Heating method, heating apparatus and method of manufacturing press-molded article
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United States of America Patent
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Apr 28, 2020
Grant Date -
Jun 8, 2017
app pub date -
Jun 22, 2015
filing date -
Jun 24, 2014
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Abstract
A heating method, a heating apparatus, and a method of manufacturing a press-molded article using the heating method are provided. A pair of electrodes is arranged on a workpiece along a first direction. Each electrode has a length extending across a first heating area of the workpiece in the first direction. At least one of the electrodes is moved in the first heating area and along a second direction intersecting the first direction at a constant speed while applying electric current between the pair of electrodes to heat the first heating area by direct resistance heating. The electric current applied between the pair of electrodes is adjusted such that a heating temperature is adjusted for each segment into which the first heating area is divided so as to be side by side in the second direction.
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