Grinding technology of tungsten carbide (WC) wear-resistant coating by supersonic flame spraying

       The WC type wear-resistant coating sprayed by supersonic flame has high coating hardness, which can reach HV1000 or more. The recommended grinding process is as follows:



1) Using precise and high-quality grinding equipment.



2) Use water-soluble cooling medium for rinsing.



3) Use resin-bonded diamond grinding wheel. When the outer diameter of the workpiece is less than 50mm, choose a grinding wheel with a diameter of 500mm; when the outer diameter of the workpiece is greater than 50m, choose a wheel with a diameter of 762mm.



4) Grinding using a two-step method. The second step: rough grinding, the grinding parameters are: abrasive grain size 125~150 mesh, grinding wheel speed 25-30m/s; workpiece speed 0.3m/s; grinding depth <0.001mm; moving speed 0.2~0.3m /min, the longitudinal feed grinding amount is 0.025 ~ 0.05mm; the second step: fine grinding, the grinding parameters are: abrasive particle size 380 ~ 400 mesh, grinding wheel speed 25 ~ 30m/s; workpiece speed 0.5m/, grinding Depth <0.05mm, moving speed 0.05 ~ 0. 1m/s, longitudinal grinding amount 0.025 ~ 0.05mm.