Iron component and a manufacturing method therefor
US6780257B2 · kind B2 · utility
1Cited by
0References
6Claims
0Family size
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Key dates
| Filing date | Jan 17, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Jun 12, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1446
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A base plate of a stainless-steel body material formed by pressing is polished and cleared of burrs by means of an abrasive material that consists mainly of Fe2O3 in a polishing process. The polished base plate is heated to a heat treatment temperature for solid solution in a reducing atmosphere in a heat treatment process. In this heat treatment process, an oxide in the constituents of minute fragments of the abrasive material in the surface of the body material of the base plate is reduced to leave iron, which is dispersed into the body material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.