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Journal of KWJS 2006;24(3):34-41.
Published online August 22, 2006.
CD 스터드 용접의 해석 및 결함 분석Part 1 : 공정 모델링과 해석
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Analysis of CD Stud Welding Process and Defects - Part 1: Process Modeling and Analysis
Hyun-Seok Oh, Choong-D. Yoo
Abstract
  The CD (Capacitor Discharge) stud welding utilizes the arc heat and pressure to attach the stud to the workpiece, which consists of the arc ignition, arcing and pressure welding stages. In order to predict the dynamic behavior of the CD stud welding process, mechanical and electrical models are employed in this work. While the mechanical model estimates the duration of each stage, the electrical model predicts the voltage and current waveforms using the RLC circuit. Effects of process parameters such as the electric components and spring force are analyzed through simulation. It is found that the contact resistance and gap between the stud and base metal influence the tip fusing and arcing duration. The calculated results showed reasonably good agreements with the experiment results.
Key Words: CD stud welding, Mechanical and electrical modeling, RLC circuit


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