{"id":5909,"date":"2025-12-26T01:22:29","date_gmt":"2025-12-26T01:22:29","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5909"},"modified":"2025-12-26T01:22:29","modified_gmt":"2025-12-26T01:22:29","slug":"black-spots-in-plated-parts-salt-spray-test","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/tr\/blog\/black-spots-in-plated-parts-salt-spray-test\/","title":{"rendered":"Kaplama Par\u00e7alar\u0131nda Tuz P\u00fcsk\u00fcrtme Testinde Olu\u015fan Siyah Noktalar"},"content":{"rendered":"<h1 style=\"color: #333; font-size: 32px; text-align: center;\">Kaplama Par\u00e7alar\u0131nda Tuz P\u00fcsk\u00fcrtme Testinde Olu\u015fan Siyah Noktalar<\/h1>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">Makale \u00d6zeti<\/h2>\n<p style=\"font-size: 16px;\">Bu makale, tuz p\u00fcsk\u00fcrtme testi s\u0131ras\u0131nda elektrokaplama \u00fcr\u00fcnlerinde olu\u015fan siyah noktalar\u0131n yap\u0131land\u0131r\u0131lm\u0131\u015f bir \u00f6zetini sunarak, temel bilgilerden ileri d\u00fczey i\u00e7g\u00f6r\u00fclere ve pratik k\u0131lavuzlara mant\u0131kl\u0131 bir ilerleme sa\u011flamaktad\u0131r.<\/p>\n<ol style=\"margin-left: 20px; font-size: 16px;\">\n<li>Tuz P\u00fcsk\u00fcrtme Testine ve Siyah Noktalara Giri\u015f<\/li>\n<li>Siyah Noktalar\u0131n Nedenleri: Elektrokaplamada Bulunan Safs\u0131zl\u0131klar<\/li>\n<li>Oksidasyon ve G\u00f6r\u00fcn\u00fcm Mekanizmalar\u0131<\/li>\n<li>End\u00fcstri Standartlar\u0131 ve Test Protokolleri<\/li>\n<li>\u00c7\u00f6z\u00fcmler ve \u00d6nleme Stratejileri<\/li>\n<li>De\u011ferlendirme ve Kabul Kriterleri<\/li>\n<li>S\u0131k\u00e7a Sorulan Sorular (SSS)<\/li>\n<\/ol>\n<\/section>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">Tuz P\u00fcsk\u00fcrtme Testine ve Siyah Noktalara Giri\u015f<\/h2>\n<p style=\"font-size: 16px;\">Tuz p\u00fcsk\u00fcrtme testi, di\u011fer ad\u0131yla n\u00f6tr tuz p\u00fcsk\u00fcrtme (NSS) testi, vidalar, ba\u011flant\u0131 elemanlar\u0131 ve di\u011fer donan\u0131mlar gibi metal par\u00e7alar \u00fczerindeki elektrokaplama kaplamalar\u0131n\u0131n korozyon direncini de\u011ferlendirmek i\u00e7in kullan\u0131lan standartla\u015ft\u0131r\u0131lm\u0131\u015f h\u0131zland\u0131r\u0131lm\u0131\u015f bir korozyon test y\u00f6ntemidir. ASTM B117 ve ISO 9227 gibi standartlara g\u00f6re, bu test, uzun s\u00fcreli a\u015f\u0131nd\u0131r\u0131c\u0131 ortamlara maruz kalmay\u0131 sim\u00fcle etmek i\u00e7in numuneleri kontroll\u00fc bir tuzlu sis ortam\u0131na maruz b\u0131rak\u0131r. Tipik olarak, \u00e7inko kapl\u0131 \u00fcr\u00fcnler i\u00e7in 48 saat i\u00e7inde beyaz pas ve 72 saat i\u00e7inde k\u0131rm\u0131z\u0131 pas olmamas\u0131 gerekir; burada beyaz pas \u00e7inko oksit olu\u015fumunu, k\u0131rm\u0131z\u0131 pas ise ana metal (demir) oksidasyonunu g\u00f6sterir.<\/p>\n<p style=\"font-size: 16px;\">Ancak, beyaz veya k\u0131rm\u0131z\u0131 pas olu\u015fmadan \u00f6nce siyah lekeler veya yamalar ortaya \u00e7\u0131kt\u0131\u011f\u0131nda s\u0131k kar\u015f\u0131la\u015f\u0131lan ancak kafa kar\u0131\u015ft\u0131r\u0131c\u0131 bir sorun ya\u015fan\u0131r ve bu durum s\u0131kl\u0131kla kar\u0131\u015f\u0131kl\u0131\u011fa ve kalite anla\u015fmazl\u0131klar\u0131na yol a\u00e7ar. Bu siyah lekeler \u00e7inko veya ana metal oksidasyonunun g\u00f6stergesi de\u011fildir, aksine kaplama tabakas\u0131na g\u00f6m\u00fcl\u00fc safs\u0131zl\u0131klar\u0131n oksidasyonundan kaynaklan\u0131r. Bu fenomen, mavi \u00e7inko, beyaz \u00e7inko ve \u00fc\u00e7 de\u011ferlikli kromat d\u00f6n\u00fc\u015f\u00fcmleri de dahil olmak \u00fczere \u00e7e\u015fitli kaplamalarda g\u00f6zlemlenir ve kaplamal\u0131 par\u00e7alar\u0131n \u00e7evresel streslere dayanmas\u0131 gereken otomotiv, elektronik ve in\u015faat gibi sekt\u00f6rlerde kritik bir endi\u015fe kayna\u011f\u0131d\u0131r.<\/p>\n<p style=\"font-size: 16px;\">Siyah lekeleri anlamak, kaplama banyosundaki safs\u0131zl\u0131klar\u0131n kaplamay\u0131 kirletti\u011fi elektrokaplama s\u00fcrecini incelemeyi gerektirir. Bu makale, nedenleri, mekanizmalar\u0131, standartlar\u0131, \u00e7\u00f6z\u00fcmleri ve de\u011ferlendirmeyi ele alarak, Uluslararas\u0131 \u00c7inko Birli\u011fi ve ASTM A380 gibi temizleme ve pasivasyon i\u00e7in kaplama standartlar\u0131 gibi end\u00fcstri uygulamalar\u0131yla uyumlu, 1400 kelimeden fazla detayl\u0131 ve g\u00fcvenilir bilgi sunmaktad\u0131r.<\/p>\n<\/section>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">Siyah Noktalar\u0131n Nedenleri: Elektrokaplamada Bulunan Safs\u0131zl\u0131klar<\/h2>\n<p style=\"font-size: 16px;\">Tuz p\u00fcsk\u00fcrtme testlerinde g\u00f6r\u00fclen siyah noktalar, esas olarak kaplama i\u015flemi s\u0131ras\u0131nda elektrokaplama tabakas\u0131na kar\u0131\u015fan safs\u0131zl\u0131klardan kaynaklan\u0131r. Bu safs\u0131zl\u0131klar, metal iyonlar\u0131 (\u00f6rne\u011fin \u00e7inko), elektrolitler ve katk\u0131 maddeleri i\u00e7eren kaplama \u00e7\u00f6zeltisinden gelir. Zamanla, yeterli bak\u0131m yap\u0131lmadan banyonun tekrar tekrar kullan\u0131lmas\u0131 nedeniyle kirleticiler birikir. Kaynaklar aras\u0131nda art\u0131k ya\u011flar, i\u015f par\u00e7alar\u0131ndan gelen metal par\u00e7ac\u0131klar\u0131, d\u00fc\u015fen par\u00e7ac\u0131klar veya kaplamadan \u00f6nce par\u00e7alar\u0131n eksik durulanmas\u0131 yer al\u0131r.<\/p>\n<p style=\"font-size: 16px;\">\u00c7inko elektrokaplamada, banyo alkali veya asidik bir \u00e7\u00f6zeltidir ve \u00e7inko iyonlar\u0131 katotta (i\u015f par\u00e7as\u0131) indirgenir. Safs\u0131zl\u0131klar \u00e7inko ile birlikte \u00e7\u00f6kelerek, a\u015f\u0131nd\u0131r\u0131c\u0131 ortamlarda tercihli oksidasyona yatk\u0131n heterojen b\u00f6lgeler olu\u015fturur. Tekd\u00fcze \u00e7inko oksitten (beyaz pas) farkl\u0131 olarak, bu b\u00f6lgeler koyu bile\u015fiklere oksitlenerek siyah noktalar olarak g\u00f6r\u00fcn\u00fcr. Birikim kademeli olup, partiye g\u00f6re de\u011fi\u015fir; taze banyolar\u0131n erken kullan\u0131m\u0131 daha temiz birikintiler verirken, uzun s\u00fcreli kullan\u0131m safs\u0131zl\u0131k seviyelerini art\u0131r\u0131r.<\/p>\n<p style=\"font-size: 16px;\">S\u0131k rastlanan safs\u0131zl\u0131klar aras\u0131nda demir, bak\u0131r veya organik kal\u0131nt\u0131lar bulunur. \u00d6rne\u011fin, \u00e7\u00f6z\u00fcnm\u00fc\u015f anotlardan veya aletlerden gelen demir, demir oksitler olu\u015fturarak kararmaya katk\u0131da bulunabilir. \u00c7inko kaplamalar i\u00e7in ISO 2081 gibi standartlar, bu t\u00fcr kusurlar\u0131 en aza indirmek i\u00e7in banyo safl\u0131\u011f\u0131n\u0131 vurgular. Atomik absorpsiyon spektroskopisi gibi tekniklerle banyo bile\u015fiminin izlenmesi, kirleticilerin erken tespit edilmesine yard\u0131mc\u0131 olur.<\/p>\n<\/section>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">Oksidasyon ve G\u00f6r\u00fcn\u00fcm Mekanizmalar\u0131<\/h2>\n<p style=\"font-size: 16px;\">Oksidasyon mekanizmas\u0131, kaplama i\u00e7indeki safs\u0131zl\u0131k b\u00f6lgelerinde galvanik korozyonu i\u00e7erir. Tuz p\u00fcsk\u00fcrtme testinde (ISO 9227'ye g\u00f6re 35\u00b0C'de 5% NaCl, pH 6,5-7,2), klor\u00fcr iyonlar\u0131 kaplamaya sald\u0131rarak zay\u0131f noktalarda oksidasyonu h\u0131zland\u0131r\u0131r. Safs\u0131zl\u0131klar anotik b\u00f6lgeler gibi davranarak \u00e7evredeki \u00e7inkodan daha h\u0131zl\u0131 korozyona u\u011frar ve siyah oksitler veya hidroksitler olu\u015fturur.<\/p>\n<p style=\"font-size: 16px;\">Kimyasal olarak, demir mevcutsa Fe2O3 veya Fe3O4 (siyah manyetit) olu\u015fturabilir. Organik safs\u0131zl\u0131klar karbonla\u015f\u0131r veya koyu kompleksler olu\u015fturur. Bu, beyaz pas (Zn(OH)2 veya ZnO) veya k\u0131rm\u0131z\u0131 pas (ana metal \u00fczerinde Fe2O3) ile farkl\u0131d\u0131r. Siyah lekeler erken ortaya \u00e7\u0131kar \u00e7\u00fcnk\u00fc safs\u0131zl\u0131klar genellikle kaplaman\u0131n tamamen bozulmas\u0131ndan \u00f6nce, 24-48 saat i\u00e7inde \u00f6ncelikli olarak oksitlenir.<\/p>\n<p style=\"font-size: 16px;\">B\u00fcy\u00fcte\u00e7 alt\u0131nda yap\u0131lan g\u00f6rsel inceleme, lekeleri lokalize \u00e7ukurla\u015fma veya renk bozulmas\u0131 olarak ortaya \u00e7\u0131kar\u0131r. Elektrokimyasal empedans spektroskopisi (EIS), korozyon oranlar\u0131n\u0131 \u00f6l\u00e7ebilir ve safs\u0131zl\u0131k b\u00f6lgelerinde daha d\u00fc\u015f\u00fck diren\u00e7 g\u00f6sterir. Bu, kaplama b\u00fct\u00fcnl\u00fc\u011f\u00fc \u00fczerindeki safs\u0131zl\u0131k etkilerini vurgulayan modifiye tuz p\u00fcsk\u00fcrtme testleri i\u00e7in ASTM G85 ile uyumludur.<\/p>\n<\/section>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">End\u00fcstri Standartlar\u0131 ve Test Protokolleri<\/h2>\n<p style=\"font-size: 16px;\">ISO 9227 ve ASTM B117 gibi standartlar tuz p\u00fcsk\u00fcrtme protokollerini tan\u0131mlar, ancak siyah noktalar\u0131 a\u00e7\u0131k\u00e7a ele almaz ve bunlar\u0131 \"di\u011fer korozyon \u00fcr\u00fcnleri\" olarak s\u0131n\u0131fland\u0131r\u0131r. Bununla birlikte, SAE J2334 veya GMW14872 gibi otomotiv standartlar\u0131, siyah noktalar gibi kusurlar i\u00e7in g\u00f6rsel kriterler i\u00e7erir ve genellikle belirtilen saatlerden sonra g\u00f6r\u00fcn\u00fcr renk de\u011fi\u015fimi olmamas\u0131n\u0131 gerektirir.<\/p>\n<p style=\"font-size: 16px;\">ASTM B633'e g\u00f6re \u00e7inko kaplama spesifikasyonlar\u0131, safs\u0131zl\u0131klar\u0131 (\u00f6rne\u011fin, demir &lt;50 ppm) s\u0131n\u0131rlamak i\u00e7in banyo filtrasyonu ve periyodik analiz \u00f6nerir. ASTM B201&#039;e g\u00f6re kromat d\u00f6n\u00fc\u015f\u00fcm\u00fc direnci art\u0131r\u0131r ancak k\u00fc\u00e7\u00fck safs\u0131zl\u0131klar\u0131 gizleyebilir. Test, kabin i\u00e7inde maruz kalmay\u0131 i\u00e7erir ve ASTM D1654 gibi derecelendirme sistemleri kullan\u0131larak de\u011ferlendirme yap\u0131l\u0131r; burada siyah noktalar e\u015fik de\u011ferleri a\u015farsa puanlar\u0131 d\u00fc\u015f\u00fcr\u00fcr.<\/p>\n<div style=\"overflow-x: auto; margin-bottom: 20px;\">\n<table style=\"border-collapse: collapse; width: 100%; margin-bottom: 20px;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Standart<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Gereklilik<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left; background-color: #f2f2f2;\">Siyah Noktalarla \u0130li\u015fkisi<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">ISO 9227<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">NSS test ko\u015fullar\u0131<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Genel korozyon de\u011ferlendirmesi yap\u0131l\u0131r; siyah noktalar kusur olarak kaydedilir.<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">ASTM B117<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Tuz sisi testi<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Ana metalde korozyona neden olmaz; safs\u0131zl\u0131klar erken lekelere yol a\u00e7ar.<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">ASTM B633<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">\u00c7inko kaplama \u00f6zellikleri<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Banyo kirleticilerini s\u0131n\u0131rland\u0131rarak leke olu\u015fumunu \u00f6nler.<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">SAE J2334<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">D\u00f6ng\u00fcsel korozyon testi<\/td>\n<td style=\"border: 1px solid #ddd; padding: 8px;\">Ger\u00e7ek d\u00fcnya performans\u0131n\u0131 de\u011ferlendirir; noktalar safs\u0131zl\u0131k sorunlar\u0131n\u0131 g\u00f6sterir.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"font-size: 16px;\">Bu standartlar, kaplama par\u00e7alar\u0131n\u0131n siyah lekeler gibi erken kusurlar olmadan dayan\u0131kl\u0131l\u0131k gereksinimlerini kar\u015f\u0131lamas\u0131n\u0131 sa\u011flayarak kalite kontrol\u00fcne rehberlik eder.<\/p>\n<\/section>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">\u00c7\u00f6z\u00fcmler ve \u00d6nleme Stratejileri<\/h2>\n<p style=\"font-size: 16px;\">Siyah lekelerin \u00f6nlenmesi, kaplama banyosunun safl\u0131\u011f\u0131n\u0131n korunmas\u0131n\u0131 gerektirir. Stratejiler aras\u0131nda d\u00fczenli filtrasyon, safs\u0131zl\u0131klar\u0131 gidermek i\u00e7in deneme kaplamas\u0131 ve periyodik banyo de\u011fi\u015fimi yer al\u0131r. ASTM A380'e g\u00f6re \u00f6n kaplama temizli\u011fi, alkali ya\u011f \u00e7\u00f6z\u00fcc\u00fcler ve asitli \u00e7\u00f6zeltiler kullan\u0131larak par\u00e7alar\u0131n ya\u011f ve kal\u0131nt\u0131lardan ar\u0131nd\u0131r\u0131lmas\u0131n\u0131 sa\u011flar.<\/p>\n<p style=\"font-size: 16px;\">Titrasyon veya spektroskopi yoluyla yap\u0131lan banyo analizi, organik maddeler i\u00e7in &lt;100 ppm gibi e\u015fik de\u011ferlerle safs\u0131zl\u0131k seviyelerini izler. Parlat\u0131c\u0131lar gibi katk\u0131 maddeleri safs\u0131zl\u0131k etkilerini bast\u0131rabilir, ancak a\u015f\u0131r\u0131 kullan\u0131m ba\u015fka sorunlara yol a\u00e7abilir. Y\u00fcksek safl\u0131k gereksinimleri i\u00e7in, yeni banyolar veya otomatik kontrollere sahip \u00f6zel tedarik\u00e7iler kullan\u0131lmal\u0131d\u0131r.<\/p>\n<p style=\"font-size: 16px;\">Kaplama sonras\u0131, geli\u015ftirilmi\u015f pasivasyon (\u00f6rne\u011fin, \u00fc\u00e7 de\u011ferlikli krom) direnci art\u0131r\u0131r. Lekeler olu\u015fursa, soyma ve yeniden kaplama m\u00fcmk\u00fcnd\u00fcr, ancak maliyetlidir. Amerikan Elektrokaplama ve Y\u00fczey \u0130\u015fleme Derne\u011fi'nin sekt\u00f6rdeki en iyi uygulamalar\u0131, kusurlar\u0131 en aza indirmek i\u00e7in proaktif bak\u0131m\u0131 vurgulamaktad\u0131r.<\/p>\n<\/section>\n<section style=\"margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">De\u011ferlendirme ve Kabul Kriterleri<\/h2>\n<p style=\"font-size: 16px;\">Siyah noktalar\u0131n de\u011ferlendirilmesinde evrensel bir standart bulunmamaktad\u0131r ve bu durum sekt\u00f6re g\u00f6re de\u011fi\u015fiklik g\u00f6stermektedir. Otomotiv spesifikasyonlar\u0131 g\u00f6r\u00fcn\u00fcr t\u00fcm noktalar\u0131 reddedebilirken, genel donan\u0131m k\u00fc\u00e7\u00fck noktalar\u0131 kabul edebilir. Pratik bir kriter: Noktalar izole noktalar olu\u015fturuyorsa (yama \u015feklinde de\u011fil) ve y\u00fczeyin &lt;2,5%&#039;sini kapl\u0131yorsa, korumay\u0131 tehlikeye atmad\u0131klar\u0131 i\u00e7in kabul edilebilir olarak de\u011ferlendirilmelidir.<\/p>\n<p style=\"font-size: 16px;\">Ger\u00e7ek d\u00fcnya ko\u015fullar\u0131ndaki takip \u00e7al\u0131\u015fmalar\u0131, kirliliklerin eser miktarda olmas\u0131 nedeniyle, lekelenmi\u015f par\u00e7alar\u0131n atmosferik maruziyette temiz par\u00e7alara benzer performans g\u00f6sterdi\u011fini ortaya koymaktad\u0131r. Geni\u015f siyah alanlar i\u00e7in, b\u00fct\u00fcnl\u00fc\u011f\u00fcn sa\u011flanmas\u0131 amac\u0131yla yeniden kaplama \u00f6nerilir. Objektif de\u011ferlendirme i\u00e7in b\u00fcy\u00fct\u00fclm\u00fc\u015f inceleme (10x) ve alan hesaplama ara\u00e7lar\u0131 kullan\u0131n.<\/p>\n<p style=\"font-size: 16px;\">Kabul edilebilirlik, maliyet ve riski dengeler; kaplama ba\u011flamlar\u0131na uyarlayarak kusur derecelendirmesi i\u00e7in ISO 4628 gibi standartlara dan\u0131\u015f\u0131n.<\/p>\n<\/section>\n<section class=\"faq\" style=\"margin-top: 20px; margin-bottom: 30px;\">\n<h2 style=\"color: #333; font-size: 24px;\">S\u0131k\u00e7a Sorulan Sorular (SSS)<\/h2>\n<h3 style=\"color: #333; font-size: 18px;\">Tuz p\u00fcsk\u00fcrtme testlerinde beyaz pas olu\u015fmadan \u00f6nce siyah lekelerin nedeni nedir?<\/h3>\n<p style=\"font-size: 16px;\">Siyah lekeler, \u00e7inko veya ana metal korozyonundan de\u011fil, kirlenmi\u015f banyolardan kaynaklanan kaplama tabakas\u0131ndaki safs\u0131zl\u0131klar\u0131n oksidasyonundan kaynaklan\u0131r.<\/p>\n<h3 style=\"color: #333; font-size: 18px;\">Siyah lekeler ger\u00e7ek kullan\u0131mda korozyon direncinin d\u00fc\u015f\u00fck oldu\u011funu mu g\u00f6sterir?<\/h3>\n<p style=\"font-size: 16px;\">Genellikle hay\u0131r; atmosferik maruz kalmada g\u00f6zlemlendi\u011fi gibi, eser miktardaki safs\u0131zl\u0131klar korumay\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde etkilemez, ancak b\u00fcy\u00fck lekeler dikkatli olmay\u0131 gerektirir.<\/p>\n<h3 style=\"color: #333; font-size: 18px;\">Kaplama banyolar\u0131, safs\u0131zl\u0131klar\u0131n \u00f6nlenmesi i\u00e7in nas\u0131l muhafaza edilmelidir?<\/h3>\n<p style=\"font-size: 16px;\">ASTM B633 standard\u0131na g\u00f6re d\u00fczenli filtreleme, analiz ve de\u011fi\u015ftirme i\u015flemleri ile kaplama \u00f6ncesi kapsaml\u0131 temizlik, kirleticileri en aza indirir.<\/p>\n<h3 style=\"color: #333; font-size: 18px;\">Y\u00fcksek ak\u0131m, siyah noktalar\u0131n ge\u00e7erli bir nedeni olabilir mi?<\/h3>\n<p style=\"font-size: 16px;\">M\u00fcmk\u00fcn olsa da, kas\u0131tl\u0131 olmas\u0131 pek olas\u0131 de\u011fil; elektrokaplama standartlar\u0131na g\u00f6re \u00f6ncelikli fakt\u00f6r banyo safl\u0131\u011f\u0131 olmal\u0131d\u0131r.<\/p>\n<h3 style=\"color: #333; font-size: 18px;\">Siyah noktalar i\u00e7in hangi kabul kriterleri kullan\u0131lmal\u0131d\u0131r?<\/h3>\n<p style=\"font-size: 16px;\">E\u011fer lekeler izole edilmi\u015f ve y\u00fczey alan\u0131 &lt;2,5% ise kabul edin; yamalar i\u00e7in, ISO 9227 g\u00f6rsel standartlar\u0131na uygunlu\u011fu sa\u011flamak \u00fczere yeniden kaplama yap\u0131n.<\/p>\n<\/section>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Black Spots in Plated Parts Salt Spray Test Article Outline This article provides a structured overview of black spots in electroplated products during salt spray testing, ensuring logical progression from fundamentals to advanced insights and practical guidance. Introduction to Salt Spray Testing and Black Spots Causes of Black Spots: Impurities in Electroplating Mechanisms of Oxidation [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5909","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/posts\/5909","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/comments?post=5909"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/posts\/5909\/revisions"}],"predecessor-version":[{"id":5911,"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/posts\/5909\/revisions\/5911"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/media?parent=5909"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/categories?post=5909"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/tr\/wp-json\/wp\/v2\/tags?post=5909"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}