专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4102679A Powder metallurgic manufacturing process 失效
标题翻译：粉末冶金制造工艺
公开(公告)号：US4102679A
公开(公告)日：1978-07-25
申请号：US747925
申请日：1976-12-06
申请人： Aukusti Arvela
发明人： Aukusti Arvela
IPC分类号： B22F3/105 , B22F3/14 , H05B3/60
CPC分类号： B22F3/14
摘要： An improvement in a powder metallurgic manufacturing process where metal powder is compressed and heated in a mould and heat is produced by conducting electric current through the mould and the metal powder as well as through at least one electrically resistive fireproof body in actual contact with the mould where heat produced in the body is transferred to the mould and the metal powder. The improvement comprises maintaining electric tension between 2 and 200 volts; the current efficiency per unit volume of the mould between 20 and 200 W/cm.sup.3 ; and the resistivity of the electrically resistive fireproof body between 0.03 and 100 ohm .times. cm.
摘要翻译：在金属粉末在模具中加热和加热的粉末冶金制造工艺的改进是通过将电流通过模具和金属粉末以及通过与模具实际接触的至少一个电阻式耐火体而产生的其中在体内产生的热量转移到模具和金属粉末。改进之处在于保持2和200伏之间的电张力; 目前每单位体积的模具效率在20和200W / cm3之间; 电阻耐火材料的电阻率在0.03和100欧姆x厘米之间。

IPRDB