{"id":5247,"date":"2026-04-14T18:24:38","date_gmt":"2026-04-14T10:24:38","guid":{"rendered":"https:\/\/txjpcba.com\/?p=5247"},"modified":"2026-04-14T18:24:38","modified_gmt":"2026-04-14T10:24:38","slug":"what-is-coating-removal-process","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/zh\/what-is-coating-removal-process\/","title":{"rendered":"What is coating removal process?"},"content":{"rendered":"<h2 data-start=\"0\" data-end=\"35\"><strong data-start=\"0\" data-end=\"35\">Coating removal process<\/strong><\/h2>\n<p data-start=\"37\" data-end=\"332\">The coating removal process refers to the controlled stripping of <a href=\"https:\/\/txjpcba.com\/zh\/%e4%bf%9d%e5%bd%a2%e5%a1%97%e5%b1%a4\/\"><strong data-start=\"103\" data-end=\"124\">\u4fdd\u5f62\u5857\u5c64<\/strong><\/a> from a PCB to allow inspection, repair, modification, or rework. It is a critical operation in <strong data-start=\"220\" data-end=\"236\">PCB \u7d44\u88dd<\/strong> \u548c <strong data-start=\"241\" data-end=\"257\">SMT \u7d44\u88dd<\/strong>, especially when defects must be corrected or components need replacement.<\/p>\n<figure id=\"attachment_5248\" aria-describedby=\"caption-attachment-5248\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-5248\" src=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-coating-removal-process.jpg\" alt=\"What is coating removal process\" width=\"800\" height=\"597\" srcset=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-coating-removal-process.jpg 800w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-coating-removal-process-300x224.jpg 300w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-coating-removal-process-768x573.jpg 768w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/What-is-coating-removal-process-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-5248\" class=\"wp-caption-text\">What is coating removal process<\/figcaption><\/figure>\n<p data-start=\"334\" data-end=\"370\"><strong data-start=\"334\" data-end=\"370\">Why coating removal is necessary<\/strong><\/p>\n<p data-start=\"372\" data-end=\"443\">\u5728 <strong data-start=\"375\" data-end=\"399\">\u4ea4\u9470\u5319 PCB \u7d44\u88dd<\/strong>, coating removal is typically required for:<\/p>\n<ul data-start=\"445\" data-end=\"694\">\n<li data-section-id=\"zhiqoe\" data-start=\"445\" data-end=\"489\">Repairing or replacing faulty components<\/li>\n<li data-section-id=\"37w4sc\" data-start=\"490\" data-end=\"548\">Fixing coating defects (bubbles, cracks, delamination)<\/li>\n<li data-section-id=\"a6ismd\" data-start=\"549\" data-end=\"601\">Removing contamination trapped under the coating<\/li>\n<li data-section-id=\"46brxg\" data-start=\"602\" data-end=\"648\">Implementing design or engineering changes<\/li>\n<li data-section-id=\"x2h68s\" data-start=\"649\" data-end=\"694\">Performing detailed inspection or testing<\/li>\n<\/ul>\n<p data-start=\"696\" data-end=\"777\">Without proper removal, accessing the PCB circuitry would be difficult and risky.<\/p>\n<p data-start=\"779\" data-end=\"833\"><strong data-start=\"779\" data-end=\"833\">Types of conformal coatings and removal difficulty<\/strong><\/p>\n<p data-start=\"835\" data-end=\"888\">Different coatings require different removal methods:<\/p>\n<ul data-start=\"890\" data-end=\"1159\">\n<li data-section-id=\"bx8ufy\" data-start=\"890\" data-end=\"934\"><strong data-start=\"892\" data-end=\"912\">\u4e19\u70ef\u9178\u5857\u6599<\/strong> \u2192 easiest to remove<\/li>\n<li data-section-id=\"16rnwf7\" data-start=\"935\" data-end=\"992\"><strong data-start=\"937\" data-end=\"958\">\u77fd\u81a0\u5857\u5c64<\/strong> \u2192 flexible, moderate difficulty<\/li>\n<li data-section-id=\"17e5wkp\" data-start=\"993\" data-end=\"1044\"><strong data-start=\"995\" data-end=\"1016\">Urethane coatings<\/strong> \u2192 more chemical-resistant<\/li>\n<li data-section-id=\"1w8rabb\" data-start=\"1045\" data-end=\"1100\"><strong data-start=\"1047\" data-end=\"1065\">\u74b0\u6c27\u5857\u6599<\/strong> \u2192 very hard, difficult to remove<\/li>\n<li data-section-id=\"11hbnkp\" data-start=\"1101\" data-end=\"1159\"><strong data-start=\"1103\" data-end=\"1124\">Parylene coatings<\/strong> \u2192 require specialized techniques<\/li>\n<\/ul>\n<p data-start=\"1161\" data-end=\"1249\">Understanding the coating type is essential in <a href=\"https:\/\/txjpcba.com\/zh\/pcb-%e8%a3%9d%e9%85%8d\/\"><strong data-start=\"1208\" data-end=\"1224\">PCB \u7d44\u88dd<\/strong><\/a> before starting removal.<\/p>\n<p data-start=\"1251\" data-end=\"1285\"><strong data-start=\"1251\" data-end=\"1285\">Common coating removal methods<\/strong><\/p>\n<p data-start=\"1287\" data-end=\"1308\"><strong data-start=\"1287\" data-end=\"1306\">Solvent removal<\/strong><\/p>\n<ul data-start=\"1309\" data-end=\"1453\">\n<li data-section-id=\"10je4b4\" data-start=\"1309\" data-end=\"1359\">Uses chemical solvents to dissolve the coating<\/li>\n<li data-section-id=\"1ol9xcu\" data-start=\"1360\" data-end=\"1399\">Most effective for acrylic coatings<\/li>\n<li data-section-id=\"1k95pz9\" data-start=\"1400\" data-end=\"1453\">Simple and widely used in <a href=\"https:\/\/txjpcba.com\/zh\/smt-%e7%b5%84%e8%a3%9d%e6%9c%8d%e5%8b%99\/\"><strong data-start=\"1428\" data-end=\"1444\">SMT \u7d44\u88dd<\/strong><\/a> rework<\/li>\n<\/ul>\n<p data-start=\"1455\" data-end=\"1479\"><strong data-start=\"1455\" data-end=\"1477\">Mechanical removal<\/strong><\/p>\n<ul data-start=\"1480\" data-end=\"1608\">\n<li data-section-id=\"1sbdw6u\" data-start=\"1480\" data-end=\"1530\">Involves scraping, brushing, or micro-abrasion<\/li>\n<li data-section-id=\"11276lv\" data-start=\"1531\" data-end=\"1565\">Suitable for localized removal<\/li>\n<li data-section-id=\"15ksb8\" data-start=\"1566\" data-end=\"1608\">Requires precision to avoid PCB damage<\/li>\n<\/ul>\n<p data-start=\"1610\" data-end=\"1634\"><strong data-start=\"1610\" data-end=\"1632\">Chemical stripping<\/strong><\/p>\n<ul data-start=\"1635\" data-end=\"1782\">\n<li data-section-id=\"59lnw9\" data-start=\"1635\" data-end=\"1699\">Uses stronger chemicals for tough coatings (urethane, epoxy)<\/li>\n<li data-section-id=\"ulpyy3\" data-start=\"1700\" data-end=\"1746\">Effective but must be carefully controlled<\/li>\n<li data-section-id=\"r1fhnv\" data-start=\"1747\" data-end=\"1782\">Requires proper safety measures<\/li>\n<\/ul>\n<p data-start=\"1784\" data-end=\"1805\"><strong data-start=\"1784\" data-end=\"1803\">Thermal removal<\/strong><\/p>\n<ul data-start=\"1806\" data-end=\"1928\">\n<li data-section-id=\"1a3db0\" data-start=\"1806\" data-end=\"1844\">Applies heat to soften the coating<\/li>\n<li data-section-id=\"i2ur05\" data-start=\"1845\" data-end=\"1880\">Makes mechanical removal easier<\/li>\n<li data-section-id=\"dihyn8\" data-start=\"1881\" data-end=\"1928\">Must avoid overheating sensitive components<\/li>\n<\/ul>\n<p data-start=\"1930\" data-end=\"1970\"><strong data-start=\"1930\" data-end=\"1968\">Plasma or laser removal (advanced)<\/strong><\/p>\n<ul data-start=\"1971\" data-end=\"2085\">\n<li data-section-id=\"13qcswl\" data-start=\"1971\" data-end=\"2016\">Used for high-precision or complex boards<\/li>\n<li data-section-id=\"j6vn0k\" data-start=\"2017\" data-end=\"2085\">Ideal for selective removal in high-end <a href=\"https:\/\/txjpcba.com\/zh\/%e4%ba%a4%e9%91%b0%e5%8c%99-pcb-%e8%a3%9d%e9%85%8d\/\"><strong data-start=\"2059\" data-end=\"2083\">\u4ea4\u9470\u5319 PCB \u7d44\u88dd<\/strong><\/a><\/li>\n<\/ul>\n<p data-start=\"2087\" data-end=\"2123\"><strong data-start=\"2087\" data-end=\"2123\">Steps in coating removal process<\/strong><\/p>\n<ol data-start=\"2125\" data-end=\"2389\">\n<li data-section-id=\"y0naov\" data-start=\"2125\" data-end=\"2155\"><strong data-start=\"2128\" data-end=\"2153\">Identify coating type<\/strong><\/li>\n<li data-section-id=\"1l9pqiv\" data-start=\"2156\" data-end=\"2198\"><strong data-start=\"2159\" data-end=\"2196\">Select appropriate removal method<\/strong><\/li>\n<li data-section-id=\"n9cpd4\" data-start=\"2199\" data-end=\"2258\"><strong data-start=\"2202\" data-end=\"2256\">Protect surrounding components (masking if needed)<\/strong><\/li>\n<li data-section-id=\"m6bj1t\" data-start=\"2259\" data-end=\"2301\"><strong data-start=\"2262\" data-end=\"2299\">Remove coating from targeted area<\/strong><\/li>\n<li data-section-id=\"vxdok0\" data-start=\"2302\" data-end=\"2336\"><strong data-start=\"2305\" data-end=\"2334\">Clean residues thoroughly<\/strong><\/li>\n<li data-section-id=\"1xk564y\" data-start=\"2337\" data-end=\"2389\"><strong data-start=\"2340\" data-end=\"2387\">Inspect PCB for damage or remaining coating<\/strong><\/li>\n<\/ol>\n<p data-start=\"2391\" data-end=\"2458\">Each step must be carefully controlled to maintain board integrity.<\/p>\n<p data-start=\"2460\" data-end=\"2493\"><strong data-start=\"2460\" data-end=\"2493\">Challenges in coating removal<\/strong><\/p>\n<ul data-start=\"2495\" data-end=\"2663\">\n<li data-section-id=\"8vtvhq\" data-start=\"2495\" data-end=\"2540\">Risk of damaging components or PCB traces<\/li>\n<li data-section-id=\"1b79252\" data-start=\"2541\" data-end=\"2585\">Residue left behind affecting re-coating<\/li>\n<li data-section-id=\"ed1853\" data-start=\"2586\" data-end=\"2622\">Time-consuming for hard coatings<\/li>\n<li data-section-id=\"12443y2\" data-start=\"2623\" data-end=\"2663\">Safety concerns when using chemicals<\/li>\n<\/ul>\n<p data-start=\"2665\" data-end=\"2753\">These challenges highlight the importance of proper process control in <strong data-start=\"2736\" data-end=\"2752\">PCB \u7d44\u88dd<\/strong>.<\/p>\n<p data-start=\"2755\" data-end=\"2773\"><strong data-start=\"2755\" data-end=\"2773\">Best practices<\/strong><\/p>\n<ul data-start=\"2775\" data-end=\"3010\">\n<li data-section-id=\"ogczon\" data-start=\"2775\" data-end=\"2830\">Use coatings that allow easier rework when possible<\/li>\n<li data-section-id=\"13axexr\" data-start=\"2831\" data-end=\"2872\">Limit removal to only necessary areas<\/li>\n<li data-section-id=\"u3og7f\" data-start=\"2873\" data-end=\"2917\">Use proper tools and trained technicians<\/li>\n<li data-section-id=\"5ii8cx\" data-start=\"2918\" data-end=\"2964\">Follow safety and environmental guidelines<\/li>\n<li data-section-id=\"1k0nimh\" data-start=\"2965\" data-end=\"3010\">Ensure complete cleaning before recoating<\/li>\n<\/ul>\n<p data-start=\"3012\" data-end=\"3026\"><strong data-start=\"3012\" data-end=\"3026\">\u7e3d\u7d50<\/strong><\/p>\n<p data-start=\"3028\" data-end=\"3360\">The coating removal process is an essential part of rework in <strong data-start=\"3090\" data-end=\"3106\">PCB \u7d44\u88dd<\/strong>, <strong data-start=\"3108\" data-end=\"3124\">SMT \u7d44\u88dd<\/strong>, \u4ee5\u53ca <strong data-start=\"3130\" data-end=\"3154\">\u4ea4\u9470\u5319 PCB \u7d44\u88dd<\/strong>. By selecting the correct method and following controlled procedures, manufacturers can safely remove <strong data-start=\"3257\" data-end=\"3278\">\u4fdd\u5f62\u5857\u5c64<\/strong>, perform repairs, and restore PCB functionality without compromising reliability.<\/p>\n<div style=\"background: #f8f8f8; border: 1px solid #e5e5e5; padding: 25px; margin-top: 30px; border-radius: 6px;\">\n<div style=\"text-align: center;\">\n<h3 style=\"margin-bottom: 10px; font-size: 22px;\">\u53d6\u5f97\u4fdd\u5f62\u5857\u5c64\u5831\u50f9<\/h3>\n<p style=\"font-size: 15px; color: #555; margin-bottom: 15px;\">\u5728\u6c7d\u8eca\u3001\u5de5\u696d\u6216\u6236\u5916\u96fb\u5b50\u9818\u57df\u5de5\u4f5c\uff1f\u6211\u5011\u53ef\u4ee5\u63d0\u4f9b\u4fdd\u5f62\u5857\u5c64\u670d\u52d9\u3002.<br \/>\n\u5c07\u60a8\u7684\u9700\u6c42\u50b3\u9001\u7d66\u6211\u5011\uff0c\u4e26\u7372\u5f97\u6211\u5011\u5de5\u7a0b\u5718\u968a\u7684\u5feb\u901f\u56de\u61c9\u3002.<\/p>\n<p style=\"font-size: 14px; color: #333; margin-bottom: 20px;\">24 \u5c0f\u6642\u56de\u61c9 \u2714 \u5de5\u7a0b\u652f\u63f4 \u2714 \u5c0f\u578b\u8207\u5927\u91cf\u751f\u7522<\/p>\n<\/div>\n<div style=\"text-align: left;\"><style id=\"wpforms-css-vars-2237\">\n\t\t\t\t#wpforms-2237 {\n\t\t\t\t--wpforms-field-size-input-height: 43px;\n--wpforms-field-size-input-spacing: 15px;\n--wpforms-field-size-font-size: 16px;\n--wpforms-field-size-line-height: 19px;\n--wpforms-field-size-padding-h: 14px;\n--wpforms-field-size-checkbox-size: 16px;\n--wpforms-field-size-sublabel-spacing: 5px;\n--wpforms-field-size-icon-size: 1;\n--wpforms-label-size-font-size: 16px;\n--wpforms-label-size-line-height: 19px;\n--wpforms-label-size-sublabel-font-size: 14px;\n--wpforms-label-size-sublabel-line-height: 17px;\n--wpforms-button-size-font-size: 17px;\n--wpforms-button-size-height: 41px;\n--wpforms-button-size-padding-h: 15px;\n--wpforms-button-size-margin-top: 10px;\n--wpforms-container-shadow-size-box-shadow: none;\n\t\t\t}\n\t\t\t<\/style><div 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