PDF全文下载：2014040396
张明贤1， 贾传宝2*
(1.山东省特种设备检验研究院，山东 济南 250101； 2.山东省科学院海洋仪器仪表研究所 山东省特种焊接技术重点实验室，山东 青岛 266001）
摘要： 针对某型自保护药芯焊丝设计焊接工艺试验，利用光谱仪和专用分析软件研究焊接过程中电弧等离子体辐射光谱分布曲线，对其在各谱段的分布特征进行分析，认为紫外波段的光谱曲线波长较短且衰减严重；可见光波段整体相对辐射强度较高，特别是在绿光和黄光区域尤为强烈，在红光区域电弧光谱相对强度较为稳定；在近红外波段电弧光谱辐射强度逐渐下降。综合考虑不同的应用对象，可见光波段适用于电弧等离子体物理本质研究，自保护药芯焊丝电弧等离子体和熔滴过渡的检测适合采用红光光谱窗口，而焊缝跟踪等则适合采用近红外或者红光光谱窗口。
关键词： 电弧辐射； 光谱； 药芯焊丝； 焊缝跟踪
中图分类号： O 63文献标志码： A
收稿日期： 20140430
基金项目： 国家自然科学基金项目（51105237）.
作者简介： 张明贤（1979—），男，硕士研究生，工程师. *通信联系人.
Analysis and Selection of Spectral Characteristic Band During Fluxcored Wire Arc Welding Process
ZHANG Mingxian1， JIA Chuanbao2
(1. Shandong Special Equipment Inspection Institute,Jinan250101,China; 2. Provincial Key Laboratory of Special Welding Technology, Institute of Oceanographic Instrumentation,ShandongAcademyof SciencesShandong,Qingdao266001,China)
Abstract: Welding experiments were designed based on a type of selfshielded flux cored wire. Spectrometer and special analysis software were used to collect and study the spectral distribution curve of arc plasma during the welding processes. By analyzing the distribution characteristics of spectroscopic radiation in different bands, it was found that the spectral signals in ultraviolet band were collected with severe attenuation due to short wavelengths; the overall relative indensity of the spectral signals in visible band is high, especially in the green and yellow area. In the red light region, the relative intensity of arc spectrum is relatively stable; decreased gradually in the near infrared band arc spectrum radiation intensity. Considering the application of different research purpose, it is concluded that the visible light wave band should be applied to study the physical nature of the plasma arc; red light spectrum window can be used for the detection of arc plasma behaviors and droplet transition; and the near infrared or red spectral window can be used for seam tracking technique research.
Key words: arc radiation; spectrum; fluxcored wire; seam tracking
