Impact Damage Behavior of the Cemented Carbide Insert in the Heavy Cutting Process

doi:10.3901/JME.2014.23.175

Abstract

Abstract: Impact fracture process of cemented carbide turning tool is analyzed by using mechanics impact theory and the critical condition is also determined when the impact fracture happened. Finite element simulation is used to analyze and research production mechanism and damage form of impact fracture of cemented carbide turning tool, and through impact experiment the impact fracture rules of cemented carbide turning tool is revealed. The fatigue behavior of cemented carbide turning tool is researched, and through finite element simulation, production mechanism of fatigue fracture of cemented carbide under dynamic load is put forward, and the load condition of fatigue fracture of cemented carbide is given. Through intermittent cutting experiment, the essential reason why cemented carbide produced fatigue behavior is analyzed. All above will provide theory support and reference to prevent cemented carbide tool from failure too early.

Key words: carbide turning tool, cracks, fatigue fracture, heavy cutting, impact fracture

CLC Number:

TG712

LIU Xianli;LIU Ming;HE Genghuang;YAN Fugang;CHENG Yaonan;LIU Li. Impact Damage Behavior of the Cemented Carbide Insert in the Heavy Cutting Process[J]. , 2014, 50(23): 175-185.

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Impact Damage Behavior of the Cemented Carbide Insert in the Heavy Cutting Process

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