Girth welded joint of steel pipe
US-2024353033-A1 · Oct 24, 2024 · US
Ni—Fe—Cr alloy and engine valve welded with the same alloy
US9340856B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9340856-B2 |
| Application number | US-201214115268-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 15, 2012 |
| Priority date | Nov 28, 2011 |
| Publication date | May 17, 2016 |
| Grant date | May 17, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A hard-facing alloy having impact resistance, wear resistance and hot corrosion resistance and containing Fe which is a bountiful resource and inexpensive is provided. Provided are: a Ni—Fe—Cr alloy containing 0 to 20.0 mass % of Mo, 8.0 to 40.0 mass % of W, 20.0 to 40.0 mass % of a total amount of Mo and W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr and 1.0 to 2.5 mass % of B, and the remainder being Ni and unavoidable impurities; and an engine valve welded with the same alloy. The above Ni—Fe—Cr alloy can further contain 15 mass % or less of a total amount of elements selected from Co, Mn, Cu, Si and C, in such cases, 15.0 mass % or less of Co, 5.0 mass % or less of each of Mn and Cu, 2.0 mass % or less of Si and 0.5 mass % or less of C are preferred.
First claim
Opening claim text (preview).
The invention claimed is: 1. An engine valve welded or coated with a Ni—Fe—Cr alloy consisting of 0 to 20.0 mass % of Mo, 8.0 to 40.0 mass % of W, 20.0 to 40.0 mass % of a total amount of Mo and W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr, 1.0 to 2.5 mass % of B, 10.4 mass % or more of Ni, and unavoidable impurities. 2. The engine valve according to claim 1 , wherein at least a seat surface coming into contact with a seat insert is welded or coated with said Ni—Fe—Cr alloy. 3. An engine valve welded or coated with a Ni—Fe—Cr alloy consisting of 0 to 20.0 mass % of Mo, 8.0 to 40.0 mass % of W, 20.0 to 40.0 mass % of a total amount of Mo and W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr, 1.0 to 2.5 mass % of B, at least one element selected from Co, Mn, Si and C, 10.4 mass % or more of Ni, and unavoidable impurities, wherein a total amount of Co, Mn, Si and C is 15 mass % or less, the content of Co is 15.0 mass % or less, the content of Mn is 5.0 mass % or less, the content of Si is 2.0 mass % or less, and the content of C is 0.5 mass % or less. 4. The engine valve according to claim 3 , wherein at least a seat surface coming into contact with a seat insert is welded or coated with said Ni—Fe—Cr alloy. 5. An engine valve welded or coated with a Ni—Fe—Cr alloy consisting of 22.0 to 40.0 mass % of W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr, 1.0 to 2.5 mass % of B, 10.4 mass % or more of Ni, and unavoidable impurities. 6. The engine valve according to claim 5 , wherein at least a seat surface coming into contact with a seat insert is welded or coated with said Ni—Fe—Cr alloy. 7. An engine valve welded or coated with a Ni—Fe—Cr alloy consisting of 22.0 to 40.0 mass % of W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr, 1.0 to 2.5 mass % of B, at least one element selected from Co, Mn, Si and C, 10.4 mass % or more of Ni, and unavoidable impurities, wherein a total amount of Co, Mn, Si and C is 15 mass % or less, the content of Co is 15.0 mass % or less, the content of Mn is 5.0 mass % or less, the content of Si is 2.0 mass % or less, and the content of C is 0.5 mass % or less. 8. The engine valve according to claim 7 , wherein at least a seat surface coming into contact with a seat insert is welded or coated with said Ni—Fe—Cr alloy. 9. A Ni—Fe—Cr alloy consisting of 22.0 to 40.0 mass % of W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr, 1.0 to 2.5 mass % of B, 10.4 mass % or more of Ni, and unavoidable impurities.
Assignees
Inventors
Classifications
Alternative base metals from diverse categories · CPC title
Co- or Ni-base component next to Fe-base component · CPC title
Containing more than 10% nonferrous elements [e.g., high alloy, stainless] · CPC title
Fe as the principal constituent · CPC title
Ni as the principal constituent · CPC title
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Frequently asked questions
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- What does patent US9340856B2 cover?
- A hard-facing alloy having impact resistance, wear resistance and hot corrosion resistance and containing Fe which is a bountiful resource and inexpensive is provided. Provided are: a Ni—Fe—Cr alloy containing 0 to 20.0 mass % of Mo, 8.0 to 40.0 mass % of W, 20.0 to 40.0 mass % of a total amount of Mo and W, 20.0 to 50.0 mass % of Fe, 12.0 to 36.0 mass % of Cr and 1.0 to 2.5 mass % of B, and th…
- Who is the assignee on this patent?
- Fukuda Metal Foil Powder, Nittan Valva
- What technology area does this patent fall under?
- Primary CPC classification C22C38/44. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 17 2016 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).