Transactions of Materials and Heat Treatment

Title：Plastic deformation failure analysis of warm extrusion die based on Deform

Authors： LI Yu-qin ZHANG An-min

Unit： Luzhou Vocational and Technical College

KeyWords： warm extrusion plastic deformation die failure die life finite element simulation Deform

ClassificationCode：TG376

year,vol(issue):pagenumber：2011,36(6):141-145

Abstract：

For the die early failure because of plastic deformation, the warm extrusion process of a shell part was simulated using Deform finite element software. Temperature field distribution of mould was acquired. Heat zone thickness of the die front end was acquired with different extruding speeds. The results show that mould plastic deformation will happen because the punch stress exceeds the die material yield strength when blank temperature under 700 ℃. The smaller the extrusion speed, the more serious the punch upsetting and wear.When mould temperature is higher than 400 ℃, the plastic deformation will happen easily beacase of hardness sharply decreasing with temperature increasing.

Funds：

院级青年基金资助项目(K-1010)

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