磨削液参数对磨削强化表面微结构损伤的影响

针对磨削强化过程中磨削液对磨削力和磨削温度场的影响,建立非调质45钢的磨削强化过程的仿真模型,分析不同磨削液参数对工件表面温度场及加工后残余应力的影响.最后,选择不同磨削液参数对45钢工件进行平面磨削强化试验,研究加工后工件表面硬度值及其表面完整性参数.试验结果表明,工件表面微结构损伤与磨削深度有密切的联系,在磨削过程中加入一定量的磨削液能有效降低表面微结构损伤,但削弱了在工件表面上由磨削热产生的强化能力.

Effect of Grinding Fluid Parameters on Microstructure Damage of Grinding Hardening Surface

Aiming at the grinding fluids influence on grinding forces and grinding temperature field in the grinding hardening process， a simulation model of non-quenched and tempered 45 steel was established to analyze the influence of different grinding fluid parameters on the grinding workpiece surface hardness and residual stress. At last， the workpiece surface hardness and its surface integrity after plane grinding hardening experiment by changing the grinding fluid parameters were studied. The results showed that the surface microstructure damage has a closest connection to the grinding depth. Adding a certain amount of grinding fluid can effectively reduce the surface microstructure damage， but it seriously weakens the effect of using grinding heat to strengthen the workpiece surface.