异种金属摩擦焊工艺温度场数值模拟研究

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英文篇名：Numerical Simulation Study of Temperature Field in the Process of Dissimilar Metal Friction Welding 作者：陈帮军 ; 张保丰 英文作者：CHEN Bangjun;ZHANG Baofeng;Huanghe Science & Technology College; 关键词：陶瓷 ; 摩擦焊接 ; 温度分布 ; 中间层 英文关键词：Ceramics;;Friction welding;;Thermal distribution;;Interlayer 中文刊名：JCYY 英文刊名：Machine Tool & Hydraulics 机构：黄河科技学院; 出版日期：2019-06-15 出版单位：机床与液压 年：2019 期：v.47;No.485 基金：河南省民办高校品牌专业(ZLG201601) 语种：中文; 页：JCYY201911042 页数：5 CN：11 ISSN：44-1259/TH 分类号：146+182-185

摘要

基于摩擦焊接过程中热-力学现象,建立摩擦焊接过程中热力耦合模型,对陶瓷/金属焊接过程中温度分布进行数值模拟。所提出的模型能够预测金属陶瓷摩擦焊接过程中随时间增量的温度分布情况;焊接界面区域产生的摩擦热消耗中间层铝,并在氧化铝和低碳钢之间建立焊接层。由于氧化铝和低碳钢具有不同的温度属性,在界面处会产生更多的热应力。数值模拟用来预测氧化铝/低碳钢接口处残余应力的变化情况,进而避免异种金属摩擦焊接过程中不完全联锁、接头强度差的现象。
        Based on the thermo mechanical phenomenon in friction welding process, a thermo mechanical coupling model is established to simulate the temperature distribution during ceramic/metal friction welding. The proposed model could predict the temperature distribution in the process of metal ceramic friction welding with time increment. The friction heat generated in the welding interface area was consumed the aluminum in the middle layer and established the welding layer between alumina and low carbon steel. Because of the different temperature properties of alumina and low carbon steel, more thermal stress would be produced at the interface. Numerical simulation is used to predict the change of residual stress at interface between alumina and low carbon steel, to avoid incomplete interlocking and poor strength of joints during dissimilar metal friction welding.

引文

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