Spring steel with excellent fatigue resistance and method of manufacturing the same
US-10350676-B2 · Jul 16, 2019 · US
Method of adding high vapor pressure magnesium to steel liquid and apparatus for performing the method
US9670559B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9670559-B2 |
| Application number | US-201514791518-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 6, 2015 |
| Priority date | Jul 6, 2015 |
| Publication date | Jun 6, 2017 |
| Grant date | Jun 6, 2017 |
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- Title
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- Abstract
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Abstract
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An apparatus of adding high vapor pressure magnesium to a steel liquid, includes a magnesium additive device and a tube furnace. The magnesium additive device includes a storage barrel, a conveying pipe, a control valve, and an insertion tube. A method of adding high vapor pressure magnesium to a steel liquid, includes placing the magnesium additive device in the tube furnace, and delivering pure magnesium particles into the storage barrel. When the temperature at the mediate lower position of the conveying pipe is increased to reach a preset value, the control valve is opened to pour the pure magnesium particles into the conveying pipe to form a magnesium vapor, and an argon regulating valve is opened to introduce the argon into the conveying pipe so as to add the magnesium vapor to a steel liquid by carrying of the argon.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of adding high vapor pressure magnesium to a steel liquid, comprising: placing a magnesium additive device in a tube furnace; and adding pure magnesium particles when a temperature at a mediate lower position of the magnesium additive device is increased to reach a preset value, so that the pure magnesium particles form a magnesium vapor which is carried into a steel liquid by argon. 2. The method of claim 1 , further comprising providing an argon regulating valve to introduce the argon whose flow rate is at the range of 0.5-1.5 L/min. 3. The method of claim 1 , wherein the magnesium vapor is carried into the steel liquid by the argon whose flow rate is at the range of 0.2-0.5 L/min. 4. The method of claim 1 , wherein each of the pure magnesium particles has a diameter of 0.5-2 mm.
Assignees
Inventors
Classifications
by injecting powdered material · CPC title
- C21C7/0006Primary
Adding metallic additives · CPC title
Deoxidising, e.g. killing · CPC title
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- What does patent US9670559B2 cover?
- An apparatus of adding high vapor pressure magnesium to a steel liquid, includes a magnesium additive device and a tube furnace. The magnesium additive device includes a storage barrel, a conveying pipe, a control valve, and an insertion tube. A method of adding high vapor pressure magnesium to a steel liquid, includes placing the magnesium additive device in the tube furnace, and delivering pu…
- Who is the assignee on this patent?
- Univ Nat Cheng Kung
- What technology area does this patent fall under?
- Primary CPC classification C21C7/0006. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 06 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). 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).