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WO2002053303A1 - Procede et dispositif permettant la fabrication d'elements files - Google Patents

Procede et dispositif permettant la fabrication d'elements files Download PDF

Info

Publication number
WO2002053303A1
WO2002053303A1 PCT/US2001/049592 US0149592W WO02053303A1 WO 2002053303 A1 WO2002053303 A1 WO 2002053303A1 US 0149592 W US0149592 W US 0149592W WO 02053303 A1 WO02053303 A1 WO 02053303A1
Authority
WO
WIPO (PCT)
Prior art keywords
web section
unitary
strand
port
micro
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.)
Ceased
Application number
PCT/US2001/049592
Other languages
English (en)
Inventor
Frank F. Kraft
Jerry M. Ziems
Charles E. Downing
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.)
Brazeway Inc
Original Assignee
Brazeway Inc
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 US10/032,054 external-priority patent/US20020121120A1/en
Application filed by Brazeway Inc filed Critical Brazeway Inc
Publication of WO2002053303A1 publication Critical patent/WO2002053303A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels for metal extruding
    • B21C35/02—Removing or drawing-off work
    • B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment 
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, rods or tubes
    • B21C23/085—Making tubes
    • 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
    • B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels for metal extruding
    • B21C35/02—Removing or drawing-off work
    • 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
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages

Definitions

  • the present invention generally relates to a method of manufacturing heat exchanger tubing and, more particularly, relates to a method of simultaneously extruding multiple integral segments of micro-multi- port, heat exchanger tubing in a single extrusion strand.
  • Micro-multi-port tubing generally includes a plurality of internal ports or channels that extend through an extruded body.
  • the plurality of internal ports are each capable of carrying a fluid therethrough.
  • prior art extrusion technology is not capable of economically producing large quantities of this micro-multi-port tubing.
  • prior art extrusion technology typically provides an extrusion die having a single die opening.
  • Material such as an aluminum alloy in the form of a billet is extruded through the die opening in response to pressure being applied by a hydraulic press or ram.
  • the minimum size of the extrusion capable of being formed is dependent upon an extrusion ratio.
  • the extrusion ratio refers to the relationship between the internal cross-sectional area of the billet container and the cross-sectional area of the die opening (i.e., the extrusion profile(s)).
  • the extrusion ratio is often in the range of about 70:1 or less.
  • the extrusion ratio can be from 500:1 to 2000:1. These ratios are significantly higher than conventional extrusion applications and, thus, require either higher force capacity extrusion presses, which require additional cost investment, or reduced diameter billets, which reduces the production efficiency.
  • an advantageous method of manufacturing micro-multi-port tubing includes actuating a hydraulic press to apply a force to a billet to extrude material through a die opening.
  • the die opening defines at least two distinct sections to form a single, unitary, continuous micro-multi-port extrusion strand having at least two distinct segments interconnected by a web section.
  • the method further includes separating the single, multi- segmented, unitary, continuous micro-multi-port extrusion strand to substantially remove and/or reshape the web section to define at least two separate and independent micro-multi-port tubing segments.
  • extrusion segments are extruded from a single strand through an individual die opening.
  • this invention also encompasses multi strand extrusion, in which several multi- segmented profiles are extruded from a single extrusion press.
  • FIG. 1 is a perspective view illustrating a micro-multi-port extrusion system according to the principles of the present invention
  • FIG. 2 is a perspective view illustrating a micro-sized, multi- segmented, multi-void tube extruded from the extrusion system of FIG. 1 ;
  • FIG. 3 is a perspective view illustrating separation of the multi-segmented, multi-void tubes into distinct and independent sections;
  • FIG. 4 is an end view illustrating the multi-segmented, multi- void tube;
  • FIG. 5 is an enlarged end view illustrating the connection between two micro-multi-port tubes.
  • FIG. 6 is an enlarged cross-section view illustrating the connecting web section of the micro-sized, multi-segmented, multi-void tube being cut by a circular cutting blade.
  • the inventive method of and apparatus for simultaneously extruding a continuous micro-multi-port tube strand consisting of at least two coupled extrusion segments, which are later separated, provides a number of distinct advantages over prior art devices.
  • the present invention enables multiple, extremely small, or micro, profiles to be extruded using an existing or small-capacity press that would otherwise be unable to accommodate such high extrusion ratios if the segment was extruded individually.
  • the present invention enables the productivity of existing extrusion systems to be increased directly as the number of extrusion segments extruded simultaneously increases. It should be noted that additional die openings may be used to simultaneously extrude multiple, multi-segment strands.
  • Extrusion system 10 generally includes a press ram 14, a billet 16, and an extrusion die 18.
  • Press ram 14 includes a head portion 20 and a stem portion 22.
  • Head portion 20 of press ram 14 is positioned adjacent a first end 24 of billet 16.
  • Billet 16 is illustrated as being generally cylindrical in shape and having a diameter generally indicated as B.
  • billet 16 is disposed within a container having open ends in accordance with a hot extrusion process. That is, billet 16 is heated to reduce the flow stress of the material and increase ductility.
  • this material is aluminum and, more preferably, is Aluminum Association 1XXX or 3XXX series alloy.
  • An opposing second end 26 of billet 16 is positioned adjacent extrusion die 18.
  • extrusion die 18 includes a die opening 28.
  • Die opening 28 defines an aperture through extrusion die 18 capable of receiving and forming the hot material into multi-segmented strand 12.
  • multi-segmented strand 12 includes a plurality of distinct segments 30 each having a plurality of longitudinal voids 31.
  • the plurality of distinct segments 30 are interconnected via a plurality of webs 32 extending therebetween.
  • the plurality of webs 32 serves to couple adjacent pairs of segments 30 to form a unitary multi- segmented strand 12.
  • the plurality of webs 32 are each preferably small in both height and width to be easily removed or reshaped following extrusion, as will be described below.
  • the plurality of webs 32 are each sufficiently sized to maintain connection of the plurality of distinct segments 30 during post extrusion processes, such as coiling, sizing, lateral cutting, straightening, and the like.
  • each of the plurality of webs 32 further are uniform in shape and thickness, however, varying profiles may also be used.
  • a distinct advantage of the present invention is the ability to extrude micro-multi-port tubing while decreasing the extrusion ratio of extrusion system 10.
  • the extrusion ratio refers to the relationship between the cross-sectional area of billet 16 (constrained by a container) and the cross-sectional area of die opening 28. This value is related to the amount of work required for extrusion and thereby relates to the force capacity of the extrusion press.
  • the cross-sectional area of the die opening is equal to the cross-sectional area of the single extruded profile, A se . For discussion purposes, it will be assumed that this prior art case would produce an extrusion ratio of 4400:1.
  • the cross-sectional area of die opening 28 is equal to the total cross-sectional area of multi-segmented strand 12, which in the case of a dual segment 30 extrusion would equal approximately 2A se .
  • the cross-sectional area of die opening 28 would be greater than 2A se , due to the additional cross-sectional area of the plurality of webs 32.
  • the extrusion ratio is thus reduced to approximately 2200:1.
  • additional segments 30 may also be included to further minimize the extrusion ratio. As described above, the reduction of the extrusion ratio enables existing and/or lower cost presses to be used, thereby reducing the cost of manufacture.
  • Circular cutting blade assembly 34 includes a support rod 36 carrying a plurality of circular cutting blades 38. As best seen in FIG. 6, it is preferable that circular cutting blade 38 is slender to enable a cut generally adjacent a main body portion 40 of segment 30.
  • single multi-segmented strand 12 is further separated into its distinct segments 30 using a plurality of circular cutting blades 38.
  • the plurality of circular cutting blades 38 serves to reshape and remove any excess material of webs 32, thereby require no additional processing.
  • a method of manufacturing micro-multi-port tubing is provided that is capable of simultaneously extruding multiple sections or segments without requiring an increase in press capacity. Furthermore, the method according to present invention enables multiple segments to be extruded from one extrusion die as a single extrusion strand, such that no speed difference between such multiple segments can exist. This enables the multi-sectioned, single strand to be extruded through a single die opening and processed using a single conventional winder system, cutting system, and other post extruding equipment. Moreover, this multi-segmented, single strand method further enables more convenient and efficient post extrusion processing, because the multi-segments can be processed simultaneously. Therefore, the present invention is capable of increasing the production of a given existing system.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)

Abstract

L'invention concerne un procédé permettant de produire des tubes à micro-canaux multiples. Ce procédé consiste à actionner une presse (14) hydraulique de manière à appliquer une force sur une billette (16) afin d'extruder le matériau à travers l'ouverture (28) d'une filière. Cette ouverture (28) de filière définit au moins deux segments distincts permettant la production d'un élément (12) filé unitaire, continu à micro-canaux multiples présentant au moins deux segments (30) distincts interconnectés par une partie (32) centrale. Ce procédé consiste en outre à séparer l'élément (12) continu à micro-canaux multiples comportant au moins deux segments (30) distincts de manière à éliminer et/ou à reformer la partie (32) centrale et à former au moins deux segments (30) de tube à micro-canaux multiples (12) à partir d'un élément (12) filé unitaire.
PCT/US2001/049592 2001-01-03 2001-12-28 Procede et dispositif permettant la fabrication d'elements files Ceased WO2002053303A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US60/259,474 2001-01-03
US10/032,054 2001-12-21
US10/032,054 US20020121120A1 (en) 2001-01-03 2001-12-21 Method and apparatus for manufacturing extruded parts

Publications (1)

Publication Number Publication Date
WO2002053303A1 true WO2002053303A1 (fr) 2002-07-11

Family

ID=21862850

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/049592 Ceased WO2002053303A1 (fr) 2001-01-03 2001-12-28 Procede et dispositif permettant la fabrication d'elements files

Country Status (1)

Country Link
WO (1) WO2002053303A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012005599A1 (fr) * 2010-07-09 2012-01-12 Norsk Hydro Asa Procédé et équipement pour la production de tubes et autres produits de forme allongée
WO2020152168A1 (fr) * 2019-01-22 2020-07-30 Hydro Extruded Solutions As Extrusion à orifices multiples de type en bande (web-mpe)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1061680A (en) * 1965-12-24 1967-03-15 Alfred Jack Gordon Method and apparatus for forming extrusions
JPS56165514A (en) * 1980-05-22 1981-12-19 Hokusei Alum Kk Method and apparatus for manufacturing extruded semihollow shape of aluminum alloy
DE3131155A1 (de) * 1981-08-06 1983-02-24 Julius & August Erbslöh GmbH + Co, 5600 Wuppertal "verfahren zur herstellung von strangpressprofilen aus leichtmetall"
JPH01273610A (ja) * 1988-04-26 1989-11-01 Showa Alum Corp 複数多穴管の一体押出方法
JPH07290154A (ja) * 1994-04-28 1995-11-07 Showa Alum Corp 押出材からなる曲がり品の製造方法
DE19501354C1 (de) * 1995-01-18 1996-04-11 Peri Gmbh Verfahren zur Herstellung eines Gitterträgers
WO2000023205A1 (fr) * 1998-10-20 2000-04-27 Reynolds Aluminium Holland B.V. Procede de fabrication de tubes multi-canaux; tubes multi-canaux ainsi obtenus; filiere d'extrusion et installation permettant de mettre en oeuvre le procede

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1061680A (en) * 1965-12-24 1967-03-15 Alfred Jack Gordon Method and apparatus for forming extrusions
JPS56165514A (en) * 1980-05-22 1981-12-19 Hokusei Alum Kk Method and apparatus for manufacturing extruded semihollow shape of aluminum alloy
DE3131155A1 (de) * 1981-08-06 1983-02-24 Julius & August Erbslöh GmbH + Co, 5600 Wuppertal "verfahren zur herstellung von strangpressprofilen aus leichtmetall"
JPH01273610A (ja) * 1988-04-26 1989-11-01 Showa Alum Corp 複数多穴管の一体押出方法
JPH07290154A (ja) * 1994-04-28 1995-11-07 Showa Alum Corp 押出材からなる曲がり品の製造方法
DE19501354C1 (de) * 1995-01-18 1996-04-11 Peri Gmbh Verfahren zur Herstellung eines Gitterträgers
WO2000023205A1 (fr) * 1998-10-20 2000-04-27 Reynolds Aluminium Holland B.V. Procede de fabrication de tubes multi-canaux; tubes multi-canaux ainsi obtenus; filiere d'extrusion et installation permettant de mettre en oeuvre le procede

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 006, no. 050 (M - 120) 3 April 1982 (1982-04-03) *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 042 (M - 0925) 25 January 1990 (1990-01-25) *
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 03 29 March 1996 (1996-03-29) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012005599A1 (fr) * 2010-07-09 2012-01-12 Norsk Hydro Asa Procédé et équipement pour la production de tubes et autres produits de forme allongée
WO2020152168A1 (fr) * 2019-01-22 2020-07-30 Hydro Extruded Solutions As Extrusion à orifices multiples de type en bande (web-mpe)

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