To suppress a variation in electrically heated temperature of a platy workpiece in a relatively simple manner even when a platy workpiece formed into a non-rectangular shape is heated upon heating the platy workpiece by electrical heating.
There is provided an electrical heating method by which the workpiece is heated by attaching an electrode to the platy workpiece, and the method includes the steps of: preparing the platy workpiece W1 and an auxiliary heating member W2; superposing the platy workpiece and the auxiliary heating member one on another; attaching a pair of electrodes 11 to the platy workpiece and the auxiliary heating member; and causing electric current to flow between both electrodes. The platy workpiece and the auxiliary heating member are prepared and superposed one on another so that the sum total of the product of the cross sectional area of the platy workpiece in a predetermined cross section orthogonal to the direction of the electric current flow between both electrodes 11 and the reciprocal of the electrical resistivity of the platy workpiece and the product of the cross sectional area of the auxiliary heating member in the predetermined cross section and the reciprocal of the electrical resistivity of the auxiliary heating member is approximately constant.
| WO/2013/133164 | PROCESS FOR PRODUCING PRESS-FORMED PRODUCT, AND PRESS-FORMED PRODUCT |
| JP2005138112 | PRESS WORKING METHOD |
MIZOGAMI TATSUSHI
SAITO NAOKO
KAMIOKA TOSHITSUGU
| JP2013111582A | 2013-06-10 | |||
| JP2011183418A | 2011-09-22 |
Mitsuo Tanaka
Fukuoka Masaaki
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