滚抛磨块材质对SLM成型316L表面滚磨光整效果影响的实验研究

hree types of rolling and polishing blocks, i.e., alumina, white ceramic, and brown corundum for rolling and polishing processing were selceted to investigate the effects of the texture of rolling and polishing blocks on the surface rolling and polishing of SLM formed 316L stainless steel. The effects of different rolling and polishing blocks on the surface roughness, material removal rate, microhardness, and phase composition of SLM formed 316L stainless steel in horizontal and vertical planes were studied. The results show that the processing efficiency of brown corundum grinding blocks is the highest, which can significantly reduce the surface roughness of the horizontal and vertical planes. The surface roughness value Ra decreases by 68.69% and 87.53%, respectively for the horizontal and the vertical planes. Moreover, improvement of the material removal rate and strengthening of the microhardness and residual compressive stress were also observed. In contrast, white ceramic grinding blocks effectively remove SLM forming defects while maintaining surface integrity, meeting special surface requirements. Furthermore, the processing effect of alumina grinding blocks is between the two.?????