A new approach to determining heating parameters suitable for hull plate forming by torch line heating

Authors

  • Thai Gia Tran NhaTrang University
  • Viet T. Doan Department of Naval Architecture, The Institute of Mechanical Engineering, Ho Chi Minh City University of Transport, 02 Vo Oanh Street, Ho Chi Minh City

DOI:

https://doi.org/10.3329/jname.v18i2.51412

Abstract

In shipbuilding, the process of forming flat metal plate into curved hull plates with compound shapes is very important and has greatly affected many economic and technical factors such as strength, quality, and aesthetics of the hull, construction cost and time, etc. Currently, the forming method of curved hull plates by line heating is used effectively and commonly in many shipyards, however, its main problem is very difficult to determine where and how much to heat on the flat metal plate to obtain the plate of a certain shape. In this article, a finite element model is established and adjusted based on the actual data to numerical simulate the process of forming hull plates by using flame torch line heating. Base on this, the suitable position and temperature for the heating lines in the forming process are determined to form a metal plate into hull plates with the exact desired shapes. This research has been applied for forming by torch line heating of two plates, denoted K1 and K10, in the bulb bow of a 20,000 DWT cargo ship, built at Camranh Shipyard in Vietnam with the deformation deviations between the actual and desired plate surfaces are within ± 3%.   

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Author Biography

Viet T. Doan, Department of Naval Architecture, The Institute of Mechanical Engineering, Ho Chi Minh City University of Transport, 02 Vo Oanh Street, Ho Chi Minh City

 

 

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Published

31.12.2021

How to Cite

Tran, T. G., & Doan, V. T. . (2021). A new approach to determining heating parameters suitable for hull plate forming by torch line heating. Journal of Naval Architecture and Marine Engineering, 18(2), 109–125. https://doi.org/10.3329/jname.v18i2.51412

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Articles