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Ultra high power (100 kW) fiber laser welding of steel

机译:超高功率(100 kW)光纤激光焊接钢

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摘要

A 100 kW fiber laser was first used to weld steel. Speeds at the range between 0.3 and 5.0 m/min were tested, and the maximum weld bead depth of 70 mm was achieved by single pass welding. Solidification cracking and porosity occurred when the welding speed was lower than 0.5 m/min, while undercut appeared when the welding speed was higher than 3.0 m/min. Both the ratio of depth to width and the cross section area of the weld bead had a positively linear relationship with the welding speed. A high speed camera was used to observe the characteristics of the keyhole and molten pool. The average number of spatters increased with the welding speed, while the keyhole diameter and the length of the molten pool in front of the keyhole decreased with the welding speed. This Letter validates the application potential of a 100 kW ultra high power fiber laser in manufacturing, e.g., welding, cutting, and additive manufacturing. (C) 2018 Optical Society of America
机译:首先使用100 kW光纤激光器焊接钢。 测试了0.3和5.0米/分钟之间的速度,通过单通焊接实现了70mm的最大焊珠深度。 当焊接速度低于0.5米/分钟时发生凝固裂化和孔隙率,而当焊接速度高于3.0米/分钟时,底切出现。 焊接珠的深度与宽度和横截面面积的比率都具有与焊接速度的正线性关系。 高速相机用于观察锁孔和熔池的特性。 随着焊接速度的键合直径和钥匙孔前方的熔池长度的平均飞溅物增加。 这封信验证了制造,例如焊接,切割和添加剂制造中100千瓦超高功率光纤激光器的应用势。 (c)2018年光学学会

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  • 来源
    《Optics Letters》 |2018年第19期|共4页
  • 作者单位

    Osaka Univ JWRI 11-1 Mihogaoka Ibaraki Osaka 5670047 Japan;

    Osaka Univ JWRI 11-1 Mihogaoka Ibaraki Osaka 5670047 Japan;

    NADEX Co Ltd Nadex Laser R&

    D Ctr 62-31-2 Azono Tsuruga Fukui 9140141 Japan;

    NADEX Co Ltd Nadex Laser R&

    D Ctr 62-31-2 Azono Tsuruga Fukui 9140141 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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