摘要
一、前言轧辊的质量往往被看作衡量一个国家重型机械水平的重要标志之一。为了提高冷轧辊的耐磨性与接触疲劳等使用性能,冷轧工作辊的热处理一直是重型机械行业不断研究和亟待解决的技术关键。为了满足愈益提高的质量要求,各国材料科学工作者近年来从各种途径进行试验探索:有的从以铸代锻的概念出发,以耐磨合金铸铁制作冷轧辊;有采用镍铬耐磨铸铁粉和高铬铸铁粉、通过热等静压粉末冶金工艺成型;有从改善冷轧辊用钢的冶金质量和研制新的轧辊用钢方面进行开拓;有从改革热处理工艺与创立新工艺方面作出尝试,其中包括:整体中频感应加热淬火、工频感应加热淬火、双频(50 Hz 和250 Hz)加热喷水淬火等感应加热新工艺,苏联学者发展了冷轧辊的高温形变淬火和等离子体加热淬火。我们最近发展贝氏体-马氏体复相热处理、
For the sake of seek out the optimum perfrmance of cold rollers,a study of
the Influence of lower bainite and martensite dual phase heat treatment on the microstructures
and mechanical properties of 9Cr_2Mo cold roller steel was investigated.The extperimental results
demonstrated that:185℃ isothermal 60min,by subsequently oil quenching or 165℃ isothermal 120
min then cooling,these two dual phase heat treatment technologies contribute the best compromise
of strengthening and tougheninq.The bending strength and impact toughness of the specimen will
have several times higher than that of the conventional quenching and low temperature temper
ones.The service life of the cold rollers affer such treatment will be expected to have much more
enhancement.
出处
《机械工程材料》
CAS
CSCD
1989年第5期33-37,共5页
Materials For Mechanical Engineering
