Tungsten Carbide Cutting Tools Chip Formation

When tungsten carbide cutting tools are employed in machining operation, the entire process of chip formation comprises primary shear, secondary shear and fracture process.

The primary shear of chip formation process is also referred to the workpiece material’s plastic deformation, which is severe and could be found in front of the cutting edge where the chip body is  delineated from a large amount of workpiece material. For the secondary shear, the chip slides over the rack face of the tungsten carbide tool. In the final separation stage, a fracture process takes over.

It is shown that the relative ease of the chip formation process is determined by the workpiece material’s flow properties. In addition, besides the existing conditions, the varied chips’ size and shapes are also under the control of factors like workpiece ductility, inclusion characteristics and etc..


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