发明名称 |
METHOD FOR THE THERMOMECHANICAL TREATMENT OF STEEL |
摘要 |
The invention relates to a method for the thermomechanical treatment of steel. According to said method, the parent material is heated to a temperature in excess of the re-crystallisation temperature, the structure is austenitised, held at an equalised temperature and then formed and subsequently quenched to form martensite and tempered. Round steel bars, whose re-crystallisation temperature is adjusted over the bar length in a compensation furnace, constitute the parent material. The round steel bars are subsequently re-modelled by cross-rolling, remaining substantially straight and after the critical deformation degree has been exceeded are subjected to dynamic re-crystallisation processes. The round steel bars are then subjected to a post-heating process above the Ac3 temperature, in order to undergo a complete static re-crystallisation and finally are quenched from the austenitic state to form martensite and tempered.
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申请公布号 |
CA2519509(C) |
申请公布日期 |
2011.09.20 |
申请号 |
CA20042519509 |
申请日期 |
2004.03.05 |
申请人 |
THYSSENKRUPP AUTOMOTIVE AG |
发明人 |
VONDRACEK, HANS;DZIEMBALLA, HANS;MANKE, LUTZ;BOROWIKOW, ALEXANDER;UHRICH, REINHARD;HUETTNER, MATTHIAS |
分类号 |
C21D8/00;C21D1/18;C21D1/42;C21D8/06;C21D9/02 |
主分类号 |
C21D8/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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