Transactions of Materials and Heat Treatment

Title：Influence research of extrusion temperature on warm extrusion die load and stress

Authors： Zhang Anmin

Unit： Luzhou Vocational and Technical College

KeyWords： warm extrusion extrusion temperature die load finite element simulation cracking

ClassificationCode：

year,vol(issue):pagenumber：2014,39(7):106-112

Abstract：

It is found from the production site that most punches would be cracked and failed for repeated loading when squeezing shell parts less than 200. The situation of die load and stress are directly affected by extrusion temperature. Based on this, the influence laws of extrusion temperature to die load and stress were discussed using Deform and technology test, and reasonable extrusion temperature range to guide practice was put forward，which improved the die life. From the simulation，the die temperature distribution graph when warm extrusion，the relationship curves of load of punch and female die with stroke at different extrusion temperatures and the relationship curves between effective stress of punch and female die and punch stroke at different extrusion temperatures were obtained. The shell parts were processed with the same set of parameters, and the experimental results are consistent with simulation. The results show that when warm extrusion temperature is bigger than 700 ℃,the die cracking is avoided and the die life is improved for mold material of 3Cr2W8V.

Funds：

“过程装备与控制工程四川省高校重点实验室”项目（GKZY201103）

张安民（1965-），男，硕士，副教授

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