Invention Grant
- Patent Title: Hybrid method manufacturing apparatus for torsion beam
- Patent Title (中): 用于扭转梁的混合方法制造装置
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Application No.: US12850017Application Date: 2010-08-04
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Publication No.: US08404176B2Publication Date: 2013-03-26
- Inventor: Byungju Kim , Sangmyung Kim , Sanggil Jang , Cheolhwan Cho
- Applicant: Byungju Kim , Sangmyung Kim , Sanggil Jang , Cheolhwan Cho
- Applicant Address: KR Ulsan
- Assignee: Donghee Industrial Co., Ltd.
- Current Assignee: Donghee Industrial Co., Ltd.
- Current Assignee Address: KR Ulsan
- Agency: LRK Patent Law Firm
- Priority: KR10-2009-0073735 20090811
- Main IPC: C21D8/00
- IPC: C21D8/00

Abstract:
A hybrid method manufacturing apparatus for a torsion beam according to an exemplary embodiment of the present invention includes a pair of side punch molds where a semi-finished product material heated to approximately 880 to 800° C. is molded and a press mold where a cooling water circulation line decreasing the temperature of the processed finished product to approximately 750 to 450° C. while the semi-finished product material is molded to a processed finished product is installed, an advantage of high-temperature molding having high dimensional accuracy is maintained at the time of manufacturing the torsion beam and additional heat treatment such as tempering is selectively performed only when additional heat treatment such as tempering increases toughness because only a martensite structure is not formed in quenching treatment.
Public/Granted literature
- US20110037207A1 HYBRID METHOD MANUFACTURING APPARATUS FOR TORSION BEAM Public/Granted day:2011-02-17
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