电火花放电通道蚀除绝缘工程陶瓷的热力学特性研究

刘永红; 于丽丽; 徐玉龙; 纪仁杰; 李庆云

doi:10.11858/gywlxb.2009.02.003

电火花放电通道蚀除绝缘工程陶瓷的热力学特性研究

doi: 10.11858/gywlxb.2009.02.003

中国石油大学（华东）机电工程学院，山东东营 257061

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通讯作者:
刘永红

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出版历程
- 收稿日期: 2008-07-08
- 修回日期: 2008-10-15
- 刊出日期: 2009-04-15

Thermodynamic Characteristics of Machining Insulating Engineering Ceramics with Electrical Discharge Channel

School of Electromechanical Engineering, China University of Petroleum, Dongying 257061, China

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Corresponding author: LIU Yong-Hong

摘要

摘要: 研究开发出一种绝缘工程陶瓷电火花加工新技术，它是利用电火花放电通道流经绝缘工程陶瓷表面时产生的瞬时高温作用进行蚀除加工的。建立了电火花放电通道热蚀除加工绝缘工程陶瓷的温度场和热应力场数学模型，对绝缘工程陶瓷表面上的温度梯度和热应力场进行了数值模拟，给出了火花放电通道在绝缘工程陶瓷表面上形成的温度梯度和热应力分布规律。模拟结果为揭示绝缘工程陶瓷的电火花微观去除机理、预测绝缘工程陶瓷表面的微观形貌和电加工参数的选择等奠定了理论基础。
- 绝缘工程陶瓷 /
- 电火花加工 /
- 温度梯度 /
- 热应力 /
- 数值模拟
Abstract: A new technique of machining insulating engineering ceramics with instantaneous high temperature produced by electrical discharge channel (EDC) flowing insulating engineering ceramic surface is developed. The mathematical models for the temperature and thermal stress of machining insulating ceramics with EDC are established. The numerical simulation on the temperature gradient and thermal stress of electrical discharge machining insulating engineering ceramics are done. The distribution of the temperature gradient and thermal stress produced by EDC on the insulating engineering ceramic surface are given. The simulation results give the theoretic foundation for revealing the micro-scale mechanism of removing insulating engineering ceramics with EDC, predicting the microcosmic profile of insulating engineering ceramic surface machined by EDC, and selecting the electrical parameter for the new process.
- insulating engineering ceramics /
- electrical discharge machining /
- temperature gradient /
- thermal stress /
- numerical simulation

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参考文献(23)

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