喂线球化生产薄壁球铁排气管研究与应用

Research and application of thin wall exhaust pipe of ductile iron spheroidized by feeding alloy cored wire

张寿涛

哈尔滨东安动力股份有限公司

摘　要: 采用高镁合金包芯线进行喂线球化生产薄壁球铁件,经试验确定了芯线加入量、喂线速度、浇注时间有关工艺参数,最佳芯线加入量为每600kg铁水加入10-12m高镁合金包芯线;最佳喂线速度为12m/min;每包浇注时间小于8min。通过对喂线法球化处理在工艺优化控制,提高了排气管类薄壁球铁件的质量,合格率达到了90%以上。通过优化工艺参数后,质量有较大的提高,综合质量水平均达到90%以上。
关键词: 薄壁球铁排气管；高镁合金包芯线；汽车发动机
分类号: U466；U464
出　处: 《冶金与材料》2014年第5期，第 54-62 页（共 9 页）
出版日期: 2014-10-15
知网数据: 下载 73 次，被引 4 次（截至 2026-09-29）

Abstract: Using high magnesium alloy cored wire to wire to produce thin wall ductile iron,the technological parameters were determined,such as,the core content,the feed speed,and the pouring time.best cored wire injection is 10- 12 m magnesium alloy cored wire per 600 kg molten iron,the best feeding line speed is 12 m / min,and best casting time is less than 8min. By means of feeding alloy cored wire spheroidization control in the process is optimized,so as to improve the quality of ductile iron thin exhaust pipe with the qualified rate of more than 90%. Through the optimization of the process parameters,the quality is improved with the comprehensive quality level reached more than90%.
Keywords: thin wall ductile iron exhaust pipe; high magnesium alloy cored wire; automobile engine

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