高磷闸瓦铁素体控制的探讨  

Study on Controlling Ferrite Proportion of High Phosphorus Brake-Shoe

作　　者：郗丽清[1,2] 刘恒亮[1,2] 

机构地区：[1]营口职业技术学院机械系,辽宁营口115000 [2]薛家配件厂,辽宁锦州12100

出　　处：《热加工工艺》2008年第1期90-92,共3页Hot Working Technology

摘　　要：研究了列车制动用高磷闸瓦铁素体含量的各种影响因素。结果表明,铁水出炉温度≥1350℃,用0.3%硅铁粒+0.2%锰铁粒+0.3%磷铁粒复合孕育效果最好;铁素体含量的合格率达到了90%,耐压检验和磷共晶偏析等不合格问题也得到了有效控制,显著的提高了产品质量。The various Influence factors for controlling ferrite content in the train high phosphorus brake-shoe were studied. The results show that the best quality will be achieved by controlling the casting temperature （≥ 1 350℃） and adding compound inoculant （0.3%Si-Fe ＋ 0.2%Mn-Fe ＋ 0.3%P-Fe）. The qualification rate of train brake-shoe reaches 90% by checking ferrite content, the found questions in the pressure test and phosphorus eutectic segregation test are controlled. The quality of train brake improves greatly.

关 键 词：高磷闸瓦 铁素体 复合孕育 孕育机理 

分 类 号：TG638[金属学及工艺—金属切削加工及机床]