• 제목/요약/키워드: 탄산가스용접

검색결과 19건 처리시간 0.024초

$CO_2$ 용접 의 결함 원인 및 대책 (Causes and preventions of $CO_2$ arc welding defects)

  • 정수원;이정대
    • Journal of Welding and Joining
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    • 제1권1호
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    • pp.6-12
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    • 1983
  • 탄산가스 아아크 용접법은 다른 용접법에 비해 전자세 용접의 기능, 용접능률의 우수성, 생산적인 측면에서의 뛰어난 경제성으로 인해 중공업 분야에서 그 적용 추세가 증가일로에 있다. 당사( 현대중공업)에서는 1981년에 탄산가스 아아크 용접법이 현장 구조물 시공에 최초로 적용된 이래 꾸준히 증가하여 보편적으로 시용되는 용접법 중위 하나가 되었다. 탄산가스 아아크 용접법의 여러 가지 장점을 적극적으로 이용하기 위해서는 탄산가스 아아크 용접시 발생하는 결함의 원 인을 분석하여 결함을 최소화하는 대책이 강구되어야 한다. 탄산가스 아아크 용접시 발생하는 결함의 빈도를 조사하여, 빈도수가 많은 결함의 원인을 분석하고 그 방지대책을 세우는데 본고의 목적이 있다.

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MAG용접시 보호가스 조성변화에 의한 용접특성 변화 및 원가절감 (Effect of Shielding Gas on the MAG Welding Characteristics and Cost Reduction)

  • ;황선효;정재필;박영조
    • Journal of Welding and Joining
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    • 제12권1호
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    • pp.51-58
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    • 1994
  • Amount of spatter, welding conditions and welding costs were investigated for MAG welding. $CO_2$, Ar+18%;$CO_2$ and Ar+8%$O_2$ were used for shielding gases. As results, arc characteristics and appropriate range for welding were obtained. Amount of spatter in Ar+18%$CO_2$ gas welding was 20% of that of $CO_2$ welding, and Ar+8%$O_2$ was 10% of that of $CO_2$ welding. Therefore by using Ar+18%$CO_2$and Ar+8%$O_2$ gases, welding costs could be reduced compared with $CO_2$ welding due to avoiding spatter.

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CO_2$ 용접에서 전기적인 아크신호를 이용한 수평 필릿 용접선 추적에 관한 연구 (A study on the seam tracking in CO_2$ fillet welding by using an arc sensor)

  • 선채규;김재웅;나석주;조형석;최칠룡
    • Journal of Welding and Joining
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    • 제8권3호
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    • pp.70-78
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    • 1990
  • The harsh nature of welding environments makes welding a prime candidate for process automation. Among the variety of welding processes available, gas metal arc welding is one of the most frequently used methods, primarily because it is highly suited to a wide range of applications, and also to automation. Automatic seam tracking method is one of the most demanded techniques for automatic control of arc welding. In this study a seam tracking system has been developed by using the welding arc itself as a sensor. This paper described the principle and experimental result of the arc sensor system, as well as the development and application of the automatic CO_2$ welding for the horizontal fillet welding. A basic problem in horizontal fillet welding is the prevention of hanging bead formation such as undercut at the vertical plate and overlap at the horizontal plate. To produce the symmetric bead shape, the relationship of bead shape to welding parameters(welding velocity, weaving width, weaving speed, tip to workpiece distance) was also investigated.

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