摘要
研究了20种热处理工艺对高钒高速钢的硬度、冲击韧性、残余奥氏体量与滚动磨损性能的影响,并利用SEM对其显微组织进行了分析,筛选出了适合滚动磨损的热处理工艺。研究结果表明:淬火温度升高,其残余奥氏体量升高;回火温度升高,其残余奥氏体量减少。淬火温度为900～1 000℃时,回火温度对耐磨性的影响不大;1 050～1 100℃淬火,450～550℃回火时,滚动磨损性能大幅度提高。以滚动耐磨性为评价指标,综合考虑热处理工艺对力学性能、滚动耐磨性、设备损耗及生产成本的影响,最适宜的热处理工艺为:淬火加热温度1 050℃,回火温度450～550℃。
The effects of 20 types of heat treatment process on hardness, impact toughness, retained austenite amounts and rolling wear resistance of high vanadium high speed steel were studied, and their microstructures were analyzed by SEM, optimal heat treatment technology for rolling wear was acquired. The results show that, when the quenching temperature increases, retained austenite amounts increase. When tempering temperature increases, retained austenite amounts decrease. Quenching at 900-1 000 ℃, the effects of tempering temperature on rolling wear properties are little. At the quenching temperature of 1 050-1 100 ℃ and tempering temperature of 450-550 ℃, rolling wear properties increase at a great extent. Considering the effects on its mechanical properties, rolling wear resistance, equipment loss and production costs, optimal heat treatment technology is quenching at 1 050 ℃ and tempering at 450-550 ℃.
出处
《铸造》
EI
CAS
CSCD
北大核心
2007年第9期970-974,共5页
Foundry
基金
河南省重大科技攻关项目(0322020300)。
关键词
高钒高速钢
热处理
显微组织
滚动磨损性能
硬度
冲击韧性
high vanadium high speed steel
heat treatment
microstructure
rolling wear properties
hardness
impact toughness
