公开(公告)号：US20130263637A1

公开(公告)日：2013-10-10

申请号：US13995009

申请日：2012-01-12

申请人： Takayuki Yamano ,  Jiro Iwaya ,  Takayuki Kimura ,  Tatsuya Asai ,  Naoki Mizuta

发明人： Takayuki Yamano ,  Jiro Iwaya ,  Takayuki Kimura ,  Tatsuya Asai ,  Naoki Mizuta

IPC分类号： B21D22/20

CPC分类号： B21D22/20 ,  B21D22/208 ,  B21D22/24 ,  C21D1/673 ,  C22C38/02 ,  C22C38/04

摘要： A press forming method forming an extended part by extension in a later forming period after deep drawing, the deep drawing process carried out with working at 100-250° C., and the extension forming process carried out colder at less than 50° C., whereby the extended part is formed by extension in a cup shaped low parts formed by deep drawing. Thus, press forming products containing formed elements can be deep drawing formed and extension formed at a high forming rate of 10 mm/sec or greater, which can assure high productivity. By making a steel plate temperature 100-350° C. during press forming and by making the forming rate in the later forming period where extension forming is carried out slower than the forming rate in an earlier forming period where extension forming is not carried out, cracking of the extended part can be prevented and press forming limitations can be improved.

摘要翻译： 冲压成型方法在深拉深后的后续形成期间延伸形成延伸部分，深加工在100-250℃下进行，延伸成形工艺在低于50℃进行冷 由此延伸部分通过在深冲形成的杯形低部分中延伸形成。 因此，含有成形元件的冲压成形品可以以10mm /秒以上的高成形速度形成深拉深而成形，可确保高生产率。 通过在压制成形期间使钢板的温度为100-350℃，并且通过使延迟成形的后期成形时间的成形速度比在不进行拉伸成形的较早成形时段内的成形速度慢， 能够防止延长部的龟裂，能够提高冲压成形的限制。