EP2987872B1 - Device for thermally processing rails - Google Patents

Device for thermally processing rails Download PDF

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Publication number
EP2987872B1
EP2987872B1 EP13882352.1A EP13882352A EP2987872B1 EP 2987872 B1 EP2987872 B1 EP 2987872B1 EP 13882352 A EP13882352 A EP 13882352A EP 2987872 B1 EP2987872 B1 EP 2987872B1
Authority
EP
European Patent Office
Prior art keywords
coolant medium
chamber
collecting
baffle
medium
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.)
Active
Application number
EP13882352.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2987872A1 (en
EP2987872A4 (en
Inventor
Sergey Vasilievich Khlyst
Vladimir Mikhaylovich Kuzmichenko
Sergey Mikhaylovich Sergeev
Andrey Nikolaevlch SHESTAKOV
Ilya Sergeevich Khlyst
Mikhail Nikolaevich Kirichenko
Pavel Alexandrovich Pshenichnikov
Alexey Gennadievich Ivanov
Konstantin Gennadievich Kozhevnikov
Alexey Vladimirovich Gontar
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.)
Scientific And Manufacturing Enterprise "tomsk Electronic Company" Ltd
Original Assignee
Scientific And Manufacturing Enterprise "tomsk Electronic Company" 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.)
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Publication date
Application filed by Scientific And Manufacturing Enterprise "tomsk Electronic Company" Ltd filed Critical Scientific And Manufacturing Enterprise "tomsk Electronic Company" Ltd
Priority to PL13882352T priority Critical patent/PL2987872T3/pl
Publication of EP2987872A1 publication Critical patent/EP2987872A1/en
Publication of EP2987872A4 publication Critical patent/EP2987872A4/en
Application granted granted Critical
Publication of EP2987872B1 publication Critical patent/EP2987872B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • 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
    • C21D1/667—Quenching devices for spray 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for 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

Definitions

  • the invention relates to the field of metallurgy, in particular, to the thermal processing of rails including railroad rails.
  • RU2450877 (family member of WO 2009/107639 and EP2253394 ) describes a system of cooling a hot-rolled long steel beam, in particular, a rail, the system including a plurality of chambers arranged along the rolled steel beam, each of said chambers having a blowing hole facing the rolled steel beam and configured to blow cooling forced air fed into the chamber through a gas input port that is in fluid communication with the chamber; a nozzle plate having a plurality of nozzle orifices, the nozzle plate being located on the blowing hole so that the nozzle plate faces the rolled steel beam; a nozzle for feeding cooling water into the chamber; and a straightening plate located between the gas input port and the nozzle for feeding cooling water and configured to prevent from a direct impact of the cooling forced air fed through the gas input port on the nozzle plate; the cooling system being configured to spray a coolant medium obtained by mixing said cooling water fed through the nozzle with said cooling forced air fed through the gas input port and straightened by said straightening plate in the direction of
  • This method is characterized in that the thermally processing a rail is effected by a medium with a continual cooling ability, which fails to provide flexibly changing the cooling rate during thermally processing one rail in order to ensure optimal characteristics thereof.
  • Another disadvantage of this system consists in means for achieving the uniformity of distribution of air within the chamber, i.e., in the straightening plate horizontally positioned in a wider portion of the chamber with such a gap that the cooling forced air passing between the side edges of the straightening plate and the inner walls of said wider portion of the chamber is uniformly distributed in a narrower portion thereof.
  • strict requirements shall be specified to the accuracy of positioning the straightening plate, as even slight deflections of positioning the plate during assembly operations cause a dramatic redistribution of air in the chamber.
  • the technical result declared in this patent depends on the form of the chamber which includes a wider portion that is made such in order to provide input of gas; a narrower portion having a lesser width than the wider portion; and a sloped portion interconnecting said wider and narrower portions; the blowing hole being located at the end of the narrower portion of the chamber.
  • Such a complex form of the chambers is a disadvantage in terms of design, arrangement and installation of devices for thermally processing rails.
  • the form of chambers is a function of specific conditions of engineering design of thermal processing equipment, and there are good reasons to use different forms of upper, lower, and lateral chambers (collectors), e.g., for thermally processing variable-profile and/or nonsymmetrical-profile rails or long rolled steel profile, or in case of engineering design of said equipment in a space-limited industrial environment.
  • RU2456352 discloses a method and device for thermally processing a rail, the device comprising units of loading, unloading, positioning, and holding the rail, a turbo-compressor, a system of air-ducts and chambers (collectors) with nozzle orifices for feeding a coolant medium simultaneously onto both top and underside of the rail, units of positioning said air-ducts and chambers (collectors) with nozzle orifices, a system of controlling delivery of coolant medium, a system of temperature control, the device being characterized in that it has a system of pulsewisely quasicontinuously and/or continuously injecting water into an air flow, the system comprising a container for water, a water pipework, flow-rate and pressure controllers made as controlled valves and controlled regulation valves, pulse injectors governed by an injection control unit for injecting, in a pulsewise quasicontinuous and/or continuous mode, water into a flow of air medium with adjustably changeable humidity and pressure of the air in order to change the cooling ability of the medium
  • This technology makes it possible to select the mode of cooling and to control the rate of cooling the rail.
  • it does not solve the problem of non-uniformity of the coolant medium flow distribution at the input thereof into the chamber (collector) because of an abrupt change of the velocity of the flow owing to difference of sectional areas, namely, because the sectional area of the gas pipeline is significantly smaller than that of the chamber (collector), which causes an insufficiently uniform distribution of the coolant medium in the chamber (collector).
  • the technical result of the invention consists in simultaneously coupling differently shaped coupling surfaces of the gas pipeline and chamber for collecting the formed coolant medium and in smoothly changing the velocity of the flow of the coolant medium entering said chamber, as well as in dividing the flow of the coolant medium within said chamber, which cumulatively facilitates to achieve a more uniform distribution of the coolant medium flow within the chamber for collecting the formed coolant medium and a specified uniform distribution of the coolant medium on the surface of the processed rail.
  • a device for thermally processing a rail comprising a gas pipework coupled with chambers, a water pipework,
  • cooling modules 2 are arranged in series along a rail 1.
  • the number of the cooling modules 2 is determined in order to provide simultaneously cooling the entire length of the rail 1.
  • Each cooling module 2 may comprise: an upper chamber 3 for collecting the formed coolant medium and/or one or two lateral chambers 4 for collecting the formed coolant medium and/or a lower chamber 5 for collecting the formed coolant medium, that are arranged along respective surface of the rail 1 subjected to cooling.
  • the chambers 3, 4, and 5 for collecting the formed coolant medium are in fluid communication with gas pipework 6, which is communicated with water pipework 7.
  • Control unit 8 provides injecting, in a pulsewise quasicontinuous and/or continuous mode, water into a flow of gas.
  • each of the chambers 3, 4, and 5 for collecting the formed coolant medium is formed as a longitudinally oriented parallelepiped, as shown in Fig. 3 , or in any different shape in accordance with the type of surface subjected to thermally processing and conditions of assembling of the cooling modules 2.
  • Some optional versions are illustrated in Figs. 6-11 .
  • Each of the chambers 3, 4, and 5 for collecting the formed coolant medium has an intake opening 11 providing intake of coolant medium, the face of the chamber for collecting the formed coolant medium fronting the surface of the rail being formed as a perforated screen 9 ( Fig. 2 ) having guide holes 9a ( Figs. 4 and 5 ) for feeding the coolant medium onto the surfaces of the rail subjected to thermally processing.
  • the area of said intake opening 11 of the chamber for collecting the formed coolant medium may be less than or equal to that of the perforated screen 9.
  • the intake opening 11 of the chamber 3, 4, and/or 5 for collecting the formed coolant medium may be oriented either parallel, or at an angle to said perforated screen 9. As shown in Figs.
  • the gas pipework 6 is coupled with the chamber 3, 4, and/or 5 for collecting the formed coolant medium through a transition flange 10 formed as a frustum of a pyramid, which optimally provides coupling acorresponding pipe of the pipework 6 with the chamber 3, 4, or 5 for collecting the formed coolant medium, the two coupled parts being significantly different as to the shape of the surfaces to be coupled, a gradual change of the flow velocity of the coolant medium at the entrance to the chamber for collecting the formed coolant medium being simultaneously achieved.
  • the transition flange 10 has a built-in injector 12, so that the discharge opening of the latter is directed into said pipe of the gas pipework 6 in order to form coolant medium.
  • a baffle 13 is installed in the chamber 3, 4, and/or 5 for collecting the formed coolant medium to provide dividing of the coolant medium flow within the chamber for collecting the formed coolant medium. Said baffle 13 has a two-pitched surface ( Fig. 5 ).
  • the length of the baffle 13 is usually in a range of between 50% and 90% of the length of the chamber for collecting the formed coolant medium, and the width I of one pitch of the baffle 13 is calculated using the following formula: p / 2 sin ⁇ / 2 ⁇ l ⁇ b / 2 sin ⁇ / 2 , where
  • baffle 13 with its surface perforated with round holes and/or openings of rectangular or other shape.
  • the baffle 13 may have a variable width changing over its length.
  • transition flanges two-pitched baffles, and perforated screens with guide holes allows using chambers for collecting the formed coolant medium of various shapes enabling a differentiated thermal processing (depending on the type of the thermally processed item).
  • the baffles 13 are installed in the chambers for collecting the formed coolant medium 3, 4, and 5. Also, here are conceivable such embodiments of the device where the baffle 13 is installed only in the chambers for collecting the formed coolant medium 3 or 4, or 5, or 3 and 4, or 3 and 5, or 4 and 5, which would allow using the device, e.g., for processing rails of a non-uniform and/or non-symmetrical profile, or long symmetrical and/or non- symmetrical rolled steel profile.
  • the device operates in the following manner:
  • the devise provides conducting an adjustable differentiated cooling in both feed-through and in-and-out modes.
  • the rail In the feed-through cooling mode, the rail is moved relative to the cooling modules with a programmatically preset velocity.
  • the rail In the in-and-out cooling mode, the rail is held motionless relative to the cooling modules.
  • the rail 1 is delivered from rolling or separate heating into a quenching device and positioned relative to the cooling modules 2.
  • the cooling is started from a temperature not lower that the austenitisation temperature.
  • Gas is fed through gas pipework 6 by a turbine compressor (not shown).
  • Water delivered through water pipework 7 is injected into said gas pipework 6 by injectors 12 inbuilt in the transition flange 10 is injected into said gas pipework 6, where intermixing of the water and gas results in forming a coolant medium.
  • a control unit 8 adjusts the mass-flow rate of the gas in accordance with the environmental temperature and humidity, ensuring a preset pressure in the chambers for collecting the formed coolant medium 3, 4, and 5, and the mass-flow rate of the injected water, thereby adjusting the mass ratio therebetween in a preset range in order to obtain a coolant medium having preset characteristics, which provides the preset (constant / required) velocity of the flow of the coolant medium.
  • the formed coolant medium flowing out of the gas pipework 6 flows through the transition flange 10, which helps reduce the flow resistance thereof, and, through an intake opening 11, is fed into the chambers for collecting the formed coolant medium 3, 4, and 5, wherein a baffle 13 divides the flow of the coolant medium and provides the uniformity of distribution thereof over the volume of each of said chambers for collecting the formed coolant medium.
  • the coolant medium is directed to corresponding surfaces of the rail 1 via guide holes 9a of a perforated screen 9 of each of the chambers for collecting the formed coolant medium 3, 4, and 5.
  • the uniformity of the thermal processing of the rails over the length of the chambers for collecting the formed coolant medium was evaluated based on the Brinell hardness thereof measured on the rail head running surface in 50 mm increments subsequent to removal of a 0.50 mm decarburized layer from the surface. Distribution diagrams of the Brinell hardness over the rail head running surface are shown in Fig. 12 .
  • the device for thermally processing rails allows for simultaneously solving the problem of coupling a pipeline and a chamber for collecting the formed coolant medium when the coupled surfaces thereof differ in form and achieving a gradual change of the velocity of the flow of coolant medium at the entrance to the chamber for collecting the formed coolant medium, and also allows for dividing the flow of coolant medium inside the chamber for collecting the formed coolant medium, these features together allowing for equally distributing a flow of coolant medium in a chamber for collecting the formed coolant medium and for achieving the required (specified) equal distribution of coolant medium on the surface of a rail.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
EP13882352.1A 2013-04-17 2013-04-17 Device for thermally processing rails Active EP2987872B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL13882352T PL2987872T3 (pl) 2013-04-17 2013-04-17 Urządzenie do termicznej obróbki szyn

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/RU2013/000327 WO2014171848A1 (ru) 2013-04-17 2013-04-17 Устройство для термической обработки рельсов

Publications (3)

Publication Number Publication Date
EP2987872A1 EP2987872A1 (en) 2016-02-24
EP2987872A4 EP2987872A4 (en) 2016-12-07
EP2987872B1 true EP2987872B1 (en) 2018-07-18

Family

ID=51731657

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13882352.1A Active EP2987872B1 (en) 2013-04-17 2013-04-17 Device for thermally processing rails

Country Status (6)

Country Link
EP (1) EP2987872B1 (pl)
EA (1) EA027490B1 (pl)
PL (1) PL2987872T3 (pl)
RU (1) RU2607882C1 (pl)
TR (1) TR201812809T4 (pl)
WO (1) WO2014171848A1 (pl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107052720B (zh) * 2017-04-12 2019-11-08 浙江金固股份有限公司 一种钢制车轮的制造方法及其采用该方法成型的车轮
US20240254580A1 (en) * 2021-05-31 2024-08-01 Sms Group Gmbh Forced air cooling for cooling long steel products

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129670A (en) * 1935-05-11 1938-09-13 Cora M Brunner Means for cooling rails
CA1193176A (en) * 1982-07-06 1985-09-10 Robert J. Ackert Method for the production of improved railway rails by accelerated colling in line with the production rolling mill
US4953832A (en) * 1988-03-24 1990-09-04 Bethlehem Steel Corporation Apparatus for the controlled cooling of hot rolled steel samples
JPH01246323A (ja) * 1988-03-28 1989-10-02 Nippon Steel Corp レールの熱処理装置におけるレールの拘束装置
JPH08295938A (ja) * 1995-04-27 1996-11-12 Nkk Corp 高温レールの冷却方法及び装置
JP2001523554A (ja) * 1997-11-14 2001-11-27 コンカスト スタンダード アクチェンゲゼルシャフト 冷却液を連続鋳造製品に噴霧するための噴霧ノズル
AT409268B (de) * 2000-05-29 2002-07-25 Voest Alpine Schienen Gmbh & C Verfahren und einrichtung zum härten von schienen
DE102004015741A1 (de) * 2004-03-29 2005-10-20 Sms Demag Ag Vorrichtung zum Kühlen von Blechen und Bändern
EA006413B1 (ru) * 2004-04-26 2005-12-29 Мечеслав Станиславович Желудкевич Способ управляемого охлаждения при термообработке изделий из различных материалов, металлов и их сплавов водовоздушной смесью и устройство для его осуществления
AU2009218189B2 (en) * 2008-02-27 2014-05-22 Nippon Steel Corporation Cooling system and cooling method of rolling steel
RU2369646C1 (ru) * 2008-07-21 2009-10-10 ООО Научно-производственное предприятие "Томская электронная компания" Способ дифференцированной термообработки профилированного проката, в частности рельса, и устройство для его осуществления
RU2456352C1 (ru) * 2010-11-11 2012-07-20 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Способ и устройство термической обработки рельсов
RU2487177C2 (ru) 2011-07-28 2013-07-10 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Способ и установка термической обработки рельсов
RU2484148C1 (ru) 2011-10-27 2013-06-10 Общество С Ограниченной Ответственностью Научно-Производственное Предприятие "Томская Электронная Компания" Способ и установка термической обработки рельсов

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
TR201812809T4 (tr) 2018-09-21
EP2987872A1 (en) 2016-02-24
RU2607882C1 (ru) 2017-01-20
EA201500843A1 (ru) 2015-12-30
EP2987872A4 (en) 2016-12-07
EA027490B1 (ru) 2017-07-31
PL2987872T3 (pl) 2018-12-31
WO2014171848A1 (ru) 2014-10-23

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