Pages 181-187
The nature of physical phenomena which happen during the process of plate bending by line-heating have to be elucidated in order to make it possible to decide the procedure of line-heating without skilled workers. Among of the phenomena, the relationship between the heating conditions and the amount of heat transfer into the steel plate is not clarified. It is supposed that such relationship can be clarified by numerical heat transfer and fluid flow analysis, but it is difficult to establish the formalization of the heat-transfer coefficient. In this paper, spot-heating tests using acetylene gas and numerical analysis on heat transfer and fluid flow are performed, and a propitiate formalization of the heat-transfer coefficient for the analysis of line-heating process is found. From the results of numerical analysis, the characteristics of heat transfer between heating gas and the steel plate is investigated.
