Infrared heating method, infrared heating and forming method of steel sheet and automobile component obtained thereby, and infrared heating furnace
US10519523B2 · kind B2 · utility
1Cited by
3References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 2014 |
| Grant date | Dec 31, 2019 |
| Priority date | — |
| Expiry date | Oct 29, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27D11/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An infrared heating method comprises: wholly infrared heating a steel sheet uniformly up to a temperature which is A3 point or above; and temperature distribution controlling, wherein, after the wholly infrared heating, partial lowering of a light intensity of infrared rays irradiated toward the steel sheet is performed to provide a first region having a temperature of A3 point or above and a second region having a temperature less than A1 point in the steel sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.