Proceedings of the KWS Conference (대한용접접합학회:학술대회논문집)
- 2002.10a
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- Pages.187-192
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- 2002
Nd-YAG LASER MICRO WELDING OF STAINLESS WIRE
- Takatugu, Masaya (Graduate School of Engineering, Osaka University) ;
- Seki, Masanori (Shape Corporation) ;
- Kunimas, Takeshi (Kansai Electric Power Co., Inc.) ;
- Uenishi, Keisuke (Graduate School of Engineering, Osaka University) ;
- Kobayashi, Kojiro F. (Graduate School of Engineering, Osaka University) ;
- Ikeda, Takeshi (Fine Process Company Ltd.) ;
- Tuboi, Akihiko (Fine Process Company Ltd.)
- Published : 2002.10.01
Abstract
Applicability of laser micro welding process to the fabrication of medical devices was investigated. Austenitic stainless steel wire (SUS304) was spot melted and crosswise welded, which is one of the most possible welding process for the fabrication of medical devices, by using a Nd-YAG laser. Effects of welding parameters on the microstructure, tensile strength and corrosion resistance were discussed. In the spot melting, melted metal width decreased with decreasing the input energy and pulse duration. Controlling the laser wave to reduce laser noise which occurred in the early stage of laser irradiation made reasonable welding condition wider in the welding condition of small pulse duration such as 2ms. The microstructure of the melted metal was a cellular dendrite structure and the cell size of the weld metal was about 0.5~3.5