HRP950386B1 - Process and apparatus for heat-treating shaped rolled pieces - Google Patents
Process and apparatus for heat-treating shaped rolled piecesInfo
- Publication number
- HRP950386B1 HRP950386B1 HRA1431/94A HRP950386A HRP950386B1 HR P950386 B1 HRP950386 B1 HR P950386B1 HR P950386 A HRP950386 A HR P950386A HR P950386 B1 HRP950386 B1 HR P950386B1
- Authority
- HR
- Croatia
- Prior art keywords
- section
- profile
- temp
- cooling
- equal intensity
- Prior art date
Links
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
- 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
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/009—Pearlite
-
- 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
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Metal Rolling (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
Abstract
Method for treatment of rolled profile material comprises straightening rolled profile (1) with plastic forming at 750-1100 degrees C temp.. Initial cooling takes place with locally equal intensity to 5-120 degrees C temp. above the Ar point of the material. This is followed by cooling which has equal intensity in the longitudinal direction of the profile, but varies along the circumference of the profile cross section to ensure a martensitic-free fine pearlitic structure. Final cooling takes place with locally equal intensity down to room temp.. Also claimed is the appts. for carrying out the above heat treating, novel in that is has a preparatory section (A), a second cooling section (B) and a final cooling section (C). <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT0143194A AT402941B (en) | 1994-07-19 | 1994-07-19 | METHOD AND DEVICE FOR THE HEAT TREATMENT OF PROFILED ROLLING MATERIAL |
Publications (2)
Publication Number | Publication Date |
---|---|
HRP950386A2 HRP950386A2 (en) | 1997-04-30 |
HRP950386B1 true HRP950386B1 (en) | 2000-02-29 |
Family
ID=3513759
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
HRA1431/94A HRP950386B1 (en) | 1994-07-19 | 1995-07-07 | Process and apparatus for heat-treating shaped rolled pieces |
Country Status (19)
Country | Link |
---|---|
EP (1) | EP0693562B1 (en) |
JP (1) | JP3811865B2 (en) |
KR (1) | KR100372402B1 (en) |
CN (1) | CN1045214C (en) |
AT (2) | AT402941B (en) |
AU (1) | AU702091B2 (en) |
BR (1) | BR9503367A (en) |
CA (1) | CA2154090C (en) |
CZ (1) | CZ290866B6 (en) |
DE (1) | DE59508080D1 (en) |
ES (1) | ES2145247T3 (en) |
HR (1) | HRP950386B1 (en) |
HU (1) | HU218230B (en) |
PL (1) | PL178079B1 (en) |
RU (1) | RU2101369C1 (en) |
SI (1) | SI9500230B (en) |
SK (1) | SK282161B6 (en) |
TW (1) | TW300920B (en) |
UA (1) | UA34469C2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE10148305A1 (en) | 2001-09-29 | 2003-04-24 | Sms Meer Gmbh | Process and plant for the thermal treatment of rails |
KR20090017686A (en) | 2004-01-09 | 2009-02-18 | 신닛뽄세이테쯔 카부시키카이샤 | Rail manufacturing method |
JP5169030B2 (en) * | 2007-06-08 | 2013-03-27 | 日産自動車株式会社 | Quenching method and quenching apparatus |
AT505930B1 (en) * | 2008-02-04 | 2009-05-15 | Voestalpine Schienen Gmbh | DEVICE FOR HARDENING RAILS |
EP2253394B1 (en) | 2008-02-27 | 2018-04-04 | Nippon Steel & Sumitomo Metal Corporation | Cooling system and cooling method of rolling steel |
DE102012020844A1 (en) * | 2012-10-24 | 2014-04-24 | Thyssenkrupp Gft Gleistechnik Gmbh | Process for the thermomechanical treatment of hot-rolled profiles |
JP6137093B2 (en) * | 2014-09-18 | 2017-05-31 | Jfeスチール株式会社 | Rail cooling method and cooling equipment |
CA3130062C (en) | 2019-03-15 | 2023-09-26 | Nippon Steel Corporation | Railway rail |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2087346A (en) * | 1930-08-21 | 1937-07-20 | United States Steel Corp | Method of producing steel rails |
FR2109121A5 (en) | 1970-10-02 | 1972-05-26 | Wendel Sidelor | |
DE2439338C2 (en) * | 1974-08-16 | 1980-08-28 | Fried. Krupp, Huettenwerke Ag, 4630 Bochum | Process for the heat treatment of rails from the rolling heat |
BE854834A (en) * | 1977-05-18 | 1977-09-16 | Centre Rech Metallurgique | PROCESS FOR MANUFACTURING RAILS WITH IMPROVED CHARACTERISTICS |
DE3006695C2 (en) | 1980-02-22 | 1988-12-01 | Klöckner-Werke AG, 4100 Duisburg | Process for heat treatment of rails |
US4486248A (en) * | 1982-08-05 | 1984-12-04 | The Algoma Steel Corporation Limited | Method for the production of improved railway rails by accelerated cooling in line with the production rolling mill |
LU84417A1 (en) * | 1982-10-11 | 1984-05-10 | Centre Rech Metallurgique | IMPROVED PROCESS FOR THE MANUFACTURE OF RAILS AND RAILS OBTAINED BY THIS PROCESS |
DE3446794C1 (en) | 1984-12-21 | 1986-01-02 | BWG Butzbacher Weichenbau GmbH, 6308 Butzbach | Process for the heat treatment of pearlitic rail steel |
EP0186373B1 (en) * | 1984-12-24 | 1990-09-12 | Nippon Steel Corporation | Method of and apparatus for heat treating rails |
US4886558A (en) * | 1987-05-28 | 1989-12-12 | Nkk Corporation | Method for heat-treating steel rail head |
US4895605A (en) * | 1988-08-19 | 1990-01-23 | Algoma Steel Corporation | Method for the manufacture of hardened railroad rails |
DE4003363C1 (en) | 1990-02-05 | 1991-03-28 | Voest-Alpine Industrieanlagenbau Ges.M.B.H., Linz, At | Hardening rails from rolling temp. - using appts. with manipulator engaging rail from exit roller table with support arms positioned pivotably on each side |
AT399346B (en) | 1992-07-15 | 1995-04-25 | Voest Alpine Schienen Gmbh | METHOD FOR TREATING RAILS |
DE4237991A1 (en) | 1992-11-11 | 1994-05-19 | Schloemann Siemag Ag | Cooling hot-rolled products, rails - using appts. with carrier elements allowing rails to be suspended with their top downwards |
-
1994
- 1994-07-19 AT AT0143194A patent/AT402941B/en not_active IP Right Cessation
-
1995
- 1995-06-14 UA UA95062801A patent/UA34469C2/en unknown
- 1995-06-29 AU AU23349/95A patent/AU702091B2/en not_active Expired
- 1995-07-06 JP JP20265295A patent/JP3811865B2/en not_active Expired - Fee Related
- 1995-07-07 HR HRA1431/94A patent/HRP950386B1/en not_active IP Right Cessation
- 1995-07-07 CN CN95109955A patent/CN1045214C/en not_active Expired - Lifetime
- 1995-07-13 AT AT95890136T patent/ATE191241T1/en active
- 1995-07-13 EP EP95890136A patent/EP0693562B1/en not_active Expired - Lifetime
- 1995-07-13 ES ES95890136T patent/ES2145247T3/en not_active Expired - Lifetime
- 1995-07-13 DE DE59508080T patent/DE59508080D1/en not_active Expired - Lifetime
- 1995-07-14 PL PL95309657A patent/PL178079B1/en unknown
- 1995-07-17 CZ CZ19951861A patent/CZ290866B6/en not_active IP Right Cessation
- 1995-07-17 SK SK901-95A patent/SK282161B6/en not_active IP Right Cessation
- 1995-07-18 CA CA002154090A patent/CA2154090C/en not_active Expired - Lifetime
- 1995-07-18 RU RU95113234A patent/RU2101369C1/en active
- 1995-07-18 HU HU9502162A patent/HU218230B/en not_active IP Right Cessation
- 1995-07-18 BR BR9503367A patent/BR9503367A/en not_active IP Right Cessation
- 1995-07-18 SI SI9500230A patent/SI9500230B/en not_active IP Right Cessation
- 1995-07-19 TW TW084107478A patent/TW300920B/zh not_active IP Right Cessation
- 1995-07-19 KR KR1019950021120A patent/KR100372402B1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2154090C (en) | 2005-01-11 |
SK90195A3 (en) | 1996-03-06 |
KR100372402B1 (en) | 2003-05-09 |
DE59508080D1 (en) | 2000-05-04 |
EP0693562A1 (en) | 1996-01-24 |
EP0693562B1 (en) | 2000-03-29 |
AU702091B2 (en) | 1999-02-11 |
ATE191241T1 (en) | 2000-04-15 |
HUT72292A (en) | 1996-04-29 |
JPH08170120A (en) | 1996-07-02 |
CA2154090A1 (en) | 1996-01-20 |
CZ186195A3 (en) | 1996-02-14 |
JP3811865B2 (en) | 2006-08-23 |
CN1123331A (en) | 1996-05-29 |
HU9502162D0 (en) | 1995-09-28 |
PL309657A1 (en) | 1996-01-22 |
TW300920B (en) | 1997-03-21 |
ATA143194A (en) | 1997-02-15 |
RU2101369C1 (en) | 1998-01-10 |
AT402941B (en) | 1997-09-25 |
BR9503367A (en) | 1996-09-10 |
SI9500230B (en) | 2001-12-31 |
HRP950386A2 (en) | 1997-04-30 |
HU218230B (en) | 2000-06-28 |
AU2334995A (en) | 1996-02-01 |
CN1045214C (en) | 1999-09-22 |
ES2145247T3 (en) | 2000-07-01 |
CZ290866B6 (en) | 2002-11-13 |
SK282161B6 (en) | 2001-11-06 |
SI9500230A (en) | 1997-02-28 |
UA34469C2 (en) | 2001-03-15 |
PL178079B1 (en) | 2000-02-29 |
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Legal Events
Date | Code | Title | Description |
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A1OB | Publication of a patent application | ||
AIPI | Request for the grant of a patent on the basis of a substantive examination of a patent application | ||
B1PR | Patent granted | ||
ODRP | Renewal fee for the maintenance of a patent |
Payment date: 20090707 Year of fee payment: 15 |
|
PBON | Lapse due to non-payment of renewal fee |
Effective date: 20100708 |