我厂生产 S195柴油机 QT60—2曲轴,采用瞬时孕育工艺。原工艺是在铁水包上支架一个漏斗,浇注时,以粒度为6目的硅铁粉混入铁水进入浇口杯。从曲轴金相组织看,石墨圆整,球径较小,但由于操作麻烦,且硅铁粉加入会产生断流现象,加入量不易稳定。我们在采用过滤网技术基础上,研究了滤网前孕育工艺,获得了理想的孕育效果,在造型、熔炼等工艺不变的条件下,成功地浇注了曲轴,简化了浇注工艺。滤网前孕育工艺简图如下: I plant production S195 diesel QT60-2 crankshaft, using instant breeding process. The original process is a funnel on the ladle, pouring, the size of 6 mesh ferrosilicon mixed with molten iron into the gate cup. View from the microstructure of the crankshaft, graphite round, smaller diameter, but due to the operation of trouble, and the addition of ferrosilicon will produce a broken current, the amount is not easy to stabilize. Based on the filter technology, we studied the pre-filter inoculation process and obtained the ideal effect of inoculation, which successfully cast the crankshaft under the condition of constant molding, melting and other processes, and simplified the pouring process. Screen before breeding process diagram is as follows: