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電磁鋼板製品へのレーザ溶接の適用

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川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.14 (1982) No.2

電磁鋼板石製品へのレーザ溶接の適用

Application of Laser Welding to Electrical Steel Strip

小野 弘路(Koji Ono) 多鹿 洋(Hiroshi Tajika) 長坂 省治(Shouji Nagasaka) 田中 茂(Shigeru Tanaka) 藤井 守(Mamoru Fujii) 佐々木 弘明(Hiroaki Sasaki)

要旨 : 電磁鋼板の製品溶接にCO2 レーザー溶接を適用すると,従来の溶接法より,良好な溶接部 品質,すなわち,外観,形状および機械的性質において,優れた品質が得られることがわ かった。レーザ溶接は,非常に細い集光ビームを用いるため,厳密な突合せ精度および直 線性精度が必要となる。突合せ溶接にレーザビームの適用を成功させるには,如何にして, 安全かつ能率的に上記精度を確保するかが重要であるが,それをシャーおよび溶接機に 種々施策することで実現し得たので報告する。 Synopsis :

Application of CO**2 laser beam to the square butt welding for electrical steel strip has greatly enhanced welding qualities, resulting in better appearances, accuracy in dimensions and mechanical properties of the weld. Laser beam is so sharp and requires very precise fit-up of both strips sheared edges and alignment between beam running line and fit-up line. Key to a success in using laser for square butt welding is how to obtain the accuracy of fit-up and alignment stably and efficietly in precitical production line.

(c)JFE Steel Corporation, 2003

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