Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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Filing date
Publication date
Application filed by Nippon Steel CorpfiledCriticalNippon Steel Corp
Priority to JP50156902ApriorityCriticalpatent/JPS5918461B2/en
Publication of JPS5281010ApublicationCriticalpatent/JPS5281010A/en
Publication of JPS5918461B2publicationCriticalpatent/JPS5918461B2/en
PURPOSE:The decrease in hardness at central part of high speed steel wire of thin diameter made by usual method, in which drawing and heat treatment are repeated, is prevented by the improvement of cold drawing and heat treatment.