热处理工艺对W3Mo4Cr5V6钢耐冲击磨粒磨损性能的影响  

Effect of heat treatment on impact abrasive wear resistance of W3Mo4Cr5V6 steel

作　　者：赵峥嵘 曹玉龙 樊明强 张雲飞 赵英利 Zhao Zhengrong;Cao Yulong;Fan Mingqiang;Zhang Yunfei;Zhao Yingli(Material Technology Research Institute of HBIS Group,Shijiazhuang Hebei 052165,China;The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology,Wuhan Hubei 430081,China)

机构地区：[1]河钢材料技术研究院,河北石家庄052165 [2]武汉科技大学省部共建耐火材料与冶金国家重点实验室,湖北武汉430081

出　　处：《金属热处理》2024年第12期33-39,共7页Heat Treatment of Metals

基　　金：国家自然科学基金(52004188)。

摘　　要：采用MLD10磨粒磨损试验机和VL2000DX-SVF17SP型激光共聚焦显微镜研究了热处理工艺对W3Mo4Cr5V6钢经磨粒磨损后性能及粗糙度的影响。对比分析了不同热处理工艺条件下W3Mo4Cr5V6钢的磨损质量损失率、表面磨损形貌及粗糙度变化情况。结果表明,经不同热处理后W3Mo4Cr5V6钢的耐磨性较铸态有明显提高,相同试验条件下磨损质量损失量较铸态减少17~24.9 mg, 1100℃×1 h淬火+550℃×2 h回火试样的磨损质量损失较少且硬度均匀性较好,耐磨性优异。随着磨损时间的增加,不同试样表面粗糙度均逐渐减小,其中1100℃×1 h淬火+550℃×2 h回火试样从Ra=9.30μm减小到Ra=7.60μm,且不同视场间粗糙度数值较稳定。试样在磨损过程中的质量损失主要是由磨料犁削、脆性断裂、疲劳脱落所引起。Effect of heat treatment process on the properties and roughness of the W3Mo4Cr5V6 steel after abrasive wear was studied by means of MLD10 abrasive wear tester and VL2000DX-SVF17SP laser confocal microscope. The wear mass loss rate, surface wear morphology and roughness changes under different heat treatment conditions were compared and analyzed. The results show that the wear resistance of the W3Mo4Cr5V6 steel after different heat treatments is significantly improved compared with that of the as-cast steel. Under the same test condition, the wear mass loss after heat treatment is 17-24.9 mg less than that of the as-cast. After quenching at 1100 ℃ for 1 h and tempering at 550 ℃ for 2 h, the wear mass loss of the specimen is less, the hardness uniformity is better and the wear resistance is excellent. With the increase of wear time, the surface roughness of different specimens decreases gradually. Among them, that of the specimen quenched at 1100 ℃ for 1 h and tempered at 550 ℃ for 2 h decreases from Ra=9.30 μm to Ra=7.60 μm, and the roughness value between different fields of view is stable. The mass loss of the specimens during the wear process is mainly caused by abrasive ploughing, brittle fracture and fatigue shedding.

关 键 词：高速钢 热处理 磨粒磨损 粗糙度 

分 类 号：TG115.58[金属学及工艺—物理冶金] TG156.31[金属学及工艺—金属学]