A Theoretical Model of Arc Light Radiation Based on GTA Spectral Diagnosis

作     者：Chenming XU Hongming GAO Guangjun ZHANG Lin WU 

作者机构：State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China State Key Laboratory of Advanced Welding Production Technology Harbin Institute of Technology Harbin 150001 China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2003年第19卷第Z1期

页      面：99-100页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：Spectral diagnosis, Arc light radiation, Theoretical model, TIG 

摘      要：An arc light radiation phenomenon in TIG welding process was studied through experiments and theoretical *** arc spectra were acquired under a variety of welding parameters from 200 nm to 1000 nm wavelength rangein TIG. The influence of welding parameters on the arc radiation was discussed. The radiation energy from linesemission mechanisms was calculated and the comparison was made with the one from the continuum emissionmechanisms. The result shows that the radiation energy from the line emission mechanisms is equal to the one fromthe background. Based on the experiments and analysis, a physical model of arc light radiation has been *** this model. the arc plasma was presumed to be in local thermal equilibrium (LTE) with light thinness *** Bolzmann distribution and Saha equation were applied to establish the arc light radiation model. This helps laythe foundation for further mathematical modeling of the arc light radiation.