GB654922A - Improvements in and relating to machine parts - Google Patents
Improvements in and relating to machine partsInfo
- Publication number
- GB654922A GB654922A GB431744A GB431744A GB654922A GB 654922 A GB654922 A GB 654922A GB 431744 A GB431744 A GB 431744A GB 431744 A GB431744 A GB 431744A GB 654922 A GB654922 A GB 654922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- per cent
- mentioned body
- welded
- balance
- steel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
Machine parts which when in use are subjected to high temperatures and which comprise a body more nearly adjacent the source of high temperature welded to a body situated more remotely from the said source, have the first mentioned body formed of an alloy of the following composition: C 0.08-1.0 per cent; Si 0.1-2.0 per cent; Mn 0.1-5 per cent; Ni 5-30 per cent; Cr 5-21 per cent; W and/or Mo 1.5-15 per cent; Nb 0.25-15 per cent, the Nb being partly replaceable by Ta, the minimum quantity of Nb being 0.05 per cent when Ta is present, with the optional presence of V in substitution for part of the Nb or Ta and Nb, the quantity of Nb or Ta and Nb not falling below 1.0 per cent when V is present; Co 3-30 per cent; N 0-0.3 per cent; Cu 0-6 per cent; Fe not less than 33 per cent and constituting, with unavoidable impurities, the balance, the total content of Ni and Cr being not less than 24 per cent. A steel of like composition may be used in which Ti wholly or partially replaces Nb. The second mentioned body is formed of a steel of the following composition: C 0.03-0.25 per cent; Si 0.2-2 per cent; Cr 15-25 per cent; Ni 7-16 per cent; one or more of the metals Nb, V, Zr, Ta 5-30 times the weight of the carbon content; Fe, and unavoidable impurities, the balance. The first mentioned body may be formed with a boss to which the second mentioned body is welded, e.g. by flash butt welding. The welded machine part may then be stress relieved by heating at about 500 DEG C. The production of valves for high duty internal combustion engines, and rotors and bearing shafts for high temperature gas turbines and compressors is referred to. Specifications 647,701 and 653,311 are referred to.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB431744A GB654922A (en) | 1944-03-08 | 1944-03-08 | Improvements in and relating to machine parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB431744A GB654922A (en) | 1944-03-08 | 1944-03-08 | Improvements in and relating to machine parts |
Publications (1)
Publication Number | Publication Date |
---|---|
GB654922A true GB654922A (en) | 1951-07-04 |
Family
ID=9774893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB431744A Expired GB654922A (en) | 1944-03-08 | 1944-03-08 | Improvements in and relating to machine parts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB654922A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113755766A (en) * | 2021-08-16 | 2021-12-07 | 钢铁研究总院 | Large-size long-life high-carbon bearing steel bar and preparation method thereof |
-
1944
- 1944-03-08 GB GB431744A patent/GB654922A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113755766A (en) * | 2021-08-16 | 2021-12-07 | 钢铁研究总院 | Large-size long-life high-carbon bearing steel bar and preparation method thereof |
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