Cracking Reason of Round Diamond Saw-blade

BA Fa-hai. Cracking Reason of Round Diamond Saw-blade[J]. Materials and Mechanical Engineering, 2008, 32(8): 76-78.

Citation:

BA Fa-hai. Cracking Reason of Round Diamond Saw-blade[J]. Materials and Mechanical Engineering, 2008, 32(8): 76-78.

Citation:

BA Fa-hai. Cracking Reason of Round Diamond Saw-blade[J]. Materials and Mechanical Engineering, 2008, 32(8): 76-78.

Abstract

The surface cracks of mounting hole of  1.65 m round diamond saw-blade were found after working for three days.The cracking reason were analyzed using optical microscope(OM),scanning electronic microscope(SEM),chemical compositions analysis and mechanical properties test,etc.The results showed that,the cracks were propagated on the surface of the saw blade.And the main fracture feature was intergranular.A layer of 150 μm needle-shape martensited zone with hardness of 51.5 HRC existed at the cracking source.It is the improperly grinding technology that resulted in the surface cracks.

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