JWJ > Volume 24(3); 2006 > Article
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Journal of KWJS 2006 June;24(3)
:34-41.
Published online August 22, 2006.
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Analysis of CD Stud Welding Process and Defects - Part 1: Process Modeling and Analysis |
Hyun-Seok Oh, Choong-D. Yoo |
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Correspondence:
Published online August 22, 2006
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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. |
Keywords:
CD stud welding;Mechanical and electrical modeling;RLC circuit
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