Heating method, heating apparatus and method of manufacturing press-molded article
US10638544B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2015 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Aug 26, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2221/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.