As the name implies, galvanized sheet is coated with a thin and dense zinc metal layer on the surface of the steel sheet to prevent corrosion of the surface of the steel sheet to extend the service life of the steel sheet. The surface of the metal zinc is silver-white, and the color is beautiful and popular. The main overview of automotive galvanized sheets is:
1. Production process According to the production process and deep processing method of galvanized sheet, galvanized sheet is mainly divided into hot-dip galvanized sheet and galvanized sheet. The former is mainly to immerse the thin steel sheet in the zinc tank, so that the surface of the steel sheet is adhered with a layer of zinc. The hot-dip galvanized sheet after the bath is heated to about 500 ° C to produce an alloy film of zinc and iron on the surface; the latter is the principle of solution electrolysis, which first electrolyzes the Zn2+ ions into the solution and then deposits on the surface of the steel sheet. A uniform and dense layer of zinc metal or alloy is formed.
2.galvanized sheet surface quality According to the surface quality of the galvanized sheet, it can be divided into a single-sided galvanized sheet and a double-sided galvanized sheet. The steel sheet with only one galvanized layer on the surface is called a single-sided galvanized sheet. If the other side of the galvanized steel sheet is coated with a layer of zinc metal, it is called a double-sided differential galvanized sheet due to the difference in thickness.
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