EP0545145A1 - Fabrication de pièces poreuses à base de cuivre comme un produit semi-fini pour un traitement d'usinage - Google Patents

Fabrication de pièces poreuses à base de cuivre comme un produit semi-fini pour un traitement d'usinage Download PDF

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Publication number
EP0545145A1
EP0545145A1 EP92119677A EP92119677A EP0545145A1 EP 0545145 A1 EP0545145 A1 EP 0545145A1 EP 92119677 A EP92119677 A EP 92119677A EP 92119677 A EP92119677 A EP 92119677A EP 0545145 A1 EP0545145 A1 EP 0545145A1
Authority
EP
European Patent Office
Prior art keywords
maximum
copper
optional components
alloy
preform
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.)
Granted
Application number
EP92119677A
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German (de)
English (en)
Other versions
EP0545145B1 (fr
Inventor
Wolfgang Dr. rer. nat. Dürrschnabel
Isabell Dr. Rer. Nat.-Dipl.-Ing. Buresch
Dieter Dr.-Ing. Stock
Hilmar R. Dr.-Ing. Müller
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.)
Wieland Werke AG
Original Assignee
Wieland Werke AG
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Publication date
Application filed by Wieland Werke AG filed Critical Wieland Werke AG
Publication of EP0545145A1 publication Critical patent/EP0545145A1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B22F3/11—Making porous workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/115—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by spraying molten metal, i.e. spray sintering, spray casting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/0425—Copper-based alloys

Definitions

  • the invention relates to the use of a pore-containing copper material.
  • the pores can have three-dimensional dimensions, but they can also be pressed into almost two-dimensional structures by mechanical deformation of the matrix.
  • Semi-finished products made of copper alloys are widely used for the production of parts in which machining work such as turning, drilling and milling must be carried out. These alloys usually contain additives such as lead or tellurium, which act as chip breakers and at the same time facilitate the economic processing of semi-finished products in the form of tubes, rods, sheets or strips made of the alloys mentioned into small parts.
  • the object of the invention is therefore to provide a semi-finished product made of a copper material suitable for machining work, which is hygienically perfect and, in particular, can also be produced economically.
  • the pores contained in the copper material are used as chip breakers.
  • the pores mean locally limited weakening of the material, which leads to the chips breaking during the cutting process.
  • Porous copper materials as such are sufficiently well known, however, the efforts of the experts to date have always been aimed at removing the pores as completely as possible in order to achieve the best possible properties of the copper material (cf. for example WO90 / 11.852).
  • the volume fraction of the pores is 0.05 to 10%. Furthermore, it is advantageous if the pores are gas-filled, because while the porous copper material is processed, the remaining pores change their shape, but do not close completely because the cavities are stabilized by the gas. In particular, it is recommended if the pores are filled with a gas which is insoluble in copper or a copper alloy, such as nitrogen, noble gas, helium or carbon dioxide.
  • a gas which is insoluble in copper or a copper alloy such as nitrogen, noble gas, helium or carbon dioxide.
  • brass and bronze alloys are preferably used for machining work, but the application of the invention to other copper alloys is readily possible if required.
  • a brass alloy contains in particular 1 to 45% zinc, recommended as optional components individually or in combination aluminum (maximum 10%), nickel (maximum 20%), tin (maximum 6%), silicon (maximum 4%), iron (maximum 2%), manganese (maximum 8%).
  • Other optional components that can be added individually and in combination to achieve special strength properties are chrome, zirconium, titanium, magnesium, phosphorus, antimony (in each case a maximum of 1%).
  • a bronze alloy contains in particular 0.1 to 12% tin, zinc (maximum 6%), nickel (maximum 5%), iron (maximum 4%) as additional components individually or in combination are recommended as well as additional optional components for setting special properties Elements phosphorus, chrome, zirconium, titanium, magnesium (maximum 1% each).
  • An aluminum bronze alloy contains in particular 1 to 10% aluminum and, as optional components, individually or in combination iron (maximum 5%), nickel (maximum 8%), silicon (maximum 4%), manganese (maximum 5%), tin (maximum 3%) and as additional optional components chrome, titanium, zircon, magnesium, phosphorus, up to a maximum of 1% individually or in combination.
  • a low-alloy copper alloy contains either individually or in combination phosphor (maximum 0.5%), iron (maximum 4%), tin (maximum 3%), nickel (maximum 4%), silicon (maximum 2%), chromium (maximum 2%), cobalt (maximum 2%), beryllium (maximum 2%) and as additional optional components titanium, zircon, magnesium, manganese, arsenic, zinc up to a maximum of 1% individually or in combination.
  • the above-mentioned semifinished products according to the invention can then be produced with the hot and cold forming devices available in many semifinished factories if the preforms required for the production are available from an economical preliminary stage of production.
  • a preform is preferably produced from copper powder or copper alloy powder and sintered, the mean particle size of the copper or copper alloy powder being 2 to 3000 ⁇ m. Sintering in an atmosphere which contains gaseous components which are insoluble in copper and copper alloys is preferred.
  • the mean droplet diameter is preferably 5 to 200 microns.
  • a powder of copper with a grain size of 25 ⁇ m obtained by atomization is mixed with a lubricant (stearic acid) in the usual way and pressed to a green compact of 95% density.
  • the green body becomes after one Temperature program led up to the sintering temperature so that the lubricant is expelled.
  • the sintering temperature is 1000 ° C, the sintering time 2.5 h.
  • Fission gas obtained from ammonia at atmospheric pressure is used as the sintering atmosphere. After sintering, the body now has a density of 98.5% of the theoretical and contains closed pores.
  • the sintered body is cold worked at room temperature by rolling by about 30%, the pores being stretched. This creates a structure as is characterized in FIG. 1a on a longitudinal section and in FIG. 1b on a transverse section (magnification 200: 1).
  • the material is interspersed with evenly fine pore tubules.
  • Example 2 The procedure is the same as in Example 1 , with the difference that now coarser powder with a grain size of 25 to 50 ⁇ m is used. This results in a somewhat coarser pore structure after cold forming, as can be seen from the cross section in FIG. 4.
  • Fig. 5 L: longitudinal turning, P: face turning.
  • a melt of CuFe2P with the composition 2.3% iron, 0.022% phosphorus, the rest copper and usual impurities is sprayed with the help of the spray compacting process (OSPREY process) to an approximately 30 mm thick plate. Pure nitrogen is used as the spray gas.
  • the plate is milled on the outside, then heated to 930 ° C and cold rolled by 40%. A piece for turning tests is worked out from the rolled sheet. This rod has a density of 98.5% of the theoretical.
  • the bar again produces much shorter chips than those which were produced from a sample of cast and hot-rolled plate using the usual method.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Fodder In General (AREA)
  • Radiation-Therapy Devices (AREA)
  • Manufacture And Refinement Of Metals (AREA)
EP92119677A 1991-11-28 1992-11-19 Fabrication de pièces poreuses à base de cuivre comme un produit semi-fini pour un traitement d'usinage Expired - Lifetime EP0545145B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4139063A DE4139063C2 (de) 1991-11-28 1991-11-28 Verfahren zur Verbesserung der Zerspanbarkeit von Halbzeug aus Kupferwerkstoffen
DE4139063 1991-11-28

Publications (2)

Publication Number Publication Date
EP0545145A1 true EP0545145A1 (fr) 1993-06-09
EP0545145B1 EP0545145B1 (fr) 1996-07-31

Family

ID=6445728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92119677A Expired - Lifetime EP0545145B1 (fr) 1991-11-28 1992-11-19 Fabrication de pièces poreuses à base de cuivre comme un produit semi-fini pour un traitement d'usinage

Country Status (4)

Country Link
EP (1) EP0545145B1 (fr)
JP (1) JPH06192772A (fr)
DE (2) DE4139063C2 (fr)
ES (1) ES2090462T3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8506730B2 (en) 1998-10-09 2013-08-13 Mitsubishi Shindoh Co., Ltd. Copper/zinc alloys having low levels of lead and good machinability
US7056396B2 (en) 1998-10-09 2006-06-06 Sambo Copper Alloy Co., Ltd. Copper/zinc alloys having low levels of lead and good machinability
DE10043278A1 (de) * 2000-09-02 2002-03-28 Berkenhoff Gmbh Legierung, insbesondere Draht für Brillengestelle
CN101098976B (zh) 2005-09-22 2014-08-13 三菱伸铜株式会社 含有极少量铅的易切削铜合金
JP2007211325A (ja) * 2006-02-13 2007-08-23 Sanbo Copper Alloy Co Ltd 半融合金鋳造用原料アルミニウム青銅合金
US8273192B2 (en) * 2008-06-11 2012-09-25 Xiamen Lota International Co., Ltd. Lead-free, bismuth-free free-cutting phosphorous brass alloy
DE102009002894A1 (de) * 2009-05-07 2010-11-18 Federal-Mogul Wiesbaden Gmbh Gleitlagermaterial
CA2889459A1 (fr) 2012-10-26 2014-05-01 Sloan Valve Company Alliage de cuivre antimicrobien blanc
JP6177441B2 (ja) * 2013-10-07 2017-08-09 スローン ヴァルヴ カンパニー 抗菌性白色銅合金
DE102015004221A1 (de) * 2015-03-31 2016-10-06 Wieland-Werke Ag Kupfer-Zink-Legierung, bandförmiger Werkstoff daraus, Verfahren zur Herstellung eines Halbzeugs aus einer Kupfer-Zink-Legierung und Gleitelemente aus einer Kupfer-Zink-Legierung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881511A (en) * 1956-08-14 1959-04-14 Gen Motors Corp Highly wear-resistant sintered powdered metal
US3826301A (en) * 1971-10-26 1974-07-30 R Brooks Method and apparatus for manufacturing precision articles from molten articles
US4604259A (en) * 1983-10-11 1986-08-05 Scm Corporation Process for making copper-rich metal shapes by powder metallurgy
EP0454229A1 (fr) * 1990-04-20 1991-10-30 Shell Internationale Researchmaatschappij B.V. Alliage de cuivre et procédé pour sa fabrication
EP0456591A1 (fr) * 1990-05-11 1991-11-13 Trefimetaux Alliages de cuivre à décomposition spinodale et leur procédé d'obtention
EP0457478A1 (fr) * 1990-05-15 1991-11-21 AT&T Corp. Alliages de corroyage à base de cuivre, à haute usinabilité et exemptes de plomb

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2393906A (en) * 1943-09-04 1946-01-29 Mallory & Co Inc P R Metal composition and bearing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2881511A (en) * 1956-08-14 1959-04-14 Gen Motors Corp Highly wear-resistant sintered powdered metal
US3826301A (en) * 1971-10-26 1974-07-30 R Brooks Method and apparatus for manufacturing precision articles from molten articles
US4604259A (en) * 1983-10-11 1986-08-05 Scm Corporation Process for making copper-rich metal shapes by powder metallurgy
EP0454229A1 (fr) * 1990-04-20 1991-10-30 Shell Internationale Researchmaatschappij B.V. Alliage de cuivre et procédé pour sa fabrication
EP0456591A1 (fr) * 1990-05-11 1991-11-13 Trefimetaux Alliages de cuivre à décomposition spinodale et leur procédé d'obtention
EP0457478A1 (fr) * 1990-05-15 1991-11-21 AT&T Corp. Alliages de corroyage à base de cuivre, à haute usinabilité et exemptes de plomb

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Derwent Publications Ltd., London, GB; AN 77-39283Y & SU-A-511 362 (PERM POLY) 3. September 1976 *
'METALS HANDBOOK' 1984 , AMERICAN SOCIETY FOR METALS , OHIO 9th Edition, Band 7 "Powder Metallurgy" *
'METALS HANDBOOK' 1984 , AMERICAN SOCIETY FOR METALS , OHIO 9th Edition, Band 7; "Powder Metallurgy" *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 077 (M-1214)25. Februar 1992 & JP-A-32 64 187 ( TAKARASAWAA KATSUYUKI ) 25. November 1991 *

Also Published As

Publication number Publication date
DE4139063A1 (de) 1993-06-03
DE59206853D1 (de) 1996-09-05
DE4139063C2 (de) 1993-09-30
ES2090462T3 (es) 1996-10-16
JPH06192772A (ja) 1994-07-12
EP0545145B1 (fr) 1996-07-31

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