Galvanized wire is widely used in the manufacture of cable core, steel strand, mesh, greenhouses and grape tallows, mainly used for tension or suspension. So, galvanized silk has what kind of industry standards? Well-known electric galvanized wire production factory
Technical requirement
A, the coating surface is continuous and practical smooth.
B. The installation and combination of plating parts do not allow the existence of flow hanging, dripping or slag.
C. There should be no leakage plating on the surface of the plating parts.
a. The leakage plating area is the black spot with diameter less than 0.5 mm.
b. Droplet or slag not exceeding 1.5 mm in height at unjoined or unjoined angles.
c. Contact scars between plating parts and hanging tools and operating tools, but no iron is exposed.
Zinc attachment amount and zinc layer thickness
A. When the thickness of the plating is 3-4 mm, the zinc adhesion should be less than 460g/m, that is, the average thickness of the zinc layer is not less than 65 microns.
B. When the thickness of the plating is greater than 4 mm, the zinc adhesion should not be less than 610g/m, that is, the average thickness of the zinc layer should not be less than 86 microns.
C, coating uniformity: galvanized layer is basically uniform with copper sulfate solution test etched five times without exposing iron.
D, coating adhesion; The zinc layer of the plating parts should be firmly combined with the base metal with sufficient adhesion strength, and will not fall off or bulge after the hammer test.
Requirements for parts to be plated
A, the surface of the plated parts should be smooth, and there is no dirt that cannot be cleaned by pickling method. Such as paint, grease, cement, asphalt and excessive rotten harmful substances.
B. All welds of the components shall be sealed without air.
C. Pipe fittings and containers shall have exhaust and zinc inlet holes.
D. The workpiece should be finished steel pipe without thread. If there is thread, it should be protected.
