公开(公告)号：US4793542A

公开(公告)日：1988-12-27

申请号：US138050

申请日：1987-12-28

申请人： Wolfgang Farrenkopf ,  Heinrich Gruenauer ,  Manfred Menzinger ,  Joachim von Hirsch ,  Reinhard Opitz

发明人： Wolfgang Farrenkopf ,  Heinrich Gruenauer ,  Manfred Menzinger ,  Joachim von Hirsch ,  Reinhard Opitz

IPC分类号： B23K20/12

CPC分类号： B23K20/129 ,  B23K2203/04 ,  B23K2203/06 ,  B23K2203/18

摘要： An improved friction-welding process for effecting a joint between steel and nodular graphite-containing cast iron by using (i) a short friction-generating time so as to minimize diffusion of carbon into steel and (ii) an elevated forging pressure so as to effect a quantitative ejection of carburized melt but avoid formation of a weld laminate, is provided, as well as a nodular graphite-containing cast iron of grade 40.3 S, suitable for use in friction-welding and comprising about 280-320 graphite nodules per mm.sup.2, 280-300 ferrite grains per mm.sup.2 and a spherulite proportion of about at least 95% by weight of the graphite precipitations.

摘要翻译： 一种改进的摩擦焊接方法，用于通过使用（i）短的摩擦产生时间来实现钢和含节结构的含石墨的铸铁之间的接合，以使碳的扩散最小化到钢中，和（ii）升高的锻造压力，以便 实现渗碳熔体的定量喷射，但避免形成焊接层压板，以及适用于摩擦焊接的含有40.3 S的球墨铸铁，其包含约280-320个石墨结核/ mm2 ，280-300铁素体颗粒/ mm 2，球晶比例约为石墨沉淀物重量的至少95％。