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| 一种激光热传导钎焊的热源模型 | |
| 引用本文： | 赵朋成,王璐璐,李淑江,武传松,史平安. 一种激光热传导钎焊的热源模型[J]. 焊接学报, 2011, 32(3): 13-16 |
| 作者姓名： | 赵朋成 王璐璐 李淑江 武传松 史平安 |
| 作者单位： | 1. 青岛科技大学,机电工程学院,山东,青岛,266061 2. 山东大学,材料连接技术研究所,济南,250061 3. 中国工程物理研究院,结构力学研究所,四川,绵阳,621900 |
| 基金项目： | 中国工程物理研究院重大基金资助项目 |
| 摘 要： | 根据熔池具有较小深宽比的特征,发展了一种适合于铍板激光热传导钎焊的热源模型.分别建立了由表面高斯热源和内部旋转体积热源,按不同比例构成的复合热源、指数旋转抛物线体热源和线性旋转抛物线体热源三种模型.利用这三种模型计算了同一焊接条件下起焊点前2 mm处一点的焊接热循环曲线和熔池横断面轮廓,并进行了试验验证.目前的研究中用... |
| 关 键 词： | 激光热传导钎焊 热源模型 指数旋转抛物线体热源 |
| 收稿时间： | 2009-11-11 |
A heat source model for laser heat-conduction brazing |
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| ZHAO Pengcheng,WANG Lulu,LI Shujiang,WU Chuansong and SHI Ping''an. A heat source model for laser heat-conduction brazing[J]. Transactions of The China Welding Institution, 2011, 32(3): 13-16 | |
| Authors: | ZHAO Pengcheng WANG Lulu LI Shujiang WU Chuansong SHI Ping''an |
| Affiliation: | College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266061, China,College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266061, China,College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, Shandong, 266061, China,Institute of Materials Joining, Shandong University, Jinan 250061, China and Institute of Structural Mechanics, China Academy of Engineering Physics, Mianyang, Sichuan 621900, China |
| Abstract: | A heat source model suitable for laser heat-conduction brazing of Beryllium plates was developed according to the weld pool with a characteristic of small depth-width ratio.Three models were established respectively such as the compound heat source model that combined Gauss model with rotary body model in different proportions,the exponential-rotary parabolic body heat source model and the linear-rotary parabolic body heat source model.The thermal cycle curves of a point 2 mm ahead the start point and weld pool contours on cross section were predicted under same welding conditions by the three models,and welding experiments were performed to verify the models.The weld pool contours predicted by the two former models were compared in one experiment and the result showed they were.Meanwhile,it could not obtain a weld pool by using the linear-rotary parabolic body heat source model in current study.Results showed that the exponential-rotary parabolic body heat source model was the best one for its less parameter and good agreement with the experimental results. |
| Keywords: | laser heat-conduction brazing heat source model exponential-rotary parabolic body heat source |
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