The Prevention of The Longitudinal Deformation due to Fillet Welding by using Induction Heating

고주파가열에 의한 Built-up재의 용접종굽힘 변형방지

  • Park Jeong-Ung (Dept. of Civil Engineering, Chosun University) ;
  • Chang Kyong-Ho (Dept. of Civil & Environmental Engineering, Chungang University) ;
  • Lee Hae-Woo (Hanjin Heavy Industries, HHIC Technology Institute) ;
  • An Gyu-Baek (Welding Research Part of Samsung Heavy Industries)
  • Published : 2005.06.01

Abstract

Longitudinal deformation is produced by fillet welding during the fabrication of built-up beams and decreases productivity and quality because it needs an extra correcting process. The deformation is caused by welding moment, which is the value multiplied the welding shrinking farce by the distance from the neutral axis. This welding moment can be offset by generating a moment in the same magnitude and in an opposite direction by induction heating. The location and quantity of the induction heating are decided via experiments and simple equations. This study, first, clarifies the creation mechanism of the longitudinal deformation with FEM analysis. Then, we presents the preventive method of this deformation by induction heating basing on the mechanism and verifies its validity through analysis and experiments.

Keywords

References

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