Invention Grant
- Patent Title: Method for shaping from a blank of a hardening material with differential cooling
- Patent Title (中): 用不同冷却从硬化材料坯料成型的方法
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Application No.: US12933874Application Date: 2009-02-26
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Publication No.: US08646302B2Publication Date: 2014-02-11
- Inventor: Jean Jacques Lety , Stéphane Anquetil , Laurent Barromes , Sophie Sebrier
- Applicant: Jean Jacques Lety , Stéphane Anquetil , Laurent Barromes , Sophie Sebrier
- Applicant Address: FR Le Theil
- Assignee: Thyssenkrupp Sofedit
- Current Assignee: Thyssenkrupp Sofedit
- Current Assignee Address: FR Le Theil
- Agency: Blakely Sokoloff Taylor & Zafman
- Priority: FR0851201 20080226
- International Application: PCT/EP2009/052289 WO 20090226
- International Announcement: WO2009/106571 WO 20090903
- Main IPC: B21D37/16
- IPC: B21D37/16

Abstract:
The invention relates to a drawing tool (1) for shaping and cooling a steel part from a blank (6), said tool including: at least one punch (2); and at least one matrix (3); the punch and the matrix each including: at least a first portion (21, 31) corresponding to a hot area (11) of the drawing tool; and at least a second portion (22, 32) corresponding to a cold area (12) of the drawing tool; in the cold area, the second part of the punch and the second part of the matrix are brought into contact with the blank when the drawing tool is closed; characterized in that, in the hot area of the drawing tool, a heating means are provided for heating said hot area to a temperature higher than about 400° C., and in that, in said hot area, a distance (L) on top of the blank thickness (e) is provided between the punch and the matrix when the drawing tool is closed, is related to the temperature (T) of the hot area, and is given by the formula T=100·(6−L), with L>0.2 and 400≦T
Public/Granted literature
- US20110030442A1 METHOD FOR SHAPING FROM A BLANK OF A HARDENING MATERIAL WITH DIFFERENTIAL COOLING Public/Granted day:2011-02-10
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