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US4221832A Surface treatment of metal strip 失效
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Surface treatment of metal strip
摘要:
Metal strip, particularly steel strip, is heated above 300.degree. C. and immersed in a coating bath whose temperature is at least 80.degree. C. and which contains at least one metal salt, the strip being coated with a metal layer, e.g. Ni-based or Cr-based, by the coating bath.
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