发明名称 |
Process for welding cast iron |
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 mm2, 280-300 ferrite grains per mm2 and a spherulite proportion of about at least 95% by weight of the graphite precipitations.
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申请公布号 |
US4793542(A) |
申请公布日期 |
1988.12.27 |
申请号 |
US19870138050 |
申请日期 |
1987.12.28 |
申请人 |
WALTER HUNDHAUSEN GMBH & CO. KG;KUKA SCHWEISSANLANGEN+ROBOTER GMBH |
发明人 |
FARRENKOPF, WOLFGANG;GRUENAUER, HEINRICH;MENZINGER, MANFRED;VON HIRSCH, JOACHIM;OPITZ, REINHARD |
分类号 |
B23K20/12;(IPC1-7):B23K20/12 |
主分类号 |
B23K20/12 |
代理机构 |
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