EP0018827B1 - Procédé et appareil pour l'étirage de fils métalliques - Google Patents

Procédé et appareil pour l'étirage de fils métalliques Download PDF

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Publication number
EP0018827B1
EP0018827B1 EP19800301428 EP80301428A EP0018827B1 EP 0018827 B1 EP0018827 B1 EP 0018827B1 EP 19800301428 EP19800301428 EP 19800301428 EP 80301428 A EP80301428 A EP 80301428A EP 0018827 B1 EP0018827 B1 EP 0018827B1
Authority
EP
European Patent Office
Prior art keywords
wire
block
coolant
sizing opening
liquid coolant
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
EP19800301428
Other languages
German (de)
English (en)
Other versions
EP0018827A1 (fr
Inventor
John Warner Pamplin
Brian Russell Astbury
Richard Shillito
James Justinian Hancock
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.)
Marshall Richards Barcro Ltd
Original Assignee
Marshall Richards Barcro 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.)
Filing date
Publication date
Priority claimed from GB7936943A external-priority patent/GB2038219B/en
Application filed by Marshall Richards Barcro Ltd filed Critical Marshall Richards Barcro Ltd
Publication of EP0018827A1 publication Critical patent/EP0018827A1/fr
Application granted granted Critical
Publication of EP0018827B1 publication Critical patent/EP0018827B1/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
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/12—Die holders; Rotating dies
    • B21C3/14—Die holders combined with devices for guiding the drawing material or combined with devices for cooling heating, or lubricating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/04—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums with two or more dies operating in series
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/14—Drums, e.g. capstans; Connection of grippers thereto; Grippers specially adapted for drawing machines or apparatus of the drum type; Couplings specially adapted for these drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00—Cooling, heating or lubricating drawing material

Definitions

  • the rotary drawing block can be a grooved wheel as described in our co-pending European Patent Application No. 0012592 or a flanged capstan block. In the first case less than one complete turn of wire is wrapped around the drawing block while in the second case a few complete turns of wire will be disposed around the drawing block.
  • the method of the invention is used for the stages of a multi-stage wire drawing operation in which the cross-section of the wire is progressively reduced stage by stage from an input feedstock to the final drawn wire.
  • the wire can be lubricated with a water- insoluble (e.g. a calcium-based) powder or, if electrostatic coating techniques are used to ensure powder coating of clean metal, a watersoluble lubricant powder (e.g. a sodium-based material).
  • a water- insoluble powder e.g. a calcium-based powder
  • a watersoluble lubricant powder e.g. a sodium-based material
  • Drafting pulls of 25,000 Kg are obtainable with area reductions per stage in excess of 40% easily realisable. Although cooling has to be accomplished in a much shorter time than with a prior art capstan machine, we have successfully dissipated 33 KW of power in one stage of a multi-stage apparatus with an output wire temperature from that stage of less than 90°C (representing a temperature increase of less than 75°C). Drafting speeds in excess of 22 m/sec have also been achieved and it is expected that drawing speeds at least equal to the best obtainable in prior art capstan machines can be obtained. Galvanised and un- galvanised ferrous wires can be drawn by the method of the invention.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)

Claims (6)

1. Procédé pour étirer un fil métallique, suivant lequel on tire un fil à travers un lubrifiant, puis à travers un orifice calibré (6, 6') en appliquant le fil sur au moins une partie d'une spire autour d'un tambour de traction tournant (1, 1') pour produire la traction d'étirage nécessaire pour tirer le fil à travers l'orifice calibré, on amène le fil sortant de l'orifice calibré en contact avec un agent de refroidissement (8, 8') différant du lubrifiant et on élimine l'agent de refroidissement du fil en aval du tambour (par l'intermédiaire de 9, 9'), caractérisé en ce qu'au moins une partie initiale de ce fil enroulé sur au moins une partie d'une spire autour du tambour est placée dans un bain (13, 27) de l'agent de refroidissement liquide supporté contre le tambour par un capot (13, 13') qui entoure étroitement le tambour sur une partie substantielle de sa circonférence en aval du point de premier contact du fil avec le tambour.
2. Procédé suivant la revendication 1, dans lequel l'agent de refroidissement liquide refroidit l'élément délimitant l'orifice calibré et forme une colonne de liquide en mouvement qui entoure le fil à sa sortie de l'orifice calibré, caractérisé en ce que la colonne (8, 8') de l'agent de refroidissement reste autour du fil (W, W') lorsqu'il entre en contact avec le tambour.
3. Procédé suivant la revendication 1 ou 2, caractérisé en ce que le fil (W') traverse le bain (27) plus d'une fois avant de quitter le tambour (1').
4. Appareil à tréfiler comprenant un récipient (5) pour un lubrifiant, un orifice calibré (6, 6') pour le fil (W, W'), un dispositif (7, 7') pour fournir un agent de refroidissement liquide destiné à entourer le fil (W, W') qui quitte l'orifice calibré (6, 6') un tambour de traction tournant (1, 1') en aval de l'orifice calibré (6, 6') avec un dispositif (3, 3') pour faire tourner le tambour (1, 1 ') dans un sens visant à étirer le fil, appliqué suivant au moins une partie de spire autour du tambour (1, 1') à travers le récipient 5, un lubrifiant différant de l'agent de refroidissement dans le récipient (5) et l'orifice calibré (6, 6'), un dispositif pour maintenir le fil mouillé par l'agent de refroidissement liquide sur le tambour (1, 1') et un dispositif (9, 9') en aval du tambour (1, 1') pour enlever l'agent de refroidissement liquide du fil, caractérisé en ce qu'un capot (13, 13') est appliqué tout près de la surface de contact avec le fil (24, 26) du tambour (1, 1') sur une partie de spire autour de ce tambour à partir du point de contact initial du fil avec le tambour (1, 1') pour assurer que le fil soit immergé dans un bain (27) de l'agent de refroidissement liquide sur au moins une partie initiale d'une spire du fil sur le tambour (1, 1').
5. Appareil suivant la revendication 4, caractérisé en ce que le tambour (1') est pourvu d'une gorge sans fin (2') formée entre des joues latérales, la gorge pouvant recevoir plusieurs spires disposées côte à côte, le capot (13') étant disposé près des joues latérales sur une partie d'une spire autour du tambour.
6. Appareil suivant la revendication 4 ou 5, caractérisé en ce que le capot (13, 13') peut être rapproché et écarté du tambour (1, 1') pour faciliter l'enfilage de l'appareil.
EP19800301428 1979-05-08 1980-05-01 Procédé et appareil pour l'étirage de fils métalliques Expired EP0018827B1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB7915881 1979-05-08
GB7915881 1979-05-08
GB7917165 1979-05-17
GB7917165 1979-05-17
GB7936943 1979-10-24
GB7936943A GB2038219B (en) 1978-12-12 1979-10-24 Wire drawing method and apparatus

Publications (2)

Publication Number Publication Date
EP0018827A1 EP0018827A1 (fr) 1980-11-12
EP0018827B1 true EP0018827B1 (fr) 1983-07-27

Family

ID=27260716

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800301428 Expired EP0018827B1 (fr) 1979-05-08 1980-05-01 Procédé et appareil pour l'étirage de fils métalliques

Country Status (2)

Country Link
EP (1) EP0018827B1 (fr)
DE (1) DE3064376D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6448619A (en) * 1987-08-18 1989-02-23 Nippon Steel Corp Method for cooling wire rod for drawing

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT32609B (de) * 1904-10-24 1908-04-10 Iroquois Machine Co Fa Verfahren zur Verhinderung des Hartziehens des Drahtes beim Ziehen von Stahldraht u. dgl. durch eine Reihe von Zieheisen in einem Zuge.
FR528642A (fr) * 1920-06-30 1921-11-15 Jean Picotin Perfectionnement aux procédés et aux machines servant à la fabrication des fils métalliques
FR28336E (fr) * 1923-06-20 1925-02-16 Perfectionnement aux procédés et aux machines servant à la fabrication des fils métalliques
GB890376A (en) * 1958-07-30 1962-02-28 British Iron Steel Research Improvements in or relating to cooling
GB1249926A (en) * 1969-03-25 1971-10-13 British Iron Steel Research Wire drawing
FR2234053B1 (fr) * 1973-06-23 1978-08-11 Kobe Steel Ltd
GB2038219B (en) * 1978-12-12 1982-08-18 Marshall Richards Barcro Ltd Wire drawing method and apparatus

Also Published As

Publication number Publication date
DE3064376D1 (en) 1983-09-01
EP0018827A1 (fr) 1980-11-12

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