| 摘要: |
| 利用余高–熔宽比表示焊缝表面铺展性并与焊缝余高一起作为参数来评价复合热源平板堆焊焊缝的表面成形，通过试验研究了Nd:YAG激光+脉冲MAG复合热源堆焊过程中焊接规范参数对复合热源平板堆焊焊缝表面成形的影响并分析了激光对复合热源堆焊焊缝表面成形的影响。研究结果表明，在电弧功率变化过程中，随着激光功率的增大，其对平板堆焊焊缝表面成形的影响也逐渐增大；焊接速度变化过程中，激光束能量的加入不仅改善堆焊焊缝表面成形还极大地提高了焊接速度；而在光丝间距和离焦量变化过程中，激光束对复合热源平板堆焊焊缝表面成形的影响很小。 |
| 关键词: 激光焊接 复合热源焊接 脉冲MAG焊 焊缝成形 平板堆焊 |
| DOI： |
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| Influences of Welding Parameters on Weld Appearance in Nd:YAG Laser + Pulsed MAG Hybrid Cladding |
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QIN Guo-liang， LEI Zhen， LIN Shang-yang， HE Shi， WANG Xu-you， WANG Wei
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Harbin Welding Institute, China Acdemy of Machinery science & technology Harbin 150080
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| Abstract: |
| The reinforcement-width ratio was used to indicate the welding metal spreadability, and to evaluate the welding appearance of bead-on-plate in Nd:YAG laser + pulsed MAG(Metal Active Gas) hybrid cladding. The influences of hybrid welding parameters on welding appearance of bead-on-plate were studied by experiments. The results showed that their influence will be strengthened with increasing of laser power in variation of arc power,. The combination of Nd:YAG laser energy into pulsed MAG welding can not only improve the hybrid weld appearance, but also greatly increase the welding speed. The influence of Nd:YAG laser on hybrid weld appearance is light in variation of laser-arc distance and defocusing distance. |
| Key words: laser welding hybrid welding pulsed MAG welding weld appearance bead-on-plate |
