{"id":3083,"date":"2021-03-21T05:20:00","date_gmt":"2021-03-21T05:20:00","guid":{"rendered":"https:\/\/zhishangsteel.com\/?p=3083"},"modified":"2022-12-06T07:49:56","modified_gmt":"2022-12-06T07:49:56","slug":"knowledge-of-ppgi","status":"publish","type":"post","link":"https:\/\/baowusteelcompany.com\/knowledge-of-ppgi.html","title":{"rendered":"Knowledge of PPGI"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3083\" class=\"elementor elementor-3083\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-444f80c2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"444f80c2\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-60b0bab2\" data-id=\"60b0bab2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-33483251 elementor-widget elementor-widget-heading\" data-id=\"33483251\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Knowledge of PPGI<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-492f4bc1 elementor-widget elementor-widget-post-info\" data-id=\"492f4bc1\" data-element_type=\"widget\" data-widget_type=\"post-info.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<ul class=\"elementor-inline-items elementor-icon-list-items elementor-post-info\">\n\t\t\t\t\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-c6921fe elementor-inline-item\" itemprop=\"author\">\n\t\t\t\t\t\t<a href=\"https:\/\/baowusteelcompany.com\/author\/infostainlesteel-cn-com\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-user-circle\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-author\">\n\t\t\t\t\t\t\t\t\t\tChina BaoWu Steel\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-4120b71 elementor-inline-item\" itemprop=\"datePublished\">\n\t\t\t\t\t\t<a href=\"https:\/\/baowusteelcompany.com\/2021\/03\/21\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-calendar\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-date\">\n\t\t\t\t\t\t\t\t\t\tMarch 21, 2021\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-f64ceae elementor-inline-item\">\n\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-clock\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-time\">\n\t\t\t\t\t\t\t\t\t\t5:20 am\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t<\/li>\n\t\t\t\t<li class=\"elementor-icon-list-item elementor-repeater-item-d6026ac elementor-inline-item\" itemprop=\"commentCount\">\n\t\t\t\t\t\t<a href=\"https:\/\/baowusteelcompany.com\/knowledge-of-ppgi.html#respond\">\n\t\t\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-icon\">\n\t\t\t\t\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-comment-dots\"><\/i>\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-icon-list-text elementor-post-info__item elementor-post-info__item--type-comments\">\n\t\t\t\t\t\t\t\t\t\tNo Comments\t\t\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t<\/li>\n\t\t\t\t<\/ul>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7dbca55f elementor-widget elementor-widget-text-editor\" data-id=\"7dbca55f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><span data-preserver-spaces=\"true\">PPGI is a product based on a hot-dip galvanized plate and a hot-dip aluminum-zinc plate. After surface pretreatment (chemical degreasing and chemical conversion treatment), one or more layers of organic coatings are coated on the surface and then baked and cured. It is also namedPPGIbecause it is coated with organic coatings of different colors<\/span><\/p><p><span data-preserver-spaces=\"true\">In addition to the protection of the zinc layer, the organic coating on the zinc layer has the function of covering and protecting to prevent the steel strip from rusting, and its service life is about 1.5 times longer than that of the galvanized strip.<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-17fac5c elementor-widget elementor-widget-image\" data-id=\"17fac5c\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72471-1.jpg\" class=\"attachment-large size-large wp-image-3084\" alt=\"Knowledge of PPGI\" srcset=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72471-1.jpg 800w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72471-1-300x225.jpg 300w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72471-1-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5ce0f443 elementor-widget elementor-widget-heading\" data-id=\"5ce0f443\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">PPGI application:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d442c94 elementor-widget elementor-widget-text-editor\" data-id=\"d442c94\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>It has lightweight, has a beautiful appearance, and has good anti-corrosion performance, and can be directly processed, mainly used in advertising, construction, household appliances, electrical appliances, furniture, and transportation industries.<br \/>According to the different environments, we choose suitable resin, such as polyester silicon modified polyester, polyvinyl chloride plastic Sol, polyvinylidene chloride. The user can choose according to the use<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2ba1524d elementor-widget elementor-widget-image\" data-id=\"2ba1524d\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72472-2.jpg\" title=\"Knowledge of PPGI\" alt=\"Knowledge of PPGI\" loading=\"lazy\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e4f55ec elementor-widget elementor-widget-heading\" data-id=\"e4f55ec\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Type of coating structure:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-41b9d480 elementor-widget elementor-widget-text-editor\" data-id=\"41b9d480\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>2\/1\uff1aTwice on the top, once on the bottom, twice on the oven.<br \/>2\/1M: The upper and lower surfaces are painted twice and baked once.<br \/>2\/2\uff1aThe upper and lower surfaces are painted twice and baked twice.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0ae2375 elementor-widget elementor-widget-heading\" data-id=\"0ae2375\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Use of different coating structures:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-165eaa3e elementor-widget elementor-widget-text-editor\" data-id=\"165eaa3e\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>2\/1:Single-layer back surface paint corrosion resistance, scratch resistance is poor, but has good adhesion, mainly used in the sandwich panel;<br \/>2\/1M\uff1a Good corrosion resistance, scratch resistance, and processing molding, with good adhesion, suitable for single-layer profiled and sandwich panels.<br \/>2\/2\uff1aThe corrosion resistance, scratch resistance, and processing formability of double-layer back coating are good, most of them are used in single-layer press-type plates, but their poor adhesion, not suitable for a sandwich plate.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d52284 elementor-widget elementor-widget-heading\" data-id=\"5d52284\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Classification of ppgisubstrate:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15bf4811 elementor-widget elementor-widget-heading\" data-id=\"15bf4811\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Hot Dip galvanizing substrate:<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3adfa9e1 elementor-widget elementor-widget-text-editor\" data-id=\"3adfa9e1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>The product obtained by coating the organic coating on the hot-dip galvanized steel sheet is the hot-dip galvanized color-coated sheet. Hot-dip galvanized color coated sheet in addition to the role of zinc protection, the surface of the organic coating also plays the role of insulation protection, Rust Prevention, longer service life than hot-dip galvanized sheet. The zinc content of hot-dip galvanizing substrate is generally 180g\/m2(double-sided), and the highest zinc content of hot-dip galvanizing substrate for building exterior is 275g\/m2.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ebf2f02 elementor-widget elementor-widget-heading\" data-id=\"ebf2f02\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Hot Dip aluminized zinc substrate:<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1208618 elementor-widget elementor-widget-text-editor\" data-id=\"1208618\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Hot Dip aluminized zinc steel (55% al-zn) is used as the new coating substrate, usually containing 150g\/m2 (double side) of aluminized zinc. The corrosion resistance of the hot-dip galvanized sheet is 2 ~ 5 times as high as that of a hot-dip galvanized sheet. Continuous or intermittent use at temperatures up to 490 \u00b0C will not result in severe oxidation or scale formation. The ability to reflect heat and light is 2 times that of hot-dip galvanized steel sheet, and the reflectivity is more than 0.75 is the ideal building material to save energy.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-35a6ce3 elementor-widget elementor-widget-heading\" data-id=\"35a6ce3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Characteristics of PPGI substrate:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-90c23a4 elementor-widget elementor-widget-text-editor\" data-id=\"90c23a4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Hot-dip galvanized substrate: a sheet of steel is dipped into a molten zinc bath to form a zinc coating on the surface. The galvanized sheet has good adhesion and weldability.<br \/>Hot-dip aluminized zinc substrate: the product is 55% al-Foshan-zn plated, with excellent anti-corrosion properties, and its service life is more than four times that of ordinary galvanized steel. It\u2019s a replacement for galvanized sheets.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0f5857e elementor-widget elementor-widget-image\" data-id=\"0f5857e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72473.jpg\" class=\"attachment-large size-large wp-image-3086\" alt=\"Knowledge of PPGI\" srcset=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72473.jpg 800w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72473-300x225.jpg 300w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72473-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b5150b1 elementor-widget elementor-widget-heading\" data-id=\"b5150b1\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Product characteristic:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ff90802 elementor-widget elementor-widget-text-editor\" data-id=\"ff90802\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>\uff081\uff09good durability, corrosion resistance, and longer life compared to galvanized steel;<br \/>\uff082\uff09 good heat resistance, and galvanized steel sheet compared to the more difficult to change color at high temperature;<br \/>\uff083\uff09It has good thermal reflectivity <br \/>\uff084\uff09 it has similar machinability and spraying performance to galvanized steel sheet<br \/>\uff085\uff09It has good welding performance. <br \/>With a good performance to price ratio, durable performance, and very competitive price. As a result, both architects, engineers, and manufacturers have been widely used in industrial buildings, steel structures, and civil facilities, such as garage doors, gutters, and roofs<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e90b56 elementor-widget elementor-widget-heading\" data-id=\"5e90b56\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">PPGI coating:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4da5bb9 elementor-widget elementor-widget-text-editor\" data-id=\"4da5bb9\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>1. Hot Dip galvanizing production process: cold rolled coil \u2192 uncoiler \u2192 coiler leveler \u2192 thickness gauge \u2192 double shear \u2192 automatic lap welding machine \u2192 pre-cleaning \u2192 inlet looper \u2192 continuous annealing furnace \u2192 jet electric induction heating ceramic zinc pot \u2192 gas knife \u2192 small zinc spangle or alloy furnace (reserved)\u2192 cooling section after plating \u2192 coating thickness gauge \u2192 water quenching tank \u2192 dryer \u2192 skin pass \u2192 stretch straightening machine \u2192 chemical treatment (chromic acid passivation)\u2192 dryer \u2192 outlet looper \u2192 electrostatic oiling \u2192 coiler\u3002 The technological content in the process is the highest annealing and galvanizing two parts, so here to focus on annealing and galvanizing. Annealing is a metal heat treatment process in which the steel is heated to a predetermined temperature and then cooled slowly after a certain period.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ddec969 elementor-widget elementor-widget-image\" data-id=\"ddec969\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72474.jpg\" class=\"attachment-large size-large wp-image-3087\" alt=\"Knowledge of PPGI\" srcset=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72474.jpg 800w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72474-300x225.jpg 300w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72474-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-27d30b9 elementor-widget elementor-widget-heading\" data-id=\"27d30b9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">The purpose of annealing\uff1a<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-0d00e49 elementor-widget elementor-widget-text-editor\" data-id=\"0d00e49\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>(1) to improve or eliminate all kinds of structural defects and residual stresses in the process of casting, forging, cold rolling, and welding, and to prevent deformation and cracking. <br \/>(2) soften the workpiece for cutting. <br \/>(3) refine the grain and improve the structure to improve the mechanical properties of the workpiece.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2c5c68c elementor-widget elementor-widget-heading\" data-id=\"2c5c68c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">HOT-DIP GALVANIZING:<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9e6fa1 elementor-widget elementor-widget-text-editor\" data-id=\"f9e6fa1\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>At present, the hot-dip galvanizing production process mainly has the improved senjimir method, American steel joint method, Huilin method, and Silas method. Considering the investment, product quality, output, safety, energy-saving, and consumption reduction, the improved senjimir method is more advantageous, so it plays a leading role in the hot-dip galvanizing process.<br \/>The modified senior method uses non-oxidation heating, and the oxidation on the surface of the strip is very weak, so it is easy to reduce the oxide<br \/>In the improved senjimir process, the steel strip is first heated in an oxidation-free furnace with the temperature ranging from 1150 \u00b0C to 1250 \u00b0C, and then the oxide on the surface of the steel strip is quickly reduced in a reduction furnace with a protective atmosphere (N2 + H2) above 950 \u00b0C, the Reduced Steel Strip is put into a hot-dip pot in a sealed chamber with protective atmosphere. The temperature of hot-dip galvanizing is 680 ~ 750 \u00b0C. for hot-dip galvanizing, a special process is needed to control the temperature because the melting point of zinc is 420 \u00b0c and the vaporization temperature is 908 \u00b0C, the melting point of aluminum is 660 \u00b0c, the vaporization temperature is about 1200 \u00b0C, and the melting point of silicon is 1410 \u00b0C. The thickness and surface quality of the zinc coating is guaranteed by an air knife. After the hot-dip galvanizing steel strip comes out of the bath, the Strip is rapidly cooled to below 480 \u00b0C by controlled cooling. Finally, the Strip is cooled slowly into the passivation tank, and the coated steel sheet is passivated, a protective and decorative oxide film is formed, and then the strip is straightened online to improve its shape and mechanical properties. Finally, the Strip is taken up at the tail of the unit by various conveying equipment<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2f2e55b elementor-widget elementor-widget-text-editor\" data-id=\"2f2e55b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<strong>The surface of the coating see table \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/strong>\n\n\n<table>\n<tbody>\n<tr>\n<td >Category Item<\/td>\n<td >Categories<\/td>\n<td >Code name<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\" >Type of coating<\/td>\n<td >Pure\u00a0zinc\u00a0coating<\/td>\n<td >Z<\/td>\n<\/tr>\n<tr>\n<td >Zinc-iron\u00a0alloy\u00a0coating<\/td>\n<td >ZF<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"2\" >Coating form\u00a0a\uff0cb\n\n&nbsp;<\/td>\n<td >&nbsp;\n\nEqual\u00a0thickness coating\u00a0A\u2002\uff08g\/m2\uff09\/B\u2002\uff08g\/m2\u2002\uff09\u2002\uff08A=B\uff09\n\n&nbsp;<\/td>\n<td >\u2002A\/B<\/td>\n<\/tr>\n<tr>\n<td >Differential coating\u00a0\u2002A\u2002\uff08g\/m2\uff09\/B\u2002\uff08g\/m2\uff09\u2002\uff08A\u2260B\uff09\n\n&nbsp;<\/td>\n<td >&nbsp;<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"6\" >Surface texture<\/td>\n<td >Normal zinc<\/td>\n<td >Z<\/td>\n<\/tr>\n<tr>\n<td >Smooth zinc<\/td>\n<td >G<\/td>\n<\/tr>\n<tr>\n<td >Small zinc<\/td>\n<td >X<\/td>\n<\/tr>\n<tr>\n<td >Smooth small zinc<\/td>\n<td >GX<\/td>\n<\/tr>\n<tr>\n<td >Zero zinc<\/td>\n<td >N<\/td>\n<\/tr>\n<tr>\n<td >Zinc-iron alloy<\/td>\n<td >R<\/td>\n<\/tr>\n<tr>\n<td rowspan=\"3\" >Surface treatment<\/td>\n<td >Chromic acid passivation<\/td>\n<td >L<\/td>\n<\/tr>\n<tr>\n<td >Oiled<\/td>\n<td >Y<\/td>\n<\/tr>\n<tr>\n<td >Chromic acid passivation+Oiled<\/td>\n<td >LY<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1c4a1a elementor-widget elementor-widget-heading\" data-id=\"a1c4a1a\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Coating of color coated sheet:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a161ba6 elementor-widget elementor-widget-heading\" data-id=\"a161ba6\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Color coiling production process:<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3fbf027 elementor-widget elementor-widget-text-editor\" data-id=\"3fbf027\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>Inlet End \u2192 uncoiler \u2192 pre-cleaning \u2192 inlet looper \u2192 cleaning \u2192 coater \u2192 chemical coater \u2192 drying oven \u2192 primary coater \u2192 drying oven \u2192 cooling \u2192 finishing oven \u2192 drying oven \u2192 cooling \u2192 export looper \u2192 shearer \u2192 coiler. In the above process, if the cleaning and degreasing process is not good, the adhesion between the primer and the galvanized sheet is not good. <br \/>In addition, in the production process of PPGI color difference is due to (1) paint itself caused by the color difference. (2) The chromatic aberration is caused by the drying oven process. (3) thickness of paint film.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-95c2c5d elementor-widget elementor-widget-heading\" data-id=\"95c2c5d\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">The use of PPGI:<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11fec8f elementor-widget elementor-widget-text-editor\" data-id=\"11fec8f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p>If the use of the page is not appropriate, the result is not a high standard of materials, resulting in waste, is the material performance can not meet the use of requirements, the use of the need to choose according to the use of the page.<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9053d2f elementor-widget elementor-widget-text-editor\" data-id=\"9053d2f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><span data-preserver-spaces=\"true\">1\u3001The choice of substrate\u00a0<\/span><\/strong><\/p><p><span data-preserver-spaces=\"true\">(1) cold-rolled substrate: poor corrosion resistance, can be used to make home appliances parts<\/span><\/p><p><span data-preserver-spaces=\"true\">(2) galvanized substrate: Corrosion Resistance Than cold-rolled plate, generally for home appliances shell, furniture, interior decoration.\u00a0<\/span><\/p><p><span data-preserver-spaces=\"true\">(3) hot-dip (aluminum) zinc substrate: corrosion resistance, external construction.<\/span><\/p><p>\u00a0<\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-63a14bc elementor-widget elementor-widget-text-editor\" data-id=\"63a14bc\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><span data-preserver-spaces=\"true\">2\u3001Coating Selection<\/span><\/strong><\/p><p><span data-preserver-spaces=\"true\">(1) color: General Color for White Gray, sea blue, special color order to increase the price and order time.\u00a0<\/span><\/p><p><span data-preserver-spaces=\"true\">(2) GLOSS: the Gloss of the film is high, medium, and low. General Construction for 30-70 something O low gloss color coated roll<\/span><\/p><p><span data-preserver-spaces=\"true\">(3) corrosion resistance.\u00a0<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-368e218 elementor-widget elementor-widget-text-editor\" data-id=\"368e218\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<strong><span data-preserver-spaces=\"true\">3\u3001The choice of coating technology\u00a0<\/span><\/strong>\n\n<span data-preserver-spaces=\"true\">general outer plate with 2\/2 PPGI, field composite plate type can also use 2\/1 PPGI, EPS composite plate must use 2\/1 PPGI, to have better adhesion, the aluminized zinc plate is generally used for roofing site composite plate after some process can also be used aluminized zinc plate to do EPS composite plate.\u00a0<\/span>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-8a0f21b elementor-widget elementor-widget-image\" data-id=\"8a0f21b\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"600\" src=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72475.jpg\" class=\"attachment-large size-large wp-image-3088\" alt=\"Global crude steel production up 4.8% in January\" srcset=\"https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72475.jpg 800w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72475-300x225.jpg 300w, https:\/\/baowusteelcompany.com\/wp-content\/uploads\/2021\/10\/\u56fe\u72475-768x576.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7595e00 elementor-widget elementor-widget-text-editor\" data-id=\"7595e00\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<p><strong><span data-preserver-spaces=\"true\">4\u3001Attention in the use of the problem<\/span><\/strong><\/p><p><strong><span data-preserver-spaces=\"true\">\u00a0<\/span><\/strong><span data-preserver-spaces=\"true\">(1) PPGI used in a building, the use of the same manufacturer the same production line at the same time products, to avoid mixing.<\/span><\/p><p><span data-preserver-spaces=\"true\">(2) the necessary peritoneum during pressing forming, such as PVDF coated color coated sheet, aluminized zinc-coated sheet.<\/span><\/p><p><span data-preserver-spaces=\"true\">(3) when the PPGI is sheared, the surface of the equipment in contact with the PPGI should be covered with a rubber mat.\u00a0<\/span><\/p><p><span data-preserver-spaces=\"true\">(4) remove the metal chips in time to avoid scratching the coating on the surface of the PPGI.<\/span><\/p><p><span data-preserver-spaces=\"true\">(5) zinc can be used as a sacrificial anode to protect the steel, but when in use, try to place the incised part of the PPGI in the hidden part, there are strict requirements of the project to protect the incisions.<\/span><\/p><p><span data-preserver-spaces=\"true\">(6) after the installation of the project, the welding spots and metal chips leftover from the construction should be removed in time to avoid corrosion of the color plate<\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Knowledge of PPGI PPGI is a product based on a hot-dip galvanized plate and a hot-dip aluminum-zinc plate. After surface pretreatment (chemical degreasing and chemical conversion<span class=\"excerpt-hellip\"> [\u2026]<\/span><\/p>\n","protected":false},"author":1,"featured_media":3087,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"rank_math_lock_modified_date":false,"footnotes":""},"categories":[17],"tags":[],"class_list":["post-3083","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-products-knowledge"],"_links":{"self":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts\/3083"}],"collection":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/comments?post=3083"}],"version-history":[{"count":15,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts\/3083\/revisions"}],"predecessor-version":[{"id":4683,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/posts\/3083\/revisions\/4683"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/media\/3087"}],"wp:attachment":[{"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/media?parent=3083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/categories?post=3083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/baowusteelcompany.com\/wp-json\/wp\/v2\/tags?post=3083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}