Pressure hose, what are the main corrosion factors?
Article : Ludun
Time : 2015-10-08
PV：
After metal and atmospheric oxygen in the reaction on the surface forming oxide film.In plain carbon steel is formed on oxidation of iron oxide to continue, kept expanding rust, eventually forming holes.Can use paint or resistant to oxidation of the metal (for example, zinc, chromium and nickel) on plating to ensure that the surface of carbon steel, but, as we know, the protection is only a thin film.If the cover was damaged, the following steel began to rust.
Pressure hose corrosion resistance depends on the content of chromium and chromium when adding amount to 10.5%, atmospheric corrosion resistance of steel increased significantly, but the chromium content is higher, although still can improve the corrosion resistance, but not obvious.Reason is that with chromium alloying of steel processing, change the type of surface oxide became similar to that of pure chromium oxide is formed on the metal surface.This tight adhesion of the surface of the rich chromium oxide protection, to prevent further oxidation.This kind of extremely thin oxide layer, through it can see on the surface of the pressure hose natural luster, make the pressure hose has unique surface.And, if damaged surface, exposed by the steel surface and atmospheric response to repair itself, to form the "passive film," continued protection.
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