US20020020474A1 - Method and device for cooling hot-rolled profiled sections - Google Patents

Method and device for cooling hot-rolled profiled sections Download PDF

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Publication number
US20020020474A1
US20020020474A1 US09/738,865 US73886500A US2002020474A1 US 20020020474 A1 US20020020474 A1 US 20020020474A1 US 73886500 A US73886500 A US 73886500A US 2002020474 A1 US2002020474 A1 US 2002020474A1
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US
United States
Prior art keywords
cooling
parameters
rolling
temperature
functional units
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.)
Abandoned
Application number
US09/738,865
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English (en)
Inventor
Meinert Meyer
Uwe Plociennik
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.)
SMS Siemag AG
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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
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Assigned to SMS DEMAG AG reassignment SMS DEMAG AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MEYER, MEINERT, PLOCIENNIK, UWE
Publication of US20020020474A1 publication Critical patent/US20020020474A1/en
Abandoned legal-status Critical Current

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    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/24—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/26—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/08—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling structural sections, i.e. work of special cross-section, e.g. angle steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2261/00—Product parameters
    • B21B2261/20—Temperature
    • B21B2261/21—Temperature profile
    • 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
    • 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
    • C21D1/84—Controlled slow cooling
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for cooling hot-rolled profiled sections from the rolling heat.
  • the profiled sections are formed of section parts of different mass.
  • Profiled rolling stock for example, rails
  • rails are cooled on cooling banks from the rolling heat to a temperature under 80° C.
  • the rail head and the rail foot exhibit different cooling behavior, wherein the rail foot as a result of its larger heat conveying surfaces relative to its mass in comparison to the rail head cools faster then the rail head.
  • This warping action can be counteracted to a certain degree by pre-bending the still hot rail.
  • this requires disadvantageously a complex hot bending process of uncertain results.
  • the rails must be straightened after cooling.
  • inherent stresses are caused in the rail which have a detrimental effect on their strength. Numerous proposals are known in order to counteract these problems.
  • German laid-open patent document DE 42 37 991 A1 describes a method for cooling profiled rolling stock hot-rolled in roll stands, in particular, of rails, on a cooling bank, by means of natural convection or forced air cooling.
  • the invention resides in that the rails are suspended with their rail head upside down and transported across a cooling bank. With this measure, the heat transmission conditions are changed in the case of natural convection already so beneficially that the temperature difference between the rail head and the rail foot of the rail of approximately 140° C. for a horizontally positioned rail is reduced to approximately 50° C. for the suspended rail.
  • German patent 21 61 704 describes a method as well as a device for a stress-free and warp-free cooling of railroad rails which resides in that identical profiled rail sections to be cooled are symmetrically clamped together in pairs, rail foot against rail foot which thus provide abutments for one another, and are transported by a transverse conveyor across a cooling bank. Since each rail head has substantially the same mass as the rail foot, but the peripheral surface of the rail foot is twice that of the rail head, the peripheral surface of the rail feet in their clamped position in comparison to their mass is approximately of the same magnitude as the ratio of the peripheral surface and mass of the rail head. This provides a uniform cooling of the rail heads and the rail feet.
  • German patent 404 127 a method for straightening metal rods of asymmetric cross-section, in particular, of railroad rails, is disclosed wherein the thick parts of the cross-section are subjected to such a controlled artificial cooling that all parts, despite their non-uniform thickness, shrink by the same amount and the rods, during cooling to ambient temperature, remain straight.
  • the artificial cooling is realized either by immersion into a liquid, wetting or spraying, by blowing atomized liquid, by steam, air or other gases, wherein the employed medium acts continuously or intermittently during the entire cooling period or only during a portion of the cooling period.
  • the German patent 19 42 929 describes a method for cooling rails, wherein the rails, before reaching the austenite transformation temperature, are placed on the rail foot at a spacing above a heat-reflecting layer.
  • a solid insulation material can be placed onto the running surface of the rails during the further course of cooling.
  • a mutual positive effect by radiation is moreover achieved in this method in that the rails are positioned directly adjacent to one another so that the rail feet contact one another laterally. This results in a beneficial stress compensation in the rail cross-section.
  • the placement of the rails on the rail foot before reaching the austenite transformation temperature at a spacing above a heat-reflecting layer has the advantage that a premature beginning of the austenite transformation in the rail foot and rail stay is prevented.
  • the known methods have the common disadvantage that they are more or less empirical, i.e., it is first necessary by means of time-consuming experiments to determine which parameters have to be observed when performing the method in order to ensure the desired cooling results. Accordingly, for each batch at least test samples of hot-rolled profiled sections are used and, in the case of results that are not immediately satisfying, tests must be repeated and scrap metal is produced in many cases.
  • this is achieved in that the course of temperature in the rolling mill is simulated for the rolling stock already before the actual rolling and cooling process, wherein in several simulation calculations the cooling parameters in the simulation are varied such that the adjustments of the desired cooling process, for example, cooling by quenching or cooling with minimal temperature differences, can be controlled by the parameters obtained from the simulations taking into account the actual values measured upstream and downstream of the cooling stretch.
  • the required control parameters for example, amplification factors
  • required control parameters for example, amplification factors
  • the measures of the invention make it possible to set the cooling parameters such as cooling medium pressure, cooling medium volume flow, arrangement of the cooling zones and of the profiled sections to be cooled, also for changing profile shapes, such that an optimal cooling result will be obtained.
  • the simulation calculations are controlled and supplemented by measuring the rolling stock temperature across the periphery and the length of the profiled section upstream and downstream of the cooling zones. Should the temperatures deviate already before entry of the rolling stock into the cooling zone, a change of the preadjustment of the cooling zone still before entry of the rolling stock into the cooling zone is carried out. Should the temperatures of the rolling stock deviate from the nominal temperatures downstream of the cooling zone, the parameters resulting from the simulation are also used for a correction of the adjustments of the cooling stretch.
  • FIGURE of the drawing shows an embodiment according to the invention of a closed active loop for controlling the cooling process.
  • the closed active loop is comprised of five linked functional units 1 , 2 , 3 , 4 , 5 whose tasks and functions will be explained in the following.
  • a data transfer from the process data unit 3 to the technology data unit 2 is carried out via a corresponding link 7 , wherein the technology data unit has the following functions:
  • the technology data unit 2 is connected to the simulation unit 1 by means of a link 8 so that the active loop is closed.
  • control unit 4 For optimizing the determined cooling model a control unit 4 is connected between the process data unit 3 and the simulation unit 1 by means of the link 9 , wherein the control unit 4 performs the following functions:

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Control Of Metal Rolling (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Metal Rolling (AREA)
  • Control Of Heat Treatment Processes (AREA)
US09/738,865 1999-12-23 2000-12-15 Method and device for cooling hot-rolled profiled sections Abandoned US20020020474A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19962891.2 1999-12-23
DE1999162891 DE19962891A1 (de) 1999-12-23 1999-12-23 Verfahren und Vorrichtung zum Abkühlen von warmgewalzten Profilen

Publications (1)

Publication Number Publication Date
US20020020474A1 true US20020020474A1 (en) 2002-02-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US09/738,865 Abandoned US20020020474A1 (en) 1999-12-23 2000-12-15 Method and device for cooling hot-rolled profiled sections

Country Status (7)

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US (1) US20020020474A1 (enrdf_load_html_response)
EP (1) EP1111074B1 (enrdf_load_html_response)
JP (1) JP2001198614A (enrdf_load_html_response)
KR (1) KR100686925B1 (enrdf_load_html_response)
AT (1) ATE290612T1 (enrdf_load_html_response)
DE (2) DE19962891A1 (enrdf_load_html_response)
EG (1) EG22728A (enrdf_load_html_response)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITLI20090004A1 (it) * 2009-05-21 2010-11-22 Lucchini S P A Rotaie altoresistenziali a morfologia perlitica coloniale con elevato rapporto tenacita'-resistenza a rottura ed omogeneita' di proprieta' meccaniche e tecnologiche e relativo processo di fabbricazione.
US20110272067A1 (en) * 2008-11-20 2011-11-10 voestalpine Tublars GmbH & Co KG Method and Apparatus for Producing Steel Pipes Having Particular Properties
US20120216923A1 (en) * 2009-11-24 2012-08-30 Sumitomo Metal Industries, Ltd. Manufacturing apparatus of hot-rolled steel sheet and manufacturing method of hot-rolled steel sheet
EP2674504A1 (en) * 2012-06-11 2013-12-18 Siemens S.p.A. Method and system for thermal treatments of rails
CN103537490A (zh) * 2013-10-24 2014-01-29 天津工业大学 用于33Mn2V型热轧无缝钢管穿孔组织预测的方法
CN114480829A (zh) * 2022-01-13 2022-05-13 陕西化建工程有限责任公司 热处理试板模拟不同厚度过程设备热处理工艺的方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102151704B (zh) * 2010-02-11 2013-04-03 宝山钢铁股份有限公司 一种以温度为直控参数的高速线材斯太尔摩线冷却方法
DE102010033473B4 (de) * 2010-08-05 2014-05-15 Maschinenbau-Service-Automatisierungstechnik Chemnitz GmbH Verfahren zur Wärmebehandlung des Radkranzes von Schienenfahrzeugrädern
CN104923575B (zh) * 2015-05-28 2017-12-12 柳州钢铁股份有限公司 轧钢温度控制方法
CN108237146A (zh) * 2017-12-07 2018-07-03 江苏省沙钢钢铁研究院有限公司 一种提高帘线钢氧化皮剥离性能的方法

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
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
EP0453566B1 (en) * 1989-06-16 1998-04-08 Kawasaki Steel Corporation Steel material cooling control method
JPH04141520A (ja) * 1990-09-28 1992-05-15 Kawasaki Steel Corp 薄肉ウェブｈ形鋼の製造方法
JP2653617B2 (ja) * 1992-12-11 1997-09-17 新日本製鐵株式会社 連続熱間圧延の冷却制御方法
DE19503747A1 (de) * 1995-02-04 1996-08-08 Schloemann Siemag Ag Verfahren und Vorrichtung zum Abkühlen von warmgewalzten Profilen
JPH0947808A (ja) * 1995-08-02 1997-02-18 Kawasaki Steel Corp 熱間仕上げ圧延方法
EP0807692A1 (de) * 1996-05-15 1997-11-19 Sms Schloemann-Siemag Aktiengesellschaft Verfahren zum Kühlen von Profilstahl-Trägern
JPH11176707A (ja) * 1997-12-05 1999-07-02 Ricoh Co Ltd 半導体プロセス・デバイスシミュレーション装置
JP3612973B2 (ja) * 1997-12-22 2005-01-26 松下電工株式会社 成形性解析方法
JPH11347629A (ja) * 1998-06-09 1999-12-21 Nkk Corp 高温鋼板の矯正及び冷却装置並びにその矯正及び冷却方法
DE19850253A1 (de) * 1998-10-31 2000-05-04 Schloemann Siemag Ag Verfahren und System zur Regelung von Kühlstrecken

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110272067A1 (en) * 2008-11-20 2011-11-10 voestalpine Tublars GmbH & Co KG Method and Apparatus for Producing Steel Pipes Having Particular Properties
US9394582B2 (en) * 2008-11-20 2016-07-19 Voestalpine Tubulars Gmbh & Co Kg Method and apparatus for producing steel pipes having particular properties
ITLI20090004A1 (it) * 2009-05-21 2010-11-22 Lucchini S P A Rotaie altoresistenziali a morfologia perlitica coloniale con elevato rapporto tenacita'-resistenza a rottura ed omogeneita' di proprieta' meccaniche e tecnologiche e relativo processo di fabbricazione.
US20120216923A1 (en) * 2009-11-24 2012-08-30 Sumitomo Metal Industries, Ltd. Manufacturing apparatus of hot-rolled steel sheet and manufacturing method of hot-rolled steel sheet
US8500927B2 (en) * 2009-11-24 2013-08-06 Nippon Steel & Sumitomo Metal Corporation Manufacturing apparatus of hot-rolled steel sheet and manufacturing method of hot rolled steel sheet
EP2674504A1 (en) * 2012-06-11 2013-12-18 Siemens S.p.A. Method and system for thermal treatments of rails
WO2013186137A1 (en) * 2012-06-11 2013-12-19 Siemens S.P.A. Method and system for thermal treatments of rails
US10125405B2 (en) 2012-06-11 2018-11-13 Primetals Technologies Italy S.R.L. Method and system for thermal treatments of rails
CN103537490A (zh) * 2013-10-24 2014-01-29 天津工业大学 用于33Mn2V型热轧无缝钢管穿孔组织预测的方法
CN114480829A (zh) * 2022-01-13 2022-05-13 陕西化建工程有限责任公司 热处理试板模拟不同厚度过程设备热处理工艺的方法

Also Published As

Publication number Publication date
EP1111074A3 (de) 2004-01-07
DE19962891A1 (de) 2001-06-28
EP1111074B1 (de) 2005-03-09
EP1111074A2 (de) 2001-06-27
EG22728A (en) 2003-07-30
JP2001198614A (ja) 2001-07-24
KR20010067418A (ko) 2001-07-12
DE50009717D1 (de) 2005-04-14
ATE290612T1 (de) 2005-03-15
KR100686925B1 (ko) 2007-02-26

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AS Assignment

Owner name: SMS DEMAG AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MEYER, MEINERT;PLOCIENNIK, UWE;REEL/FRAME:011735/0535

Effective date: 20010112

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION