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FE-NI ALLOY OR FE-NI-CO ALLOY HAVING SUPERIOR HEAT RESISTANCE IN NOBLE METAL PLATING
FE-NI ALLOY OR FE-NI-CO ALLOY HAVING SUPERIOR HEAT RESISTANCE IN NOBLE METAL PLATING
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机译:FE-NI合金或FE-NI-CO合金在贵金属镀层中具有出色的耐热性
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摘要
PURPOSE:To improve the heat resistance of an Fe-Ni or Fe-Ni-Co alloy during noble metal plating by regulating the work degenerated surface layer of the alloy to a thin layer of a specified thickness. CONSTITUTION:An Fe-Ni or Fe-Ni-Co alloy ingot is hot rolled, cold rolled and subjected to cold rolling including annealing. The thickness of the work degenerated surface layer is regulated to =5mum by selecting conditions during the final cold rolling and the kind of lubricating oil used. When the alloy is plated with a noble metal at a high temp., the resulting plating does not tarnish because the alloy has superior heat resistance.
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