Product Code: ICAL05_902
Heat Conduction Welding of Thin Films with Elliptical Beam of Direct Diode Laser
Authors:
Nobuyuki Abe, Osaka University; Ibaraki, Osaka Japan
Masahiro Tsukamoto, Osaka University; Ibaraki Osaka Japan
Takashi Imanaka, Osaka University; Ibaraki Osaka Japan
Yoshinori Funada, Industrial Research Institute of Ishikawa; Kanazawa Ishikawa Japan
Presented at ICALEO 2005
Recently there has been a growing trend toward miniaturization of electronics and mechanical parts to reduce energy consumption and achieve greater compactness. In order to respond to such demands, the development of an advanced welding method is required for welding thin foil 100 microns or less in thickness. In our previous report, we examined the application of a finely focused elliptical beam of direct diode laser for edge-, butt-, corner-, and lap-welding of thin foils. This beam shape enables welding with a narrow bead at a high speed and low power. Moreover, the welding phenomena are calm because of its low power density. These characteristics are caused by the heat conduction type welding with the low power density elliptical beam. In this report, characteristics of heat conduction welding of thin foils with a finely focused elliptical beam of direct diode laser will be discussed with welding parameters such as power, power density, welding speed, and surface conditions, together with finite element analysis.
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