Process Parameter Effect on Deformation of a V-groove Thin Plate for FCAW and EGW

Han, Juho; Jeon, Jaeseung; Park, Chulsung; Oh, Chongin; Yun, Jinoh; Lee, Jeongsoo

doi:2013.31.1.65

J Weld Join > Volume 31(1); 2013 > Article

Research Paper

Journal of KWJS 2013;31(1):65-70.
DOI: https://doi.org/10.5781/KWJS.2013.31.1.65 Published online June 5, 2013.

Process Parameter Effect on Deformation of a V-groove Thin Plate for FCAW and EGW

Juho Han, Jaeseung Jeon, Chulsung Park, Chongin Oh, Jinoh Yun, Jeongsoo Lee

Correspondence: Jeongsoo Lee,
Email: leejszz@hanjinsc.com

Abstract

Finite element analysis and welding experiments were performed to evaluate deformation aspect for Flux Cored Arc Welding(FCAW) and Electro Gas Welding(EGW). Numerical researches of FCAW and EGW were performed considering the difference of number of welding pass and welding direction to arc flow. To perform the numerical study of FCAW and EGW, number of welding pass and welding direction to arc flow were considered in the finite element model. FCAW process requires multi pass and its welding direction is vertical to welding torch. On the other hand, EGW process requires single pass and its welding direction is parallel to welding torch. The difference of welding direction and heat input was considered in the finite element analysis. In FCAW process, Goldak’s double ellipsoidal heat input model was adopted. In the EGW process, Hemi-spherical power density distribution was adopted. In the results of experiment and finite element analysis, angular deformation of FCAW process is larger than that of EGW process.

Key Words: FCAW, EGW, Deformation, Finite element analysis, Goldak