Study on Surface Modification Technology of Mechanical Steel Gasket

The surface modification of mechanical gasket made of 1Cr5MoVSr steel was carried out using laser-cladding technique with varying laser power,spot diameter and scanning speed.Its wear resistance and impact resistance performances were tested and analyzed. The results show that with increasing the laser power from 1 k W to 5 k W,increasing the spot diameter from 1 mm to 3 mm,and increasing the scanning speed from 2 mm/s to 8 mm/s,its wear resistance and impact resistance performances show the tendency of increasing firstly and then decreasing.In order to make suitable mechanical 1Cr5MoVSr steel gasket,the laser power,the spot diameter,and the scanning speed are preferably 3 k W,2 mm,and 6 mm/s,respectively.