Process for producing a drawn wire made of stainless steel, in particular a wire for reinforcing tires, and wire obtained by the process
US6440579B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 18, 1998 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Feb 18, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12924
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Process for producing a drawn wire, in particular a wire for reinforcing tires, having a diameter of less than 0.3 mm by drawing a base wire rod having a diameter of greater than 5 mm or a predrawn base wire made of steel with the following composition by weight:carbon≦40×10−3%nitrogen≦40×10−3%,the carbon and nitrogen satisfying the relationship C+N≦50×10−3%,0.2%≦silicon≦1.0%,0.2%≦manganese≦5%,9%≦nickel≦12%,15%≦chromium≦20%,1.5%≦copper≦4%,sulfur≦10×10−3%,phosphorus<0.050%,40×10−4%≦total oxygen≦120×10−4%,0.1×10−4%≦aluminum≦20×10−4%,magnesium≦5×10−4%,0.1×10−4%≦calcium≦5×10−4%,titanium≦50×10−4%,impurities inherent in the manufacture,in which steel the inclusions of oxides have, in the form of a glassy mixture, the following proportions by weight:30%≦SiO2≦65%,5%≦MnO≦40%,1%≦CaO≦30%,0%≦MgO≦10%,3%≦Al2O3≦25%,0%≦Cr2O3≦10%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.