摘要
研究了锡元素在微合金灰铸铁中的行为,揭示了其影响铸件残余应力的机理。实验结果表明,含锡微合金灰铸铁不仅可以使铸件力学性能最佳,稳定在HT250水平以上,满足缸体生产的要求,而且通过配合采取其他工艺措施,还可以降低铸件残余应力,与HT250灰铸铁相比,降幅可达24．6％。
The behavior of trace tin in the gray iron was investigated, and the mechanism of the influence of tin on stress of castings was revealed. The experiment resuh showed that adding trace amount of tin could not only ensure the mechanical properties of castings to be kept higher than the level of HT250 grade, and also, by combining with some process measures, reduce the residual stress of castings by 24.6%, compared with non-alloyed gray iron.
出处
《现代铸铁》
CAS
2006年第3期40-42,共3页
Modern Cast Iron
基金
广西大学科研基金资助项目
合同编号:X022021
关键词
微合金灰铸铁
残余应力
缸体铸件
trace alloy-containing gray iron
residual stress
cylinder casting
