; Most efficient at 45\u201360\u00b0 impact angle\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-coating-card thermal\" id=\"thermal-spray\">\n        <span class=\"hlh-coating-icon\">&#128293;<\/span>\n        <div class=\"hlh-coating-type\">Industrial \/ Power Generation<\/div>\n        <div class=\"hlh-coating-name\">Thermal Spray Coatings (HVOF \/ Plasma)<\/div>\n        <div class=\"hlh-coating-desc\">Metallic or cermet coatings (WC-Co, Cr\u2082C\u2083, NiCrAlY) applied by HVOF or plasma spray for wear and oxidation protection. Typically 100\u2013500 \u00b5m thick, high hardness (WC-Co: 1000\u20131200 HV). Requires higher bead energy for removal; coarser YSZ beads at higher pressure combined with robotic blasting for consistent coverage.<\/div>\n        <div class=\"hlh-coating-param\">\n          <strong>YSZ Bead Parameters<\/strong>\n          Size: 0.5 \u2013 1.2 mm &nbsp;|&nbsp; Pressure: 3.5 \u2013 5.0 bar &nbsp;|&nbsp; Angle: 80\u201390\u00b0 &nbsp;|&nbsp; Multiple passes; monitor substrate temperature\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-coating-card plasma\" id=\"plasma-nitride\">\n        <span class=\"hlh-coating-icon\">&#128302;<\/span>\n        <div class=\"hlh-coating-type\">Tooling \/ Industrial Machinery<\/div>\n        <div class=\"hlh-coating-name\">PVD \/ CVD Hard Coatings (TiN, TiAlN, DLC)<\/div>\n        <div class=\"hlh-coating-desc\">Ultra-thin (1\u201310 \u00b5m) but very hard (HV 2000\u20133000) coatings applied to cutting tools, molds, and precision components. Removal typically required before tool re-sharpening or mould repair. Requires fine YSZ beads at very controlled pressure \u2014 the thin coating means the process window between full removal and substrate damage is narrow.<\/div>\n        <div class=\"hlh-coating-param\">\n          <strong>YSZ Bead Parameters<\/strong>\n          Size: 0.05 \u2013 0.15 mm &nbsp;|&nbsp; Pressure: 1.5 \u2013 2.5 bar &nbsp;|&nbsp; Angle: 60\u201375\u00b0 &nbsp;|&nbsp; Tightest process window \u2014 trial strips mandatory\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 SECTION 4 \u2550\u2550\u2550 -->\n    <h2 id=\"vs-alternatives\">4. Zirconia Beads vs Chemical Stripping vs Angular Grit<\/h2>\n\n    <p>Three principal methods exist for industrial coating removal. Each has a defined cost-performance profile. Understanding the trade-offs is essential for selecting the right method \u2014 or the right combination of methods \u2014 for a specific application.<\/p>\n\n    <div class=\"hlh-method-row\">\n      <div class=\"hlh-method-col\">\n        <div class=\"hlh-method-col-head\">&#9679; Evaluation Criterion<\/div>\n        <div class=\"hlh-method-col-body\">\n          <ul>\n            <li>Substrate material loss<\/li>\n            <li>Dimensional tolerance preservation<\/li>\n            <li>Hydrogen embrittlement risk<\/li>\n            <li>Environmental \/ HSE impact<\/li>\n            <li>Contamination introduced<\/li>\n            <li>Complex geometry access<\/li>\n            <li>Processing speed<\/li>\n            <li>Equipment capital cost<\/li>\n            <li>Cost per component<\/li>\n          <\/ul>\n        <\/div>\n      <\/div>\n      <div class=\"hlh-method-col\">\n        <div class=\"hlh-method-col-head\" style=\"color:var(--orange);\">&#9632; YSZ Bead Blasting<\/div>\n        <div class=\"hlh-method-col-body\">\n          <ul>\n            <li><span class=\"hlh-badge best\">&lt;5 \u00b5m\/cycle<\/span><\/li>\n            <li><span class=\"hlh-badge best\">\u7d20\u6674\u3089\u3057\u3044<\/span><\/li>\n            <li><span class=\"hlh-badge best\">\u306a\u3057<\/span><\/li>\n            <li><span class=\"hlh-badge best\">Low (dry process)<\/span><\/li>\n            <li><span class=\"hlh-badge best\">None (ZrO\u2082 only)<\/span><\/li>\n            <li><span class=\"hlh-badge good\">Good with robotics<\/span><\/li>\n            <li><span class=\"hlh-badge good\">Medium\u2013Fast<\/span><\/li>\n            <li><span class=\"hlh-badge avg\">Medium<\/span><\/li>\n            <li><span class=\"hlh-badge good\">Low\u2013Medium<\/span><\/li>\n          <\/ul>\n        <\/div>\n      <\/div>\n      <div class=\"hlh-method-col\">\n        <div class=\"hlh-method-col-head\" style=\"color:var(--slate);\">&#9632; Chemical Stripping<\/div>\n        <div class=\"hlh-method-col-body\">\n          <ul>\n            <li><span class=\"hlh-badge best\">Near zero<\/span><\/li>\n            <li><span class=\"hlh-badge best\">\u7d20\u6674\u3089\u3057\u3044<\/span><\/li>\n            <li><span class=\"hlh-badge low\">High (acid baths)<\/span><\/li>\n            <li><span class=\"hlh-badge low\">Very high (hazmat)<\/span><\/li>\n            <li><span class=\"hlh-badge avg\">\u6b8b\u7559\u5316\u5b66\u7269\u8cea<\/span><\/li>\n            <li><span class=\"hlh-badge best\">Excellent (immersion)<\/span><\/li>\n            <li><span class=\"hlh-badge avg\">Slow (bath time)<\/span><\/li>\n            <li><span class=\"hlh-badge avg\">Medium<\/span><\/li>\n            <li><span class=\"hlh-badge low\">High (disposal)<\/span><\/li>\n          <\/ul>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"hlh-table-wrap\">\n      <table class=\"hlh-table\" aria-label=\"Angular Grit vs YSZ Beads for Coating Removal\">\n        <thead>\n          <tr>\n            <th>Criterion<\/th>\n            <th>YSZ Zirconia Beads<\/th>\n            <th>Angular Alumina Grit<\/th>\n            <th>Silicon Carbide Grit<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <td><strong>Substrate material loss per pass<\/strong><\/td>\n            <td><span class=\"hlh-badge best\">&lt;5 \u00b5m<\/span><\/td>\n            <td><span class=\"hlh-badge low\">15 \u2013 50 \u00b5m<\/span><\/td>\n            <td><span class=\"hlh-badge low\">20 \u2013 60 \u00b5m<\/span><\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Surface Ra after stripping<\/strong><\/td>\n            <td><span class=\"hlh-badge best\">0.4 \u2013 1.2 \u00b5m<\/span><\/td>\n            <td><span class=\"hlh-badge avg\">2.5 \u2013 6 \u00b5m<\/span><\/td>\n            <td><span class=\"hlh-badge avg\">3 \u2013 8 \u00b5m<\/span><\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Embedded abrasive contamination<\/strong><\/td>\n            <td><span class=\"hlh-badge best\">Minimal<\/span><\/td>\n            <td><span class=\"hlh-badge low\">Significant<\/span><\/td>\n            <td><span class=\"hlh-badge low\">Significant<\/span><\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Suitable for Ti \/ Ni alloys<\/strong><\/td>\n            <td><span class=\"hlh-badge best\">Yes<\/span><\/td>\n            <td><span class=\"hlh-badge avg\">With cleaning<\/span><\/td>\n            <td><span class=\"hlh-badge avg\">With cleaning<\/span><\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Re-coatable after stripping without additional prep?<\/strong><\/td>\n            <td><span class=\"hlh-badge best\">Often yes<\/span><\/td>\n            <td><span class=\"hlh-badge low\">Additional cleaning required<\/span><\/td>\n            <td><span class=\"hlh-badge low\">Additional cleaning required<\/span><\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <div class=\"hlh-callout green\">\n      <div class=\"hlh-callout-icon\">&#128200;<\/div>\n      <div class=\"hlh-callout-body\">\n        <strong>Regulatory Driver: Eliminating Hexavalent Chromium<\/strong>\n        EU REACH regulation and US EPA standards are progressively restricting or banning hexavalent chromium (Cr\u2076\u207a) compounds used in chrome plating baths and acid-based chrome stripping solutions. Many aerospace and automotive manufacturers are proactively converting to mechanical chrome stripping with YSZ beads to eliminate Cr\u2076\u207a from their facilities ahead of regulatory deadlines \u2014 reducing environmental liability while simultaneously improving process control and worker safety.\n      <\/div>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 SECTION 5 \u2550\u2550\u2550 -->\n    <h2 id=\"process-parameters\">5. Process Parameters for Coating Removal<\/h2>\n\n    <p>The four primary variables controlling coating removal rate and substrate loss in YSZ bead blasting are blast pressure, bead size, impact angle, and stand-off distance. These interact and must be optimised together rather than independently.<\/p>\n\n    <div class=\"hlh-table-wrap\">\n      <table class=\"hlh-table\" aria-label=\"Coating Removal Process Parameters\">\n        <thead>\n          <tr>\n            <th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n            <th>Effect on Coating Removal Rate<\/th>\n            <th>Effect on Substrate Loss<\/th>\n            <th>Recommended Starting Point<\/th>\n          <\/tr>\n        <\/thead>\n        <tbody>\n          <tr>\n            <td><strong>Blast pressure<\/strong><\/td>\n            <td>\u2191 pressure = faster removal<\/td>\n            <td>\u2191 pressure = more substrate erosion<\/td>\n            <td>Start at 2.5 bar; increase in 0.5 bar increments while monitoring substrate loss<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Bead size<\/strong><\/td>\n            <td>Larger beads = faster macro-removal<\/td>\n            <td>Larger beads = deeper substrate indentation<\/td>\n            <td>Match to coating thickness: thin coatings (&lt;50 \u00b5m) \u2192 0.1\u20130.3 mm; thick (&gt;200 \u00b5m) \u2192 0.5\u20131.0 mm<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Impact angle<\/strong><\/td>\n            <td>60\u201375\u00b0 often optimal for brittle coatings<\/td>\n            <td>90\u00b0 maximises substrate indentation; 45\u00b0 minimises<\/td>\n            <td>TBC and anodize: 60\u201375\u00b0. Paint and powder: 45\u201360\u00b0. Hard chrome: 75\u201390\u00b0<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Stand-off distance<\/strong><\/td>\n            <td>Shorter distance = higher velocity at surface<\/td>\n            <td>Shorter distance = more substrate impact<\/td>\n            <td>100\u2013200 mm; verify with Almen strip equivalent test piece for each setup<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Traverse speed<\/strong><\/td>\n            <td>Slower traverse = more exposure per area<\/td>\n            <td>Slower traverse = more substrate loss<\/td>\n            <td>Robotically controlled; set to achieve single-pass coating removal without multi-pass substrate erosion<\/td>\n          <\/tr>\n          <tr>\n            <td><strong>Nozzle type<\/strong><\/td>\n            <td>Focused nozzle for precision stripping; wide fan for large areas<\/td>\n            <td>Fan nozzle distributes energy; lower peak substrate erosion per pass<\/td>\n            <td>Fan nozzle for flat panels; focused nozzle for complex geometries and localised stripping<\/td>\n          <\/tr>\n        <\/tbody>\n      <\/table>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 SECTION 6 \u2550\u2550\u2550 -->\n    <h2 id=\"substrate-protection\">6. Substrate Protection \u2014 How to Avoid Damage<\/h2>\n\n    <p>The most critical risk in coating removal is over-blasting \u2014 continuing past the point of complete coating removal into the substrate. On thin-walled components such as turbine blades, this risk is compounded by the fact that wall thickness may be as low as 0.5\u20131.5 mm, leaving very little margin for substrate erosion. Four risk levels exist, from controllable to severe:<\/p>\n\n    <div class=\"hlh-risk-grid\">\n      <div class=\"hlh-risk-card low\">\n        <div class=\"hlh-risk-level\">&#9679; Low Risk<\/div>\n        <div class=\"hlh-risk-name\">Thick-walled structural parts<\/div>\n        <div class=\"hlh-risk-desc\">Wall thickness &gt;5 mm. Dimensional tolerance &gt;50 \u00b5m. Substrate loss per pass &lt;5 \u00b5m presents negligible dimensional risk. Standard parameter control sufficient.<\/div>\n      <\/div>\n      <div class=\"hlh-risk-card low\">\n        <div class=\"hlh-risk-level\">&#9679; Low Risk<\/div>\n        <div class=\"hlh-risk-name\">Flat panel paint stripping<\/div>\n        <div class=\"hlh-risk-desc\">Aircraft fuselage skins, automotive body panels. Substrate loss per pass of 2\u20135 \u00b5m is negligible relative to panel thickness (&gt;1 mm). Angle control (45\u201360\u00b0) maintains low substrate erosion rate.<\/div>\n      <\/div>\n      <div class=\"hlh-risk-card medium\">\n        <div class=\"hlh-risk-level\">&#9650; Medium Risk<\/div>\n        <div class=\"hlh-risk-name\">Anodized aluminium precision parts<\/div>\n        <div class=\"hlh-risk-desc\">Thin-walled aluminium components with tight dimensional tolerances. Process window between full anodize removal and substrate over-erosion is 5\u201315 \u00b5m. Requires parameter qualification and first-article measurement.<\/div>\n      <\/div>\n      <div class=\"hlh-risk-card medium\">\n        <div class=\"hlh-risk-level\">&#9650; Medium Risk<\/div>\n        <div class=\"hlh-risk-name\">TBC bond coat preservation<\/div>\n        <div class=\"hlh-risk-desc\">Stripping ceramic TBC top coat while preserving MCrAlY bond coat requires stopping within a 50\u2013100 \u00b5m depth window. Requires process simulation on test coupons before production stripping.<\/div>\n      <\/div>\n      <div class=\"hlh-risk-card high\">\n        <div class=\"hlh-risk-level\">&#9660; High Risk<\/div>\n        <div class=\"hlh-risk-name\">Turbine blade trailing edges<\/div>\n        <div class=\"hlh-risk-desc\">Wall thickness as low as 0.3\u20130.5 mm. Cumulative substrate loss across multiple strip cycles must stay within OEM tolerance (typically 25\u201350 \u00b5m total). Robotic blasting with real-time thickness monitoring is mandatory.<\/div>\n      <\/div>\n      <div class=\"hlh-risk-card high\">\n        <div class=\"hlh-risk-level\">&#9660; High Risk<\/div>\n        <div class=\"hlh-risk-name\">PVD\/CVD tool coating removal<\/div>\n        <div class=\"hlh-risk-desc\">Coating thickness of 1\u20135 \u00b5m on cutting edges where substrate material loss &gt;2 \u00b5m changes tool geometry. Extremely narrow process window \u2014 only fine YSZ beads (0.05\u20130.1 mm) at lowest effective pressure are acceptable.<\/div>\n      <\/div>\n    <\/div>\n\n    <h3>Masking and Fixturing<\/h3>\n    <p>Areas of the component that must not be stripped \u2014 cooling holes, trailing edge slots, threaded bores, bearing surfaces \u2014 should be masked with sacrificial tape, rubber plugs, or metal tooling fixtures before blasting begins. For turbine blades, precision-machined fixturing that fills cooling passages with sacrificial inserts is standard practice. Always inspect masking integrity before and after blasting; any masking failure that allows bead access to a protected feature can cause localised substrate damage that is expensive to remediate.<\/p>\n\n    <h3>Robotic Blasting for Consistent Results<\/h3>\n    <p>Manual blasting introduces human variability in stand-off distance, traverse speed, and angle \u2014 the primary drivers of substrate erosion rate. For safety-critical components undergoing repeated coating removal cycles, robotic blasting with a programmed path, constant velocity, and real-time nozzle position feedback is strongly recommended. Robotic systems reduce cycle-to-cycle variation in substrate loss from \u00b130% (manual) to \u00b15%, significantly extending the usable life of critical components.<\/p>\n\n    <!-- \u2550\u2550\u2550 SECTION 7 \u2550\u2550\u2550 -->\n    <h2 id=\"post-strip\">7. Post-Strip Surface Preparation<\/h2>\n\n    <p>The condition of the substrate surface immediately after coating removal determines the adhesion quality of the replacement coating. The post-strip sequence must be defined and controlled as rigorously as the stripping process itself.<\/p>\n\n    <div class=\"hlh-steps\">\n      <div class=\"hlh-step\">\n        <div class=\"hlh-step-num\"><\/div>\n        <div class=\"hlh-step-body\">\n          <div class=\"hlh-step-title\">Visual and Dimensional Inspection<\/div>\n          <div class=\"hlh-step-desc\">Inspect the stripped surface at 10\u00d7 magnification for complete coating removal \u2014 residual coating appears as colour variation or sheen differences against the bare substrate. Measure critical dimensions (wall thickness, bore diameter, airfoil chord) against the OEM drawing limits. Document all measurements for the component&#8217;s life history record.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"hlh-step\">\n        <div class=\"hlh-step-num\"><\/div>\n        <div class=\"hlh-step-body\">\n          <div class=\"hlh-step-title\">Fluorescent Penetrant Inspection (FPI)<\/div>\n          <div class=\"hlh-step-desc\">For aerospace components, FPI per ASTM E1417 is typically required after TBC stripping to detect any substrate cracking that may have been masked by the coating during service. The clean, contamination-free surface left by YSZ bead stripping responds more reliably to penetrant than chemically-stripped surfaces, which may retain residual bath chemistry that interferes with penetrant uptake.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"hlh-step\">\n        <div class=\"hlh-step-num\"><\/div>\n        <div class=\"hlh-step-body\">\n          <div class=\"hlh-step-title\">\u8868\u9762\u30af\u30ea\u30fc\u30cb\u30f3\u30b0<\/div>\n          <div class=\"hlh-step-desc\">Degrease with an approved solvent (typically isopropanol or acetone) to remove residual finger oils, masking adhesive residues, and blasting compound. For titanium and nickel superalloy components, a final aqueous alkali clean followed by DI water rinse ensures the surface is free of ionic contamination before coating. Validate cleanliness by water break test \u2014 water sheeting evenly indicates a clean, contamination-free surface.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"hlh-step\">\n        <div class=\"hlh-step-num\"><\/div>\n        <div class=\"hlh-step-body\">\n          <div class=\"hlh-step-title\">Surface Profile Verification<\/div>\n          <div class=\"hlh-step-desc\">Many coating specifications \u2014 particularly thermal spray and plasma spray coatings \u2014 require the substrate to present a defined surface profile (Ra or Rz) before application to ensure mechanical adhesion. YSZ bead stripping typically leaves Ra 0.4\u20131.2 \u00b5m depending on bead size and pressure. If the coating spec requires a coarser profile (Ra 2\u20135 \u00b5m), a separate grit blasting step is needed after YSZ stripping. If a finer profile is needed, a <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-surface-polishing\/\" target=\"_blank\" rel=\"noopener\">polishing stage with finer YSZ beads<\/a> may be performed before re-coating.<\/div>\n        <\/div>\n      <\/div>\n      <div class=\"hlh-step\">\n        <div class=\"hlh-step-num\"><\/div>\n        <div class=\"hlh-step-body\">\n          <div class=\"hlh-step-title\">Shot Peening (Where Specified)<\/div>\n          <div class=\"hlh-step-desc\">Some OEM repair specifications require the substrate to be shot peened after coating removal to restore compressive residual stresses that may have relaxed during coating exposure to service temperatures. In this case, the YSZ bead stripping process feeds directly into a <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-shot-peening\/\" target=\"_blank\" rel=\"noopener\">shot peening operation<\/a>, often using the same YSZ bead type at a larger size and higher energy. Define this as a separate, independently qualified process step with its own Almen certification.<\/div>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 SECTION 8 \u2550\u2550\u2550 -->\n    <h2 id=\"industry-applications\">8. Industry Applications<\/h2>\n\n    <h3>Aerospace MRO (Maintenance, Repair &amp; Overhaul)<\/h3>\n    <p>TBC stripping from turbine blades and vanes is the highest-value, most technically demanding coating removal application for YSZ beads. Engine MRO facilities performing hot section refurbishment on commercial and military gas turbines specify YSZ bead blasting as their standard TBC removal method, replacing grit blasting and chemical stripping processes that caused excessive substrate loss and introduced hazardous waste streams. The requirement for contamination-free substrate surfaces before FPI \u2014 which YSZ bead blasting consistently delivers \u2014 makes it uniquely suited to the aerospace MRO environment.<\/p>\n\n    <h3>Automotive Refinishing<\/h3>\n    <p>Aircraft livery changes, automotive fleet repaint programmes, and industrial equipment repainting all require complete removal of the existing paint system before applying new coatings. YSZ bead blasting at 45\u201360\u00b0 removes multi-layer paint systems (primer + basecoat + clearcoat) from aluminium and steel panels without distorting thin sheet metal or creating the surface contamination that makes solvent stripping environmentally burdensome. The stripped surface presents an ideal anchor profile for new primer adhesion.<\/p>\n\n    <h3>Industrial Equipment Maintenance<\/h3>\n    <p>Pump impellers, heat exchanger tubes, compressor casings, and valve bodies accumulate worn thermal spray, ceramic, or metallic protective coatings over years of service. YSZ bead stripping restores the substrate surface without the dimensional concerns of grit blasting or the chemical disposal costs of wet stripping, enabling cost-effective coating renewal programmes that extend equipment life beyond conventional overhaul intervals.<\/p>\n\n    <!-- \u2550\u2550\u2550 PILLAR BACKLINK \u2550\u2550\u2550 -->\n    <div class=\"hlh-pillar-banner\">\n      <div class=\"hlh-pillar-banner-icon\">&#128279;<\/div>\n      <div class=\"hlh-pillar-banner-text\">\n        This article is part of Henglihong&#8217;s complete surface treatment knowledge base. For a full overview of YSZ zirconia bead properties, grades, and the complete range of surface treatment applications \u2014 including shot peening, deburring, polishing, and industrial cleaning \u2014 refer to our <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads\/\" target=\"_blank\" rel=\"noopener\">complete zirconia beads guide<\/a>.\n      <\/div>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 RELATED GUIDES \u2550\u2550\u2550 -->\n    <h3>Related Guides in This Series<\/h3>\n    <div class=\"hlh-related\">\n      <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-shot-peening\/\" target=\"_blank\" rel=\"noopener\" class=\"hlh-related-card\">\n        <div class=\"hlh-related-card-icon\">&#9889;<\/div>\n        <div>\n          <strong>Shot Peening Guide<\/strong>\n          <span>Restore compressive stress after coating removal<\/span>\n        <\/div>\n      <\/a>\n      <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-surface-polishing\/\" target=\"_blank\" rel=\"noopener\" class=\"hlh-related-card\">\n        <div class=\"hlh-related-card-icon\">&#10024;<\/div>\n        <div>\n          <strong>Surface Polishing Guide<\/strong>\n          <span>Refine substrate Ra before re-coating<\/span>\n        <\/div>\n      <\/a>\n      <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-for-industrial-cleaning-and-surface-preparation\/\" target=\"_blank\" rel=\"noopener\" class=\"hlh-related-card\">\n        <div class=\"hlh-related-card-icon\">&#127981;<\/div>\n        <div>\n          <strong>Industrial Cleaning &amp; Surface Prep<\/strong>\n          <span>Oxide removal and adhesion profiling<\/span>\n        <\/div>\n      <\/a>\n      <a href=\"https:\/\/hlh-js.com\/resource\/blog\/zirconia-beads-vs-glass-beads-vs-steel-shot\/\" target=\"_blank\" rel=\"noopener\" class=\"hlh-related-card\">\n        <div class=\"hlh-related-card-icon\">&#9878;<\/div>\n        <div>\n          <strong>Media Comparison Guide<\/strong>\n          <span>Zirconia vs grit vs chemical \u2014 stripping TCO analysis<\/span>\n        <\/div>\n      <\/a>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 FAQ \u2550\u2550\u2550 -->\n    <h2 id=\"faq\">9. Frequently Asked Questions<\/h2>\n\n    <div class=\"hlh-faq\">\n\n      <div class=\"hlh-faq-item\">\n        <div class=\"hlh-faq-q\" onclick=\"this.parentElement.classList.toggle('open')\">\n          How many strip cycles can a turbine blade substrate withstand before reaching dimensional limits?\n          <span class=\"hlh-faq-toggle\">+<\/span>\n        <\/div>\n        <div class=\"hlh-faq-a\">\n          This depends on the OEM&#8217;s dimensional limits for the specific component, the substrate wall thickness, and the substrate loss per strip cycle with YSZ beads. A typical YSZ TBC stripping process removes &lt;5 \u00b5m of substrate per cycle. If the OEM allows a cumulative substrate loss of 50 \u00b5m over the blade&#8217;s service life, the blade can theoretically undergo 10 strip cycles \u2014 enough for the full maintenance life of most commercial turbine blades before retirement on dimension. In practice, blades are retired earlier due to thermal fatigue cracking or tip erosion. Document substrate loss per cycle from the first strip to track cumulative loss against the OEM limit.\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-faq-item\">\n        <div class=\"hlh-faq-q\" onclick=\"this.parentElement.classList.toggle('open')\">\n          Can YSZ bead blasting selectively remove the TBC top coat while leaving the bond coat intact?\n          <span class=\"hlh-faq-toggle\">+<\/span>\n        <\/div>\n        <div class=\"hlh-faq-a\">\n          Yes \u2014 this is one of the most technically valuable capabilities of YSZ bead stripping. The ceramic TBC top coat (YSZ, K\u2081c \u2248 1\u20132 MPa\u00b7m\u00bd) fractures readily at bead impact energies that do not fracture the tougher metallic MCrAlY bond coat (K\u2081c \u2248 15\u201325 MPa\u00b7m\u00bd). By optimising bead size, pressure, and impact angle \u2014 typically 0.2\u20130.4 mm beads at 2.0\u20133.0 bar \u2014 the top coat can be fully removed while the bond coat surface is only lightly dimpled. This selective stripping capability is critical for component refurbishment programmes where the bond coat is still serviceable and replaces the cost of full coating system removal and reapplication.\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-faq-item\">\n        <div class=\"hlh-faq-q\" onclick=\"this.parentElement.classList.toggle('open')\">\n          Does YSZ bead blasting cause hydrogen embrittlement in high-strength steel components?\n          <span class=\"hlh-faq-toggle\">+<\/span>\n        <\/div>\n        <div class=\"hlh-faq-a\">\n          No \u2014 hydrogen embrittlement is a risk specific to electrochemical processes (acid pickling, electrolytic chrome stripping, cadmium plating) where nascent hydrogen is generated at the cathode and can diffuse into the steel lattice. YSZ bead blasting is a purely mechanical, dry process with no electrochemical reactions \u2014 no hydrogen is generated, and no hydrogen can enter the steel. This makes YSZ bead stripping the preferred method for removing hard chrome from high-strength steel components (landing gear, high-tensile fasteners, helicopter rotor shafts) where the minimum yield strength exceeds 1,000 MPa and hydrogen embrittlement is a disqualifying failure mode.\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-faq-item\">\n        <div class=\"hlh-faq-q\" onclick=\"this.parentElement.classList.toggle('open')\">\n          How do I verify that all coating has been completely removed?\n          <span class=\"hlh-faq-toggle\">+<\/span>\n        <\/div>\n        <div class=\"hlh-faq-a\">\n          The verification method depends on the coating type. For TBC ceramic coatings, visual inspection under raking light at 10\u00d7 magnification detects residual ceramic (matte white appearance) against the bare metallic substrate. For hard chrome, a copper sulphate (CuSO\u2084) test swab is used \u2014 copper deposits on bare steel (indicating chrome removal) but not on residual chrome. For anodize, an electrical conductivity test or eddy current measurement detects the insulating anodize layer against the conductive aluminium substrate. For paint, visual inspection under UV light using fluorescent dye added to the primer layer during original application is the standard aerospace method. Always define the acceptance criteria before stripping begins, not after.\n        <\/div>\n      <\/div>\n\n      <div class=\"hlh-faq-item\">\n        <div class=\"hlh-faq-q\" onclick=\"this.parentElement.classList.toggle('open')\">\n          Can the same YSZ bead charge used for coating removal be used for subsequent shot peening?\n          <span class=\"hlh-faq-toggle\">+<\/span>\n        <\/div>\n        <div class=\"hlh-faq-a\">\n          This is not recommended for certified aerospace shot peening operations. The media charge used for coating removal will contain coating fragments (ceramic, metallic, or organic particles) and will have a broader size distribution than the original specification. Using this contaminated charge for shot peening would compromise the Almen certification and introduce foreign material contamination into the peened surface. Maintain separate, dedicated media charges for coating removal and shot peening operations, with separate lot documentation. The coating removal charge can be recycled for general-purpose blasting or cleaning applications before disposal.\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 AUTHOR \u2550\u2550\u2550 -->\n    <div class=\"hlh-author\">\n      <div class=\"hlh-author-logo\">HLH<\/div>\n      <div>\n        <div class=\"hlh-author-name\">\u6c5f\u8607\u6052\u9686\u79d1\u6280\u6709\u9650\u516c\u53f8<\/div>\n        <div class=\"hlh-author-bio\">YSZ zirconia bead specialist for precision coating removal in aerospace MRO, automotive refinishing, and industrial maintenance. Providing substrate-safe TBC stripping media, chrome removal solutions, and full technical process support for life-limited component refurbishment programmes.<\/div>\n      <\/div>\n    <\/div>\n\n    <!-- \u2550\u2550\u2550 CTA \u2550\u2550\u2550 -->\n    <div class=\"hlh-cta\">\n      <h2>Strip Coatings Without Damaging What&#8217;s Underneath<\/h2>\n      <p>Share your coating type, substrate material, and dimensional tolerance \u2014 our engineers will recommend the correct YSZ bead size and process parameters for minimum substrate loss and complete coating removal.<\/p>\n      <a href=\"https:\/\/hlh-js.com\/contact\/\" class=\"hlh-btn white\" target=\"_blank\" rel=\"noopener\">Request Stripping Process Support<\/a>\n      <a href=\"https:\/\/hlh-js.com\/products\/\" class=\"hlh-btn outline\" target=\"_blank\" rel=\"noopener\">View YSZ Product Range<\/a>\n    <\/div>\n\n  <\/div><!-- end hlh-inner -->\n<\/div><!-- end hlh-article -->\n\n<!-- \u2550\u2550\u2550 SCHEMA MARKUP \u2550\u2550\u2550 -->\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@graph\": [\n        {\n            \"@type\": \"Article\",\n            \"headline\": \"Zirconia Beads for Coating Removal \\u2014 Selective Stripping Without Substrate Damage\",\n            \"description\": \"How YSZ zirconia beads strip TBC, hard chrome, anodizing, paint, and powder coatings from aerospace, automotive, and industrial components with dimensional fidelity and zero contamination. Full process parameters, risk matrix, and industry applications.\",\n            \"author\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n                \"url\": \"https:\\\/\\\/hlh-js.com\"\n            },\n            \"publisher\": {\n                \"@type\": \"Organization\",\n                \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n                \"url\": \"https:\\\/\\\/hlh-js.com\"\n            },\n            \"mainEntityOfPage\": {\n                \"@type\": \"WebPage\",\n                \"@id\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/zirconia-beads-for-coating-removal\\\/\"\n            },\n            \"keywords\": \"zirconia beads coating removal, YSZ TBC stripping, ceramic bead paint removal, zirconia chrome stripping, aerospace coating removal media, selective coating stripping, zirconia bead blasting\"\n        },\n        {\n            \"@type\": \"FAQPage\",\n            \"mainEntity\": [\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Can YSZ bead blasting selectively remove TBC top coat while leaving the bond coat intact?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"Yes. The ceramic TBC top coat fractures readily at bead impact energies that do not fracture the tougher metallic MCrAlY bond coat. By optimising bead size (0.2\\u20130.4 mm) and pressure (2.0\\u20133.0 bar), the top coat can be fully removed while the bond coat is only lightly dimpled.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"Does YSZ bead blasting cause hydrogen embrittlement?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"No. Hydrogen embrittlement is specific to electrochemical processes where nascent hydrogen is generated. YSZ bead blasting is a purely mechanical dry process \\u2014 no hydrogen is generated, making it the preferred method for removing hard chrome from high-strength steel components.\"\n                    }\n                },\n                {\n                    \"@type\": \"Question\",\n                    \"name\": \"How many TBC strip cycles can a turbine blade withstand?\",\n                    \"acceptedAnswer\": {\n                        \"@type\": \"Answer\",\n                        \"text\": \"A typical YSZ TBC stripping process removes less than 5 \\u00b5m of substrate per cycle. If the OEM allows 50 \\u00b5m cumulative substrate loss, the blade can theoretically undergo 10 strip cycles \\u2014 sufficient for most commercial turbine blade service lives.\"\n                    }\n                }\n            ]\n        }\n    ]\n}<\/script>","protected":false},"excerpt":{"rendered":"<p>Cluster Guide \u00b7 Coating Removal Zirconia Beads for Coating Removal:  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":12618,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,177,138],"tags":[],"class_list":["post-12605","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-material","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts\/12605","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/comments?post=12605"}],"version-history":[{"count":2,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts\/12605\/revisions"}],"predecessor-version":[{"id":12607,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/posts\/12605\/revisions\/12607"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/media\/12618"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/media?parent=12605"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/categories?post=12605"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/ja\/wp-json\/wp\/v2\/tags?post=12605"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}