一种电子束扫描焊控制技术
A control technique for electron-beam scan welding
-
摘要: 阐述了由有限线段和圆弧组合逼近二维焊缝轨迹扫描焊的三步骤:示教寻迹、轨迹计算和扫描焊.采取斜角与直角坐标数据互换,解决制造工艺引起的x,y扫描轴不垂直问题;采用以电子束偏转幅值及速度为因变量动态校正偏扫励磁电流方法,解决扫描轨迹失真问题;采用以电子束偏移矢量为因变量动态校正聚焦励磁电流方法,解决偏转后束斑散焦问题."跑道"形焊缝扫描焊试验结果为:焊缝偏离中心小于0.08 mm、焊缝深度误差小于0.13 mm、焊缝表面宽度误差小于0.16 mm,结果表明,电子束扫描焊三步骤能够比较精确地复现焊缝轨迹及较好的焊接效果.Abstract: In electron-beam(EB) scan welding, the 2D seam tracking could be approximated by combination of limited line segments and basic arc graphics, hence the whole welding processes could be divided into 3 steps: tracing of teaching, calculating of tracking data, and scan welding. In these processes, three main problems, non-vertical of x-y scanning axis, distortion of scanning track and defocusing of EB spot could be solved by proper conversion of oblique and rectangular coordinates, dynamic correction of deflection scanning magnetizing current with EB's deflection amplitude and velocity, and dynamic correction of focusing magnetizing current with EB's deflection vector, respectively. The welding results with "track field" type seam tracking reveal that, eccentric distance is above 0.08 mm, depth error is lower than 0.13 mm, width error in surface is lower than0.16 mm. The proposed welding method could precisely repeat the seam tracking and obtain excellent welding quality.
-
-
期刊类型引用(8)
1. 李爱滨，钱明芳，张学习，耿林. MATLAB离散数据数值积分教学案例——泡沫铝材料吸能特性计算. 实验技术与管理. 2023(01): 169-174 . 
百度学术
2. 虞雨洭，吴正凯，吴圣川. 高分辨三维成像原位试验机研制进展及应用. 中国材料进展. 2021(02): 90-104+111 . 百度学术
3. 贺秀丽，梁红玉，闫志峰，白瑞. 腐蚀环境与疲劳载荷作用下AZ31镁合金声发射波形特征分析. 中国有色金属学报. 2021(04): 826-835 . 百度学术
4. 贺秀丽，梁红玉，闫志峰. AZ31镁合金单向及交变载荷作用下声发射波形特征对比分析. 锻压技术. 2021(08): 193-198 . 百度学术
5. 吴正凯，吴圣川，张杰，宋哲，胡雅楠，康国政，张海鸥. 基于同步辐射X射线成像的选区激光熔化Ti-6Al-4V合金缺陷致疲劳行为. 金属学报. 2019(07): 811-820 . 百度学术
6. 王苹，温学，米莉艳，方洪渊. 焊接接头等承载设计. 焊接. 2019(11): 1-7+65 . 百度学术
7. 宋哲，吴圣川，胡雅楠，康国政，付亚楠，肖体乔. 冶金型气孔对熔化焊接7020铝合金疲劳行为的影响. 金属学报. 2018(08): 1131-1140 . 百度学术
8. 王龙，冯国林，李志强，吴建国，张伟. X射线断层扫描在材料力学行为研究中的应用. 强度与环境. 2017(06): 43-56 . 百度学术
其他类型引用(10)
计量
- 文章访问数: 254
- HTML全文浏览量: 13
- PDF下载量: 85
- 被引次数: 18
下载:
