摘要
针对牵引电机用低温球墨铸铁件结构复杂,壁厚差别大,易产生缩孔和缩松缺陷,并要求铸件-40℃的低温冲击功大于12J的这些生产难点。以端盖铸件为例,分别从造型工艺、熔炼、原材料的选择、化学成分的控制、热处理工艺等方面介绍了生产低温球墨铸铁件的生产过程。经检验,铸件性能达到国外同类产品的质量要求,实现了国产化生产。
The low-temperature ductile iron casting used for traction motor features complex structure and large difference in wall thickness.The shrinkage and dispersed shrinkage defects easy occur during the production,and the casting is required to have a low temperature impact energy greater than 12 J at-40 ℃.Herein taking the end shield casting for example,the production procedure of low-temperature ductile iron casting was presented from aspects such as the molding process,smelting,selection of raw materials,chemical composition control,heat treatment,etc.The casting＇s performance arrives at the same level of the similar products abroad,and its localization production is realized.
出处
《铸造》
CAS
CSCD
北大核心
2011年第10期951-955,共5页
Foundry
关键词
铁素体球铁
低温冲击韧性
铸造工艺
ferrite ductile iron
low temperature impact value
foundry technology
