Abstract
A modified mathematical model of heat source for rotating arc welding (RAW) process was developed for investigating the heat and temperature distribution. The characteristics of temperature field based on the complex welding motion trajectory were studied. In this work, a transient three-dimensional (3D) model was established and computed by a finite element analysis computer program MARC as well as its subroutine. In RAW process, the temperature changes in the style of stepladder. Moreover in the high temperature zone, there are multiple peak temperature points. These characteristics of temperature distribution are induced by the arc rotating which leads the repetitive heating or fusing during the welding process. In contrast with non-rotating arc (NRAW) process, the width of temperature distribution enlarges, and the peak temperature of weld pool decreases. Good agreement is shown between the computed results and experimental results of thermal cycle in RAW process. Copyright:
| Original language | English |
|---|---|
| Pages (from-to) | 57-62 |
| Number of pages | 6 |
| Journal | China Welding (English Edition) |
| Volume | 20 |
| Issue number | 3 |
| State | Published - Sep 2011 |
| Externally published | Yes |
Keywords
- Finite element analysis
- Rotating arc process
- Temperature distribution
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