氩光谱诊断TIG焊电弧等离子体温度方法研究  

Study on the Method of Argon Spectroscopy for Diagnosing the Temperature of TIG Welding Arc Plasma

作　　者：董向成 晏丽琴 DONG Xiang-cheng;YAN Li-qin(BaiLie School of Petroleum Engineering,Lanzhou City University,Lanzhou Gansu 730070;School of BaiLie Mechanical Engineering,Lanzhou City University,Lanzhou Gansu 730070)

机构地区：[1]兰州城市学院培黎石油工程学院,甘肃兰州730070 [2]兰州城市学院培黎机械工程学院,甘肃兰州730070

出　　处：《甘肃高师学报》2023年第5期6-9,共4页Journal of Gansu Normal Colleges

基　　金：兰州市科技发展指导性计划项目“高速活性TIG焊焊接电弧等离子体光谱特性研究”(2019-ZD-172);甘肃省自然科学基金“用虚拟探测方法研究强场隧穿电离中的非绝热效应”(20JR5RA209)。

摘　　要：在纯氩保护气氛下,使用TIG焊选择不同焊接电流产生电弧等离子辐射,利用CCD光谱仪采集300~900 nm光谱强度数据,参考NIST光谱数据库识别并标定其波长及辐射参数.用光谱信息分析和挖掘方法选定谱线组,利用多谱线斜率法对TIG焊焊接电弧等离子体温度进行诊断.对照140 A和100 A两组不同焊接电流产生的电弧光谱特征,包括线状谱强度及连续谱轮廓都有明显不同,其中140 A焊接电流产生的电弧中心温度可达到12500 K左右,100 A焊接电流产生的电弧中心温度为5100 K左右.该研究方法能够为铁原子谱诊断结果提供印证,从而提高电焊电弧温度诊断的可靠性.Under pure argon atmosphere,arc plasma radiation was generated by TIG welding with different welding currents.The spectral intensity data of 300 nm to 900 nm were collected by CCD spectrometer,and the wavelength and radiation parameters were identified and calibrated with reference to NIST spectral database.The plasma temperature of TIG welding arc was diagnosed by multi-spectral slope method and spectral information analysis and mining method.Compared with 140 A and 100 A,the spectral characteristics of the arc gene.rated by different welding currents,including linear spectrum intensity and continuous spectrum profile,are significantly different.The arc center temperature generated by 140 A welding current can reach about 12500 K,and the center temperature of arc generated by 100 A welding current is about 5100 K.This research method can confirm the diagnosis result of iron atom spectrum and improve the reliability of arc temperature diagnosis.

关 键 词：TIG焊 氩离子光谱 光谱相对强度 多谱线斜率法 

分 类 号：TG403[金属学及工艺—焊接]