Analysis on Regularity of Fatigue Crack of Heavy Carbide Insert Under Dynamic Alternating Loading

Li Liu; Yao Nan Cheng; Jun Qian; Ya Nan Gong; Ming Yang Wu; Fu Gang Yan

doi:10.4028/www.scientific.net/KEM.589-590.58

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 589-590Analysis on Regularity of Fatigue Crack of Heavy...

Analysis on Regularity of Fatigue Crack of Heavy Carbide Insert Under Dynamic Alternating Loading

Abstract:

In the machining process of large parts, the dynamic alternating loading suffered by heavy carbide insert is very large, so the fatigue failure of the insert is serious. Through the analysis the effect of dynamic alternating force - thermal load on insert’s crack, and the fatigue crack experiment of inserts under dynamic alternating loading will be done, the formation conditions and distribution law of fatigue cracks can be researched under the effect of dynamic mechanical shock and thermal shock. And the fatigue crack will be theoretical analysis through the fatigue curve in the range of test cutting parameters. It can provide effective basis for the optimizing the heavy-duty cutting parameters and reducing the fatigue crack failure of heavy-duty cutting insert.