| Nd:YAG激光深熔焊接过程中同轴保护气流量对小孔的影响 |
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| 引用本文： | 秦国梁,林尚扬.Nd:YAG激光深熔焊接过程中同轴保护气流量对小孔的影响[J].焊接学报,2005,26(3):33-36. |
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| 作者姓名： | 秦国梁 林尚扬 |
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| 作者单位： | 机械科学研究院,哈尔滨焊接研究所,哈尔滨,150080 |
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| 摘 要： | 通过对利用同轴视觉传感系统所采集的Nd：YAG激光深熔焊接过程中小孔图像的处理研究了同轴保护气流量对激光深熔焊接过程中小孔的影响。研究表明，同轴保护气流量的变化对小孔上部的影响较大，而对小孔内部的影响很弱。而在较高气流量下，小孔外边缘的径向尺寸随同轴保护气流量的增加而减小，而小孔内边缘的径向尺寸变化很小。小孔内、外边缘中心到激光光斑中心的距离随着同轴保护气流量的增加而减小，说明随着同轴保护气流量的增大小孔竖直轴线越来越靠近激光束轴线。
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| 关 键 词： | Nd：YAG CW激光 深熔焊 小孔 同轴保护气 流量 |
| 文章编号： | 0253-360X(2005)03-33-04 |
| 收稿时间： | 2004/4/5 0:00:00 |
Influence of coaxial shielding gas flux on keyhole in Nd:YAG CW laser deep-penetration welding |
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| QIN Guo-liang and Lin Shang-yang.Influence of coaxial shielding gas flux on keyhole in Nd:YAG CW laser deep-penetration welding[J].Transactions of The China Welding Institution,2005,26(3):33-36. |
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| Authors: | QIN Guo-liang and Lin Shang-yang |
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| Affiliation: | Harbin Welding Institute, Harbin 150080, China and Harbin Welding Institute, Harbin 150080, China |
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| Abstract: | The influence of coaxial shielding gas flux on keyhole was studied by processing the captured coaxial image of keyhole. The results show that the coaxial shielding gas has great influence on the upside of keyhole and its influence on keyhole bottom is weak. For more flux of coaxial shielding gas, the radial dimension of outer edge of keyhole increases but the radial dimension of inner edge of keyhole varies little. The distances from the centers of keyhole edges to that of laser spot decrease with increasing the flux of coaxial shielding gas, which indicates that the vertical axis of keyhole is nearer to that of laser beam. In general, coaxial shielding gas has little influence on keyhole. |
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| Keywords: | solid laser deep penetration welding keyhole coaxial shielding gas flux |
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