{"id":16313,"date":"2020-05-19T07:55:26","date_gmt":"2020-05-19T07:55:26","guid":{"rendered":"https:\/\/smartline.in.ua\/?p=16313"},"modified":"2020-11-12T08:53:57","modified_gmt":"2020-11-12T08:53:57","slug":"kak-proiskhodit-khromirovaniye-alyuminiya","status":"publish","type":"post","link":"https:\/\/smartline.in.ua\/en\/how-is-aluminum-chrome-plating\/","title":{"rendered":"How is aluminum chrome plating?"},"content":{"rendered":"<p>Chrome plating of aluminum is performed if it is necessary to increase the heat resistance, surface wear resistance or to provide antifriction properties.<\/p>\r\n<p>Direct chromium plating of aluminum and its alloys with chromium is impossible due to the presence of a natural oxide film, which is firmly adhered to the substrate. This film increases the corrosion resistance of aluminum products, but at the same time prevents obtaining the necessary adhesion of chrome coatings to them.<\/p>\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" width=\"600\" height=\"600\" class=\"wp-image-16314\" src=\"https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley.jpg\" alt=\"\" srcset=\"https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley.jpg 600w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-300x300.jpg 300w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-150x150.jpg 150w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-145x145.jpg 145w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-50x50.jpg 50w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\r\n<\/div>\r\n\r\n<p>If the oxide film is removed and the aluminum is placed in a metal salt solution, more electropositive metals such as copper, nickel, chromium, tin, or cadmium will enter the aluminum salt solution due to the high electronegative potential.<\/p>\r\n<p>At the same time, contact deposition does not allow satisfactory adhesion of these metals to the substrate.<\/p>\r\n<p>Therefore, for aluminum chrome plating, a special surface preparation is used, this process includes:<\/p>\r\n<ul>\r\n<li>Mechanical restoration;<\/li>\r\n<li>Hydro-sandblasting (if necessary);<\/li>\r\n<li>Degreasing with chemicals;<\/li>\r\n<li>Etching;<\/li>\r\n<li>Lightening;<\/li>\r\n<li>Activation.<\/li>\r\n<\/ul>\r\n\r\n<p>Mechanical processing before chrome plating of aluminum (grinding, polishing) is carried out in the presence of irregularities, risks, scratches, drowning on the surface of the part. Defects must be eliminated, since it is in these places that the coating can peel off, especially during heat treatment.<\/p>\r\n<p>After standard surface preparation before chrome plating, aluminum requires activation (removal of the oxide film with simultaneous etching of light) by applying a thin metal layer firmly adhered to the substrate on its surface for subsequent application of the main coating.<\/p>\r\n<p>If you have any questions, you can contact our managers in your favorite way convenient for you.<\/p>\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n<div class=\"wp-block-image\">\r\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" width=\"600\" height=\"600\" class=\"wp-image-16314\" src=\"https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley.jpg\" alt=\"\" srcset=\"https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley.jpg 600w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-300x300.jpg 300w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-150x150.jpg 150w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-145x145.jpg 145w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-50x50.jpg 50w, https:\/\/smartline.in.ua\/wp-content\/uploads\/2020\/05\/hromirovanie_detaley-100x100.jpg 100w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/figure>\r\n<\/div>\r\n<!-- wp:paragraph -->\r\n<p>If the oxide film is removed and the aluminum is placed in a metal salt solution, more electropositive metals such as copper, nickel, chromium, tin, or cadmium will enter the aluminum salt solution due to the high electronegative potential.<\/p>\r\n<p>At the same time, contact deposition does not allow satisfactory adhesion of these metals to the substrate.<\/p>\r\n<p>Therefore, for aluminum chrome plating, a special surface preparation is used, this process includes:<\/p>\r\n<ul>\r\n<li>Mechanical restoration;<\/li>\r\n<li>Hydro-sandblasting (if necessary);<\/li>\r\n<li>Degreasing with chemicals;<\/li>\r\n<li>Etching;<\/li>\r\n<li>Lightening;<\/li>\r\n<li>Activation.<\/li>\r\n<\/ul>\r\n<!-- wp:paragraph -->\r\n<p>Mechanical processing before chrome plating of aluminum (grinding, polishing) is carried out in the presence of irregularities, risks, scratches, drowning on the surface of the part. Defects must be eliminated, since it is in these places that the coating can peel off, especially during heat treatment.<\/p>\r\n<p>After standard surface preparation before chrome plating, aluminum requires activation (removal of the oxide film with simultaneous etching of light) by applying a thin metal layer firmly adhered to the substrate on its surface for subsequent application of the main coating.<\/p>\r\n<p>If you have any questions, you can contact our managers in your favorite way convenient for you.<\/p>\r\n<!-- \/wp:paragraph -->","protected":false},"excerpt":{"rendered":"<p>Chrome plating of aluminum is performed if it is necessary to increase the heat resistance, surface wear resistance or to&#8230;<\/p>\n","protected":false},"author":1,"featured_media":16314,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/posts\/16313"}],"collection":[{"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/comments?post=16313"}],"version-history":[{"count":3,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/posts\/16313\/revisions"}],"predecessor-version":[{"id":16979,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/posts\/16313\/revisions\/16979"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/media\/16314"}],"wp:attachment":[{"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/media?parent=16313"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/categories?post=16313"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/smartline.in.ua\/en\/wp-json\/wp\/v2\/tags?post=16313"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}