EP0262324A1 - Verfahren zum Schnellabschrecken im Wirbelbett - Google Patents

Verfahren zum Schnellabschrecken im Wirbelbett Download PDF

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Publication number
EP0262324A1
EP0262324A1 EP87110765A EP87110765A EP0262324A1 EP 0262324 A1 EP0262324 A1 EP 0262324A1 EP 87110765 A EP87110765 A EP 87110765A EP 87110765 A EP87110765 A EP 87110765A EP 0262324 A1 EP0262324 A1 EP 0262324A1
Authority
EP
European Patent Office
Prior art keywords
bed
temperature
article
conductivity gas
fluidized
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Withdrawn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
EP87110765A
Other languages
English (en)
French (fr)
Inventor
Jaak Von Den Sype
Mark Anthony Delano
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.)
Union Carbide Corp
Original Assignee
Union Carbide Corp
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 Union Carbide Corp filed Critical Union Carbide Corp
Publication of EP0262324A1 publication Critical patent/EP0262324A1/de
Withdrawn legal-status Critical Current

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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
    • C21D9/52—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
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • 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
    • C21D1/34—Methods of heating
    • C21D1/53—Heating in fluidised beds
    • 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

Definitions

  • Quenching is conventionally carried out in a number of ways.
  • spray quenching a liquid is sprayed onto the object to be quenched.
  • gas quenching the object is placed in a flowing stream of a gas or vapor such as air, nitrogen, argon, helium, hydrogen, steam or combustion products.
  • fog quenching a gas or vapor stream with entrained liquid droplets is directed onto the surface of the object to be quenched.
  • immersion quenching the object is immersed in a liquid bath such as water, brine, oil molten salt, polymer solution, or a liquid cryogen.
  • the process of this invention is particularly useful for the heat treating of steel alloy articles and will be described in detail with reference to this type of heat treating.
  • the quench rate is generally measured by a procedure variously known in the art as the Magnetic Test, General Motors Quenchometer Test, or Nickel Ball Test.
  • the procedure comprises heating a 7/8-inch (22 mm) nickel sphere, weighing approximately 1.8 ounces (50 g) to a given high temperature and then quenching the sphere in the quenchant to be evaluated down to give low temperature. The time it takes for the sphere temperature go from the high to the low temperature is a measure of the quench rate.
  • the initial quench rate as measured by the Nickel Ball Test between the temperatures of 1600°F and 684°F is less than 24 seconds.
  • a fast quench may not always be desirable because of the possibility of stress creation within the alloy. Therefore, if possible without crossing the softer phase threshold, one can reduce the quenching rate by changing the mode of operation of the bed.
  • the process may be carried out with the bed fluidized with a low conductivity gas, or with the bed in a slumped condition.
  • a convenient time to change from fluidization with a high conductivity gas to another bed operating mode is when the article temperature has dropped below the nose temperature.
  • the quenching continues for a period of time and at a quench rate sufficient to achieve the M s temperature of the alloy substantially without forming undesirable softer phases within the part.
  • Step (d) of the austempering treatment can be carried out with the bed slumped or fluidized with a low conductivity gas and one can alternate between these two modes of bed operation.
  • step (d) can be carried out entirely with the bed fluidized with high conductivity gas, but generally and preferably, is carried out in part with the bed fluidized with low conductivity gas or operated in the slumped mode. Step (d) may be conveniently continued until the article has reached ambient or near ambient temperature.
  • Step (d) can be carried out entirely with the bed fluidized with high conductivity gas or step (d) can be carried out in part with the bed fluidized with low conductivity gas or operated in the slumped mode.

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)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)
EP87110765A 1986-09-30 1987-07-24 Verfahren zum Schnellabschrecken im Wirbelbett Withdrawn EP0262324A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US913320 1978-06-07
US91332086A 1986-09-30 1986-09-30

Publications (1)

Publication Number Publication Date
EP0262324A1 true EP0262324A1 (de) 1988-04-06

Family

ID=25433163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87110765A Withdrawn EP0262324A1 (de) 1986-09-30 1987-07-24 Verfahren zum Schnellabschrecken im Wirbelbett

Country Status (6)

Country Link
EP (1) EP0262324A1 (de)
JP (1) JPS6389615A (de)
KR (1) KR880004112A (de)
CN (1) CN87105737A (de)
BR (1) BR8703860A (de)
CA (1) CA1296603C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315975A1 (de) * 1987-11-10 1989-05-17 Union Carbide Corporation Verfahren zum Schnellabschrecken
US12091744B2 (en) 2018-06-13 2024-09-17 Arcelormittal Vacuum deposition facility and method for coating a substrate
US12091739B2 (en) 2018-06-13 2024-09-17 Arcelormittal Vacuum deposition facility and method for coating a substrate

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1311088C (zh) * 2002-01-18 2007-04-18 王新辉 用风对钢丸进行热处理的方法及其流化床装置
CN101333593B (zh) * 2008-07-25 2010-06-30 张家港市东航机械有限公司 钢帘线钢丝淬火流化粒子炉中的低位返砂器
CN101886159B (zh) * 2010-07-13 2011-11-16 贾会平 钢坯加热的方法和装置
WO2020012222A1 (en) * 2018-07-11 2020-01-16 Arcelormittal Method to control the cooling of a metal product

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053704A (en) * 1953-11-27 1962-09-11 Exxon Research Engineering Co Heat treating metals
FR2447968A1 (fr) * 1979-01-30 1980-08-29 Celes Sa Procede de trempe superficielle
EP0118836A2 (de) * 1983-03-07 1984-09-19 Rockwell International Corporation Verfahren zum Kühlen eines erhitzten Werkstücks
EP0144907A2 (de) * 1983-12-05 1985-06-19 Nissan Motor Co., Ltd. Verfahren zur Herstellung von Gegenständen aus Gusseisen mit Kugelgraphit durch Umwandlung in der Bainitstufe
US4612065A (en) * 1982-08-17 1986-09-16 Ruhrgas Aktiengesellschaft Method for the heat treatment of workpieces

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS565917A (en) * 1979-06-28 1981-01-22 Komatsu Ltd Fluidized bed hardening device
JPS6043410B2 (ja) * 1981-11-11 1985-09-27 東レエンジニアリング株式会社 流動層炉による金属熱処理方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053704A (en) * 1953-11-27 1962-09-11 Exxon Research Engineering Co Heat treating metals
FR2447968A1 (fr) * 1979-01-30 1980-08-29 Celes Sa Procede de trempe superficielle
US4612065A (en) * 1982-08-17 1986-09-16 Ruhrgas Aktiengesellschaft Method for the heat treatment of workpieces
EP0118836A2 (de) * 1983-03-07 1984-09-19 Rockwell International Corporation Verfahren zum Kühlen eines erhitzten Werkstücks
EP0144907A2 (de) * 1983-12-05 1985-06-19 Nissan Motor Co., Ltd. Verfahren zur Herstellung von Gegenständen aus Gusseisen mit Kugelgraphit durch Umwandlung in der Bainitstufe

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HÄRTEREI-TECHNISCHE MITTEILUNGEN, vol. 40, no. 5, September-October 1985, pages 195-197, Munich; R. PULKKINEN et al.: "Beschleunigtes Abkühlen von Stahl und Gusseisen in einem Wirbelbett" *
PATENT ABSTRACTS OF JAPAN, vol. 5, no. 54 (C-50)[726], 15th April 1981; & JP-A-56 005 917 (KOMATSU SEISAKUSHO) 22-01-1981 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0315975A1 (de) * 1987-11-10 1989-05-17 Union Carbide Corporation Verfahren zum Schnellabschrecken
US12091744B2 (en) 2018-06-13 2024-09-17 Arcelormittal Vacuum deposition facility and method for coating a substrate
US12091739B2 (en) 2018-06-13 2024-09-17 Arcelormittal Vacuum deposition facility and method for coating a substrate
US12553119B2 (en) 2018-06-13 2026-02-17 Arcelormittal Vacuum deposition facility and method for coating a substrate
US12624441B2 (en) 2018-06-13 2026-05-12 Arcelormittal Vacuum deposition facility and method for coating a substrate

Also Published As

Publication number Publication date
CA1296603C (en) 1992-03-03
CN87105737A (zh) 1988-05-04
JPS6389615A (ja) 1988-04-20
BR8703860A (pt) 1988-05-03
KR880004112A (ko) 1988-06-01

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Inventor name: DELANO, MARK ANTHONY