Rolled stainless steel object and manufacturing method therefor
US10744553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2015 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21B3/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A rolled stainless steel object has surface with a raised and indented pattern including a random juxtaposition of at least two types of polygons. Each of the polygons has at least three sides, and is made up of substantially parallel rectilinear scratches, having a depth of from 5 to 30 μm separated by ridge lines, the axes of which are from 0.1 to 0.3 mm from each other, and a Fourier transform spectral analysis of which, carried out on a square of at least 100 mm2, shows that they have an isotropy of at least 40% between the rolling direction and the sideways direction, and two adjacent preferred angular orientations of which scratches, from among the three main preferred angular orientations thereof, are spaced apart by a minimum of 20° and a maximum of 60°.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.