A. When the thickness of the plating is 3-4 mm, the zinc attachment amount should be less than 460 grams/meter, 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 attachment amount should not be less than 610 grams/meter, that is, the average thickness of the zinc layer is not 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 should be firmly combined with the base metal and have sufficient adhesion strength, and will not fall off or bulge after hammering test.
Corrosion or discoloration of galvanized iron wire in the atmosphere due to oxygen, moisture and other pollution impurities is called rust or rust. After the galvanized iron wire rust, the light will affect the appearance quality, the serious will affect the use, and even cause scrap, so the galvanized iron wire must be properly kept and pay attention to rust prevention.
According to the galvanized iron wire manufacturers, galvanized iron wire is the selection of excellent low carbon steel, through drawing forming, pickling rust removal, high temperature annealing, hot galvanizing, cooling and other processes. Galvanized iron wire should pay attention to the following points during use:
① The diameter of galvanized iron wire for drawing shall not be less than 4mm, and the diameter of galvanized iron wire for binding shall not be less than 2.6mm.
② Orchard special electroplating process wire shall not be used for waist band compression reinforcement, usually not used for all binding.
③ The galvanized iron wire shall not be damaged when twisted.
④ Prevent the operation method of using more than two strands of galvanized iron wire to wrap around at one time.
Post time: 16-01-24