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Fundamentals of Automotive Steel Sheets - Anti-Rust Steel Sheets
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Anti-Rust Steel Sheets |
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In order to increase corrosion resistance, some steel sheets are electro-plated with zinc, tin or aluminum on their surfaces. Zinc-plated steel sheets have the highest corrosion resistance, this type is the most widely used for automotive component parts requiring this protection. Some of the well-known zinc-plated steel sheets are an electro-zinc plated steel sheet, molten zinc plated steel sheet, and alloyed molten zinc plated steel sheet. |
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Electro Zinc Plated Steel Sheet:
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Corrosion resistant steel sheet with high purity zinc deposited on the sheet surface through electric plating process. Though its zinc-plated thickness is thinner than that of the molten plated steel sheet, the surface condition is even. Therefore it is superior in workability, welding and painting processes. But, it is inferior to the molten zinc plated steel sheet in corrosion protection as it cannot be thick-plated.
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Molten Zinc Plated Steel Sheet (Dipping Method):
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Corrosion resistant steel sheet is covered with molten zinc plating by immersing it. Although it is superior in corrosion protection performance as the plating layer is thick, is inferior to the electro-zinc plated steel sheet in welding and painting.
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Alloyed Molten Zinc Plated Steel Sheet:
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In order to compensate for imperfections of electro-zinc plated and molten zinc plated steel sheets, alloys of iron and zinc or nickel and zinc are plated on the surface to improve ease of welding and painting.
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