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How to check gi wire quality

The standard galvanized wire coating adhesion requirements, the zinc layer of the plated parts should be combined with the base metal to have sufficient adhesion strength, and it does not fall off after the hammering test, and does not bulge.

Galvanized wire adopts different requirements according to different industrial requirements. In the smelting installation, different alloying elements such as chromium, molybdenum, nickel, etc. are placed, and the material that jumps out is called alloy ferroniobium.

The galvanized wire directly from the iron in the iron furnace, the main components are oxidation grade, silica and some other things, and then add carbon, silicon and other elements into it. This kind of material is what we usually call pig iron.

When the thickness of commonly used galvanized wire plating parts is 3-4 mm, the amount of zinc adhesion should be less than 460 g/m, that is, the average thickness of the zinc layer is not less than 65 μm.

When the thickness of the plated part is more than 4 mm, the amount of zinc adhered should not be less than 610 g/m, that is, the average thickness of the zinc layer is not less than 86 μm; the plating of the standard galvanized wire must be uniform, and the galvanized layer is substantially uniform with copper sulfate. The solution test etched five times without iron.


Post time: Nov-13-2019
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