{"id":1644,"date":"2021-10-18T08:05:02","date_gmt":"2021-10-18T01:05:02","guid":{"rendered":"https:\/\/dk-metalsurfacetreatment.com\/?p=1644"},"modified":"2026-06-19T09:01:13","modified_gmt":"2026-06-19T02:01:13","slug":"iron-phosphating-passivation","status":"publish","type":"post","link":"https:\/\/dk-metalsurfacetreatment.com\/en\/iron-phosphating-passivation\/","title":{"rendered":"Iron Phosphating Passivation"},"content":{"rendered":"<ul>\n<li style=\"text-align: justify;\"><strong>Upgrade your iron phosphating process in compliance with Qualisteelcoat standards<\/strong><\/li>\n<li style=\"text-align: justify;\"><strong>Passivation that can be easily added in the last demi-rinse bath<\/strong><\/li>\n<li style=\"text-align: justify;\"><strong>Improved corrosion protection and paint adhesion properties<\/strong><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>PreCoat ADL-4p Passivation for iron phosphating is a hexavalent chrome free passivation treatment that can be used to upgrade the quality of chemical treatment in traditional iron phospahting processes. It as added to the last demi-rinse bath. PreCoat improves corrosion resistance and paint adhesion properties.<\/strong><\/p>\n<p style=\"text-align: justify;\">AD Chemicals has built a reputation for innovation and product improvement and has developed a range of additive products for the phosphating process based on trivalent chromium and polymers. PreCoat ADL-4P is one of these developments, making traditional iron phosphating processes more robust.<\/p>\n<p style=\"text-align: justify;\">PreCoat ADL-4P Passivation for iron phosphating process<\/p>\n<p style=\"text-align: justify;\">PreCoat is a passivation based on trivalent chromium and is added to the last demi-rinse bath of an iron phsopating process. It creates a passivaiton layer on the metal surface that significantly improves adhesion and corrosion resistance of the finished product.<\/p>\n<p style=\"text-align: justify;\">PreCoat is tested according to Qualisteelcoat standards as well as extensive laboratory tests on test pieces treated at customer processing lines to demonstrate the effectiveness of PreCoat ADL-4P.<\/p>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\"><\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/iron-phosphating-passivation\/#Laboratory_tests_passivation_PreCoat_ADL-4P\" >Laboratory tests passivation PreCoat ADL-4P<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/iron-phosphating-passivation\/#A_common_line_set_up_for_iron_phosphating_is_a_process_with_7_baths_See_in_below_image_where_Passivation_ADl-4p_is_added_The_product_can_also_be_added_to_the_last_rinsing_bath_of_3_stage_iron_phosphating_processes_Suitable_for_dipping_and_spraying_lines\" >A common line set up for iron phosphating is a process with 7 baths. See in below image where Passivation ADl-4p is added. The product can also be added to the last rinsing bath of 3 stage iron phosphating processes. Suitable for dipping and spraying lines.<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/iron-phosphating-passivation\/#PreCoat_ADL-4P_%E2%80%93_The_smart_upgrade_and_replacement_for_iron_phosphating\" >PreCoat ADL-4P \u2013 The smart upgrade and replacement for iron phosphating<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/dk-metalsurfacetreatment.com\/en\/iron-phosphating-passivation\/#Exceeding_the_market_standard\" >Exceeding the market standard<\/a><\/li><\/ul><\/nav><\/div>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Laboratory_tests_passivation_PreCoat_ADL-4P\"><\/span><strong>Laboratory tests passivation PreCoat ADL-4P<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">Test set up passivation PreCoat ADL-4P Panels with and without PreCoat where treated at the same time by a spraying iron phosphate line (spray).<\/p>\n<ul style=\"text-align: justify;\">\n<li>3 minutes of phosphating, 3 minutes of rinsing<\/li>\n<li>The bath used for rinsing was relatively clean (having a conductivity of 300 \u03bcS).<\/li>\n<li>Half of the panels where sequently treated by misting with PreCoat ADL-4P (bath solution).<\/li>\n<li>Afterwards all panels were coated<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Next step was 500 hours salt spray testing (ASTM B117) in compliance with\u00a0 Qualisteelcoat standards<\/p>\n<p style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3946 size-full aligncenter\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2021\/10\/THU-DONG-HOA-CHO-PHOT-PHAT-SAT.png\" alt=\"\" width=\"904\" height=\"774\"><\/p>\n<p style=\"text-align: justify;\"><strong>Line set up, dipping\/spraying line<\/strong><\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"A_common_line_set_up_for_iron_phosphating_is_a_process_with_7_baths_See_in_below_image_where_Passivation_ADl-4p_is_added_The_product_can_also_be_added_to_the_last_rinsing_bath_of_3_stage_iron_phosphating_processes_Suitable_for_dipping_and_spraying_lines\"><\/span>A common line set up for iron phosphating is a process with 7 baths. See in below image where Passivation ADl-4p is added. The product can also be added to the last rinsing bath of 3 stage iron phosphating processes. Suitable for dipping and spraying lines.<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h2 style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-3948 size-full aligncenter\" src=\"https:\/\/dk-metalsurfacetreatment.com\/wp-content\/uploads\/2021\/10\/THU-DONG-HOA-CHO-PS-SAT.png\" alt=\"\" width=\"904\" height=\"774\"><\/h2>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"PreCoat_ADL-4P_%E2%80%93_The_smart_upgrade_and_replacement_for_iron_phosphating\"><\/span>PreCoat ADL-4P \u2013 The smart upgrade and replacement for iron phosphating<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">When combined with\u00a0<strong>Cleaner Neutral<\/strong>,\u00a0<strong>PreCoat ADL-4P<\/strong>\u00a0provides an excellent alternative to traditional iron phosphating processes. This hexavalent chromium-free passivation is added to the final demineralized rinse stage and significantly improves both corrosion resistance and paint adhesion. Even existing phosphating lines can benefit from PreCoat ADL-4P as an\u00a0<strong>upgrade<\/strong>, enhancing performance and sustainability in line with standards such as Qualisteelcoat.<\/p>\n<h2 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"Exceeding_the_market_standard\"><\/span>Exceeding the market standard<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p style=\"text-align: justify;\">With PreCoat ADL-4P AD Chemicals proves the traditional market standard of iron phosphating process can be exceeded. PreCoat is economical and quality wise a solid upgrade that could benefit almost every iron phosphating process.<\/p>\n<p><strong><em>See some chemicals for the steel industry here:<\/em><\/strong>\u00a0<a href=\"https:\/\/dk-chemicals.vn\/\" target=\"_blank\" rel=\"noopener\">https:\/\/dk-chemicals.vn\/<\/a><br \/>\n<em><strong>See some of our other products here:<\/strong><\/em>\u00a0<a href=\"https:\/\/dk-metalsurfacetreatment.com\/san-pham-cong-ty-tnhh-hoa-chat-d-k\/\">https:\/\/dk-metalsurfacetreatment.com\/san-pham-cong-ty-tnhh-hoa-chat-d-k\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Upgrade your iron phosphating process in compliance with Qualisteelcoat standards Passivation that can be easily added in the last demi-rinse bath Improved corrosion protection and paint adhesion properties PreCoat ADL-4p Passivation for iron phosphating is a hexavalent chrome free passivation treatment that can be used to upgrade the quality of chemical treatment in traditional iron<\/p>\n","protected":false},"author":3,"featured_media":2295,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[39,24],"tags":[],"class_list":["post-1644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general-industry-steel-en","category-products"],"_links":{"self":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1644","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/comments?post=1644"}],"version-history":[{"count":9,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1644\/revisions"}],"predecessor-version":[{"id":3951,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1644\/revisions\/3951"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media\/2295"}],"wp:attachment":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media?parent=1644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/categories?post=1644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/tags?post=1644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}