LTIP797A - Method for heat treatment of rails - Google Patents
Method for heat treatment of railsInfo
- Publication number
- LTIP797A LTIP797A LTIP797A LTIP797A LTIP797A LT IP797 A LTIP797 A LT IP797A LT IP797 A LTIP797 A LT IP797A LT IP797 A LTIP797 A LT IP797A LT IP797 A LTIP797 A LT IP797A
- Authority
- LT
- Lithuania
- Prior art keywords
- rails
- cooling agent
- cooling
- carried out
- section
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000010438 heat treatment Methods 0.000 title 1
- 239000002826 coolant Substances 0.000 abstract 3
- 238000001816 cooling Methods 0.000 abstract 2
- 239000000654 additive Substances 0.000 abstract 1
- 230000000996 additive effect Effects 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000007669 thermal treatment Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
- C21D2221/02—Edge parts
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Heat Treatment Of Articles (AREA)
- Magnetic Heads (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Furnace Charging Or Discharging (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Control Of Heat Treatment Processes (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Abstract
A method for the thermal treatment of rails, in particular of the rail head, in which cooling is carried out in a cooling agent that contains a synthetic cooling agent additive, starting at temperatures above 720° C. The treatment is carried out by immersion in the cooling agent until withdrawl of the immersed areas, courses, at a surface temperature between 450 and 550° C. results without temperature equalization across the whole of the cross-section, section, there by avoiding hardening of the rail web whilst maintaining an optimal cooling rate for the rail head.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0145592A AT399346B (en) | 1992-07-15 | 1992-07-15 | METHOD FOR TREATING RAILS |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| LTIP797A true LTIP797A (en) | 1994-03-25 |
| LT3008B LT3008B (en) | 1994-08-25 |
Family
ID=3514282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LTIP797A LT3008B (en) | 1992-07-15 | 1993-07-15 | Method for heat treatment of rails |
Country Status (20)
| Country | Link |
|---|---|
| US (2) | US6406569B1 (en) |
| EP (1) | EP0610460B1 (en) |
| KR (1) | KR0134900B1 (en) |
| CN (1) | CN1040232C (en) |
| AT (2) | AT399346B (en) |
| BR (1) | BR9305583A (en) |
| CA (1) | CA2116216C (en) |
| CZ (1) | CZ283571B6 (en) |
| DE (1) | DE59309839D1 (en) |
| ES (1) | ES2139661T3 (en) |
| HR (1) | HRP931054B1 (en) |
| LT (1) | LT3008B (en) |
| LV (1) | LV11192B (en) |
| MD (1) | MD940198A (en) |
| PL (1) | PL175451B1 (en) |
| RU (1) | RU94019951A (en) |
| SK (1) | SK281598B6 (en) |
| TW (1) | TW259818B (en) |
| UA (1) | UA26282C2 (en) |
| WO (1) | WO1994002652A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT402941B (en) | 1994-07-19 | 1997-09-25 | Voest Alpine Schienen Gmbh | METHOD AND DEVICE FOR THE HEAT TREATMENT OF PROFILED ROLLING MATERIAL |
| IN191289B (en) | 1994-07-19 | 2003-11-01 | Voest Alpine Schienen Gmbh | |
| USRE42360E1 (en) | 1994-11-15 | 2011-05-17 | Nippon Steel Corporation | Pearlitic steel rail having excellent wear resistance and method of producing the same |
| CN1083013C (en) * | 1996-09-29 | 2002-04-17 | 攀枝花钢铁(集团)公司 | Heat treatment method and device for producing high-strength steel rail by using rolling waste heat |
| AT407057B (en) * | 1996-12-19 | 2000-12-27 | Voest Alpine Schienen Gmbh | PROFILED ROLLING MATERIAL AND METHOD FOR THE PRODUCTION THEREOF |
| AT409268B (en) | 2000-05-29 | 2002-07-25 | Voest Alpine Schienen Gmbh & C | METHOD AND DEVICE FOR HARDENING RAILS |
| JP5145795B2 (en) * | 2006-07-24 | 2013-02-20 | 新日鐵住金株式会社 | Method for producing pearlitic rails with excellent wear resistance and ductility |
| US8241442B2 (en) | 2009-12-14 | 2012-08-14 | Arcelormittal Investigacion Y Desarrollo, S.L. | Method of making a hypereutectoid, head-hardened steel rail |
| US20110189047A1 (en) * | 2010-02-02 | 2011-08-04 | Transportation Technology Center, Inc. | Railroad rail steels resistant to rolling contact fatigue |
| US8813514B2 (en) * | 2012-08-06 | 2014-08-26 | Robert Hon-Sing Wong | Geothermal rail cooling and heating system |
| CN103014486A (en) * | 2012-12-08 | 2013-04-03 | 内蒙古包钢钢联股份有限公司 | Steel special for high-strength heat-treated steel rail |
| CN107208216B (en) | 2015-01-23 | 2019-02-12 | 新日铁住金株式会社 | rail |
| CN113557312B (en) | 2019-03-15 | 2023-04-04 | 日本制铁株式会社 | Rail for railway vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE582957C (en) | 1926-10-22 | 1933-08-25 | Maximilianshuette Eisenwerk | Procedure for remuneration of railway tracks |
| BE854834A (en) * | 1977-05-18 | 1977-09-16 | Centre Rech Metallurgique | PROCESS FOR MANUFACTURING RAILS WITH IMPROVED CHARACTERISTICS |
| JPS5818966B2 (en) * | 1978-06-23 | 1983-04-15 | 日本鋼管株式会社 | Rail manufacturing method |
| BE884443A (en) | 1980-07-23 | 1981-01-23 | Centre Rech Metallurgique | IMPROVEMENTS IN METHODS OF MANUFACTURING HIGH-STRENGTH RAILS |
| AT375402B (en) | 1982-03-09 | 1984-08-10 | Voest Alpine Ag | METHOD FOR HEAT-TREATING RAILS |
| JPH0745693B2 (en) * | 1988-05-18 | 1995-05-17 | 日本鋼管株式会社 | Rail cooling method |
| US4895605A (en) * | 1988-08-19 | 1990-01-23 | Algoma Steel Corporation | Method for the manufacture of hardened railroad rails |
-
1992
- 1992-07-15 AT AT0145592A patent/AT399346B/en not_active IP Right Cessation
-
1993
- 1993-07-09 AT AT93914544T patent/ATE185845T1/en not_active IP Right Cessation
- 1993-07-09 WO PCT/AT1993/000116 patent/WO1994002652A1/en not_active Ceased
- 1993-07-09 DE DE59309839T patent/DE59309839D1/en not_active Expired - Lifetime
- 1993-07-09 ES ES93914544T patent/ES2139661T3/en not_active Expired - Lifetime
- 1993-07-09 BR BR9305583A patent/BR9305583A/en not_active IP Right Cessation
- 1993-07-09 CA CA002116216A patent/CA2116216C/en not_active Expired - Lifetime
- 1993-07-09 CZ CZ94563A patent/CZ283571B6/en not_active IP Right Cessation
- 1993-07-09 EP EP93914544A patent/EP0610460B1/en not_active Expired - Lifetime
- 1993-07-09 SK SK294-94A patent/SK281598B6/en not_active IP Right Cessation
- 1993-07-09 UA UA94005532A patent/UA26282C2/en unknown
- 1993-07-09 US US08/533,944 patent/US6406569B1/en not_active Expired - Lifetime
- 1993-07-09 PL PL93302766A patent/PL175451B1/en unknown
- 1993-07-09 RU RU94019951/02A patent/RU94019951A/en unknown
- 1993-07-14 CN CN93109864A patent/CN1040232C/en not_active Expired - Lifetime
- 1993-07-15 LV LVP-93-992A patent/LV11192B/en unknown
- 1993-07-15 LT LTIP797A patent/LT3008B/en not_active IP Right Cessation
- 1993-07-15 HR HRA1455/92A patent/HRP931054B1/en not_active IP Right Cessation
- 1993-07-15 TW TW082105625A patent/TW259818B/zh active
-
1994
- 1994-03-14 KR KR94700834A patent/KR0134900B1/en not_active Expired - Lifetime
- 1994-07-14 MD MD94-0198A patent/MD940198A/en unknown
-
2001
- 2001-05-25 US US09/864,288 patent/US6547897B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| LV11192A (en) | 1996-04-20 |
| RU94019951A (en) | 1996-04-10 |
| US6406569B1 (en) | 2002-06-18 |
| AT399346B (en) | 1995-04-25 |
| US6547897B2 (en) | 2003-04-15 |
| KR0134900B1 (en) | 1998-06-15 |
| CA2116216C (en) | 2001-09-18 |
| TW259818B (en) | 1995-10-11 |
| ES2139661T3 (en) | 2000-02-16 |
| CA2116216A1 (en) | 1994-02-03 |
| ATA145592A (en) | 1994-09-15 |
| LT3008B (en) | 1994-08-25 |
| CZ56394A3 (en) | 1994-06-15 |
| US20010023724A1 (en) | 2001-09-27 |
| PL175451B1 (en) | 1998-12-31 |
| CN1040232C (en) | 1998-10-14 |
| LV11192B (en) | 1996-06-20 |
| UA26282C2 (en) | 1999-07-19 |
| EP0610460A1 (en) | 1994-08-17 |
| EP0610460B1 (en) | 1999-10-20 |
| HRP931054A2 (en) | 1995-06-30 |
| PL302766A1 (en) | 1994-08-22 |
| ATE185845T1 (en) | 1999-11-15 |
| SK281598B6 (en) | 2001-05-10 |
| DE59309839D1 (en) | 1999-11-25 |
| HRP931054B1 (en) | 2000-02-29 |
| WO1994002652A1 (en) | 1994-02-03 |
| MD940198A (en) | 1996-01-31 |
| CZ283571B6 (en) | 1998-05-13 |
| BR9305583A (en) | 1996-01-02 |
| SK29494A3 (en) | 1994-11-09 |
| CN1085258A (en) | 1994-04-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM9A | Lapsed patents |
Effective date: 20100715 |