Fluorocarbon coating plate (1) coated with a fluorocarbon coating plate is divided into two systems, three-coat system and four-coat system, generally should adopt a multi-layer coating system. Two coating system: 5 ~ 10μm fluorocarbon paint and fluorocarbon finish 20 ~ 30μm composition, the total thickness of the film is generally not aluminum staircase stretcher should be less than 35μm. Only be used for the general environment. Three-coat system: 5 ~ 10μm of fluorocarbon primer, 20 ~ 30μm fluorocarbon paint and varnish 10 ~ 20μm fluorocarbon composition, total film thickness of not less than 45μm. For air pollution, industrial areas and coastal and other harsh environment areas. Four coating systems: Four coating system has two. One is when using large particle aluminum pigments, required between a primer and topcoat additional intermediate fluorocarbon paint 20μm; the other is added between the primer and paint together polyamide and polyurethane blends dense coating to improve the corrosion resistance, increasing the life of fluorocarbon aluminum. Because most of the fluorocarbon is a sponge structure, porosity, dross, can not prevent the free positive and negative ions in the air to penetrate to the metal plate substrate. Therefore, this coating system is more suitable for air pollution, poor industrial areas and coastal zone environment. (2) fluorocarbon paint cure: there should be a few painted on several baking, make each paint is fully cured, form a good adhesion, corrosion resistance, fade resistance, avoid multi-coated little roast. (3) In the selection of fluorocarbon paint aluminum, should concern fluorocarbon brand and the major technical indicators, and the fluorine resin content should be ≥ 70%. A) common iron cast aluminum crucible Crucible, high recovery of zinc slag, may also be cast and welded steel crucibles. New and old crucible crucible long unused, before use shall blow, and heated to 700--800 degrees, keeping 2--4 hours to burn off the inner wall of the crucible is attached to water and flammable substances, dross acquisition, Leave to cool to below 300 degrees when, carefully clean the crucible wall, spray paint at a temperature of not less than 200 degrees. Crucible before use should be preheated to dark red (500 - 600 degrees), zinc dross and incubated more than two hours. Before the new crucible melting outside, it is best to melting furnace with a grade back charge. (B) Prepare bell smelting tools, pressure scoop, mixing spoons, ladles, etc. ingot mold should be preheated before use, and at a temperature of 150 degrees --- 200 degrees coated with a protective coating, and thoroughly dried, drying temperature is 200--400 degrees, more than two hours holding time, should be completely removed after use on adhering to the surface oxides, fluorides, (preferably carried out blowing sand). Acquisition of waste dross | Sun Shine scrap metal recycling (Online) | dross recycling scrap metal from the Linyi City Shengxin Limited. Linyi City Shengxin scrap metal recycling Ltd. (shengxin.tz1288.com) Shandong Linyi, leading scrap metal, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Shengxin scrap metal recycling leadership with the staff warmly welcome all inquiries negotiations to create Shengxin scrap metal recycling better future.