Method for the Pre-treatment of steel parts prior to salt bath nitriding
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United States of America Patent
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Apr 7, 1998
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app pub date -
Nov 28, 1995
filing date -
Nov 29, 1994
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Abstract
Flawless nitrating layers are obtained during the nitro-carburizing of components made from steels which form passive layers in salt baths if these components are first pre-treated in an oxidizing salt melt at 300.degree. to 500.degree. C. prior to the nitro-carburizing process.
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