鍛造金型寿命の解析

概要

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Recently, CAE analyses have been commonly applied to many forging die longevity problems. The typical die life patterns are fracture and wear. The type, "fracture or wear?", is easily identified by using Weibull analysis, one of reliability analysis methods. The review introduces the CAE application examples for both of forging die fracture and wear problems. The first example is stress analysis for the side flange dies. The countermeasure to reduce the highest stress on the forging die surface was easily obtained by CAE. The second example is wear analysis for front wheel hub dies. The formulation regarding die wear that the author established enabled wear analysis by using FEM to reduce the die wear. The review concludes the standard ways to improve the forging die longevity.