摘要
对铁素体球铁在低温下 (- 2 0℃ )的冲击韧性进行了研究 结果表明 ,降低C ,Si,Mn含量 ,严格控制S ,P含量及适当热处理工艺 ,能够保证其低温下 (- 2 0℃ )的冲击韧性达到 12J;
The impact toughness of ferrite nodular iron was studied It can be guarantee that impact toughness is more then 12 J,under low temperature (-20℃),which is necessary for the castuse,by means of decreaseing the C,Si and Mn content,by controling stictly the S,P content and by sutiable heat treatment technique
