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EP0039242A1 - Bronze à l'aluminium - Google Patents

Bronze à l'aluminium Download PDF

Info

Publication number
EP0039242A1
EP0039242A1 EP81301885A EP81301885A EP0039242A1 EP 0039242 A1 EP0039242 A1 EP 0039242A1 EP 81301885 A EP81301885 A EP 81301885A EP 81301885 A EP81301885 A EP 81301885A EP 0039242 A1 EP0039242 A1 EP 0039242A1
Authority
EP
European Patent Office
Prior art keywords
aluminium
chromium
bronze alloy
aluminium bronze
weight
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Withdrawn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
EP81301885A
Other languages
German (de)
English (en)
Inventor
Norman Coupe Ashton
Geoffrey Littlewood
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.)
Nc Ashton Ltd
Original Assignee
Nc Ashton 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 Nc Ashton Ltd filed Critical Nc Ashton Ltd
Publication of EP0039242A1 publication Critical patent/EP0039242A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C9/00Alloys based on copper
    • C22C9/01Alloys based on copper with aluminium as the next major constituent

Definitions

  • This invention relates to aluminium bronze alloys and more particularly, but not exclusively, to aluminium bronze alloys which are utilised to form products in which the wear resistance properties of the alloys are of importance.
  • an aluminium bronze alloy comprises by weight 6% to 15% aluminium and includes within the matrix thereof intermetallic particles of metal silicide for increasing the. wear resistance of the alloy.
  • the intermetallic particles of metal silicide have a greater hardness than the matrix of the alloy and form asperities at the free surface thereof.
  • the asperities of metal silicide which protrude from the free surface of the alloy structurally reinforce the alloys aluminium oxide film at said free surface.
  • the intermetallic particles are, preferably, formed substantially of chromium silicide or, alternatively, the particles may be formed substantially of manganese silicide. As a further alternative, the intermetallic particles may be formed substantially of iron silicide.
  • the aluminium bronze alloy comprises by weight 6% to 15% aluminium, 0.1% to 0.3% silicon and 0.1% to0.4% chromium or 0.1% to 5% manganese or a combination thereof.
  • the aluminium bronze alloy preferably, comprises by weight 10.3% aluminium, 0.25% silicon, 0.1% chromium, 1.5% iron or equivalent iron content, the balance being copper and the usual impurities.
  • the aluminium bronze alloy may comprise by weight 10.5% aluminium, 0.2% to 0.3% silicon, 0.2% to 0.3% chromium, 1% manganese, up to 1.5% iron, up to 0.5% nickel, the balance being copper and the usual impurities.
  • an aluminium bronze alloy comprises by weight 6% to 15% aluminium and includes chromium and silicon wherein the silicon content is equal to or greater than the chromium content.
  • the chromium content of the alloy comprises by weight 0.1% to 0.4% chromium.
  • an aluminium bronze alloy for forming gears and other power transmission products comprises by weight 9% to 11% aluminium, 0.4% chromium, 0.25% silicon and up to 2% manganese, the balance being copper and the usual impurities.
  • an aluminium bronze alloy for forming slides; support plates; guides, rolls and equipment used in the processing of metals comprises by weight 11.5% to 12.5% aluminium, 0.4% chromium, 0.25% silicon, and up to 2.00% manganese, the balance being copper and the usual impurities.
  • an aluminium bronze alloy for forming press tool inserts and dies comprises by weight 14% aluminium, 0.4% chromium, 0.25% silicon, and up to 2.00% manganese, the balance being copper and the usual impurities.
  • the alloy contains up to 1.5% iron and the silicon content is equal to or.greater than the chromium content.
  • the silicon content of the alloy is also found to be beneficial for the silicon content of the alloy to be equal to or greater than the chromium content of the alloy, particularly, where the alloy contains iron.
  • aluminium bronze alloys referred to above which are the subject of this invention, have been shown to maintain a considerably more stable oxide film and the stability of the oxide film is considered to be due to the reinforcement of the oxide film by intermetallic particles formed substantially of chromium silicide and/or manganese silicide. It has also been found that in alloys containing iron, iron is present in these complex silicides and therefore in such a case, the silicides are formed of various percentages of chromium, manganese and iron.
  • intermetallic particles are small, are uniformly distributed throughout the matrix of the alloy and are very much harder than the matrix. Furthermore, the intermetallic particles protrude from the free surface of the alloy in the form of minute asperities which are better able to sustain load supplied thereto than the normal aluminium oxide film. As these asperities are much harder than the matrix, they offer considerable resistance to shear and readily form oxide layers so as to resist welding to the mating surface under conditions of boundary lubrication.
  • aluminium bronze alloys are most suitably prepared by melting the correct proportions of aluminium and copper in a coreless induction furnace and adding thereto manganese, silicon and chromium in that order to the high temperature liquid. The liquid having these additions is then mixed mechanically and is then poured without any undue delay.
  • alloys are not sensitive . to small proportions of impurities with the exception of lead, arsenic and bismuth and conveniently may contain up to 0.5% iron, zinc, tin, vanadium, titanium, molybdenum, nickel, cobalt and tungsten. Where the alloys are to be manufactured in oil-fired furnaces, it has been found to be beneficial for the higher melting point constituents to be added as master alloys of copper.
  • the distribution and size of the intermetallic particles can be modified by utilising various forms of heat treatment such as a solution treatment, and precipitation or age hardening.
  • various forms of heat treatment such as a solution treatment, and precipitation or age hardening.
  • chromium silicon and manganese do not impair the already good corrosion resistance properties of aluminium bronze alloys and the improved wear resistance of.the aluminium bronze alloys containing chromium silicon and manganese are still retained when the alloy is applied as a weld deposit.
  • aluminium bronze alloys according to this invention can be produced in a cast or wrought condition thereby facilitating economic production of various forms of components.
  • aluminium bronze alloys having an aluminium content in the range of 6% to 11% by weight aluminium, and a hardness in the range of 180 to 280 Viewers pyramid number would be suitable, due to their increased wear resistance for the formation of gears of various types, particularly, worm wheels and other power transmission products.
  • One particularly suitable aluminium bronze alloy for the formation of such products comprises by weight 9% to 11% aluminium, 0.4% chromium, 0.25% silicon, and up to2.00% manganese, the balance being copper and the usual impurities.
  • aluminium bronze alloys have an aluminium content in the range of 11% to 15% by weight and a hardness in the range of 250 to 350 Vickers pyramid number
  • the alloy will be particularly useful for forming components such as slides, and support plates of machine tools, and guides and forming rolls and similar equipment used in the processing of other metals where an important criterion is the wear resistance of such products.
  • an aluminium bronze alloy comprising by weight 11.5% to 12.5% aluminium, 0.4% chromium, 0.23% silicon, and up to 2.00% manganese, the balance being copper and the usual impurities, would be particularly suitable for the production of such products.
  • aluminium bronze alloys having an aluminium content in the range of 11% to 15% by weight, and a hardness in the range of 300 to 450 Vickers pyramid number
  • one particularly suitable aluminium bronze alloy for forming such products would comprise by weight 14% aluminium, 0.4% chromium, 0.25% silicon, and up to 2.00% manganese,' the balance being copper and the usual impurities.
  • alloys previously described which are suitable for forming gears, worm wheels, other power transmission products, slides, support plates of machine tools, guides and forming rolls, press tool inserts and dies, it is found that such alloys can usefully contain up to 1.9% iron. Where such an iron content is included in the alloy it is then desirable to increase the silicon content so that the silicon content is equal to or greater than the chromium content.

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)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Mechanical Operated Clutches (AREA)
  • Sliding-Contact Bearings (AREA)
EP81301885A 1980-04-30 1981-04-29 Bronze à l'aluminium Withdrawn EP0039242A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8014265 1980-04-30
GB8014265 1980-04-30

Publications (1)

Publication Number Publication Date
EP0039242A1 true EP0039242A1 (fr) 1981-11-04

Family

ID=10513110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301885A Withdrawn EP0039242A1 (fr) 1980-04-30 1981-04-29 Bronze à l'aluminium

Country Status (4)

Country Link
EP (1) EP0039242A1 (fr)
JP (1) JPS56169738A (fr)
DE (1) DE3032767A1 (fr)
ES (1) ES501767A0 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2155241C2 (ru) * 1998-10-12 2000-08-27 Институт физики прочности и материаловедения СО РАН Спеченный антифрикционный материал на основе алюминиевой бронзы
WO2001032948A1 (fr) * 1999-10-29 2001-05-10 Man B & W Diesel A/S Procede et dispositif pour produire des pieces de machine pourvues d'au moins une surface de glissement
WO2001087542A1 (fr) * 2000-05-16 2001-11-22 Sierra Machinery, Inc Outil de galetage et de drayage
WO2003072837A1 (fr) * 2002-02-28 2003-09-04 Sandvik Ab Alliage a base de cuivre et son utilisation dans des environnements de carburation
CN114990380A (zh) * 2022-06-24 2022-09-02 上海交通大学 一种无铍超级高强高韧铜合金及其制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD5241A (fr) *
GB530447A (en) * 1938-07-01 1940-12-12 American Brass Co Improvements in or relating to copper base alloys
DE733166C (de) * 1939-06-28 1943-03-23 Ver Deutsche Metallwerke Ag Verwendung von bleihaltigen Aluminiumbronzen fuer gleitend beanspruchte Maschinenteile
US3993479A (en) * 1975-08-04 1976-11-23 Olin Corporation Copper base alloy
DE2621602A1 (de) * 1975-05-16 1976-12-02 Hitachi Ltd Aluminiumbronze mit hoher verschleissfestigkeit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD5241A (fr) *
GB530447A (en) * 1938-07-01 1940-12-12 American Brass Co Improvements in or relating to copper base alloys
DE733166C (de) * 1939-06-28 1943-03-23 Ver Deutsche Metallwerke Ag Verwendung von bleihaltigen Aluminiumbronzen fuer gleitend beanspruchte Maschinenteile
DE2621602A1 (de) * 1975-05-16 1976-12-02 Hitachi Ltd Aluminiumbronze mit hoher verschleissfestigkeit
US3993479A (en) * 1975-08-04 1976-11-23 Olin Corporation Copper base alloy

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2155241C2 (ru) * 1998-10-12 2000-08-27 Институт физики прочности и материаловедения СО РАН Спеченный антифрикционный материал на основе алюминиевой бронзы
WO2001032948A1 (fr) * 1999-10-29 2001-05-10 Man B & W Diesel A/S Procede et dispositif pour produire des pieces de machine pourvues d'au moins une surface de glissement
WO2001087542A1 (fr) * 2000-05-16 2001-11-22 Sierra Machinery, Inc Outil de galetage et de drayage
US6367137B1 (en) * 2000-05-16 2002-04-09 Sierra Machinery, Inc. Skiving and roller burnishing tool
US6560835B2 (en) 2000-05-16 2003-05-13 Sierra Machinery, Inc. Skiving and roller burnishing tool
WO2003072837A1 (fr) * 2002-02-28 2003-09-04 Sandvik Ab Alliage a base de cuivre et son utilisation dans des environnements de carburation
US7041252B2 (en) 2002-02-28 2006-05-09 Sandvik Intellectual Property Ab Copper base alloy
CN114990380A (zh) * 2022-06-24 2022-09-02 上海交通大学 一种无铍超级高强高韧铜合金及其制备方法
CN114990380B (zh) * 2022-06-24 2023-02-21 上海交通大学 一种1500MPa级无铍超级高强高韧铜合金及其制备方法

Also Published As

Publication number Publication date
JPS56169738A (en) 1981-12-26
DE3032767A1 (de) 1981-11-19
ES8303539A1 (es) 1983-02-01
ES501767A0 (es) 1983-02-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR IT NL

17P Request for examination filed

Effective date: 19820504

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840821

RIN1 Information on inventor provided before grant (corrected)

Inventor name: LITTLEWOOD, GEOFFREY

Inventor name: ASHTON, NORMAN COUPE