• Title/Summary/Keyword: 접합모재

Search Result 183, Processing Time 0.04 seconds

Visualization of Welded Connections based on Shader for Virtual Welding Training (가상현실 용접 훈련을 위한 쉐이더 기반 특수효과 표현)

  • Oh, Soobin;Jo, Dongsik
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
    • /
    • 2019.05a
    • /
    • pp.479-481
    • /
    • 2019
  • In recent years, training systems in various industrial fields have been made using virtual reality (VR) technology and widely used in education. Virtual reality based training system is safe, there is no waste of material, and there are many advantages to be able to practice anytime and anywhere. For example, virtual reality welding training simulation system is widely used for field worker because it can perform actual joining of steel plate in immersive environment. At this time, realistic representation of the steel plate joint is important to maximize the effectiveness of the training, but existing techniques have limited the natural expression of the effect. In this study, we propose a method of visualizing joint effect based on shader in order to construct welding training system. The results of this study can be applied to the welding training system to improve the weld training effect to provide the user with high-quality visualization.

  • PDF

A Study on the Comparison of Brazed Joint of Zircaloy-4 with PVD-Be and Zr-Be Amorphous alloys as Filler Metals (PVD-Be와 비정질 Zr-Be 합금을 용가재로 사용한 Zircaloy-4의 브레이징 접합부의 비교 연구)

  • Hwang, Yong-Hwa;Kim, Jae-Yong;Lee, Hyung-Kwon;Koh, Jin-Hyun;Oh, Se-Yong
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.7 no.2
    • /
    • pp.113-119
    • /
    • 2006
  • Brazing is an important manufacturing process in the fabrication of Heavy Water Reactor fuel rods, in which bearing and spacer pads are joined to Zircaloy-4 cladding tubes. The physical vapor deposition(PVD) technique is currently used to deposit metallic Be on the surfaces of pads as a filler metal. Amorphous Zr-Be binary alloys which are manufactured by rapid solidification process are under developing to substitute the conventional PVD-Be coating. In the present study, brazed joint with PVD and amorphous alloys of $Zr_{1-x}Be_{x}(0.3{\le}x{\le}0.5)$ as filler metals are compared by mechanism, microstructure and hardness. The thickness of brazed joint with amorphous alloys became much smaller than that of PVD-Be. The erosion of base metal did not occur in the brazed joint with amorphous alloys. The brazing mechanism for PVD-Be seems to be Be diffusion into Zr-4 with capillary action resulting from eutectic reaction while that for amorphous alloys are associated with the liquid phase formation in the brazed joint. The brazed joint microstructure with PVD-Be consists of dendrite while that with amorphous alloys is globular. The $Zr_{0.7}Be_{0.3}$ alloy shows the smooth interface with little erosion in the base metal and is recommended a most suitable brazing filler metal for Zircaloy-4.

  • PDF

Study on the Fracture Toughness of Base Metal and Weldment of Natural Gas Pipeline (천연가스배관 모재 및 용접부의 파괴인성에 관한 연구)

  • 김철만;백종현;정현호;김우식
    • Proceedings of the KWS Conference
    • /
    • 1997.10a
    • /
    • pp.40-42
    • /
    • 1997
  • 1)X65배관의 심 및 원주용접 부분과 X42배관의 원주용접 부분에 대하여, 노치 위치 및 시험온도 변화에 따른 충격 및 파뢰인성 변화를 비교, 분석하였다. 2) 모든 경우에 용착금속부에 대한 충격 및 파괴인성이 가장 취약하게 나타났다.

  • PDF

Effect of welding quality to wear of Contact Tips for GMA Welding (GMA용접 동안 콘택트팁 마모가 용접품질에 미치는 영향)

  • 김남훈;김희진;유회수
    • Proceedings of the KWS Conference
    • /
    • 2004.05a
    • /
    • pp.188-190
    • /
    • 2004
  • 가스메탈아크용접(gas metal arc welding, 이하 'GMA용접' 이라고 함)은 용가재로서 소모전극 와이어를 일정한 속도로 용융지에 공급하면서 와이어 선단과 모재 사이에서 전기적 아크가 발생되도록 하는 용접법이다. (중략)

  • PDF