Journal of Welding and Joining

  • 제26권6호
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  • Pages.42-47
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  • 2008
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  • 2466-2232(pISSN)
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  • 2466-2100(eISSN)
대한용접접합학회 (The Korean Welding and Joining Society)
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A-TIG 용접에서 용입 형상비에 미치는 아크길이와 실드가스의 영향

The Eeffect of Arc Length and Shield Gas on Penetration Aspect Ratio in A-TIG Welding

  • 박인기 (CS 윈드타워 중국) ;
  • 함효식 (부경대학교 대학원 소재프로세스공학) ;
  • 조상명 (부경대학교 신소재공학부)
  • 발행 : 2008.12.31
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초록

TIG welding enables to produce high quality weldment. However it has some problems such as shallow penetration and large distortion due to low penetration aspect ratio after welding. In order to overcome those problems, there are many ongoing studies on A-TIG welding, which use active flux. In this study, the effect of arc length and shield gas on penetration aspect ratio with melt-run welding on STS 304 6t, on which active flux was spreaded, was investigated. Arc length was changed from 1mm to 3mm, and aspect ratio became higher as arc length was decreased in this range. 100% Ar gas, Ar-$H_2$ mixed gas, Ar-He mixed gas, and 100% He gas were used as shield gas in this study. When Ar-$H_2$ mixed gas, Ar-He mixed gas, and 100% He gas were applied, penetration and melting efficiency were both increased as compared with 100% Ar gas. Aspect ratio was the highest with Ar-2.5% $H_2$ mixed gas.

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참고문헌

  1. J J Lowke, M Tanaka and M Ushio : Mechanisms giving increased weld depth due to a flux, Journal of physics D applied physics, 38 (2005) 3438-3445 https://doi.org/10.1088/0022-3727/38/18/018
  2. Paulo J. Mondesi, Eustaquio R. Apolinario and Iaci M. Pereira : TIG welding with single-component fluxes, Journal of materials processing technology 99(2000) 260-265 https://doi.org/10.1016/S0924-0136(99)00435-5
  3. Manabu Tanaka : Numerical study of gas tungsten arc plasma with anode melting, Science direct Vacuum 73 (2004) 381-389
  4. Hyo-Sik Ham, In-Ki Park, Young-Duk Moon and Sang-Myung Cho : Development of A-TIG Welding process for deep Penetration and decreasing deformation, Proceedings of the KOSME 2006 Second Conference, 139-140 (in Korean)
  5. Jin-An Cho, Dong-Soo Oh, Dong-Soo Hwang and Sang-Myung Cho : Development of the high performance digital calorimeter to measure the melting efficiency of arc welding, Proceedings of the 2006 Autumn Annual Meeting of Korean Welding and Joining Society, 92-94 (in Korean)
  6. J. Tusek and M. Suban : Experimental research of the effect of hydrogen in argon as a shielding gas in arc welding of high-alloy stainless steel, International journal of hydrogen energy 25(2000) 369-376 https://doi.org/10.1016/S0360-3199(99)00033-6
  7. Dong-Soo Oh, Yeong-Sik Kim and Sang-Myung Cho : Derivation of Current Density Distribution by Arc Pressure Measurement in TIG Welding, Science and Technology of Welding and Joining, 10(4), 2005 442-446 https://doi.org/10.1179/174329305X44116
  8. Chul-Woo Nam, Yeong-Yoon Choi, Byung-Su Kim, Dong-Hyo Yang and Kyung-Ho Park : Recovery Technology of Metals by Chlorination, KIGAM Bulletin 10-1, 43-58