Abstract: The present disclosure is applied to a press molding method for press-molding a workpiece by a press die composed of an upper die and a lower die while holding the workpiece by a die cushion. The press molding method according to the present disclosure includes pressing process, in which a press position at which the workpiece is pressed by the press die is gradually lowered while repeatedly pressing and releasing the workpiece by the press die a plurality of times until the press position reaches a bottom dead center, wherein in the pressing process, a holding force for holding the workpiece by the die cushion is controlled separately from a press molding force for press-molding the workpiece by the press die.

Abstract: An electrical heating device electrically heats a material to be heated by supplying an electric current flowing between a plurality of electrodes. The electrical heating device includes a temperature detection device which detects temperature information of a plurality of areas of the material to be heated, a supplemental heating device which heats each of the plurality of areas of the material to be heated, and a controller for controlling heating of the material to be heated. During the electrical heating, the controller controls, based on the temperature of each of the plurality of areas of the material to be heated detected by the temperature detection device, the supplemental heating device so that the supplemental heating device heats at least one area or all of areas having a temperature lower than the temperature of an area having a highest temperature among the plurality of areas.

Abstract: An electrical heating device electrically heats a material to be heated by supplying an electric current flowing between a plurality of electrodes. The electrical heating device includes temperature detection means for detecting temperature information of a plurality of areas of the material to be heated, supplemental heating means for heating each of the plurality of areas of the material to be heated, and control means for controlling heating of the material to be heated. During the electrical heating, the control means controls, based on the temperature of each of the plurality of areas of the material to be heated detected by the temperature detection means, the supplemental heating means so that the supplemental heating means heats at least one area or all of areas having a temperature lower than the temperature of an area having a highest temperature among the plurality of areas.