发明名称 Forming method for hollow metal tubes etc. has hydraulic pressure intensifier to heat and to form workpiece
摘要 A metal hollow profile component (2) is heated by the supply of a heated pressure medium (7) via a hydraulic pressure intensifier (91). The component is formed by the same pressure intensifier by increasing the pressure, and is cooled after forming by a coolant (7). The fluid medium remaining in the component after the end of the cycle is returned into the cylinder (77,40) of the pressure intensifier. Forming of the component takes place at a temperature of 200 deg C or more, pref. 300 deg C or more. The coolant is pumped into the component via a separate pressure intensifier (90). The component is flushed with an inter gas, pref. nitrogen at the beginning and/or the end of the cycle.
申请公布号 DE19956191(A1) 申请公布日期 2001.05.23
申请号 DE19991056191 申请日期 1999.11.22
申请人 BARTELS, HERMANN 发明人 BARTELS, HERMANN
分类号 B21D26/02;B21D26/041;F15B3/00;F15B15/14;F15B21/04;(IPC1-7):B21D26/02 主分类号 B21D26/02
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