GB2385862A - A Cast Austenitic Manganese-Nickel Steel - Google Patents

A Cast Austenitic Manganese-Nickel Steel Download PDF

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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Withdrawn
Application number
GB0303395A
Other versions
GB0303395D0 (en
Inventor
Michael Charles Westoby
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Balfour Beatty Rail Residuary Ltd
Original Assignee
Edgar Allen Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Edgar Allen Ltd filed Critical Edgar Allen Ltd
Publication of GB0303395D0 publication Critical patent/GB0303395D0/en
Publication of GB2385862A publication Critical patent/GB2385862A/en
Withdrawn legal-status Critical Current

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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

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  • 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)

  1. 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. 2. A steel as claimed in Claim 1, which is fully solution treated.
  3. 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. 3x
    balance Fe, which has been fully solution treated.
GB0303395A 2002-02-27 2003-02-14 A Cast Austenitic Manganese-Nickel Steel Withdrawn GB2385862A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
GB0303395D0 (en) 2003-03-19
GB0204558D0 (en) 2002-04-10

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WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)