锻压技术

压扭作用下热作塑性成形模具服役环境模拟方法

英文标题：Simulation method on service environment of thermal plastic forming die under compression-torsion effect

作者：王华君韩念朱春东饶润胤彭军波

单位：武汉理工大学

关键词：武汉理工大学

分类号：TG76

出版年,卷(期):页码：2018,43(8):159-162

摘要：

针对热作模具的寿命预期与失效测试等问题，分析了国内外塑性成形模具服役环境试验模拟的研究现状，重点讨论了热作模具在热塑性变形条件下服役环境的模拟测试方法及装置。通过模拟热塑性成形过程中坯料的应力幅值与环境温度变化，获得热成形模具的服役环境，从而提出了一种基于环境服役条件的热作塑性成形模拟试验方法与装置。该试验装置主要由PLC总控制系统、液动压力系统、声控预测系统、冷却系统、加热系统与扭转系统构成，能实现热疲劳、热摩擦磨损及热疲劳摩擦磨损3种试验模式。该方案可为热作模具塑性成形过程中失效问题的研究提供试验支撑。

Aiming at problems of life expectancy and failure testing of thermal die, the current research status of service environment simulation of plastic forming die at home and abroad was analyzed, and the simulation test method and device of service environment for thermal die under the condition of thermoplastic deformation were emphatically discussed. Then, the service environment of thermal forming die was obtained by simulating the change of stress amplitude and ambient temperature of blank in the process of thermal plastic forming, and the simulation test method and device for thermal plastic forming based on the service conditions of environment were proposed. The test device is mainly composed of PLC total control system, hydraulic pressure system, sound control prediction system, cooling system, heating system and torsion system, which can realizes three test modes including thermal fatigue, thermal friction wear and thermal fatigue friction wear. The research provides experimental support for the study of failure in the plastic forming process of thermal die.

基金项目：

国家自然科学基金资助项目(51475346)

王华君（1970-），男，博士，副教授 E-mail：wanghuajunhb@163.com

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