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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Hitachi Ltd
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Hitachi Ltd
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Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP5433877ApriorityCriticalpatent/JPS53140244A/en
Publication of JPS53140244ApublicationCriticalpatent/JPS53140244A/en
Publication of JPS619369B2publicationCriticalpatent/JPS619369B2/ja
PURPOSE: To prevent the occurence of stress relief annealing (SR) cracking in the vicinity of the weld zone of a high hardness steel material by heat treating the weld zone and its periphery to lower the hardness prior to welding.
COPYRIGHT: (C)1978,JPO&Japio
JP5433877A1977-05-131977-05-13Welding method for steel material
GrantedJPS53140244A
(en)