工装架对消失模铸造高铬铸铁衬铁冷隔缺陷的影响  

Influence of the Assembly Jig on Cold Lap Flaw of High Chromium Cast Iron Liner by EPC Process

作　　者：贺国强[1] 梁冰利[1] 

机构地区：[1]金堆城钼业集团有限公司机电修配厂,陕西华县714102

出　　处：《铸造》2016年第7期630-631,共2页Foundry

摘　　要：针对高铬铸铁衬铁在生产过程中出现冷隔缺陷或浇不足缺陷的问题,对比分析了在工装架与横浇道之间未垫耐火砖和垫耐火砖两种工艺对冷隔缺陷或浇不足缺陷的影响。结果表明,在工装架与横浇道之间垫耐火砖工艺减缓充型铁液的降温速度,充型铁液的流动性较好,优于未垫耐火砖工艺。对于碳化物呈(Cr,Fe)7C3型的高铬铸铁衬铁而言,采用垫耐火砖工艺生产,可以消除衬铁的冷隔缺陷或浇不足缺陷。For the cold lap flaw or the poured short flaw during the production of the high chromium cast iron liner, the effects of two casting processes with and without the refractory brick between the assembly jig and the runner on the cold lap flaw or the poured short flaw were analyzed. The results indicate that cooling rate of the filling iron melt decreased and the iron melt had good fluid in the process with the refractory brick, which are better than the process without the refractory brick. For high chromium cast iron liner that carbide is （Cr, Fe）TC3, by using the process with the refractory brick production, the cold lap flaws or the poured short flaws of liner can be eliminated.

关 键 词：工装架 消失模铸造 高铬铸铁 冷隔 

分 类 号：TG249.6[金属学及工艺—铸造]