Three Dimensional Analysis of High Frequency Induction Welding of Steel Pipes With Impeder

Author:

Kim Hyun-Jung1,Youn Sung-Kie1

Affiliation:

1. Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, 373-1 Guseong-Dong, Yuseong-Gu, Daejeon 305-701, Republic of Korea

Abstract

High frequency induction welding is widely employed for longitudinal seam welding of small scale tubes and pipes due to its relatively high processing speed and efficiency. This research is aimed at understanding the variables that affect the quality of the high frequency induction welding. The welding variables include the welding frequency, weld speed, vee angle, and tube thickness. Temperature distribution of the tube is calculated through three dimensional coupled electromagnetic and thermal finite element analysis. The skin and proximity effects are considered in the electromagnetic analysis. The influence of the impeder is also analyzed. The effects of the operating welding variables on the temperature distribution are investigated quantitatively by exhibiting the heat affected zone. The results explain the mechanism of significant enhancement of welding efficiency when the impeder is used. Not only good weld state can be obtained but also overheated edge can be avoided by understating the effect of welding variables. Suggestions are made for the better induction welding conditions.

Publisher

ASME International

Subject

Industrial and Manufacturing Engineering,Computer Science Applications,Mechanical Engineering,Control and Systems Engineering

Reference12 articles.

1. A Study of the Key Parameters of High Frequency Welding;Scott

2. The Effects of Frequency in High Frequency Welding;Scott

3. Scott, P. F. , 1996, “High Frequency Welding of Low Carbon Steel Tube,” Thermatool Corporation Technical Papers.

4. Scott, P. F. , “Modern Methods of High Frequency Welding Used to Produce Consistent Quality,” Thermatool Corporation Technical Papers.

5. Temperature Distribution in the Weld Vee Cross Section;Asperheim;Tube International

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