EP0069616B1 - Dispositif pour le refroidissemnet de spires de fils en acier dans la chaude de laminage - Google Patents

Dispositif pour le refroidissemnet de spires de fils en acier dans la chaude de laminage Download PDF

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Publication number
EP0069616B1
EP0069616B1 EP19820401083 EP82401083A EP0069616B1 EP 0069616 B1 EP0069616 B1 EP 0069616B1 EP 19820401083 EP19820401083 EP 19820401083 EP 82401083 A EP82401083 A EP 82401083A EP 0069616 B1 EP0069616 B1 EP 0069616B1
Authority
EP
European Patent Office
Prior art keywords
baffle plate
upper wall
louvres
air
turns
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.)
Expired
Application number
EP19820401083
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0069616A1 (fr
Inventor
Robert Alberny
Dominique Duverger
Christian Poette
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.)
Institut de Recherches de la Siderurgie Francaise IRSID
Original Assignee
Institut de Recherches de la Siderurgie Francaise IRSID
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 Institut de Recherches de la Siderurgie Francaise IRSID filed Critical Institut de Recherches de la Siderurgie Francaise IRSID
Publication of EP0069616A1 publication Critical patent/EP0069616A1/fr
Application granted granted Critical
Publication of EP0069616B1 publication Critical patent/EP0069616B1/fr
Expired legal-status Critical Current

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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
    • B21B45/0203—Cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
    • B21C47/262—Treatment of a wire, while in the form of overlapping non-concentric rings
    • 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

Definitions

  • the present invention relates to the cooling of turns of steel wires in the hot rolling mill.
  • Certain winding cooling devices currently used include a conveyor formed by a series of blowing boxes above which the turns move in spread form and are cooled by blowing air through openings, or openings, present on the boxes. so that the transformation) ⁇ ⁇ of the steel occurs at a determined speed.
  • the object of the present invention is precisely to solve the problem described above. More particularly, the object of the invention is to provide a device making it possible to improve the efficiency and the homogeneity of the cooling of turns of steel wires.
  • the subject of the invention is a device for the accelerated cooling of turns of steel wires in the hot rolling, of the type of those which include a conveyor formed by a series of blowing boxes whose upper wall has openings lateral and central, called “gills", by which air is blown on the turns of wires which move above the upper wall of the boxes, the downstream part relative to the direction of movement of the turns of each of said gills being provided with a plate, called "wing”, which is inclined towards the inside of the box and towards the upstream part of the hole (FR-A-2297679).
  • a conveyor formed by a series of blowing boxes whose upper wall has openings lateral and central, called “gills”, by which air is blown on the turns of wires which move above the upper wall of the boxes, the downstream part relative to the direction of movement of the turns of each of said gills being provided with a plate, called “wing”, which is inclined towards the inside of the box and towards the upstream part of the hole (FR-A-2297679).
  • the device is characterized in that, at least for some of the gills, the angle of inclination of the wing relative to the upper wall of the box is less than 20 ° and said wing is extended by a plate, called "fin", which is parallel to the upper wall of the box, so as to delimit a passage of the blown air.
  • the wing is a rectangular plate whose sides are provided with vertical edges.
  • the wing is a plate which has the shape of a trapezoid whose large base corresponds to the downstream part of the louver and whose sides, provided with vertical edges, an angle of 60 ° to 85 ° with the downstream part of the hearing.
  • the wing is a plate which has the shape of a rectangular trapezium whose large base corresponds to the downstream part of the gutter and whose sides are provided with vertical edges, the side located towards the central part of the box making an angle of 60 ° to 85 ° with the downstream part of the hearing.
  • a water nozzle is placed at the outlet of the passage delimited between the fin and the upper wall of the box, said nozzle being oriented so that the water jet is parallel to the wing.
  • water can be injected in the form of finely divided droplets or in the form of vapor.
  • the configuration of the vents of the device according to the invention allows more uniform continuous cooling.
  • the blown air circulates at high speed along the bed of the turns of the wires. It should be noted that the air blown by the passage delimited between the upper wall of the boxes and the fin allows a turbulent flow plated at its outlet from the hearing against the upper wall, which allows very effective cooling.
  • vents according to the invention are only necessary in the cooling zones where there is a risk of recalescence of the steel wires.
  • the cooling device is located after the finishing cages and a winding head (not shown in the figures) placed in series.
  • This device constitutes a conveyor comprising a series of blower boxes 1, called “ventilation” whose upper wall 2 has openings called “gills”, namely, two lateral series of gills 3 and 4 and a central series of gills 5.
  • the turns of steel wires 6 move in direction A (indicated by the arrow) by means of conveyor chains 7 and 7 ′ which are mounted above the upper wall 2 of the boxes.
  • each box 1 is provided with a fan 8 in order to blow air through the openings 3, 4 and 5 on the turns 6. It goes without saying that each box 1 has several openings 3, 4 and 5 on its upper wall 2, although FIG. 2 only shows a hole 5 to simplify the explanations.
  • the plate 9 has the shape of a trapezoid for the central vents 5, and the shape of a rectangular trapezium for the lateral vents 3 and 4.
  • This preferred configuration allows a better cooling of the portions of turns 6 at the level of the chains 7 and 7 ': in fact, the air arrives the passage 11, delimited between the fin 10 and the upper wall 2 of the box; it then circulates on the inclined plate 9 and, thanks to the particular geometry of this plate 9, is oriented towards the chains 7 and 7 '.
  • the angle of inclination a of the wing 9 is less than 20 ° and preferably about 10 °.
  • the plate 10 of rectangular shape called "fin", which is parallel to the upper wall 2 so as to delimit the passage of the blown air 11, can be fixed to the wing 9 by suitable means, for example by welding.
  • the nozzle 12 is placed at the outlet of the passage 11, that is to say in the vicinity of the end of the fin 10 adjacent to the wing 9.
  • the nozzle 12 is connected to a tube 13 which passes through the fin and which is itself connected to a water pipe 14.
  • the nozzle 12 is preferably of the flat jet type. It is oriented so that the water jet is parallel to wing 9.
  • Water is preferably injected in the form of vapor.
  • the injected vapor is cooled by the blown air and transformed into a very fine mist, which is preferable for obtaining rapid and uniform cooling of the turns of the wires 6.
  • FIG. 2 shows a compact water-compressed air ramp 15 placed above the bed of the turns of wires 6.
  • the compact ramp 15 is supplied with water by a tube 16 and with air by a tube 17. can use this compact boom 15 independently or simultaneously with the nozzle 12.
  • the steel wires are cooled with water to a temperature of 650 to 800 ° C and min in turns by means of a head (not shown in the figures) for the depositing turns on the conveyor chains 7 and 7 '.
  • the spread turns of wire 6 thus formed are then moved by chains 7 and 7 'a short distance above the upper walls 2 of the boxes 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
EP19820401083 1981-06-22 1982-06-15 Dispositif pour le refroidissemnet de spires de fils en acier dans la chaude de laminage Expired EP0069616B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8112456 1981-06-22
FR8112456A FR2507930A1 (fr) 1981-06-22 1981-06-22 Dispositif pour le refroidissement des spires de fils en acier dans la chaude de laminage

Publications (2)

Publication Number Publication Date
EP0069616A1 EP0069616A1 (fr) 1983-01-12
EP0069616B1 true EP0069616B1 (fr) 1984-12-12

Family

ID=9259851

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820401083 Expired EP0069616B1 (fr) 1981-06-22 1982-06-15 Dispositif pour le refroidissemnet de spires de fils en acier dans la chaude de laminage

Country Status (3)

Country Link
EP (1) EP0069616B1 (OSRAM)
DE (1) DE3261534D1 (OSRAM)
FR (1) FR2507930A1 (OSRAM)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8360480U1 (it) * 1983-11-28 1985-05-28 Danieli Off Mecc Impianto di formatura e trattamento termico di matasse compatte e spire di laminato.
IN164702B (OSRAM) * 1984-10-09 1989-05-13 Morgan Construction Co
JP2721861B2 (ja) * 1988-09-16 1998-03-04 トーア・スチール株式会社 熱間圧延鋼線材の直接急冷方法
US5871596A (en) * 1997-04-08 1999-02-16 Morgan Construction Company Apparatus and method for cooling hot rolled steel rod

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE328602B (OSRAM) * 1962-08-24 1970-09-21 Morgan Construction Co
GB1323757A (en) * 1969-12-01 1973-07-18 Nippon Kokan Kk Method and apparatus for cooling hot metals
US3940967A (en) * 1975-01-10 1976-03-02 Morgan Construction Company Apparatus for controlled cooling hot rolled steel rod in direct sequence with rod mill
FR2297679A1 (fr) * 1975-01-18 1976-08-13 Kobe Steel Ltd Procede et machine pour refroidir des barres apres leur laminage a chaud
US4168993A (en) * 1978-08-10 1979-09-25 Morgan Construction Company Process and apparatus for sequentially forming and treating steel rod

Also Published As

Publication number Publication date
FR2507930B1 (OSRAM) 1983-11-10
EP0069616A1 (fr) 1983-01-12
DE3261534D1 (en) 1985-01-24
FR2507930A1 (fr) 1982-12-24

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