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논문 기본 정보

자료유형
학술대회자료
저자정보
저널정보
한국자동차공학회 한국자동차공학회 춘 추계 학술대회 논문집 한국자동차공학회 1995년 춘계학술대회논문집 2호
발행연도
1995.6
수록면
3 - 8 (6page)

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This paper was analized for movement of zinc gas by FEM, during laser lap welds in 0.8mm thick zinc-coated steel sheets with constant laser power and travel speed, This paper was analized for movement of zinc gas by FEM.
Thickness of zinc coating is 3. 57μm, constant laser power 1.7kW and travel speed 1. 7m/min. In the gap's range of 0 to 0.16mm, this simulation was executed. To compare the result from the simulation with experiment, the simulation was proved accesible and applicable to laser welds with other materials.
Because zinc absorbed laser power while zinc was melting and vaporizing, it was proved from result of the simulation that welding process was disturbed by zinc gas while laser welds of zinc-coated steel sheets
If the size of gap is very small, zinc gas is not ejected and existence between two sheets. Therefore the heat of upper sheet isn' t conductable to lower sheet and upper sheet is overmelted. If the size of gap is very large, zinc gas has nearly perfect ejection but only the part of lower sheet is melted. The range of gap size which was between 0.04 and 0.12mm was proved and desirable size of gap was 0.1mm from the simulation.

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ABSTRACT

1.서론

2.시뮬레이션

3.결과 및 고찰

4.결론

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UCI(KEPA) : I410-ECN-0101-2009-556-014109891