BE851213A - CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS - Google Patents

CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS

Info

Publication number
BE851213A
BE851213A BE6045871A BE6045871A BE851213A BE 851213 A BE851213 A BE 851213A BE 6045871 A BE6045871 A BE 6045871A BE 6045871 A BE6045871 A BE 6045871A BE 851213 A BE851213 A BE 851213A
Authority
BE
Belgium
Prior art keywords
bath
products
cooling process
control cooling
stirring
Prior art date
Application number
BE6045871A
Other languages
French (fr)
Inventor
P A Paulus
M Economopoulos
Original Assignee
Ct De Rech S Metallurg A S B L
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
Priority to BE6045871A priority Critical patent/BE851213A/en
Application filed by Ct De Rech S Metallurg A S B L filed Critical Ct De Rech S Metallurg A S B L
Publication of BE851213A publication Critical patent/BE851213A/en
Priority to CA295,946A priority patent/CA1097197A/en
Priority to US05/874,629 priority patent/US4395022A/en
Priority to AU33004/78A priority patent/AU517058B2/en
Priority to DE19782804661 priority patent/DE2804661A1/en
Priority to ES466665A priority patent/ES466665A1/en
Priority to NL7801307A priority patent/NL7801307A/en
Priority to JP1204578A priority patent/JPS53102811A/en
Priority to LU79012A priority patent/LU79012A1/en
Priority to GB5100/78A priority patent/GB1578507A/en
Priority to SE7801473A priority patent/SE443375B/en
Priority to FR7804461A priority patent/FR2379608A1/en
Priority to ES471101A priority patent/ES471101A1/en

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
    • 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
    • C21D1/64—Quenching devices for bath quenching with circulating liquids
    • 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
    • C21D1/60—Aqueous agents
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • 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
    • C21D9/5732—Continuous furnaces for strip or wire with cooling of wires; of rods

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 Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Description

       

  La présente invention est relative à un procédé de refroidissement contrôlé de produits métallurgiques, et en particulier, de fils, barres et produits plats, tels que des tôles, notamment en acier.

  
Il a déjà été mis au point de nombreux procédés de refroidissement contrôlé, dont le but est de conférer aux produits métallurgiques, une microstructure et des propriétés mécaniques comparables à celles par exemple obtenues par les traitements bien connus de patentage au plomb. Ces procédés de refroidissement sont généralement mis en oeuvre à la sortie de la dernière cage de laminoir et consistent à mettre les produits qui sont à haute température en contact avec un milieu dont le coefficient de transfert calorifique est très important. Le demandeur a lui-même déjà préconisé d'utiliser un milieu constitué d'une solution aqueuse et notamment un bain d'eau chaude maintenue à sa température d'ébullition, mais d'autres milieux sont connus, tels que par exemple un brouillard salin ou non, un lit fluidisé, etc...

  
La valeur du coefficient de transfert calorifique du milieu de refroidissement est fondamentale dans des  procédés de ce genre pour atteindre le résultat recherché.

  
De nombreuses expériences sont encore effectuées dans le monde entier, en vue d'améliorer les échanges calorifiques des différents milieux utilisés, car il s'agit de phénomènes complexes dans lesquels interviennent un grand nombre de facteurs. Certaines solutions ont été trouvées, mais elles

  
 <EMI ID=1.1> 

  
teuses, ou de compliquer excessivement l'opération.

  
La présente invention a pour objet un procédé permettant de remédier à ces inconvénients.

  
Le procédé, objet de la présente invention, dans lequel on fait subir un refroidissement contrôlé à des produits métallurgiques tels que des fils, des barres ou des tôles en les plongeant dans un bain maintenu à une température adéquate, par exemple un bain d'eau chaude maintenue

  
à sa température d'ébullition, est essentiellement caractérisé en ce que l'on provoque le brassage du dit bain au . cours de l'opération.

  
Cette façon d'agir améliore le coefficient de transfert calorifique du dit bain, ce qui, dans certaines applications; permet de mieux contrôler le refroidissement. 

  
Suivant l'invention, le brassage est appliqué à un bain aqueux à ébullition.

  
Egalement suivant l'invention, on peut provoquer le brassage du bain, par l'intermédiaire de moyens mécaniques.

  
Suivant une variante de l'invention, on provoque le brassage du bain par l'intermédiaire d'un fluide, par exemple au moyen de gicleurs immergés dans le dit bain. 

REVENDICATIONS

  
1. Procédé de refroidissement contrôlé de produits métallurgiques, tels que des fils, des barres ou des tôles, notamment en acier, dans lequel on plonge les dits produits dans un bain maintenu à une température adéquate, caractérisé en ce que l'on provoque le brassage du bain au cours de l'opération.



  The present invention relates to a method for the controlled cooling of metallurgical products, and in particular of wires, bars and flat products, such as sheets, in particular made of steel.

  
Numerous controlled cooling processes have already been developed, the aim of which is to give metallurgical products a microstructure and mechanical properties comparable to those obtained, for example, by well-known lead patenting treatments. These cooling processes are generally implemented at the outlet of the last rolling stand and consist in placing the products which are at high temperature in contact with a medium whose heat transfer coefficient is very high. The applicant has himself already recommended using a medium consisting of an aqueous solution and in particular a hot water bath maintained at its boiling temperature, but other media are known, such as for example a salt spray. or not, a fluidized bed, etc ...

  
The value of the heat transfer coefficient of the cooling medium is fundamental in such processes to achieve the desired result.

  
Numerous experiments are still carried out all over the world, with a view to improving the heat exchange of the various media used, because these are complex phenomena in which a large number of factors intervene. Some solutions have been found, but they

  
 <EMI ID = 1.1>

  
teuses, or excessively complicate the operation.

  
The object of the present invention is a method making it possible to remedy these drawbacks.

  
The method, object of the present invention, in which a controlled cooling is subjected to metallurgical products such as wires, bars or sheets by immersing them in a bath maintained at an adequate temperature, for example a water bath maintained hot

  
at its boiling point, is essentially characterized in that it causes the stirring of said bath. during the operation.

  
This way of acting improves the heat transfer coefficient of said bath, which, in certain applications; allows better cooling control.

  
According to the invention, the stirring is applied to a boiling aqueous bath.

  
Also according to the invention, the bath can be stirred by means of mechanical means.

  
According to a variant of the invention, the bath is stirred by means of a fluid, for example by means of nozzles submerged in said bath.

CLAIMS

  
1. Process for controlled cooling of metallurgical products, such as wires, bars or sheets, in particular steel, in which the said products are immersed in a bath maintained at an adequate temperature, characterized in that the stirring of the bath during the operation.

Claims (1)

2. Procédé suivant la revendication 1, caractérisé en ce que le brassage est appliqué à un bain aqueux à ébullition. 2. Method according to claim 1, characterized in that the stirring is applied to an aqueous boiling bath. 3. Procédé suivant l'une ou l'autre des revendications 1 et 2, caractérisé en ce que l'on provoque le brassage du bain par l'intermédiaire de moyens mécaniques. 3. Method according to either of claims 1 and 2, characterized in that one causes the stirring of the bath by means of mechanical means. 4. Procédé suivant l'une ou l'autre des revendications 1 et 2, caractérisé en ce que l'on provoque le brassage du bain par l'intermédiaire d'un fluide. 4. A method according to either of claims 1 and 2, characterized in that one causes the stirring of the bath by means of a fluid. 5. Procédé suivant la revendication 4, carac- <EMI ID=2.1> 5. Method according to claim 4, charac- <EMI ID = 2.1> intermédiaire de gicleurs immergés dans le dit bain. intermediate sprinklers submerged in said bath.
BE6045871A 1977-02-08 1977-02-08 CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS BE851213A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
BE6045871A BE851213A (en) 1977-02-08 1977-02-08 CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS
CA295,946A CA1097197A (en) 1977-02-08 1978-01-31 Method of and apparatus for controlled cooling of metallurgical products
US05/874,629 US4395022A (en) 1977-02-08 1978-02-02 Method of and apparatus for controlled cooling of metallurgical products
AU33004/78A AU517058B2 (en) 1977-02-08 1978-02-03 Controlling cooling of metallurgical products
DE19782804661 DE2804661A1 (en) 1977-02-08 1978-02-03 PROCESS FOR THE CONTROLLED COOLING OF METAL PRODUCTS AND DEVICE FOR CARRYING OUT THIS PROCESS
ES466665A ES466665A1 (en) 1977-02-08 1978-02-04 Method of and apparatus for controlled cooling of metallurgical products
NL7801307A NL7801307A (en) 1977-02-08 1978-02-06 METHOD AND EQUIPMENT FOR THE CONTROLLED COOLING OF METAL PRODUCTS.
JP1204578A JPS53102811A (en) 1977-02-08 1978-02-07 Control cooling method and apparatus of metal article
LU79012A LU79012A1 (en) 1977-02-08 1978-02-07 METHOD AND DEVICE FOR THE CONTROLLED COOLING OF METALLURGIC PRODUCTS
GB5100/78A GB1578507A (en) 1977-02-08 1978-02-08 Method of and apparatus for controlled cooling of metallurgical products
SE7801473A SE443375B (en) 1977-02-08 1978-02-08 PROCEDURE AND EQUIPMENT FOR REGULATED COOLING OF WIRE, BAR OR PLATE
FR7804461A FR2379608A1 (en) 1977-02-08 1978-02-08 METHOD AND DEVICE FOR THE CONTROLLED COOLING OF METALLURGIC PRODUCTS
ES471101A ES471101A1 (en) 1977-02-08 1978-06-23 Method of and apparatus for controlled cooling of metallurgical products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE6045871A BE851213A (en) 1977-02-08 1977-02-08 CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS

Publications (1)

Publication Number Publication Date
BE851213A true BE851213A (en) 1977-05-31

Family

ID=3874720

Family Applications (1)

Application Number Title Priority Date Filing Date
BE6045871A BE851213A (en) 1977-02-08 1977-02-08 CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS

Country Status (2)

Country Link
AU (1) AU517058B2 (en)
BE (1) BE851213A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379608A1 (en) * 1977-02-08 1978-09-01 Centre Rech Metallurgique METHOD AND DEVICE FOR THE CONTROLLED COOLING OF METALLURGIC PRODUCTS

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2379608A1 (en) * 1977-02-08 1978-09-01 Centre Rech Metallurgique METHOD AND DEVICE FOR THE CONTROLLED COOLING OF METALLURGIC PRODUCTS

Also Published As

Publication number Publication date
AU3300478A (en) 1979-08-09
AU517058B2 (en) 1981-07-09

Similar Documents

Publication Publication Date Title
BE851213A (en) CONTROL COOLING PROCESS OF METALLURGIC PRODUCTS
BR8904844A (en) PROCESS FOR THE MANUFACTURE OF ALUMINUM ALLOY PARTS THAT CONSIDERS GOOD RESISTANCE TO FATIGUE AFTER EXTENDED HOT MAINTENANCE
FI885657A (en) DELAR AV ALUMINIUM LEGERING, SPECIELLT VEVSTAKAR, SOM HAR EN FOERBAETTRAD UTMATTNINGSHAOLLFASTHET OCH TILLVERKNINGSPROCESS.
EP0086408B1 (en) Method and apparatus for heat treating steel
US2465987A (en) Composition and method for removing corrosion from zinc, zinc alloys, and zinc coated metals
GB822059A (en) Method of treating articles of aluminium or aluminium alloy for producing surfaces with a mirror-like lustre
US1440092A (en) Process of forming a rust-resistant coating on metal
US1169397A (en) Process for the oxidation of smooth iron surfaces.
US2881109A (en) Case-hardened, worked steels
US774069A (en) Method of treating sheet iron or steel.
US1104107A (en) Metal-pickling process.
BE847384A (en) PROCESS FOR THE TREATMENT OF MACHINE WIRE.
US1430650A (en) Process of coating and treating materials having an iron base
SU1325094A1 (en) Method of heat treatment of wire
US118882A (en) Improvement in hardening steel
BE827605A (en) PROCESS FOR THE TREATMENT OF MACHINE WIRE IN SOFT STEEL
US52796A (en) Improved process for converting iron into steel
SU392111A1 (en) METHOD OF CONTINUOUSLY-SEQUENTIAL HARDENING OF THIN-WALLED Hollow CYLINDRICAL PRODUCTS
BE754297A (en) Treating steel wire
JPH0215613B2 (en)
US792070A (en) Process of hardening and tempering copper.
SU429142A1 (en) SOLUTION FOR ETCHING STEEL
SU36124A1 (en) Coating method of copper products for its alloys
US379573A (en) Bdwaed w
SU894002A1 (en) Method of thermal treatment of hollow cylindrical articles