Method of annealing metal member
US10370733B2 · kind B2 · utility
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12References
13Claims
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Key dates
| Filing date | Jan 22, 2013 |
| Grant date | Aug 6, 2019 |
| Priority date | — |
| Expiry date | Feb 10, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF27B2005/143
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of annealing a metal member includes: disposing a first heater in an inner space of a hollow cylindrical metal member having an inner peripheral surface provided with plural teeth protruding toward a central direction, the first heater radiating infrared light and being disposed so as to extend parallel to a direction of a central axis of the metal member; heating the metal member from the inner space with the first heater; and gradually cooling the metal member after heating.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.