著者

柴田 公博 岩瀬 孝邦 坂元 宏規 瀬渡 直樹 松縄 朗 Hobenard Hohenberger Mueller Matthias Dausinger Friedrich

出版者

社団法人溶接学会

雑誌

溶接学会論文集 : quarterly journal of the Japan Welding Society (ISSN:02884771)

巻号頁・発行日

vol.21, no.2, pp.204-212, 2003-05-05

被引用文献数

4

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Welding of Al-Mg and Al-Mg-Si alloys was performed using twin spot beams formed with two Nd: YAG lasers for the purpose of reducing porosities and humping caused due to unstable phenomena of weld bead during welding of aluminum alloys. The relationship between the configuration of the twin spot beam and the quality of the weld beads was investigated using X-ray and high-speed camera observations of the keyhole shapes and weld beads. X-ray observation of the weld beads showed that beam distance had a strong influence on the amount of porosities. At a shorter beam distance, porosities were apt to occurred in the weld. The amount of porosities decreased with an increase of beam distance. Beam distance affects keyhole shapes. The amount of porosities was clearly related to the ratio of keyhole depth to keyhole opening. Larger keyhole opening and/or shallower keyhole depth, smaller amount of porosities caused by instability of the weld pool.

著者

松縄 朗

出版者

公益社団法人 日本金属学会

雑誌

まてりあ (ISSN:13402625)

巻号頁・発行日

vol.34, no.4, pp.412-419, 1995-04-20 (Released:2011-08-11)

参考文献数

32

被引用文献数

3 1

著者

松縄 朗 片山 聖二 藤本 巧宏

出版者

社団法人溶接学会

雑誌

溶接学会全国大会講演概要

巻号頁・発行日

no.33, pp.320-321, 1983-09-20