Transactions of Materials and Heat Treatment

Title：Study on superplastic forming and superplastic welding of drill bit

Authors： Luoyang Institute of Technology Yang Yongshun Wen Jiuba Chen Fuxiao

Unit：

KeyWords： Cr steel Drill bit Superplasticity Extrusion Welding

ClassificationCode：TG376

year,vol(issue):pagenumber：2001,26(2):34-37

Abstract：

The complex drill bit parts are produced by adopting the compound technology of superplastic forming and superplastic welding. The productivity increases 41% and the utilization ratio of materials increases 34 8% The qualily of the parts improves further

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