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JWJ > Volume 33(1); 2015 > Article
Journal of Welding and Joining 2015 February;33(1) :80-86.
Published online February 28, 2015.
doi:https://doi.org/10.5781/JWJ.2015.33.1.80
A study on the prediction of the angular distortion in line heating with high frequency induction heating
Dong-Hwan Park*, Hyung-Kook Jin**, Soung-Sig Park**, Sang-Beom Shin**
*Institute of e-Vehicle Technology, University of Ulsan, Ulsan 682-192, Korea
**Industrial Technology Institute, Hyundai Heavy Industries, Ulsan 682-060, Korea
Correspondence: Dong-Hwan Park  Email: dhpark@ulsan.ac.kr
  Published online February 28, 2015
ABSTRACT
The purpose of this study is to establish the predictive method of the angular distortion caused by the line heating process with high frequency induction heating. In order to do it, the heat input model for the high frequency induction heating system was established through comparing the temperature evaluation results obtained by both FEA and experiment. The critical heating conditions to prevent the degradation of the work piece with various thicknesses were identified by FEA and microstructure test results. Under the critical heating conditions, the extensive line heating tests were performed. According to the test results, it was found that the angular distortion behavior of the heated plates could be defined as the function of heat intensity and the rigidity of heated plate. In addition, it was clarified that the angular distortion strongly depended on the size of test specimen such as the length and the width of the heated plate. Based on these results, the predictive equation for the angular distortion was established with the function of heat intensity, bending rigidity and size of heated plate.
Keywords: Line heating | High frequency induction heating | Angular distortion | Size effect
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