2018
DOI: 10.1007/s00170-018-2592-7
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Role of ambient pressure in keyhole dynamics based on beam transmission path method for laser welding on Al alloy

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Cited by 14 publications
(3 citation statements)
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“…In addition, the VLBW characteristics of various materials were analyzed [22], and a mobile vacuum system was designed to improve economic viability, and the local low vacuum effect was observed [23]. Recently, numerical simulation models for keyhole dynamics and weld pool flow have been suggested for VLBW [24,25]. The contamination of the coupling glass was quantified as a measure of the performance of the protective system [12], and the contamination was revealed as influenced by the shielding gas flow rate and the diameter of the gas supply nozzle.…”
Section: Introductionmentioning
confidence: 99%
“…In addition, the VLBW characteristics of various materials were analyzed [22], and a mobile vacuum system was designed to improve economic viability, and the local low vacuum effect was observed [23]. Recently, numerical simulation models for keyhole dynamics and weld pool flow have been suggested for VLBW [24,25]. The contamination of the coupling glass was quantified as a measure of the performance of the protective system [12], and the contamination was revealed as influenced by the shielding gas flow rate and the diameter of the gas supply nozzle.…”
Section: Introductionmentioning
confidence: 99%
“…이 용 기ㆍ천 현 필ㆍ김 철 희 Journal of Welding and Joining, Epub ahead of print 2 확보가 가능하며 10,11) , 대기압 부근의 낮은 진공도를 활용함에 따라 진공 분위기 조성을 위한 시간이 줄어들 어 생산성이 증가하였고, 방사선을 차폐하기 위한 별도 의 장치가 필요 없다는 장점을 갖고 있다. 저진공 레이 저 용접은 고품질이 필수적으로 요구되는 파워트레인 부품의 용접 12) 이나 대용입 필요한 극후판 부품 13) 깊게 얻을 수 있다 14,15) . 또한 용입 깊이는 저진공 레 이저용접 시 레이저 유기 플룸의 감소에 의해서도 영향 을 받는데 이는 3절에서 상세하게 다룬다.…”
unclassified
“…2와 같이 16,17) . Youhei (a) S355 steel 16) , and (b) Al 5052 alloy 19) Journal of Welding and Joining, Epub ahead of print 수치해석적인 접근을 통해 키홀의 거동을 예측하기도 하였다 4,14,39) . 대기압에 비해 0.01 kPa 진공도에서는 고속카메라를 활용하여 용융풀 표면에서의 변동성이 분석된 사례가 존재하며 35,37,42) , 키홀의 거동을 관찰하 는 방식과 마찬가지로 내열 글래스를 활용하여 키홀 후 면부의 용융풀 거동이 관찰되기도 하였다 15) (Fig.…”
unclassified