{"id":1736,"date":"2026-01-05T15:00:04","date_gmt":"2026-01-05T08:00:04","guid":{"rendered":"https:\/\/dk-metalsurfacetreatment.com\/?p=1736"},"modified":"2026-01-05T15:00:38","modified_gmt":"2026-01-05T08:00:38","slug":"passivation-for-hdg","status":"publish","type":"post","link":"https:\/\/dk-metalsurfacetreatment.com\/en\/passivation-for-hdg\/","title":{"rendered":"Passivation for HDG"},"content":{"rendered":"<ul>\n<li style=\"text-align: justify;\"><strong>Chromium-6 free; based on chromium trivalent<\/strong><\/li>\n<li style=\"text-align: justify;\"><strong>For direct use in the quench tank or cooling bath<\/strong><\/li>\n<li style=\"text-align: justify;\"><strong>Excellent white rust protection<\/strong><\/li>\n<\/ul>\n<p style=\"text-align: justify;\"><strong>Passivation products free of hexavalent chrome. Trivalent chrome, water-based passivations for freshly galvanised steel surfaces. A passivation forms a layer that gives improved \u201cwhite rust\u201d corrosion resistance on galvanised steel surfaces. A HDG surface treated with AD passivation does not give white rust for very long times under normal storage conditions.<\/strong><\/p>\n<p style=\"text-align: justify;\">The best Chrome(VI)-free passivations available<\/p>\n<p style=\"text-align: justify;\">AD Chemicals has developed a range of passivation products designed to meet the needs of general galvanizers (HDG). Ensuring excellent white rust protection and an easy bath maintanance.<\/p>\n<p style=\"text-align: justify;\">Passivation product characteristics:<\/p>\n<ul style=\"text-align: justify;\">\n<li>Passivation layer on fresh galvanized steel<\/li>\n<li>Chrome(III) based<\/li>\n<li>Protection against white rust<\/li>\n<li>Direct use in quench tank\/cooling bath or in a passivation zone<\/li>\n<li>Provides bare corrosion resistance during storage and transport<\/li>\n<li>Competes easily with Chrome (VI) based pre-treatments<\/li>\n<li>Free of substances of very high concern<\/li>\n<\/ul>\n<p style=\"text-align: justify;\">Types of passivation<\/p>\n<p style=\"text-align: justify;\">Direct use in quench tank (or cooling bath):<\/p>\n<ul style=\"text-align: justify;\">\n<li><a href=\"https:\/\/www.admetalsurfacetreatment.com\/hdg-passivation-duplex-pretreatment-additives-galvanizing\/passivation-hdg-chromefree\/passivation-quench-tank-chromefree-hdg\/\" target=\"_blank\" rel=\"noopener\">Passivation ADL-32<\/a><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">After cooling bath (in dedicated passivation zone):<\/p>\n<ul style=\"text-align: justify;\">\n<li><a href=\"https:\/\/www.admetalsurfacetreatment.com\/hdg-passivation-duplex-pretreatment-additives-galvanizing\/passivation-hdg-chromefree\/passivation-for-cooling-bath-chromefree\/\" target=\"_blank\" rel=\"noopener\">Passivation ADL-3P<\/a><\/li>\n<\/ul>\n<p style=\"text-align: justify;\">In manual process:<\/p>\n<ul>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/www.admetalsurfacetreatment.com\/hdg-passivation-duplex-pretreatment-additives-galvanizing\/passivation-hdg-chromefree\/aluminium-pretreatment-qualicoat\/\" target=\"_blank\" rel=\"noopener\">Spray Passivation<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Chromium-6 free; based on chromium trivalent For direct use in the quench tank or cooling bath Excellent white rust protection Passivation products free of hexavalent chrome. Trivalent chrome, water-based passivations for freshly galvanised steel surfaces. A passivation forms a layer that gives improved \u201cwhite rust\u201d corrosion resistance on galvanised steel surfaces. A HDG surface treated<\/p>\n","protected":false},"author":3,"featured_media":2286,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[45,24],"tags":[],"class_list":["post-1736","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-passivation-hdg","category-products"],"_links":{"self":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1736","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=1736"}],"version-history":[{"count":2,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1736\/revisions"}],"predecessor-version":[{"id":1738,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/posts\/1736\/revisions\/1738"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media\/2286"}],"wp:attachment":[{"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/media?parent=1736"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/categories?post=1736"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dk-metalsurfacetreatment.com\/en\/wp-json\/wp\/v2\/tags?post=1736"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}