Si-killed steel wire rod and spring
US9290822B2 · kind B2 · utility
0Cited by
2References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2007 |
| Grant date | Mar 22, 2016 |
| Priority date | — |
| Expiry date | Dec 26, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/46
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from such steel wire rod are provided. In the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-35%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and BaO: 0.2-20% respectively, and total content of (CaO+MgO) is 3% or above.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.