Comparison of effects of shot blasting and slurry blasting on surface integrity of metal matrix
Taking Q235 hot rolled strip steel as the research object,the impact process of shot blasting and slurry blasting on the matrix surface was simulated by ANSYS/AUTODYN module,and the surface roughness and residual stress of strip steel were studied combining with shot blasting and slurry blasting impact tests.The results show that after shot blasting impact,the impact depth on the matrix surface and the impact diameter are 20％-49％and 9％-22％higher than that of the slurry blasting,respectively;the instantaneous temperature of the matrix surface of shot blasting impact is 247-413 ℃,and the instantaneous temperature of slurry blasting impact is 60-97 ℃,which shows that a large amount of impact heat energy can be carried away by the fluid in the slurry.The surface roughness and the surface residual stress of the matrix after shot blasting impact are 22％-37％and 3.7％-13.8％higher than that of the slurry blasting,respec-tively,the surface integrity of the matrix after slurry blasting impact is better than that after shot blasting impact.
万方数据
维普
