EP2933342A1 - Procédé et dispositif de fabrication d'une feuille d'acier avec une structure bainitique - Google Patents

Procédé et dispositif de fabrication d'une feuille d'acier avec une structure bainitique Download PDF

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Publication number
EP2933342A1
EP2933342A1 EP14164750.3A EP14164750A EP2933342A1 EP 2933342 A1 EP2933342 A1 EP 2933342A1 EP 14164750 A EP14164750 A EP 14164750A EP 2933342 A1 EP2933342 A1 EP 2933342A1
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EP
European Patent Office
Prior art keywords
steel
strip
temperature
strip steel
quenching
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.)
Withdrawn
Application number
EP14164750.3A
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German (de)
English (en)
Inventor
Leander Ahorner
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.)
Voestalpine Precision Strip GmbH
Original Assignee
Voestalpine Precision Strip GmbH
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 Voestalpine Precision Strip GmbH filed Critical Voestalpine Precision Strip GmbH
Priority to EP14164750.3A priority Critical patent/EP2933342A1/fr
Priority to BR112016023820A priority patent/BR112016023820A2/pt
Priority to PCT/EP2015/058213 priority patent/WO2015158795A1/fr
Priority to EP15716060.7A priority patent/EP3132062A1/fr
Priority to CN201580020127.2A priority patent/CN106460081A/zh
Priority to US15/304,403 priority patent/US20170044643A1/en
Priority to KR1020167031488A priority patent/KR20170012224A/ko
Priority to JP2016562215A priority patent/JP2017514996A/ja
Publication of EP2933342A1 publication Critical patent/EP2933342A1/fr
Withdrawn legal-status Critical Current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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/573—Continuous furnaces for strip or wire with 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • 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
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material
    • 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
    • C21D1/62—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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/20—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path tunnel furnace
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/28—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity for treating continuous lengths of work
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D9/00—Cooling of furnaces or of charges therein
    • F27D2009/0002—Cooling of furnaces
    • F27D2009/0005—Cooling of furnaces the cooling medium being a gas
    • F27D2009/0008—Ways to inject gases against surfaces

Definitions

  • the present invention relates to a method and an apparatus for producing a strip steel, in particular a spring steel strip or a punching tool, with bainitic microstructure.
  • Such spring band steels or punching tools are usually produced from a hot rolled and pickled carbonaceous steel strip which is typically first cold rolled to the desired thickness and then subjected to various treatment steps to affect the strength properties of the strip steel. Subsequently, the original wide strip steel is longitudinally divided and finalized in the desired dimensions in individual strips.
  • the strip steel is passed through a variety of treatment facilities in a continuous process, wherein it is first cured by heating and subsequent cooling and then changed by tempering and cooling in terms of its toughness properties.
  • different microstructures in the material can be generated.
  • a particularly preferred microstructure for carbon steels is the so-called bainite microstructure, which can be produced during the heat treatment of carbon steel by isothermal conversion as well as by continuous cooling. For as complete a conversion as possible, it is necessary to maintain certain cooling rates and temperatures during the hold time in the furnace during isothermal or quasi-isothermal conversion.
  • German patent application DE 10 2005 054 014 A is a method for producing a strip steel bainitic microstructure in a continuous process known in which the starting material at a temperature above the Austenitizing austenitizing temperature, the starting material then quenched in a metal bath to a temperature lower than the Austenitmaschinestemperatur and keeps in a hot air oven heated to the transformation temperature for bainite. After the holding phase, the steel strip is cooled to ambient temperature.
  • a typical metal bath that can be used to quench the strip steel located above the austenitizing temperature is a lead / bismuth melt.
  • the present invention is therefore based on the technical problem of specifying a method and an apparatus for producing a strip steel with a bainitic structure, in particular a spring steel strip or a punching tool, in a continuous tempering process, which is absolutely free of metal bath residues, in particular free of heavy metal residues such Lead or bismuth is.
  • the invention relates to a process for producing a strip steel having a bainitic structure, in which carbon-containing strip steel can be continuously subjected to the following treatment steps: austenitizing the strip steel at a temperature above the austenitizing temperature; Quenching the strip steel to a temperature in the bainitization region; and holding the strip steel at a temperature in the bainitization region for the quasi-isothermal formation of a bainite structure in the strip steel.
  • the method according to the invention is characterized in that the quenching of the strip steel is effected by means of a gaseous quenching agent.
  • a hot-rolled, optionally pickled steel strip can be used, which is cold-rolled to the desired thickness before the annealing with the inventive method.
  • a typical starting material is a strip steel having a width of 250 to 1250 millimeters and a thickness of 2 to 4 millimeters, which is cold rolled, for example, to a thickness of 0.4 millimeters to 2.5 millimeters.
  • the austenitizing of the strip steel occurs at a temperature above the austenitizing temperature, which is dependent on the composition of the strip steel and is typically in the region of 900 ° C or above.
  • the dimensions of the austenitizing furnace and the transport speed of the steel strip are chosen so that the steel strip is in the austenitizing furnace for several minutes, for example between 2 and 5 minutes.
  • the steel strip is very quickly, d. H. in the range of seconds, quenched to a temperature in the bainitization region of the strip material.
  • the bainitization area, d. H. the temperature at which a bainite structure can form in the strip steel is below the austenitizing temperature and above the martensite starting temperature of the strip steel material. Typically, this temperature is in the range of 300 ° C to 450 ° C.
  • the strip steel is held for several minutes, typically 2 to 3 minutes, to a temperature in the bainitization range, so that the bainite structure in the strip steel can form to the desired extent.
  • the gaseous quenching agent is preferably carried in a temperature-controlled circuit. This ensures on the one hand that the least possible loss of gaseous quenching agent occurs, so that, for example, even more expensive gases can be used.
  • the temperature control ensures that the gas can be blown onto the continuous strip steel at an adjustable, constant temperature.
  • a jet fan is used with a plurality of nozzles, which flow the strip steel preferably both from the top and from the bottom with gas.
  • the individual nozzles of the jet fan are adjustable in their orientation and / or in their flow.
  • the temperature of the steel strip after the quenching unit can be monitored with suitable sensors and the jet fan can be adjusted accordingly.
  • a hydrogen-containing gas mixture for example a mixture of hydrogen and nitrogen.
  • the hydrogen content of the gas mixture used as quenching agent is preferably between 50 vol.% And 100 vol.%.
  • Hydrogen is particularly preferred because of its high thermal conductivity, or more precisely because of the resulting high heat transfer coefficient as a coolant.
  • the heat transfer coefficient from a surface to a fluid flowing around the surface is defined as the ratio of thermal conductivity and thickness of the thermal boundary layer of the fluid at the surface.
  • nitrogen / hydrogen gas mixtures results in a maximum heat transfer coefficient at a hydrogen content of about 85 vol.%.
  • other gases with suitably high thermal conductivity may be used in addition to or as an alternative to hydrogen. Due to the conduct of the quenching agent in the circuit, the loss of hydrogen in the cooling circuit is low and is optionally replaced continuously.
  • the strip steel can be surface-decarburized in a moist, hydrogen-containing nitrogen atmosphere prior to austenitizing in an upstream furnace or even during austenitizing in the same furnace.
  • the surface decarburization typically takes place in a comparable temperature range as the austenitization, so that both processes can be carried out in the same furnace.
  • a gas mixture of hydrogen, nitrogen and water vapor is used, for example, an atmosphere of 15 wt.% Hydrogen gas and nitrogen with a water content, so that sets a dew point of about 39 ° C.
  • the moist, hydrogen-containing nitrogen atmosphere is preferably led in countercurrent to the transport direction of the ribbon beam, so that the impurities can be removed and led out of the oven.
  • the strip steel can be cooled to room temperature and further processed, for example by dividing the strip steel by longitudinal dividing into individual lines of lesser width, which then form, for example, the later cutting lines.
  • the later cutting lines For this purpose, after longitudinal cutting, at least one edge of the resulting lines, which later forms the cutting edge of the cutting lines, can harden.
  • the strip steel is particularly preferably tempered immediately after the formation of the bainite structure at a higher temperature, ie at a temperature above the bainitization range, to the desired final strength.
  • the annealing may be carried out, for example, at a temperature between 300 ° C and 600 ° C, typically at a temperature of 400 ° C in a hydrogen-containing nitrogen atmosphere.
  • the tempering is typically in a period of a few minutes, for example, in a period of one minute.
  • the hydrogen content of the inert nitrogen atmosphere used for tempering may be between 1 and 10% by volume, preferably about 5% by volume.
  • a strip steel is preferably used which consists of a steel with a carbon content of between 0.3 and 0.8% by weight.
  • the invention also relates to an apparatus for carrying out the method according to the invention comprising an austenitizing unit for heating a continuous strip steel to a temperature above the austenitizing temperature, a quenching unit for quenching the continuous strip steel to a temperature in the bainitization region and a holding unit for holding the strip steel to a temperature in the Bainitization for quasi-isothermal training of Bainitgeheges in strip steel includes.
  • the device according to the invention is characterized in that the quenching unit comprises a supply device for supplying a tempered, gaseous quenching agent to the continuous strip steel.
  • the supply device comprises a plurality of nozzles arranged above and below the continuous strip steel with which the tempered gaseous quenching agent can be blown onto the strip steel.
  • the quenching unit preferably also includes a gaseous quenching circuit and, optionally, a supply line capable of compensating for loss of gaseous quenching agent from a reservoir in the circuit.
  • the quenching unit also includes suitable means, for example heat exchangers, for maintaining the temperature of the gaseous quenching agent at a desired level.
  • a strip steel 10 is shown, which is guided via a gap 11 in a furnace 12 for austenitizing and optionally also for surface decarburization of the strip steel.
  • the transport direction of the steel strip is indicated by the arrows 13 and 14.
  • the strip steel 10 is heated to a temperature of about 900 ° C.
  • About a lock 15 of the steel strip 10 leaves the austenitizing furnace again.
  • the austenitizing / surface decarburization furnace there is a dry or humid atmosphere, which may optionally contain hydrogen as well as nitrogen.
  • the atmosphere is blown into the furnace via an inlet opening 16 located near the lock 15 and can exit the furnace 12 via an outlet opening 17 which is located near the entrance slit 11.
  • the austenitizing furnace 12 is adjoined by a quenching unit 19, which is separated from the austenitizing furnace by the lock 15.
  • a gaseous quenching agent for example, a hydrogen / nitrogen gas mixture
  • the circuit 20 comprises for this purpose a cooling device 21 in order to keep the circulating gas at a constant temperature which ensures that the strip steel 10 entering the quenching unit 19 is cooled in the range of seconds to a temperature in the bainitizing region of the strip steel 10.
  • the quenching unit 19 a plurality of nozzles 22, 23, which are arranged above or below the strip steel and blow the gaseous quenching agent on the surface of the continuous strip steel.
  • a feed 24 fresh gas can be supplied to the circuit 20 in order to compensate losses in the circuit, in particular losses via the lock 15 and further via the outlet opening 17.
  • Adjoining the quenching unit 19 is a holding unit 25, in which the continuous strip steel is kept at a temperature in the bainitizing region, for example at a temperature of 400 ° C., so that a bainite structure can be formed in the strip steel.
  • the atmosphere in the holding furnace 25 consists for example of a hydrogen / nitrogen mixture which is introduced via an inlet opening 28. Also, the holding furnace 25 has suitable (in FIG.
  • tempering on the basis of prevailing in the oven convection ensure that the formation of Bainitge Stahl can be quasi-isothermal.
  • the steel strip with the bainite structure formed therein leaves the device according to the invention.
  • further devices can provide for the aftertreatment known per se, for example a tempering furnace and / or cutting devices for separating the strip steel into a plurality of strips.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
EP14164750.3A 2014-04-15 2014-04-15 Procédé et dispositif de fabrication d'une feuille d'acier avec une structure bainitique Withdrawn EP2933342A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP14164750.3A EP2933342A1 (fr) 2014-04-15 2014-04-15 Procédé et dispositif de fabrication d'une feuille d'acier avec une structure bainitique
BR112016023820A BR112016023820A2 (pt) 2014-04-15 2015-04-15 método e aparelho para produção de uma tira de aço
PCT/EP2015/058213 WO2015158795A1 (fr) 2014-04-15 2015-04-15 Procédé et dispositif de fabrication d'un feuillard d'acier
EP15716060.7A EP3132062A1 (fr) 2014-04-15 2015-04-15 Procédé et dispositif de fabrication d'un feuillard d'acier
CN201580020127.2A CN106460081A (zh) 2014-04-15 2015-04-15 用于制造带钢的方法和设备
US15/304,403 US20170044643A1 (en) 2014-04-15 2015-04-15 Method and apparatus for producing a steel strip
KR1020167031488A KR20170012224A (ko) 2014-04-15 2015-04-15 강 스트립을 제조하기 위한 방법 및 장치
JP2016562215A JP2017514996A (ja) 2014-04-15 2015-04-15 鋼ストリップを作成する方法及び装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14164750.3A EP2933342A1 (fr) 2014-04-15 2014-04-15 Procédé et dispositif de fabrication d'une feuille d'acier avec une structure bainitique

Publications (1)

Publication Number Publication Date
EP2933342A1 true EP2933342A1 (fr) 2015-10-21

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EP14164750.3A Withdrawn EP2933342A1 (fr) 2014-04-15 2014-04-15 Procédé et dispositif de fabrication d'une feuille d'acier avec une structure bainitique
EP15716060.7A Withdrawn EP3132062A1 (fr) 2014-04-15 2015-04-15 Procédé et dispositif de fabrication d'un feuillard d'acier

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EP15716060.7A Withdrawn EP3132062A1 (fr) 2014-04-15 2015-04-15 Procédé et dispositif de fabrication d'un feuillard d'acier

Country Status (7)

Country Link
US (1) US20170044643A1 (fr)
EP (2) EP2933342A1 (fr)
JP (1) JP2017514996A (fr)
KR (1) KR20170012224A (fr)
CN (1) CN106460081A (fr)
BR (1) BR112016023820A2 (fr)
WO (1) WO2015158795A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107746928B (zh) * 2017-11-21 2024-04-12 上海信鹏印刷器材有限公司 模切刀钢带连续调质装置及方法
CN110172555B (zh) * 2019-06-27 2020-12-25 上海交通大学 一种改善钢的表层抗氢脆性能的脱碳工艺
DE102020103276A1 (de) * 2020-02-10 2021-08-12 Benteler Automobiltechnik Gmbh Ofen zur partiellen Erwärmung von Metallbauteilen
CN113046545B (zh) * 2021-03-11 2024-01-30 新余钢铁股份有限公司 窄钢带热处理工艺
CN114891992B (zh) * 2022-05-19 2023-10-13 鞍钢神钢冷轧高强汽车钢板有限公司 一种高强度钢带制备工艺
CN116661401B (zh) * 2023-07-25 2023-11-17 江苏甬金金属科技有限公司 一种不锈钢带生产工艺控制优化方法及系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10238972A1 (de) * 2002-08-20 2004-03-11 C.D. Wälzholz Produktionsgesellschaft mbH Verfahren und Vorrichtung zur Durchlaufvergütung von Bandstahl und entsprechend hergestellter Bandstahl
DE102004054627A1 (de) * 2004-11-11 2006-05-18 Linde Ag Vorrichtung zum Kühlen von langen Gegenständen
DE102005054014B3 (de) 2005-11-10 2007-04-05 C.D. Wälzholz-Brockhaus GmbH Verfahren und Vorrichtung zur kontinuierlichen Ausbildung eines Bainitgefüges in einem Kohlenstoffstahl, insbesondere in einem Bandstahl
DE102005053134A1 (de) * 2005-11-08 2007-05-10 Robert Bosch Gmbh Anlage zur trockenen Umwandlung eines Material-Gefüges von Halbzeugen
US20080197546A1 (en) * 2002-03-25 2008-08-21 Hirohisa Taniguchi Metal heat treatment system hot-gas quenching apparatus and hot-gas heat treatment system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5942733B2 (ja) * 1979-10-31 1984-10-17 川崎製鉄株式会社 鋼帯連続焼鈍設備
FR2738577B1 (fr) * 1995-09-12 1998-03-13 Selas Sa Dispositif de refroidissement d'un produit lamine
BR9702207A (pt) * 1996-05-23 1999-07-20 Nippon Steel Corp Sistema de resfriamento para resfriar uma tira de maneira uniforme na direção da largura da tira em um processo de tratamento térmico de tira contínua
BR9804782A (pt) * 1997-03-14 1999-08-17 Nippon Steel Corp Dispositivo de tratamento t-rmico para a condu-Æo de tratamento t-rmico em tira de a-o por sopro de jato de g s
JP4593976B2 (ja) * 2004-05-31 2010-12-08 株式会社神戸製鋼所 連続焼鈍炉での鋼板のガスジェット冷却装置
FR2931165B1 (fr) * 2008-05-13 2010-11-26 Cmi Thermline Services Dispositif de soufflage de gaz sur une face d'un materiau en bande en defilement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080197546A1 (en) * 2002-03-25 2008-08-21 Hirohisa Taniguchi Metal heat treatment system hot-gas quenching apparatus and hot-gas heat treatment system
DE10238972A1 (de) * 2002-08-20 2004-03-11 C.D. Wälzholz Produktionsgesellschaft mbH Verfahren und Vorrichtung zur Durchlaufvergütung von Bandstahl und entsprechend hergestellter Bandstahl
DE102004054627A1 (de) * 2004-11-11 2006-05-18 Linde Ag Vorrichtung zum Kühlen von langen Gegenständen
DE102005053134A1 (de) * 2005-11-08 2007-05-10 Robert Bosch Gmbh Anlage zur trockenen Umwandlung eines Material-Gefüges von Halbzeugen
DE102005054014B3 (de) 2005-11-10 2007-04-05 C.D. Wälzholz-Brockhaus GmbH Verfahren und Vorrichtung zur kontinuierlichen Ausbildung eines Bainitgefüges in einem Kohlenstoffstahl, insbesondere in einem Bandstahl

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
BRUGNERA C: "PERFORMANCES ET RESULTATS DE LA SECTION DE REFROIDISSEMENT RAPIDE DU RECUIT CONTINU MIXTE DE SOLLAC FLORANGE*", REVUE DE METALLURGIE - CAHIERS D'INFORMATIONS TECHNIQUES, REVUE DE METALLURGIE. PARIS, FR, vol. 89, no. 12, 1 December 1992 (1992-12-01), pages 1093 - 1099, XP000354224, ISSN: 0035-1563 *
LOCHNER HERIBERT ET AL: "New quenching method for continuous hardening and tempering of steel strips to enhance the product quality / Neues Abschrecksystem steigert Produktqualität in kontinuierlichen Vergütungslinien für Stahlbänder", STAHL UND EISEN, VERLAG STAHLEISEN, DUSSELDORF, DE, vol. 128, no. 7, 1 January 2008 (2008-01-01), pages 45 - 48,50, XP009180663, ISSN: 0340-4803 *

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JP2017514996A (ja) 2017-06-08
WO2015158795A1 (fr) 2015-10-22

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