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针对奥氏体不锈钢成形过程中的摩擦磨损问题,设计了一种耦合变形摩擦的试验方法,在实验中分析了耦合摩擦试验中钢带滑动速度对钢板与压头间的摩擦系数的影响。通过对磨损表面进行观察,以及LS-DYNA仿真对应力的分析发现:滑动速度的增加引起了剪切应力的增加,钢带试样的马氏体组织转变量随着其滑动速度的增加而增加,并引起摩擦表层马氏体组织磨粒磨损,表面磨损现象加重,且摩擦系数波动减小。
Aiming at the problem of friction and wear in the process of forming austenitic stainless steel, a test method of coupled deformation friction is designed. The influence of the sliding speed of steel strip on the friction coefficient between steel plate and indenter is analyzed in the experiment. By observing the worn surface and analyzing the stress of the LS-DYNA simulation, it is found that the increase of the sliding velocity leads to the increase of the shear stress, and the martensitic transformation of the strip specimen increases with the increase of the sliding velocity , And caused abrasion of surface martensite abrasive grains on the friction surface, which aggravated the phenomenon of surface abrasion and reduced the fluctuation of friction coefficient.