Effect of Sandblasting on Surface Condition and Performance of Coated Cermet Inserts
The coated cermet inserts have the advantages of excellent wear resistance,heat resistance and chemical stability,and their wear resistance is affected by the surface properties and stress state after coating.In this paper,CVD coa-ted cermet inserts are post-treated with different sandblasting pressure,and the influence of sandblasting process on the sur-face properties and wear resistance of coated cermet inserts is investigated.The results show that the surface of coated cer-met inserts has different degrees of erosion wear,and the surface roughness of the coated cermet inserts after sandblasting treatment is gradually reduced,the residual stress on the surface is transformed from tensile to compressive,the surface hardness is improved,and the wear resistance of the tool is also greatly improved.
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