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http://dx.doi.org/10.9726/kspse.2016.20.5.046

A study on the Thermal Deformation of Line Heated TMCP and Normalizing Steel  

Kim, Jeong-Tae (DAEWOO Shipbuilding & Marine Engineering Corporation)
Lee, Kwang-Sung (Department of Energy and Mechanical Engineering, Gyeongsang National University)
Jeong, Hyo-Min (Department of Energy and Mechanical Engineering, Gyeongsang National University, Institute of Marine Industry)
Chung, Han-Shik (Department of Energy and Mechanical Engineering, Gyeongsang National University, Institute of Marine Industry)
Publication Information
Journal of Power System Engineering / v.20, no.5, 2016 , pp. 46-51 More about this Journal
Abstract
The TMCP steel has expanded in the marine structure during manufacturing process because of its excellent weld-ability and impact toughness. In the case of merchant ships, coverage of TMCP steel has been used widely on over DH36 Classifications material. The line heating process is applied to the outer surface of the steel plate for the shipbuilding. In this study, We compared between TMCP and normalizing steel for shipbuilding by analyzing some basic data through performing the natural cooling after the line heating. The experimental results show the angular misalignment changes in line heating. Heated surface of normalizing steel material expanded to $-0.3^{\circ}$ and reduced to $+0.2^{\circ}$ after cooling. And during cooling at $194^{\circ}C$ for 1,500 seconds, Angular Misalignment began from - direction to + direction, passed the critical point to the default at 2,200 seconds and did not take place any more at $103^{\circ}C$ after the 2,700 seconds. Angular Misalignment results of TMCP steels and Normalizing steel material show same angular misalignment lasted 1,200 seconds, TMCP steel has given more expansion and contraction angle which is $0.2^{\circ}$ than that of the Normalizing steel. Length difference between expansion and contraction is about 0.3 mm.
Keywords
Line Heating; Thermo-Mechanical Control Process; Normalizing; Thermal Deformation;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 C. D. Jang, D. E. Ko, B. I. Kim, and J. U. Park, 2001, "An Experimental Study of Characteristics of Plate Deformation by Heating Process", Journal of the Society of Naval Architects of Korea, Vol. 38, No. 2, pp. 62-70.
2 T. G. Kwon, S. H. Lee, and J. M. Han, 1999, "A Study Material Characteristic of Low Temperature Steel(FH-hrande) by Line heating Method", Journal of Welding and Joining, Welded Society 1999 Fall Academic announcement, pp. 160-162.
3 J. S. Park, J. Kim, J. G. Shin, C. M. Hyun, Y. C. Doh and K. H. Ko, 2008, "Plate Flattening Analysis in Line Heating Process using Bending Strains", Journal of The Society of Naval Architects of Korea, Vol. 45, No. 4, pp. 417-425.   DOI
4 Y. H. Choi, Y. W. Lee and K. Choi, 2010, "Study on Temperature Distribution for Various Conditions of Moving Heating Source During Line Heating, Process", Journal of the Korean Society of Marine Engineering, Vol. 34, No. 5, pp. 617-624.   DOI
5 Y. K. Kim, Y. W. Kim and J. H. Kim, 2014, "Welding Residual Stress and Strength of Thick 9% Nickel Steel Plate", Journal of the Korean Society for Power System Engineering, Vol. 18, No. 4, pp. 85-90.   DOI
6 P. Biswas, N. R. Mandal and O. P. Sha, 2007, "Three-dimensional finite element prediction of transient thermal history and residual deformation duo to line heating", Proc. IMECHE, Vol. 221, pp. 17-30.
7 C. B. Lim, Y. G. Kweon, R. W. Chang and G. W. Um, 1990, "Fatigue Properties of welded Joints for TMCP Steels", Journal of the Korean Welding Society, Vol. 8, No. 2, pp. 40-52.
8 J. S. Lee, 1996, "Plate Forming Automation System of Steel Plates by Line Heating Method(II)", Journal of the Society of Naval Architects of Korea, Vol. 33, No. 3, pp. 81-93.
9 W. N. Yun, H. K. Park, M. S. Kang and J. S. Kim, 2009, "Investigation of the Coil Deformation of the Gas Turbine Generator Rotor Using Finite Element Analysis", Journal of the Korea society for power system engineering Vol. 13, No. 6, pp. 95-101.
10 C. D. Jang, S. I. Seo and D. E. Ko, 1997, "A Study on the Prediction of Deformations of Plates due to Line Heating Using a Simplified Thermal Elasto-Plastic Analysis Method", Journal of the Society of Naval Architects of Korea, Vol. 34, No. 3, pp. 104-112.
11 H. K. Kim and C. D. Jang, 2003, "Simulation of Line Heating by High Frequency Induction Heating", Journal of Ocean Engineering and Technology, Vol. 17, No. 1, pp. 80-85.
12 S. G. Park, W. D. Kim and J. G. Shin, 1997, "A Mechanical Information Model of Line heating Process using Artificial Neural Network", Journal of the Society of Naval Architects of Korea, Vol. 34, No. 1, pp. 122-129.
13 B. D. Oh, 2007, "General Welding", Human Resources Development Service of Korea, pp. 72-83.