Invention Grant
- Patent Title: Plastically deformed hardened steel parts and method of forming same
- Patent Title (中): 塑性变形硬化钢件及其形成方法
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Application No.: US41824973Application Date: 1973-11-23
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Publication No.: US3865638APublication Date: 1975-02-11
- Inventor: BALLANTYNE DAVID B , MANTEL EDWARD R , ROBINSON GEORGE H
- Applicant: GEN MOTORS CORP
- Assignee: Motors Liquidation Co
- Current Assignee: Motors Liquidation Co
- Priority: US41824973 1973-11-23
- Main IPC: C21D3/04
- IPC: C21D3/04 ; C21D9/46
Abstract:
Articles are made by plastically deforming hardened steel sheet stock having relatively deep ferrite outer surface zones and a through hardened central core with an abrupt transition between the ferrite surface zones and the central core. Plastically deformed steel articles such as steel rule dies and automobile door guard beams made from such stock are described.
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