Mixture, use of this mixture, and method for conditioning a slag located on a metal melt in a metallurgical vessel in iron and steel metallurgy
US-2017275714-A1 · Sep 28, 2017 · US
Si-killed steel wire rod and spring
US2016130674A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016130674-A1 |
| Application number | US-201514967520-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 14, 2015 |
| Priority date | Dec 28, 2006 |
| Publication date | May 12, 2016 |
| Grant date | — |
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Abstract
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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 SiO 2 : 30-90%, Al 2 O 3 : 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.
First claim
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1 . A Si-killed steel wire rod excellent in fatigue properties, wherein oxide-based inclusions present in the wire rod comprise in mass % SiO 2 : 30-90%, Al 2 O 3 : 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 the total content of (MgO+CaO) is 3% or above. 2 . The Si-killed steel wire rod as set forth in claim 1 , wherein oxide-based inclusions present in the wire rod further comprise Li 2 O in a range of 0.1-20%. 3 . The Si-killed steel wire rod as set forth in claim 1 , composed of steel comprising C: 1.2% or below (not inclusive of 0%), Si: 0.1-4.0%, Mn: 0.1-2.0%, and Al: 0.01% or below (not inclusive of 0%) respectively. 4 . The Si-killed steel wire rod as set forth in claim 3 , further comprising one or more elements selected from a group consisting of Cr, Ni, V, Nb, Mo, W, Cu, Ti, Co and a rare earth element. 5 . The Si-killed steel wire rod as set forth in claim 3 , wherein the balance is Fe and inevitable impurities. 6 . A spring obtained from the Si-killed steel wire rod as set forth in claim 1 .
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- What does patent US2016130674A1 cover?
- 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 SiO 2 : 30-90%, Al 2 O 3 : 2-35%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive o…
- Who is the assignee on this patent?
- Kobe Steel Ltd
- What technology area does this patent fall under?
- Primary CPC classification C21C7/06. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 12 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).