Excessive heat and mechanical load is the root of the plastic deformation. In the case of high speed and high feed, or processing of hard steel, machining hardened surface and high-temperature alloys, inserts tend to generate a lot of heat.

Excessive heat will cause softened binding agent or cobalt. When a cutting edge (tungsten glass cutter wheel)appears to have developed a large wear land after a very short time, and the finished parts can not meet the standard, plastic deformation should be suspected.

By the following methods to control the plastic deformation: the rational use of coolant, use less binder content and more wear-resistant grade material, lower processing speed and feed rate, and use groove with reduced cutting forces(tungsten carbide tile cutter tool).

 

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