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- W2319319919 abstract "The high power laser welding is performed with very complicated physical phenomena. These physical phenomena should be visualized using several quantitative measurement methods to get a highly reliable welding process. In this experiment, plasma cloud was investigated using a high speed camera and a measuring device to get a plasma voltage. A moltenpool and keyhole was visualized by CCD camera while irradiating N2 laser on the surface. It was found that plasma size was constant even if welding speed changed at both He and Ar gas atmosphere within this experimental condition. Keyhole diameter on the surface was changed from approximately 1 mm to 1.5 mm while varing welding speed and power. Absorption ratio of stainless steel SUS 304 on keyhole welding, also was measured by calorimetric method by measuring the temperature rise of copper block in which SUS 304 test piece was press-fitted. It was found that the absorption ratio shows an almost constant value of 0.7-0.8 even if input energy (J) has been varied." @default.
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- W2319319919 date "1997-01-01" @default.
- W2319319919 modified "2023-09-27" @default.
- W2319319919 title "A Study on High Power CO2 Laser Welding (1st Report)" @default.
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- W2319319919 doi "https://doi.org/10.2493/jjspe.63.580" @default.
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