Browse > Article
http://dx.doi.org/10.3744/SNAK.2019.56.2.128

A Study on the Concave Type Hull Plate Forming using Induction Heating System  

Hyun, Chung Min (Ship & Offshore Research Institute, Samsung Heavy Industries)
Kim, Dae Kyung (Ship & Offshore Research Institute, Samsung Heavy Industries)
Mun, Seung Hwan (Ship & Offshore Research Institute, Samsung Heavy Industries)
Park, Jung Seo (Ship & Offshore Research Institute, Samsung Heavy Industries)
Dohr, Kyu Won (Graduate School of Mechanical Engineering, Daegu University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.56, no.2, 2019 , pp. 128-134 More about this Journal
Abstract
In shipbuilding, accurate fabrication of curved hull plates is one of the most important steps, since the shape of ship hull, which is very critical in the overall performance of a ship, is a collection of such plates. The curved hull plates forming process requires a significant amount of time by skilled workers in shipbuilding. In general, the workers cause thermal distortion in the plate and forming initial shape using gas heat source. So shipbuilding companies need skilled workers who have long experience. To solve the problem, a lot of researchers tried to develop automation system for curved hull plates. In this paper, we propose automatic heating system with gantry robot, high frequency induction heater to replace the gas heat source and automatic measurement system. We apply the system to forming concave type plate that is actually used in ship manufacturing. In addition, a system was developed to automatically generate heating information, such as the heating location and the heating speed, for actual heating process. Then the system was applied to the actual heating material. It is shown that the proposed triangle heating pattern makes desired concave shape successfully. The induction heating system showed that it can be used for automation system of curved hull plates forming process replacing gas heat source.
Keywords
Concave type; Triangle heating; Hull forming; Induction heating; Automatic heating;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Bae, K.R., Yang, Y.S., Hyun, C.M., Won, S.H., & Cho, S.H., 2007. Derivation of simplified formulas to predict deformations of plate in steel forming process with induction heating. Journal of Society of Welding and Joining of Korea, 25(4), pp.396-402.
2 Horn, B.K.P, 1987, Closed-form solution of absolute orientation using unit quaternions. Journal of Optical Society of America, 4(4), pp.624-629.
3 Jang, C.D., Ko, D.E., Kim, B.I., & Park, J.U., 2001a, An experimental study of characteristics of plate deformation by heating process. Journal of the Society of Naval Architects of Korea, 38(2), pp.62-70.
4 Jang, C.D., Ko, D.E., Mun, S.C., & Seo, Y.R., 2001b, Simulation of plate deformation by triangle heating process. Journal of the Society of Naval Architects of Korea, 38(4), pp.66-74.
5 Jang, C.D., Ha, Y.S., & Ko, D.E., 2003, An improved inherent strain analysis for the prediction of plate deformations induced by line heating considering phase transformation of steel, 13th International Offshore and Polar Engineering Conference, 4, pp.147-152.
6 Kang, J.K., Lee, J.H., & Shin, J.G., 2000, Numerical analysis of induction heating for the application of line heating. Journal of the Society of Naval Architects of Korea, 37(3), pp.110-121.
7 Kim, H.K., 2002, Simulation of line heating by high frequency induction heating, Ph. D. Seoul National University, Korea
8 Kim, T.H., 2001, A study on the prediction of plate deformation by triangle heating using inherent strain method, M.S. Seoul National University, Korea.
9 Kim, Y.B., 2007, A determination of heating shape and position for triangle heating, M.S. Seoul National University, Korea.
10 Kim, Y.B., Park, J.S., Shin, J.G., Hyun, C.M., Kim, D.K., & Ko, K.H., 2009, The determination of heating shapes and locations for triangle heating. Journal of Manufacturing Science and Engineering, 131(2), 021007, ASME, April.   DOI
11 Ko, K.H, Park, J.S., & Shin, J.G., 2005, Towards automatic measurement and comparison of curved hull pieces in the line heating process, ICCAS2005, 19(1), pp.8-15.
12 Park, J.S., Shin, J.G., Hyun, C.M., Doh, Y.C,. & Ko, K. H., 2007. Development of automated line heating information extract system for fabrication of curved hull plates. International Conference on Computer Applications in Shipbuilding, pp.159-168.
13 Ueda. Y., Murakawa, H., Mohamed, R. A., Okumoto, Y. & Kamichika, R., 1994, Development of computer-aided process planning system for plate bending by line heating(report 2) - practice for plate bending in shipyard viewed from aspect of inherent strain, Journal of Ship Production, 10(4), pp.239-247.   DOI
14 Ryu, C. H., 2002, A consistent algorithm for unfolded flat shape of curved ship's hull shells by minimizing strain energy, Ph.D. Seoul National University, Korea.
15 Seo, Y. R., 2000, A simulation of plate deformation by triangular heating process, M.S. Seoul National University, Korea.
16 Shin. J.G, Ryu. C.H., Lee, J.H., & Kim, Y.D., 2003, A user-friendly, advanced line heating automation for accurate plate fabrication, Journal of Ship Production, 19(1), pp.8-15.   DOI
17 Terasaki, T., Mizukami, M., Nakatani, M. & Ohsawa, M., 2003, Effect of line heating factors on transverse shrinkage generated by triangle heating, Journal of the Society of Naval Architects of Japan, 193, pp.75-83.