GB2385862A - A Cast Austenitic Manganese-Nickel Steel - Google Patents
A Cast Austenitic Manganese-Nickel Steel Download PDFInfo
- Publication number
- GB2385862A GB2385862A GB0303395A GB0303395A GB2385862A GB 2385862 A GB2385862 A GB 2385862A GB 0303395 A GB0303395 A GB 0303395A GB 0303395 A GB0303395 A GB 0303395A GB 2385862 A GB2385862 A GB 2385862A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steel
- austenitic manganese
- cast
- nickel steel
- cast austenitic
- 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.)
- Withdrawn
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
- C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
A cast austenitic manganese-nickel steel of percentage composition by weight: ```C 0.85-1.20 ```Mn 9.0-13.5 ```Ni 2.75-4.5 ```And optionally Si, S, P, Cr, Mo, Ni, Ti and V ```Balance Fe The cast steel may be solution treated and used in the manufacture or repair of railway crossings.
Description
<Desc/Clms Page number 1>
Title of the Invention
Railway Crossings, etc Field of the Invention
This invention relates to an austenitic manganese steel and to railway crossings cast from such steel.
Background of the Invention
It is well known that in Railway permanent way, at locations of high anticipated wear/impact, such as a crossing, the benefits to be gained from using a highly wear resistant austenitic manganese steels, however one of the penalties of using these work hardening steels is their susceptibility to early deformation, during initial service, due to their being supplied"soft"and"hardening up", under traffic. During this hardening up period in service, the running surface plastically deforms and some metal flow occurs, leading to the characteristic lipping along the running edges and some loss of nose height occurs. If this lipped metal is not removed on a routine basis, by regular maintenance grinding, it can be a source of cracking, RCF, that can shorten the life of the crossing, leading to its replacement.
Object of the Invention
A basic object of the invention is the provision of an improved steel and railway crossing cast from such steel that is less susceptible to early deformation, leading to less maintenance grinding whilst in service and prolonging the crossings use.
<Desc/Clms Page number 2>
Summary of a First Aspect of the Invention
According to a first aspect of the invention, there is provided a cast austenitic manganese nickel steel of percentage composition by weight :
C Mn Si S P Cr Mo Ni Ti V 0.85/1. 20 90/13. 5 1.00x 0.04x 0.05x 2. 0x 0.75x 2.75/4. 5 0. 1x 0.3x balance Fe.
Preferably, the steel is fully solution treated, to impart maximum toughness.
Summary of a Second Aspect of the Invention
According to a second aspect of the invention, there is provided a railway crossing produced in the cast, austenitic manganese steel of the first aspect, which has been fully solution treated.
Advantages of the Invention
The heat treated cast Mn Ni crossing, can then be fishplated to rolled rail or possibly flash butt welded to the rolled rail, via use of a dissimilar joint. The introduction of nickel in the range specified, in an austenitic manganese steel has been found to accelerate the rate of work hardening in service, thereby producing a railway crossing that is less prone to deformation In early use than prior art proposals, and, consequently, a crossing requiring less maintenance than prior art proposals, whilst prolonging the service life of a crossing compared with prior art proposals.
Claims (3)
- CLAIMS 1. A cast austenitic manganese nickel steel of percentage composition by weight:C Mn Si S P Cr Mo Ni Ti V 0.85/1. 20 9.0/13. 5 1. 00x 0.04x 0.05x 2. 0x 0.75x 2.75/4. 5 O. lx 0.3x balance Fe.
- 2. A steel as claimed in Claim 1, which is fully solution treated.
- 3. A railway crossing produced in the cast, austenitic manganese steel of percentage composition by weight:C Mn Si S P Cr Mo Ni Ti V 0.85/1. 20 9.0/13. 5 1.00x 0.04x 0. 05x 2. 0x 0. 75x 2.75/4. 5 O. 1x 0. 3xbalance Fe, which has been fully solution treated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0204558A GB0204558D0 (en) | 2002-02-27 | 2002-02-27 | Railway crossings, etc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0303395D0 GB0303395D0 (en) | 2003-03-19 |
| GB2385862A true GB2385862A (en) | 2003-09-03 |
Family
ID=9931864
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0204558A Ceased GB0204558D0 (en) | 2002-02-27 | 2002-02-27 | Railway crossings, etc |
| GB0303395A Withdrawn GB2385862A (en) | 2002-02-27 | 2003-02-14 | A Cast Austenitic Manganese-Nickel Steel |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0204558A Ceased GB0204558D0 (en) | 2002-02-27 | 2002-02-27 | Railway crossings, etc |
Country Status (1)
| Country | Link |
|---|---|
| GB (2) | GB0204558D0 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013110798A1 (en) * | 2012-01-25 | 2013-08-01 | Tata Steel Uk Ltd | Steel for producing parts for railway, railway crossings and switches and method for producing said parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2026468A (en) * | 1934-12-31 | 1935-12-31 | Taylor Wharton Iron & Steel Co | Weldrod |
| US2038178A (en) * | 1935-06-07 | 1936-04-21 | Lincoln Electric Co | Electric arc welding |
| US4302248A (en) * | 1978-07-04 | 1981-11-24 | Kobe Steel, Limited | High manganese non-magnetic steel with excellent weldability and machinability |
| EP1067203A1 (en) * | 1999-07-07 | 2001-01-10 | Usinor | Process of manufacturing iron-carbon-manganese alloy strips and strips obtained thereby |
-
2002
- 2002-02-27 GB GB0204558A patent/GB0204558D0/en not_active Ceased
-
2003
- 2003-02-14 GB GB0303395A patent/GB2385862A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2026468A (en) * | 1934-12-31 | 1935-12-31 | Taylor Wharton Iron & Steel Co | Weldrod |
| US2038178A (en) * | 1935-06-07 | 1936-04-21 | Lincoln Electric Co | Electric arc welding |
| US4302248A (en) * | 1978-07-04 | 1981-11-24 | Kobe Steel, Limited | High manganese non-magnetic steel with excellent weldability and machinability |
| EP1067203A1 (en) * | 1999-07-07 | 2001-01-10 | Usinor | Process of manufacturing iron-carbon-manganese alloy strips and strips obtained thereby |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013110798A1 (en) * | 2012-01-25 | 2013-08-01 | Tata Steel Uk Ltd | Steel for producing parts for railway, railway crossings and switches and method for producing said parts |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0204558D0 (en) | 2002-04-10 |
| GB0303395D0 (en) | 2003-03-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |