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激光焊接时等离子体电流的产生机制及其数学模型
引用本文:姜平,陈武柱,夏侯荔鹏,张旭东,田志凌.激光焊接时等离子体电流的产生机制及其数学模型[J].中国激光,2002,29(5):471-474.
作者姓名:姜平  陈武柱  夏侯荔鹏  张旭东  田志凌
作者单位:1. 清华大学机械工程系,北京,100084
2. 北京钢铁研究总院,北京,100081
基金项目:国家重点基础研究发展规划 (G19980 6 15 0 0 ),国家自然科学基金 (5 0 175 0 6 1),清华大学 985基金 (No .0 1210 10 5 0 )资助项目
摘    要:通过对激光焊接时等离子体产生机理的分析 ,从等离子体物理理论的角度出发 ,建立了适应于激光焊接等离子体电特性的数学模型。该模型能够较好地解释等离子体电信号随喷嘴 工件距离的增加而单调减小的规律

关 键 词:激光焊接  等离子体  数学模型  电信号
收稿时间:2001/2/12

Mechanism and Mathematical Model of the Laser-induced Plasma Currentin Laser Welding
JIANG Ping ,CHEN Wu zhu ,XIAHOU Li peng ,ZHANG Xu dong ,TIAN Zhi ling.Mechanism and Mathematical Model of the Laser-induced Plasma Currentin Laser Welding[J].Chinese Journal of Lasers,2002,29(5):471-474.
Authors:JIANG Ping  CHEN Wu zhu  XIAHOU Li peng  ZHANG Xu dong  TIAN Zhi ling
Affiliation:JIANG Ping 1,CHEN Wu zhu 1,XIAHOU Li peng 1,ZHANG Xu dong 1,TIAN Zhi ling 2 1Department of Mechanical Engineering,Tsinghua University,Beijing 100084 2Central Iron and Steel Research Institute,Beijing 100081
Abstract:This paper analyses the mechanism of the laser induced plasma current and establishes a mathematical model for laser welding. The model satisfyingly interprets the regularity of the plasma charge signal decreasing monotonously with the increase of the nozzle workpiece distance, which coincides well with the experimental results.
Keywords:laser welding  laser  induced plasma  mathematical model  plasma charge signal
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