EP0367716A1 - Procédé de fabrication continue d'un profilé extrudé - Google Patents

Procédé de fabrication continue d'un profilé extrudé Download PDF

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Publication number
EP0367716A1
EP0367716A1 EP89810758A EP89810758A EP0367716A1 EP 0367716 A1 EP0367716 A1 EP 0367716A1 EP 89810758 A EP89810758 A EP 89810758A EP 89810758 A EP89810758 A EP 89810758A EP 0367716 A1 EP0367716 A1 EP 0367716A1
Authority
EP
European Patent Office
Prior art keywords
friction wheel
strand
electromagnetic
extruded profile
pressed
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
EP89810758A
Other languages
German (de)
English (en)
Inventor
Kurt Buxmann
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.)
3A Composites International AG
Original Assignee
Alusuisse Lonza Services 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
Application filed by Alusuisse Lonza Services Ltd filed Critical Alusuisse Lonza Services Ltd
Publication of EP0367716A1 publication Critical patent/EP0367716A1/fr
Ceased 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, 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
    • B21C23/005—Continuous extrusion starting from solid state material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/01—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces
    • B22D11/015—Continuous casting of metals, i.e. casting in indefinite lengths without moulds, e.g. on molten surfaces using magnetic field for conformation, i.e. the metal is not in contact with a mould

Definitions

  • the invention relates to a method for the continuous production of an extruded profile, in particular made of aluminum or an aluminum alloy, a prefabricated strand being fed to a die by means of a friction wheel and pressed by the die.
  • the oxide skin surrounding each individual granule grain has a disruptive effect on the pressed product. This applies especially to higher alloyed materials which tend to undergo stronger oxidation, e.g. AlMg alloys or hard alloys of the AlZnMgCu type.
  • Pre-pressed bars usually lead to perfect product quality, but the production costs are high because an extrusion process must already be carried out. Furthermore, such bars are generally not coiled, so that feeding them into the groove of the friction wheel is difficult.
  • Properzi wire can normally only be made faultlessly with pure aluminum and very weakly alloyed materials. Furthermore, such a wire usually has structural defects such as, for example, central porosity or uneven cell structure.
  • liquid metal is poured into the groove of a cooled friction wheel and the solidified metal is subsequently pressed through a die.
  • this casting technique which is known as the CASTEX process
  • solidification takes place in the groove of the cooled friction wheel.
  • the solidification conditions are comparable to those of Properzi wire. Accordingly, similar casting problems and structural inhomogeneities also occur.
  • the edge shell that solidifies in contact with the groove is subjected to mechanical deformation due to the compression effect of the shoe. This leads to additional structural inhomogeneities, e.g. Signs of segregation, which are reflected in quality defects in the product. Otherwise, the process does not seem to be sufficiently operational for higher-alloy materials.
  • a correspondingly shaped raw product is to be manufactured continuously as a starting material and introduced into the friction wheel in the solidified state.
  • a method according to claim 1 leads to the achievement of the object according to the invention.
  • Preferred embodiments of the method according to the invention result from the further claims.
  • the method according to the invention it is possible to produce a press product of very high quality at very low cost. Due to the solidification in the electromagnetic mold, the raw material has a very fine solidification structure, so that the intermetallic phases embedded in the matrix are finer than the corresponding phases in press bars. Furthermore, the forming structure of the press products produced according to the invention is uniform, while different degrees of forming occur in pressed bars, depending on whether the beginning or end of the press is present. Corresponding differences also arise when using pre-pressed rods as the starting material.
  • Another advantage of the method according to the invention is that the entire range of commercially available aluminum alloys can be produced in this way. There are no restrictions regarding the castability of small-sized rods in the electromagnetic field.
  • a strand 2 is cast by means of an electromagnetic mold 1 and fed directly to the groove 10 of a friction wheel 4 via a pressure wheel 3.
  • the groove 10 of the friction wheel 4 is closed by means of groove covering segments 5 via a press shoe 6.
  • the necessary pressing pressure for forming a profile 9 is built up via a counter segment 8 arranged in the region of the die 7.
  • the forming speed of the friction wheel 4 is the same as the casting speed in the electromagnetic Mold 1.
  • the friction wheel 4 serves as a feed for the strand 2 solidifying in the electromagnetic mold 1.
  • the strand 2 is kept at a temperature of approximately 350 ° C. with the aid of a computer-controlled cooling process.
  • the profile 9 emerging from the friction wheel 4 can be pulled down to the required thickness tolerance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)
  • Extrusion Of Metal (AREA)
EP89810758A 1988-10-31 1989-10-04 Procédé de fabrication continue d'un profilé extrudé Ceased EP0367716A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH405088 1988-10-31
CH4050/88 1988-10-31

Publications (1)

Publication Number Publication Date
EP0367716A1 true EP0367716A1 (fr) 1990-05-09

Family

ID=4268882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810758A Ceased EP0367716A1 (fr) 1988-10-31 1989-10-04 Procédé de fabrication continue d'un profilé extrudé

Country Status (3)

Country Link
US (1) US5052470A (fr)
EP (1) EP0367716A1 (fr)
NO (1) NO894312L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005049369B4 (de) * 2005-10-12 2008-11-20 Technische Universität Clausthal Verfahren zur Herstellung feinkörniger, polykristalliner Werkstoffe oder Werkstücke sowie Strangpressanlage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2602397B2 (ja) * 1993-03-04 1997-04-23 有限会社矢野エンジニアリング 押出加工装置
US6531039B2 (en) 2001-02-21 2003-03-11 Nikko Materials Usa, Inc. Anode for plating a semiconductor wafer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1499809A (en) * 1975-01-24 1978-02-01 Bicc Ltd Method of and apparatus for continuously forming metal ro
GB1516306A (en) * 1975-08-29 1978-07-05 Bicc Ltd Method of and apparatus for continuously forming a flexible elongate metallic member
EP0244254A1 (fr) * 1986-05-01 1987-11-04 Alform Alloys Limited Extrusion de métaux
US4763502A (en) * 1982-09-09 1988-08-16 Amf - Aluteam Metal Forming Gmbh Method and a device for pretreating nonferrous metal for plastic deformation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53135868A (en) * 1977-04-30 1978-11-27 Hitachi Cable Ltd Method and apparatus for manufacture of composite wire
JPS60148651A (ja) * 1984-01-13 1985-08-05 Kawasaki Steel Corp 連続鋳造機
US4718476A (en) * 1986-02-14 1988-01-12 Blaw Knox Corporation Method and apparatus for extrusion casting
JPH0628784B2 (ja) * 1986-02-15 1994-04-20 新日本製鐵株式会社 内部健全性の優れた厚鋼板用連続鋳造スラブの製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1499809A (en) * 1975-01-24 1978-02-01 Bicc Ltd Method of and apparatus for continuously forming metal ro
GB1516306A (en) * 1975-08-29 1978-07-05 Bicc Ltd Method of and apparatus for continuously forming a flexible elongate metallic member
US4763502A (en) * 1982-09-09 1988-08-16 Amf - Aluteam Metal Forming Gmbh Method and a device for pretreating nonferrous metal for plastic deformation
EP0244254A1 (fr) * 1986-05-01 1987-11-04 Alform Alloys Limited Extrusion de métaux

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 6 (M-50)[678], 16. Januar 1981; & JP-A-55 139 113 (FURUKAWA DENKI KOGYO K.K.) 30-10-1980 *
PATENT ABSTRACTS OF JAPAN, Band 7, Nr. 207 (M-242)[1352], 13. September 1983; JP-A-58 103 908 (SUMITOMO DENKI KOGYO K.K.) 21-06-1983 *
PATENT ABSTRACTS OF JAPAN, Band 8, Nr. 90 (M-292)[1572], 25. April 1984; & JP-A-59 007 420 (SUMITOMO DENKI KOGYO K.K.) 14-01-1984 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005049369B4 (de) * 2005-10-12 2008-11-20 Technische Universität Clausthal Verfahren zur Herstellung feinkörniger, polykristalliner Werkstoffe oder Werkstücke sowie Strangpressanlage

Also Published As

Publication number Publication date
NO894312D0 (no) 1989-10-30
NO894312L (no) 1990-05-02
US5052470A (en) 1991-10-01

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