A Study on an Optimization of Welding Process Parameters by using an Analytic Solution  for the Welding Angular Distortion

Lee, Se-Hean

Journal of KWJS 2003;21(7):42-48.
Published online December 25, 2003.

[연구논문] 용접 각 변형량 해석해를 이용한 용접 공정변수 최적화에 관한 연구

A Study on an Optimization of Welding Process Parameters by using an Analytic Solution for the Welding Angular Distortion

Se-Hean Lee

Abstract

Welding distortion is a current issue in many industrial parts, especially for heavy industry such as shipbuilding, plant industry. The welding process has many processing parameters influencing welding angular distortion such as heat input power, welding speed, gas flow rate, plate thickness and the welded material properties, etc. In this work, the conventional local minimization concept was applied to find a set of optimum welding process parameters, consisted of welding speed, plate thickness and heat input, for a minimum angular distortion. An analytic solution for welding angular distortion, which is based on laminated plate theory, was also applied to investigate and optimize the welding process parameters. The optimized process parameters and the angular distortion for various parametric conditions could be easily found by using the local minimum concept.