Excavating tool insert
2014
The cutting tool insert is provided. The disclosed cutting tool insert is a support substrate that extends in a first direction; And a cutting layer which is supported by the supporting substrate by bonding a surface of the supporting substrate, comprising the said one surface of the support substrate is formed with a raised ridge portion in the first direction. According to the invention, it has the advantage of reducing the residual stress generated in the polycrystalline diamond compact.
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