• Title/Summary/Keyword: Torch Weaving

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A Study of Arc Modeling and Heat Input Distribution on the Surface during Torch Weaving in Gas Metal Arc Welding (가스 메탈 아크 용접에서 토치 위빙 중 아크 모델링 및 표면 입열 분포 해석에 관한 연구)

  • Kim, Yong-Jae;Rhee, Se-Hun
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.1
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    • pp.162-170
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    • 2001
  • In torch weaving in arc welding on V groove, the heat input distribution on groove surface is a main factor determining the bead shape and the weld quality with and without the weld defects such as undercut, overlap, etc. In this study, we calculate the heat input varying with the welding current, arc voltage, welding speed and the touch weaving condition using numerical method. And we investigate the heat input distribution on groove surface while applying the various grooves having 2 dimensional heat sources.

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A Study of Heat Input Distribution on the Surface during Torch Weaving in Gas Metal Arc Welding

  • Kim, Y.;Park, H.
    • International Journal of Korean Welding Society
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    • v.4 no.1
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    • pp.23-29
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    • 2004
  • In weaving welding where a V groove exists, the heat input distribution is an important factor that determines the defectiveness of the bead shape, undercut and over-lap. In this study, the amount of heat input, which is determined by the welding current, voltage, speed and weaving conditions is calculated through mathematical development and numerical methods. Furthermore, the heat input distribution as a two- dimensional heat source was observed when applied to each groove.

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A Study of Heat Input Distribution on the Surface during Torch Weaving in Gas Metal Arc Welding (가스 메탈 아크 용접에서 토치 위빙 중 표면 입열 분포 해석에 관한 연구)

  • 김용재;이세현
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.316-319
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    • 2001
  • In weaving welding where a V groove exists, the heat input distribution is an important factor that determines the defectiveness of the bead shape, undercut and over-lap. In this study, the amount of heat input, which is determined by the welding current, voltage, speed and weaving conditions is calculated through numerical methods. Furthermore, the heat input distribution as a two- dimensional heat source was observed when applied to each groove. Therefore, a heat input control algorithm is suggested to prevent the defects generated from undercut or over-lap, which was verified through an analysis of the heat input distribution.

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A study on the development of an arc sensor and its interface system for a welding robot (용접로봇을 위한 아크센서 및 인?이스 시스템 개발에 관한 연구)

  • 배강열;이지형;정창욱
    • Journal of Welding and Joining
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    • v.16 no.3
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    • pp.129-140
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    • 1998
  • An interface system was developed to offer the welding capability to a robot controller which had not any embedded function for arc welding before, and also an arc sensor algorithm was proposed for weld seam tracking of the welding robot. For the interface system between the robot controller and welding equipments, data communication software and interface connections were composed. The interface system was mae to correspond welding condition, correction data, operation sequence and current status with the robot controller by mutual had shaking and digital signal transfer. Graphic user interface program developed under the environment of windows made it easy to monitor data communication and operation status, and to control welding and sensing sequence. Arc sensing algorithm proposed in this study to compensate torch position error was based on a fuzzy logic with the variables of current difference and current differenced change at torch weaving extremities. The developed interface system could be successfully implemented in between welding equipments and the robot controller, and showed normal status and exact function in data and signal communication between the systems. The whole robot welding system was then examined to verify its welding and seam tracking capabilities in horizontal fillet, vertical fillet, and 3-dimensional fillet weldment. The experiments revealed sound weld bead shapes and also good seam tracing results.

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