CN1363711A - XY30 steel and its application - Google Patents

XY30 steel and its application Download PDF

Info

Publication number
CN1363711A
CN1363711A CN01138833A CN01138833A CN1363711A CN 1363711 A CN1363711 A CN 1363711A CN 01138833 A CN01138833 A CN 01138833A CN 01138833 A CN01138833 A CN 01138833A CN 1363711 A CN1363711 A CN 1363711A
Authority
CN
China
Prior art keywords
steel
temperature
clamping plate
water
railway
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.)
Granted
Application number
CN01138833A
Other languages
Chinese (zh)
Other versions
CN1164786C (en
Inventor
宋仁祯
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CNB011388331A priority Critical patent/CN1164786C/en
Publication of CN1363711A publication Critical patent/CN1363711A/en
Priority to AU2002354151A priority patent/AU2002354151A1/en
Priority to PCT/CN2002/000889 priority patent/WO2003050357A1/en
Priority to US10/468,343 priority patent/US20040069858A1/en
Application granted granted Critical
Publication of CN1164786C publication Critical patent/CN1164786C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B11/00—Rail joints
    • E01B11/02—Dismountable rail joints
    • E01B11/10—Fishplates with parts supporting or surrounding the rail foot

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Metal Rolling (AREA)
  • Machines For Laying And Maintaining Railways (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Heat Treatment Of Articles (AREA)
  • Clamps And Clips (AREA)
  • Connection Of Plates (AREA)

Abstract

A XY30 steel for railway contains C (0.28-0.35%), Mn (1.30-1.50), Si (0.15-0.35), P (less than 0.030), S (less than 0.030), Mo (0.25-0.35) V (0.10-0.25), Al (0.015), Nb (0.05-0.10), Re (0.040-0.20) and Cu (less than 0.20). It is based on the high-Mn steel and features high low-temp strength and toughness.

Description

XY30 steel and application thereof
Technical field patent of the present invention relates to a kind of new steel grade with good low temperature intensity and flexible non-Ni high manganese steel---XY30 steel and application thereof.
Background technology XY30 steel of the present invention is developed with joint bar at the low temperature rail.The rail joint bar is the important accessory of railway, and technical feature is strict, the domestic iron mark that the Ministry of Railways formulates, TB/T2342.1～4-93, the employing B of carrying out after 1993 7Steel is done.
Its Chemical Composition is (%):
B 7Steel: C 0.50～0.62, Mn 0.50～0.80, Si 0.15～0.35, P＜0.045, S＜0.050.
Mechanical property is after this steel thermal treatment:
B 7Steel: tensile strength б b〉=785MPa, yield strength б s〉=520MPa, elongation δ s〉=9%, relative reduction in area 〉=20%, Brinell hardness HB 227～338,30 ° at clod wash angle are intact.
USS about the railway casting rail with the mechanical property of technical acceptance under the connector clamp slab regulation normal temperature is:
Tensile strength б b〉=690 MPa, yield strength б s〉=480MPa, elongation δ s〉=12%, relative reduction in area 〉=28%, clod wash angle d=3a, 180 ° are intact.
Domesticly in secular application in practice, prove B 7Steel is only applicable to use under the situation of normal temperature～-20 ℃, because China is vast in territory, regional difference variation is bigger, B 7Steel is easy fracture under cold condition, so fracture accident often takes place on trunk railway, has influenced the normal operation of traffic.At present, because the continuous speed-raising of railway is the demands for higher performance of rail with the connector clamp slab, B 7Steel no longer is suitable for the requirement of growing railway casting rail with the connector clamp slab.
Summary of the invention XY30 steel of the present invention is based on high mangaenese steel, reducing the element that influences low-temperature performance: under the situation of carbon, phosphorus, silicon, increased and eliminated the temper brittleness molybdenum that thermal treatment produces, and add an amount of trace element: vanadium, aluminium, Niobium and rare earth element improve the low-temperature performance of steel, and a kind of new steel grade that is applicable to that the growing railway casting rail of China requires with the connector clamp slab of succeeding in developing.
XY30 steel of the present invention is to smelt modified new steel grade rolling and that thermal treatment process obtains by chemical composition design, and it is characterized in that: the Chemical Composition of XY30 steel is (%):
C?0.28～0.35、Mn?1.30～1.50、Si?0.15～0.35、P＜0.030、S＜0.030、Mo?0.25～0.35、V?0.10～0.25、Al?0.015、Nb?0.05～0.10、Re?0.040～0.20、Cu＜0.20。
Thermal treatment process is:
(1), heating: at first will heat through the straight strap clamp slab material shove charge of the single multiple length after rolling, the steel temperature of coming out of the stove is 850～860 ℃;
(2), quench: the clamping plate steel after the punching quenches, and the water tank water temperature is 75～85 ℃, and high-temperature water is thick for the quenched martensite crystal grain of alleviating steel, and it is 830～850 ℃ that the clamping plate steel quenches into water temp, and the cool time is 43～48 seconds;
(3), tempering and cooling: when the clamping plate steel after the quenching was come out by the quenching water tank, the temperature of clamping plate steel was 600～640 ℃, and air cooling carries out auto-tempering on chain conveyor then, when below the steel temperature drop to 120 ℃, can enter cooling water tank, its water temperature is not limit, and the steel temperature is below 50 ℃ after the water outlet;
(4), cooled clamping plate steel carries out cold straightening, reconditioning processing, inspection packing.
XY30 steel of the present invention can be applicable to rail in high speed railway connector clamp slab.XY30 steel of the present invention is based on high mangaenese steel, reducing the element that influences low-temperature performance: under the situation of carbon, phosphorus, silicon, increased and eliminated the temper brittleness element aluminum that thermal treatment produces, and added an amount of trace element: vanadium, aluminium, Niobium and rare earth element improve the low-temperature performance of steel.Through the many places experiment, and utilize the rolling rail joint bar that is processed into of experiment steel ingot, warp is to sample detection
The mechanical property of XY30 steel in the time of+14 ℃:
Tensile strength б b〉=785MPa, yield strength б s〉=520MPa, elongation δ s〉=13%, relative reduction in area 〉=30%, bending angle d=3a, 180 good, HB=230～388;
The mechanical property of XY30 steel in the time of-40 ℃:
Tensile strength б b〉=730MPa, yield strength б s〉=520MPa, elongation δ s〉=13%, relative reduction in area 〉=30%, bending angle d=3a, 180 ° of good, ballistic work Akv (vertically) 〉=25J.Experimental results show that the XY30 product made from steel is functional under normal temperature, low temperature condition, is a kind of new steel grade that is applicable to that the growing rail in high speed railway of China requires with the connector clamp slab.
Embodiment XY30 steel of the present invention is to smelt new steel grade rolling and that thermal treatment process obtains by chemical composition design, has formed three groups of material prescriptions at the performance of element when trial-production, and the chemical ingredients of this three assembly side is (%):
(1), C 0.28, Mn 1.30, Si 0.15, P＜0.030, S＜0.030, Mo 0.25, V 0.10, Al 0.015, Nb 0.05, Re 0.04, Cu＜0.20.
(2), C 0.31, Mn 1.40, Si 0.22, P＜0.030, S＜0.030, Mo 0.29, V 0.16, Al 0.015, Nb 0.06, Re 0.10, Cu＜0.20.
(3), C 0.35, Mn 1.50, Si 0.35, P＜0.030, S＜0.030, Mo 0.35, V 0.25, Al 0.015, Nb 0.10, Re 0.20, Cu＜0.20.
Every assembly side produces 2 60kg steel ingots altogether, is swaged into bloom slab and is rolled into the vertical bar of rail with joint bar, cuts into single multiple length joint bar sample again and heat-treats.
The thermal treatment process of selecting for use is:
(1), heating: at first will heat through the straight strap clamp slab material shove charge of the single multiple length after rolling, the steel temperature of coming out of the stove is 860 ℃; Punching: the clamping plate steel carries out punching, makes railway casting rail connector clamp slab;
(2), quench: the clamping plate steel after the punching quenches, and the water tank water temperature is 80 ℃, and high-temperature water is thick for the quenched martensite crystal grain of alleviating steel, and it is 840 ℃ that the clamping plate steel quenches into water temp, and the cool time is 45 seconds;
(3), tempering and cooling: when the clamping plate steel after the quenching was come out by the quenching water tank, the temperature of clamping plate steel was 620 ℃, and air cooling carries out auto-tempering then.
XY30 steel of the present invention detects through sending " Ministry of Railways product quality supervision and inspection central metal Chemical Analysis station " through repeatedly testing the rolling railway track joint bar that is processed into,
The mechanical property of XY30 steel in the time of+14 ℃:
Tensile strength б b〉=785MPa, yield strength б s〉=520MPa, elongation δ s〉=13%, relative reduction in area 〉=30%, bending angle d=3a, 180 ° are good;
The mechanical property of XY30 steel in the time of-40 ℃:
Tensile strength б b〉=730MPa, yield strength б s〉=520MPa, elongation δ s〉=13%, relative reduction in area 〉=30%, in the time of-40 ℃ good, the ballistic work Akv (vertically) 〉=25J of bending angle d=3a, 180 °.Bending angle d=3a, 180 ° of good, ballistic work Akv (vertically) 〉=20J in the time of-50 ℃.Experimental results show that the XY30 product made from steel is functional under normal temperature, low temperature condition, is a kind of new steel grade that is applicable to that the growing rail in high speed railway of China requires with the connector clamp slab.The XY30 steel also can be applicable to other low temperature railway casting: the reinforcing bar of using as bolt, railway spike, pull bar, concrete sleeper, locomotive, for motor vehicle web member, rod member, axle class part or the like.

Claims (2)

1, a kind of XY30 steel is to smelt modified new steel grade rolling and that thermal treatment process obtains by chemical composition design, and it is characterized in that: its Chemical Composition is (%):
C?0.28～0.35、Mn?1.30～1.50、Si?0.15～0.35、P＜0.030、S＜0.030、Mo?0.25～0.35、V?0.10～0.25、Al?0.015、Nb?0.05～0.10、Re?0.040～0.20、Cu＜0.20。
Thermal treatment process is:
(1), heating: at first will heat through the straight strap clamp slab material shove charge of the single multiple length after rolling, the steel temperature of coming out of the stove is 850～860 ℃;
(2), quench: the clamping plate steel after the punching quenches, and the water tank water temperature is 75～85 ℃, and high-temperature water is thick for the quenched martensite crystal grain of alleviating steel, and it is 830～850 ℃ that the clamping plate steel quenches into water temp, and the cool time is 43～48 seconds;
(3), tempering and cooling: when the clamping plate steel after the quenching was come out by the quenching water tank, the temperature of clamping plate steel was 600～640 ℃, and air cooling carries out auto-tempering on chain conveyor then, when below the steel temperature drop to 120 ℃, can enter cooling water tank, its water temperature is not limit, and the steel temperature is below 50 ℃ after the water outlet;
(4), cooled clamping plate steel carries out cold straightening, reconditioning processing, inspection packing.
2, XY30 steel according to claim 1, it is characterized in that: the XY30 steel can be applicable to rail in high speed railway connector clamp slab, also can be applicable to other low temperature railway casting steel, as: the reinforcing bar that bolt, railway spike, pull bar, concrete sleeper are used, locomotive, for motor vehicle web member, rod member, axle class part.
CNB011388331A 2001-12-13 2001-12-13 XY30 steel and its application Expired - Fee Related CN1164786C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CNB011388331A CN1164786C (en) 2001-12-13 2001-12-13 XY30 steel and its application
AU2002354151A AU2002354151A1 (en) 2001-12-13 2002-12-13 The steel rails' joint fishplate made of xy30 steel
PCT/CN2002/000889 WO2003050357A1 (en) 2001-12-13 2002-12-13 The steel rails' joint fishplate made of xy30 steel
US10/468,343 US20040069858A1 (en) 2001-12-13 2002-12-13 Steel rails' joint fishplate made of xy30 steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB011388331A CN1164786C (en) 2001-12-13 2001-12-13 XY30 steel and its application

Publications (2)

Publication Number Publication Date
CN1363711A true CN1363711A (en) 2002-08-14
CN1164786C CN1164786C (en) 2004-09-01

Family

ID=4674793

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB011388331A Expired - Fee Related CN1164786C (en) 2001-12-13 2001-12-13 XY30 steel and its application

Country Status (4)

Country Link
US (1) US20040069858A1 (en)
CN (1) CN1164786C (en)
AU (1) AU2002354151A1 (en)
WO (1) WO2003050357A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102634728A (en) * 2012-04-28 2012-08-15 首钢贵阳特殊钢有限责任公司 Small square Billet continuous casting production technique of Fe-Mn-C high-manganese steel
CN103008401A (en) * 2012-12-21 2013-04-03 鞍钢股份有限公司 Straightening method of tempered steel plate
CN103643124A (en) * 2013-11-20 2014-03-19 江苏天舜金属材料集团有限公司 Processing method of above-600MPa-grade high-strength steel bar connection sleeve

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033724B3 (en) * 2004-07-13 2005-10-27 Vossloh-Werke Gmbh System for fastening a rail for rail vehicles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877641A (en) * 1973-10-01 1975-04-15 Joseph Rolland Plourde Rail fish joint and method of making the same
US5077006A (en) * 1990-07-23 1991-12-31 Carondelet Foundry Company Heat resistant alloys
US5100613A (en) * 1990-10-16 1992-03-31 Bethlehem Steel Co. Hot-rolled microalloyed steel and its use in variable-thickness sections
AU663023B2 (en) * 1993-02-26 1995-09-21 Nippon Steel Corporation Process for manufacturing high-strength bainitic steel rails with excellent rolling-contact fatigue resistance
US5906791A (en) * 1997-07-28 1999-05-25 General Electric Company Steel alloys
JP4099613B2 (en) * 1999-03-04 2008-06-11 西日本旅客鉄道株式会社 Rail wear measuring ruler and method of construction of rail joint structure using the same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102634728A (en) * 2012-04-28 2012-08-15 首钢贵阳特殊钢有限责任公司 Small square Billet continuous casting production technique of Fe-Mn-C high-manganese steel
CN103008401A (en) * 2012-12-21 2013-04-03 鞍钢股份有限公司 Straightening method of tempered steel plate
CN103643124A (en) * 2013-11-20 2014-03-19 江苏天舜金属材料集团有限公司 Processing method of above-600MPa-grade high-strength steel bar connection sleeve

Also Published As

Publication number Publication date
WO2003050357A1 (en) 2003-06-19
CN1164786C (en) 2004-09-01
US20040069858A1 (en) 2004-04-15
AU2002354151A1 (en) 2003-06-23

Similar Documents

Publication Publication Date Title
FI127175B (en) Steel sheet, whose tendency to weld failure is small and tensile strength is 800 MPa, as well as process for manufacturing thereof
KR101387040B1 (en) Manganese steel strip having an increased phosphorus content and process for producing the same
BRPI0715102B1 (en) METHOD FOR PRODUCING EXCELLENT PERLANTIC RAIL IN WEAR RESISTANCE AND DUCTILITY
US20090155118A1 (en) High Strength Steel
CN1279203C (en) High strength and high ductility steel plate having hyperfine crystal grain structure produced by subjecting ordinary low carbon steel to low strain working and annealing,and method for prodn. thereof
CN1164786C (en) XY30 steel and its application
JPH11293383A (en) Thick steel plate minimal in hydrogen induced defect, and its production
CN1166802C (en) YW35 steel and its application
JP2003129180A (en) Pearlitic rail superior in toughness and ductility, and manufacturing method therefor
KR100900646B1 (en) Method of manufacturing high Si added high carbon wire rod
KR100544752B1 (en) Method of manufacturing high carbon wire rod having superior cold formability for bolt
CA2561703A1 (en) High strength steel
JP2003105499A (en) Pearlitic rail having excellent toughness and ductility, and production method therefor
KR100891866B1 (en) Method of manufacturing high Si added medium carbon wire rod
AU736649B2 (en) Process for manufacture of a high-strength track section, and track section
KR100448623B1 (en) Method for manufacturing high Si added medium carbon wire rod to reduce decarburization depth of its surface
KR100627461B1 (en) Method of manufacturing hot rolling steel sheet having high strength for linepipe
KR100380739B1 (en) High strength high elongation duplex steel with a good delayed fracture resistance and a method of manufacturing therefor
KR100516518B1 (en) Steel having superior cold formability and delayed fracture resistance, and method for manufacturing working product made of it
KR100891867B1 (en) Method for manufacturing high Si added medium carbon wire rod free from low temperature annealing
KR100554751B1 (en) Method for manufacturing high Si added medium carbon wire rod by forming decarburized ferritic layer
KR100544753B1 (en) Method of manufacturing medium carbon wire rod having superior cold formability for bolt
KR100544744B1 (en) Method for manufacturing high Si added high carbon wire rod by forming decarburinized ferritic layer
KR100544754B1 (en) Method for high carbon wire rod containing high silicon to reducing decarburization depth of its surface
KR100920567B1 (en) Method of manufacturing high Si added high carbon wire rod

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee