{"id":5261,"date":"2026-04-15T14:00:42","date_gmt":"2026-04-15T06:00:42","guid":{"rendered":"https:\/\/txjpcba.com\/?p=5261"},"modified":"2026-04-15T14:00:42","modified_gmt":"2026-04-15T06:00:42","slug":"how-to-test-coating-quality","status":"publish","type":"post","link":"https:\/\/txjpcba.com\/it\/how-to-test-coating-quality\/","title":{"rendered":"How to test coating quality?"},"content":{"rendered":"<h2 data-section-id=\"gsdmb0\" data-start=\"0\" data-end=\"30\">Test coating quality<\/h2>\n<p data-start=\"32\" data-end=\"319\">Testing coating quality is a critical step in ensuring the reliability of <strong data-start=\"106\" data-end=\"127\">Rivestimento conforme<\/strong> in <strong data-start=\"131\" data-end=\"147\">Assemblaggio di PCB<\/strong> e <strong data-start=\"152\" data-end=\"168\">Assemblaggio SMT<\/strong>. Proper inspection and testing help verify that the coating provides effective protection against moisture, dust, chemicals, and environmental stress.<\/p>\n<figure id=\"attachment_5262\" aria-describedby=\"caption-attachment-5262\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-5262\" src=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/How-to-test-coating-quality.jpg\" alt=\"How to test coating quality\" width=\"800\" height=\"597\" srcset=\"https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/How-to-test-coating-quality.jpg 800w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/How-to-test-coating-quality-300x224.jpg 300w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/How-to-test-coating-quality-768x573.jpg 768w, https:\/\/txjpcba.com\/wp-content\/uploads\/2026\/04\/How-to-test-coating-quality-16x12.jpg 16w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-5262\" class=\"wp-caption-text\">How to test coating quality<\/figcaption><\/figure>\n<h3 data-section-id=\"1m1ft8s\" data-start=\"321\" data-end=\"342\">Visual inspection<\/h3>\n<p data-start=\"344\" data-end=\"403\">Visual inspection is the most basic and widely used method.<\/p>\n<p data-start=\"405\" data-end=\"423\"><strong data-start=\"405\" data-end=\"423\">What to check:<\/strong><\/p>\n<ul data-start=\"424\" data-end=\"568\">\n<li data-section-id=\"1yns6or\" data-start=\"424\" data-end=\"452\">Uniform coating coverage<\/li>\n<li data-section-id=\"mecukt\" data-start=\"453\" data-end=\"496\">Absence of bubbles, cracks, or pinholes<\/li>\n<li data-section-id=\"1nn5v7x\" data-start=\"497\" data-end=\"538\">No contamination or foreign particles<\/li>\n<li data-section-id=\"5bqvqg\" data-start=\"539\" data-end=\"568\">Proper masking boundaries<\/li>\n<\/ul>\n<p data-start=\"570\" data-end=\"676\">Under normal or magnified light, inspectors can quickly identify obvious defects in <a href=\"https:\/\/txjpcba.com\/it\/rivestimento-conformale\/\"><strong data-start=\"654\" data-end=\"675\">Rivestimento conforme<\/strong><\/a>.<\/p>\n<h3 data-section-id=\"1rgw8cb\" data-start=\"678\" data-end=\"695\">UV inspection<\/h3>\n<p data-start=\"697\" data-end=\"753\">Many <strong data-start=\"702\" data-end=\"723\">Rivestimento conforme<\/strong> materials contain UV tracers.<\/p>\n<p data-start=\"755\" data-end=\"767\"><strong data-start=\"755\" data-end=\"767\">Process:<\/strong><\/p>\n<ul data-start=\"768\" data-end=\"842\">\n<li data-section-id=\"o9v3jf\" data-start=\"768\" data-end=\"794\">Expose PCB to UV light<\/li>\n<li data-section-id=\"1fhdtx7\" data-start=\"795\" data-end=\"842\">Coating fluoresces, making coverage visible<\/li>\n<\/ul>\n<p data-start=\"844\" data-end=\"857\"><strong data-start=\"844\" data-end=\"857\">Benefits:<\/strong><\/p>\n<ul data-start=\"858\" data-end=\"951\">\n<li data-section-id=\"1f5oxoi\" data-start=\"858\" data-end=\"898\">Detects missed areas or thin coating<\/li>\n<li data-section-id=\"14sk09d\" data-start=\"899\" data-end=\"951\">Improves inspection accuracy in <strong data-start=\"933\" data-end=\"949\">Assemblaggio SMT<\/strong><\/li>\n<\/ul>\n<h3 data-section-id=\"1t55vlm\" data-start=\"953\" data-end=\"978\">Thickness measurement<\/h3>\n<p data-start=\"980\" data-end=\"1027\">Coating thickness is essential for performance.<\/p>\n<p data-start=\"1029\" data-end=\"1041\"><strong data-start=\"1029\" data-end=\"1041\">Methods:<\/strong><\/p>\n<ul data-start=\"1042\" data-end=\"1177\">\n<li data-section-id=\"je540r\" data-start=\"1042\" data-end=\"1086\">Wet film thickness gauge (before curing)<\/li>\n<li data-section-id=\"16l9djo\" data-start=\"1087\" data-end=\"1136\">Dry film thickness measurement (after curing)<\/li>\n<li data-section-id=\"nsf6a0\" data-start=\"1137\" data-end=\"1177\">Micrometer or ultrasonic measurement<\/li>\n<\/ul>\n<p data-start=\"1179\" data-end=\"1280\">Proper thickness ensures optimal protection without affecting component function in <strong data-start=\"1263\" data-end=\"1279\">Assemblaggio di PCB<\/strong>.<\/p>\n<h3 data-section-id=\"1g42ihv\" data-start=\"1282\" data-end=\"1302\">Adhesion testing<\/h3>\n<p data-start=\"1304\" data-end=\"1366\">Adhesion testing checks how well the coating bonds to the PCB.<\/p>\n<p data-start=\"1368\" data-end=\"1387\"><strong data-start=\"1368\" data-end=\"1387\">Common methods:<\/strong><\/p>\n<ul data-start=\"1388\" data-end=\"1432\">\n<li data-section-id=\"1mabuii\" data-start=\"1388\" data-end=\"1415\">Cross-hatch (tape) test<\/li>\n<li data-section-id=\"1x3tibm\" data-start=\"1416\" data-end=\"1432\">Scratch test<\/li>\n<\/ul>\n<p data-start=\"1434\" data-end=\"1502\">Good adhesion ensures long-term durability of <strong data-start=\"1480\" data-end=\"1501\">Rivestimento conforme<\/strong>.<\/p>\n<h3 data-section-id=\"scd02m\" data-start=\"1504\" data-end=\"1526\">Electrical testing<\/h3>\n<p data-start=\"1528\" data-end=\"1575\">Electrical performance must not be compromised.<\/p>\n<p data-start=\"1577\" data-end=\"1595\"><strong data-start=\"1577\" data-end=\"1595\">Tests include:<\/strong><\/p>\n<ul data-start=\"1596\" data-end=\"1671\">\n<li data-section-id=\"ytss8d\" data-start=\"1596\" data-end=\"1629\">Insulation resistance testing<\/li>\n<li data-section-id=\"por5k\" data-start=\"1630\" data-end=\"1671\">Dielectric withstand (Hi-Pot) testing<\/li>\n<\/ul>\n<p data-start=\"1673\" data-end=\"1744\">These confirm that the coating enhances insulation in <a href=\"https:\/\/txjpcba.com\/it\/servizi-di-assemblaggio-smt\/\"><strong data-start=\"1727\" data-end=\"1743\">Assemblaggio SMT<\/strong><\/a>.<\/p>\n<h3 data-section-id=\"1h383xv\" data-start=\"1746\" data-end=\"1787\">Environmental and reliability testing<\/h3>\n<p data-start=\"1789\" data-end=\"1857\">For high-reliability applications, environmental tests are required.<\/p>\n<p data-start=\"1859\" data-end=\"1872\"><strong data-start=\"1859\" data-end=\"1872\">Examples:<\/strong><\/p>\n<ul data-start=\"1873\" data-end=\"1952\">\n<li data-section-id=\"13ia9kh\" data-start=\"1873\" data-end=\"1896\">Temperature cycling<\/li>\n<li data-section-id=\"7pqbev\" data-start=\"1897\" data-end=\"1917\">Test di umidit\u00e0<\/li>\n<li data-section-id=\"1lzcqkk\" data-start=\"1918\" data-end=\"1952\">Salt spray (corrosion) testing<\/li>\n<\/ul>\n<p data-start=\"1954\" data-end=\"2043\">These tests simulate real-world conditions to validate <strong data-start=\"2009\" data-end=\"2030\">Rivestimento conforme<\/strong> performance.<\/p>\n<h3 data-section-id=\"11ydqis\" data-start=\"2045\" data-end=\"2083\">Ispezione ottica automatizzata (AOI)<\/h3>\n<p data-start=\"2085\" data-end=\"2162\">In avanzato <a href=\"https:\/\/txjpcba.com\/it\/assemblaggio-pcb\/\"><strong data-start=\"2097\" data-end=\"2113\">Assemblaggio di PCB<\/strong><\/a>, AOI systems are used to detect coating defects.<\/p>\n<p data-start=\"2164\" data-end=\"2179\"><strong data-start=\"2164\" data-end=\"2179\">Advantages:<\/strong><\/p>\n<ul data-start=\"2180\" data-end=\"2276\">\n<li data-section-id=\"zg1fki\" data-start=\"2180\" data-end=\"2205\">High-speed inspection<\/li>\n<li data-section-id=\"vu6yis\" data-start=\"2206\" data-end=\"2243\">Consistent and repeatable results<\/li>\n<li data-section-id=\"piy2el\" data-start=\"2244\" data-end=\"2276\">Suitable for mass production<\/li>\n<\/ul>\n<h3 data-section-id=\"bvl6vm\" data-start=\"2278\" data-end=\"2313\">Common coating defects detected<\/h3>\n<ul data-start=\"2315\" data-end=\"2416\">\n<li data-section-id=\"88xt6l\" data-start=\"2315\" data-end=\"2335\">Uneven thickness<\/li>\n<li data-section-id=\"16uayvd\" data-start=\"2336\" data-end=\"2357\">Bubbles and voids<\/li>\n<li data-section-id=\"1k5wic3\" data-start=\"2358\" data-end=\"2374\">Delamination<\/li>\n<li data-section-id=\"118bbc\" data-start=\"2375\" data-end=\"2398\">Incomplete coverage<\/li>\n<li data-section-id=\"spzv60\" data-start=\"2399\" data-end=\"2416\">Contamination<\/li>\n<\/ul>\n<p data-start=\"2418\" data-end=\"2470\">Early detection prevents failures in final products.<\/p>\n<h3 data-section-id=\"8ep03t\" data-start=\"2472\" data-end=\"2492\">Conclusione finale<\/h3>\n<p data-start=\"2494\" data-end=\"2833\">Testing coating quality is essential in <strong data-start=\"2534\" data-end=\"2550\">Assemblaggio di PCB<\/strong> e <strong data-start=\"2555\" data-end=\"2571\">Assemblaggio SMT<\/strong> to ensure the effectiveness of <strong data-start=\"2603\" data-end=\"2624\">Rivestimento conforme<\/strong>. By combining visual inspection, UV inspection, thickness measurement, adhesion testing, and environmental testing, manufacturers can guarantee high reliability and long-term protection of electronic devices.<\/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;\">Richiedete un preventivo per il rivestimento conforme<\/h3>\n<p style=\"font-size: 15px; color: #555; margin-bottom: 15px;\">Richiedete oggi stesso la consulenza di esperti e i prezzi per le vostre esigenze di rivestimento conformale.<br \/>\nInviateci i vostri requisiti e riceverete una risposta rapida dal nostro team di ingegneri.<\/p>\n<p style=\"font-size: 14px; color: #333; margin-bottom: 20px;\">\u2714 Risposta in 24 ore \u2714 Supporto ingegneristico \u2714 Produzione di piccole dimensioni e di massa<\/p>\n<\/div>\n<div style=\"text-align: left;\"><style 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id=\"wpforms-submit-2237\" class=\"wpforms-submit\" aria-live=\"assertive\" value=\"wpforms-submit\">Invia<\/button><img decoding=\"async\" src=\"https:\/\/txjpcba.com\/wp-content\/plugins\/wpforms\/assets\/images\/submit-spin.svg\" class=\"wpforms-submit-spinner\" style=\"display: none;\" width=\"26\" height=\"26\" alt=\"Caricamento\"><\/div><input type=\"hidden\" name=\"trp-form-language\" value=\"it\"\/><\/form><\/div>  <!-- .wpforms-container --><\/div>\n<p style=\"font-size: 13px; color: #888; margin-top: 15px; text-align: center;\">Shenzhen Tengxinjie Electronics Co., Ltd.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Test coating quality Testing coating quality is a critical step in ensuring the reliability of Conformal Coating in PCB Assembly 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