EP0471048A1 - Produit demi-fini en cuivre ou en alliage de cuivre avec additio n de carbone - Google Patents

Produit demi-fini en cuivre ou en alliage de cuivre avec additio n de carbone

Info

Publication number
EP0471048A1
EP0471048A1 EP91904195A EP91904195A EP0471048A1 EP 0471048 A1 EP0471048 A1 EP 0471048A1 EP 91904195 A EP91904195 A EP 91904195A EP 91904195 A EP91904195 A EP 91904195A EP 0471048 A1 EP0471048 A1 EP 0471048A1
Authority
EP
European Patent Office
Prior art keywords
maximum
semi
finished product
copper
product according
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.)
Withdrawn
Application number
EP91904195A
Other languages
German (de)
English (en)
Inventor
Wolfgang DÜRRSCHNABEL
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
Olin Corp
Original Assignee
Wieland Werke AG
Olin Corp
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 Wieland Werke AG, Olin Corp filed Critical Wieland Werke AG
Publication of EP0471048A1 publication Critical patent/EP0471048A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper

Definitions

  • the invention relates to semi-finished products made of copper or a copper alloy according to the preamble of claim 1.
  • Semi-finished products made of copper alloys with zinc and lead are widely used for the production of parts in which cutting work, such as turning, drilling and milling, has to be carried out. These alloys usually contain between 5 and 40% zinc, as well as between 0.1 and 4% lead, the rest copper.
  • the lead content acts as a chip breaker and facilitates the economical processing of semi-finished products in the form of tubes, rods, sheets or strips made of the above-mentioned alloys into small parts.
  • the object of the invention is therefore to provide a semifinished product of the type mentioned made of a copper material suitable for machining work, which is hygienically perfect and, in particular, can also be produced economically.
  • the copper or copper alloy contains 0.01-10% carbon, preferably 0.01-2% carbon (the percentages relate to the weight). It has surprisingly been found that the addition of lead can be dispensed with entirely if carbon is added to the usual copper alloys instead of lead. It is known that carbon admixtures have a favorable influence on the sliding behavior of sintered bodies based on copper, but all previously known carbon-containing alloys have not been developed for use as semi-finished products but only for use as sliding elements such as sliding bearings, sliding rails and the like (cf. DE-PS 2.545.876 Only processes of powder metallurgy are mentioned as production processes for these mixtures - such as producing a powder mixture, pressing and sintering this mixture to produce individual parts. This route is expensive and is only suitable for a few special products, but not for such mass products, as they are made today from the lead-containing brass materials in large numbers and variety.
  • the copper or the copper alloy contains the carbon in the form of graphite or soot particles, the size of which is preferably in the range from approximately 0.01 to 1500 ⁇ m.
  • the lower grain size range is preferably covered by soot, the upper by graphite. If soot is used in pre-agglomerated form, the average size of the agglomerates is between about 10 and 1500 ⁇ m.
  • 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, aluminum (maximum 10%), nickel (maximum 20%), tin (maximum 6%) silicon (maximum 4%), iron (maximum 2%) are recommended as optional components or in combination. ), Manganese (maximum 8%).
  • Other optional components that can be added individually and in combination to achieve special strength properties are chromium, zirconium, titanium, magnesium, phosphorus, antimony (in each case a maximum of 1%).
  • a bronze alloy contains in particular 0.1 to 12% tin, al optional components individually or in combination, such as zinc (maximum 6%), nickel (maximum 5%), iron (maximum 4%) and other optional components for setting special properties the elements phosphorus, chrome, zirconium, titanium, magnesium (each up to a maximum of 1%).
  • An aluminum bronze contains in particular 1 to 10% aluminum and, as optional components, individually or in combination iron (maximum 5%), nickel (maximum 8%), silicon (maximum 4%), mang (maximum 5%), tin (maximum 3%) as well as other 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 phosphorus (maximum 0.5%), iron (maximum 4%), tin (maximum 3%), nickel (maximum 4%), silicon (maximum 2%), chromium (maximum 2%), cobalt (maximum 2%), berylliu (maximum 2%) and, as further optional components, titanium, zirconium, 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 equipment available in many semifinished factories if the blanks required for the production, that is to say pressing bolts for the shaping on extrusion presses or slabs for hot rolling, are produced economically Prepress stage ready.
  • the spray compacting method is preferably used for this preliminary stage (cf. EP-OS 0.198.613).
  • a melt is broken down into droplets by a gas jet in a suitable nozzle, and the drops are collected on a base to form a solid body.
  • Dispersion particles can be introduced into the melt droplet jet and solid bolts and slabs with dispersed particles can be produced in this way.
  • a protective gas or gas mixture protecting against oxidation is preferably used.
  • carbon particles are blown into the melt droplet jet of a carbon-free copper or a carbon-free copper alloy directed onto a base.
  • the particles can consist of carbon black or graphite powder.
  • Pre-agglomeration of the soot particles into a more free-flowing spherical shape is particularly useful in the case of soot.
  • the soot or graphite particles are metered into the auxiliary gas jet either via a mechanical metering device (eg screw) or via a vibrating trough.
  • a protective gas or a gas mixture protecting against oxidation is expediently used again as the carrier gas for the particles.
  • a certain inclination of the central line of the jet cones formed with respect to one another is important.
  • the angle of inclination between the two central lines of the beam cone is between 10 ° and 90 °, preferably between 20 "and 70 °.
  • the carbon particles can also be introduced by mechanical means into the melt droplet jet of a carbon-free copper or a carbon-free copper alloy directed onto a base.
  • the semifinished products according to the invention are preferably used for the production of parts in which machining work has to be carried out. These include in particular drilling, turning or milling parts such as fittings, threads, clock parts, pins, etc.
  • Fig. 1 shows the principle of spray compacting
  • a spray compacting chamber 1 On the top of a spray compacting chamber 1 is a crucible with a copper-zinc melt 3, which contains 30% zinc, the rest copper contains in addition to the technically usual impurities, set and introduced the melt 3 through a stopper valve 2 'in a nozzle 4.
  • the atomizing gas 5 hits the melt 3 and breaks down the spray into a conical droplet jet 6.
  • the droplet jet 6 hits a rotating base 7, which can be part of a bolt, for example, and solidifies there. 8 kg of melt per hour are passed through the nozzle 4.
  • a jet 10 of spherically agglomerated soot particles with an average particle size of 200 ⁇ m is blown into the trajectory of the droplet jet 6 via a metering nozzle 8 (two possible positions are shown) through a gas stream 9.
  • the auxiliary gas jet 10 transports 4 kg of soot particles per hour into the atomization chamber 1.
  • a bolt is then formed, which contains 0.36% carbon
  • FIG. 2 shows the angle of inclination ⁇ between the center line 6 'of the melt droplet jet 6 and the center line 10' of the particle jet 10 (auxiliary gas jet).
  • the blanks in the form of bolts or slabs explained using the example still have a certain residual porosity of at most 5%.
  • This residual porosity is reduced by the subsequent hot and cold forming steps (such as extrusion, hot rolling, cold rolling and drawing), so that in relation to the known sintered bodies with high porosity, a dense, mechanically highly stressable semi-finished product is produced.
  • the usual admixtures are sawn to the required length after removal from the compression device and pressed in a continuous press, for example to form a brass rod.
  • the pressing temperature is chosen between 650 and 750 ° C.
  • the brass rod has an outer diameter of 20 mm, for example. When pressed, the rod has strength values between 320 and 400 N / mm 2 and a Brinell hardness of approximately 72 to 105 HB.
  • a section of the bar is subjected to a forehead turning test on a lathe with a conventional swivel chair. This creates short, tangy chips.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Powder Metallurgy (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)

Abstract

L'invention concerne un produit demi-fini en cuivre ou en alliage de cuivre sous forme de barres, tubes, profilés, tôles ou bandes, s'utilisant spécialement pour des travaux d'usinage. Il est donc particulièrement approprié pour des pièces fraisées, alésées ou tournées. L'invention propose d'ajouter comme brise-copeaux au cuivre ou à l'alliage de cuivre de 0,01 à 10 % de carbone, de préférence de 0,01 à 2 % de carbone, sous forme de particules de graphite ou de noir de carbone. L'ébauche nécessaire à la fabrication du produit semi-fini s'obtient par compression par aspersion.
EP91904195A 1990-03-01 1991-02-26 Produit demi-fini en cuivre ou en alliage de cuivre avec additio n de carbone Withdrawn EP0471048A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4006410 1990-03-01
DE4006410A DE4006410C2 (de) 1990-03-01 1990-03-01 Halbzeug aus Kupfer oder einer Kupferlegierung mit Kohlenstoffzusatz

Publications (1)

Publication Number Publication Date
EP0471048A1 true EP0471048A1 (fr) 1992-02-19

Family

ID=6401191

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91904195A Withdrawn EP0471048A1 (fr) 1990-03-01 1991-02-26 Produit demi-fini en cuivre ou en alliage de cuivre avec additio n de carbone

Country Status (6)

Country Link
EP (1) EP0471048A1 (fr)
JP (1) JPH04505482A (fr)
CA (1) CA2054755A1 (fr)
DE (1) DE4006410C2 (fr)
FI (1) FI915154A7 (fr)
WO (1) WO1991013183A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69637333T2 (de) * 1995-06-27 2008-10-02 International Business Machines Corp. Kupferlegierungen für Chipverbindungen und Herstellungsverfahren
EP1251186A1 (fr) * 2001-04-19 2002-10-23 Wieland-Werke AG Alliage du cuivre contenant du nickel et du manganése et son utilisation
ATE298007T1 (de) * 2001-04-19 2005-07-15 Wieland Werke Ag Verwendung einer sprühkompaktierten kupfer-nickel-mangan-legierung
UA47235C2 (uk) * 2001-09-18 2003-05-15 Сергій Михайлович Романов Антифрикційний матеріал романіт-н, спосіб його отримання і елемент вузла тертя
UA52478C2 (en) * 2002-06-14 2004-09-15 Serhii Mykhailovych Romanov Antifriction material "romanit-s", a method for obtaining thereof and friction unit element made of antifriction material
UA60888C2 (en) * 2003-03-26 2006-08-15 Serhii Mykhailovych Romanov An antifriction material romanit-st, a method for obtaining thereof and friction unit element
UA61751C2 (en) * 2003-04-11 2006-11-15 Serhii Mykhailovych Romanov ôROMANIT - VVLö ANTIFRICTION MATERIAL, PROCESS FOR ITS PREPARATION AND FRICTION SUBUNIT
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
KR101378202B1 (ko) * 2009-09-07 2014-03-26 고쿠리쯔 다이가쿠 호징 츠쿠바 다이가쿠 구리합금 및 그 제조방법
SG192046A1 (en) 2011-02-04 2013-08-30 Baoshida Swissmetal Ag Cu-ni-zn-mn alloy
EP3434335A1 (fr) * 2017-07-28 2019-01-30 Bayer Aktiengesellschaft Dispositif pour la manutention de produits en vrac
CN111299347B (zh) * 2019-12-19 2022-10-18 中国航空制造技术研究院 一种宽幅带筋薄壁板的挤压成形方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2810641A (en) * 1954-12-22 1957-10-22 Iii John S Roberts Precipitation hardenable copper, nickel, aluminum, zirconium alloys
US3374126A (en) * 1965-10-08 1968-03-19 Int Nickel Co Bright annealing of tubular metal articles
BE757506A (fr) * 1969-10-14 1971-04-14 Int Nickel Ltd Alliages de nickel et de zinc
BE791870A (fr) * 1971-11-26 1973-03-16 Ver Deutsche Metallwerke Ag Alliage de petrissage a base de cuivre-nickel
JPS556695B2 (fr) * 1974-12-28 1980-02-19
DE3207247C2 (de) * 1982-02-25 1984-07-26 Mannesmann AG, 4000 Düsseldorf Verfahren zur Verbesserung der Schweißeignung einer Kupfer-Nickel-Legierung
DE3321438A1 (de) * 1983-06-14 1985-03-07 Hilti Ag, Schaan Reaktionslot auf kupferbasis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9113183A1 *

Also Published As

Publication number Publication date
CA2054755A1 (fr) 1991-09-02
DE4006410A1 (de) 1991-09-05
JPH04505482A (ja) 1992-09-24
DE4006410C2 (de) 1994-01-27
FI915154A0 (fi) 1991-10-31
WO1991013183A1 (fr) 1991-09-05
FI915154A7 (fi) 1991-10-31

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