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
Key words
high speed steel/heat treatment/abrasive wear/roughness
维普
万方数据