摘要
热作模具的使用寿命决定于它的硬度即耐磨性能,而模具的耐磨性能又与模具钢的抗回火性能有关,模具钢抗回火性能越好,其耐磨性能越高。研究表明,添加适量的合金元素Mo和W能提高热作模具钢的抗回火性能,即提高模具淬火和高温回火后的硬度。例如,含1.5%~2.5%Mo和1.5%~2.5%W的DM热作模具钢1 030~1050℃淬火后于650℃回火24 h后的硬度达33 HRC,比H13钢高7HRC,比3Cr2W8V钢高3 HRC。
Service life of hot-work die is dependent on its hardness, i.e., its wear resistance, whereas the wear resistance of the die is related to tempering resistance of the steel from which the die is. From the experimental investigation it was discovered that the tempering resistance of hot-work die steel may be improved by the addition of a moderate amount of alloying elements such as both molybdenum and tungsten. For example, after being quenched from 1 030 to 1 050 ℃ and then tempered at 650 ℃ for 24 h DM hot-work die steel containing 1.5% to 2.5% Mo and 1.5% to 2.5% W exhibited as high hardness as 33 HRC which is 7 HRC higher than that of H13 steel and 3 HRC higher than that of 3Cr2WSV steel.
出处
《热处理》
CAS
2018年第1期21-23,共3页
Heat Treatment
关键词
热作模具钢
抗回火性能
耐磨性能
钼
钨
hot- work die steel
resistance tempering
wear resistance
molybdenum
tungsten
