W-Mo-V改进型H13模具钢的力学性能与磨损行为

Mechanical properties and wear behavior of W-Mo-V modified H13 tool steel

研究了自主研发的W-Mo-V系改进型H13模具钢(HBJ3钢)经500、550和600℃回火后的显微组织、力学性能和磨损行为,并与H13钢进行了对比。结果表明,与H13钢相比,HBJ3钢经600℃回火后的硬度和抗拉强度均有明显提高。在回火温度为500、550和600℃时,HBJ3钢的摩擦因数和磨损率均低于H13钢,磨损率分别低38%、58%和64%。HBJ3钢的磨损机理主要是氧化磨损和磨料磨损,而H13钢还有剥层磨损机制。

Microstructure,mechanical properties and wear behavior of an independently developed W-Mo-V modified H13 die steel(indicated as HBJ3 steel)after tempering at 500,550 and 600℃were studied and compared with H13 steel.The results show that the hardness and tensile strength of the HBJ3 steel after tempering at 600℃are obviously increased compared with that of the H13 steel.After tempered at 500,550 and 600℃,the friction coefficient and wear rate of the HBJ3 steel are all lower than those of the H13 steel,in which the wear rate is decreased by 38%,58%and 64%,respectively.The wear mechanism of the HBJ3 steel is mainly oxidation wear and abrasive wear,while the H13 steel also has the mechanism of peeling wear.