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Advantages of Vacuum Zinc Infiltration Compared to Hot-Dip Galvanizing
Vacuum zinc infiltration is an advanced corrosion protection technology for steel components, representing a new trend in the development of steel surface treatment methods.The traditional electro-galvanizing process generally follows the steps: surface cleaning → acid pickling → galvanizing → passivation → drying → finished product. During acid pickling and passivation, wastewater containing harmful substances is generated, requiring complex wastewater treatment. Moreover, the use of chromium-based passivation introduces chromium ions—harmful to both human health and the environment—into wastewater and even onto the surface of the finished product.Vacuum zinc infiltration, on the other hand, is a clean and environmentally friendly process. It is a thermochemical treatment performed in the ferrite state, using zinc powder as the raw material. Inside a rotating, sealed container under vacuum conditions, heated steel components are brought into contact with zinc powder, allowing zinc ato
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Vacuum Zinc
