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Characteristics of corrosion of galvanized steel wire(2)

Update:10 May 2019
Summary:

In another case, the galvanized steel wire is adhered t […]

In another case, the galvanized steel wire is adhered to the surface of the wire before or after the stranded wire containing acidic or alkaline water droplets or substance 9 which is etched to produce black spots on the surface. The grease is destroyed. 9 The thinning of the galvanized layer makes the life of the galvanized steel wire greatly reduced and the appearance is also affected.
Galvanized steel wire is superior in corrosion resistance in dry or non-polluting environments. However, in a polluted environment, the life expectancy will be greatly shortened, and pre-coating treatment must be performed.
Under normal circumstances, the corrosion of the galvanized steel wire is not completely etched away on the surface of the galvanized steel layer, but in the color coated plate, color steel plate, color coated roll, color steel coil coating and steel wire substrate are poorly combined. The local Ting is first corroded, causing severe local corrosion and loss of performance. From this point of view, the adhesion of the galvanized layer, especially the overall adhesion, is more important than the thickness of the galvanized layer. If the aluminum-zinc layer has poor local adhesion, even if the aluminum-zinc-plated layer is thicker, it will start to rust from the advantage of the attachment. This is similar to the "bucket principle", which is a problem that must be recognized by steel wire galvanizing production technicians.