US1954003A - Copper alloy for chill and die casting - Google Patents

Copper alloy for chill and die casting Download PDF

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Publication number
US1954003A
US1954003A US457546A US45754630A US1954003A US 1954003 A US1954003 A US 1954003A US 457546 A US457546 A US 457546A US 45754630 A US45754630 A US 45754630A US 1954003 A US1954003 A US 1954003A
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United States
Prior art keywords
chill
die casting
copper alloy
silicon
alloy
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Expired - Lifetime
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US457546A
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Vaders Eugen
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Individual
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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
    • C22C9/04—Alloys based on copper with zinc as the next major constituent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
    • F16C33/121—Use of special materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2204/00—Metallic materials; Alloys
    • F16C2204/10—Alloys based on copper

Definitions

  • My invention relates to a copper alloy for chill and die casting. It is an object of my invention to improve an alloy of this type, and to this end I admlx silicon thereto.
  • copper-silicon alloys are 30 equally suitable for chill and for die casting.
  • zinc is added to the copper-silicon alloy, as the mechanical properties are much improved by such addition.
  • a suitable alloy has the following composition:
  • the alloy should have particular properties, for instance, should be suit able'as a bearing metal, other metals are added but not exceeding 2%.
  • Such metals are: lead, antimony, bismuth, cadmium, tin, nickel, cobalt, manganese, iron, chromium, aluminium, titanium, tungsten, molybdenum, zircon.

Description

Patented Apr. 10, 1934 UNITED STATES PATENT OFFICE,
corraa armor roa emu. m ins cas'rmo Elgenvaderl, Eberswalde, Germany No Drawing. Application May 29, 1830, Serial No. 457,546. In March 31, 193.
1 Claim.
, My invention relates to a copper alloy for chill and die casting. It is an object of my invention to improve an alloy of this type, and to this end I admlx silicon thereto.
5 Chill and die castings are manufactured to a limited extent only, and by preference of copperzinc alloys, aluminium brass and aluminium Another drawback of aluminium bronze is the high shrinkage. Castings having recesses and cavities often become welded at the-cores so that it is diiiicult or even impossible to extract the cores. When a core sticks-the alloy must be the permanent mould which is very detrimental to the mould.
Die castings of brass lack strength and their faces are rough on account of the zinc vapour 26 formation. Parts undergoing high stress, such as gearwheels, cams, bearing brasses, etc., cannot be die cast from brass as the brass does not possess the properties required for such parts.
0n the other hand, copper-silicon alloys are 30 equally suitable for chill and for die casting. The
favorable influence of silicon is two-fold. Firstwith.
ly, it improves the mechanical properties of the castings and gives them a perfectly smooth surface. due to the formation of silicon dioxide. A surface of such smoothness will not be attained with any of the existing alloys. Secondly, silicon is a good deoxidizing agent so that the castings are free from slag, which further improves the surface.
Preferably, zinc is added to the copper-silicon alloy, as the mechanical properties are much improved by such addition.
A suitable alloy has the following composition:
Percent Copper to 94 7o Silicon 6 to 2 Zinc 28 to 3 If it is desired that the alloy should have particular properties, for instance, should be suit able'as a bearing metal, other metals are added but not exceeding 2%.
Such metals are: lead, antimony, bismuth, cadmium, tin, nickel, cobalt, manganese, iron, chromium, aluminium, titanium, tungsten, molybdenum, zircon.
I claim:
A chill or die casting of an alloy consisting of from 65% and up to 94% copper, from 2% to 6% silicon, from 3% to 28% zinc, and an appreciable amount of aluminum not more than 2%. 85
- EUGEN VADERS.
US457546A 1930-03-31 1930-05-29 Copper alloy for chill and die casting Expired - Lifetime US1954003A (en)

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DE1954003X 1930-03-31

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362579A (en) * 1979-12-25 1982-12-07 Nihon Kogyo Kabushiki Kaisha High-strength-conductivity copper alloy
EP1045041A1 (en) * 1998-10-12 2000-10-18 Sambo Copper Alloy Co., Ltd Leadless free-cutting copper alloy
EP1452613A2 (en) * 2003-02-28 2004-09-01 Wieland-Werke AG Lead-free copper alloy and use thereof
US20050247381A1 (en) * 1998-10-09 2005-11-10 Sambo Copper Alloy 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
US7883589B2 (en) 2005-09-22 2011-02-08 Mitsubishi Shindoh Co., Ltd. Free-cutting copper alloy containing very low lead
DE102014101346A1 (en) * 2014-02-04 2015-08-06 Otto Fuchs Kg synchronizer ring
US11427891B2 (en) 2019-07-24 2022-08-30 Nibco Inc. Low silicon copper alloy piping components and articles

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4362579A (en) * 1979-12-25 1982-12-07 Nihon Kogyo Kabushiki Kaisha High-strength-conductivity copper alloy
US20050247381A1 (en) * 1998-10-09 2005-11-10 Sambo Copper Alloy Co., Ltd. Copper/zinc alloys having low levels of lead and good machinability
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
EP1600516A2 (en) * 1998-10-12 2005-11-30 Sambo Copper Alloy Co., Ltd Lead-free, free-cutting copper alloys
EP1600516A3 (en) * 1998-10-12 2005-12-14 Sambo Copper Alloy Co., Ltd Lead-free, free-cutting copper alloys
EP1559802A1 (en) * 1998-10-12 2005-08-03 Sambo Copper Alloy Co., Ltd Lead-free, free-cutting copper alloys
EP1045041A1 (en) * 1998-10-12 2000-10-18 Sambo Copper Alloy Co., Ltd Leadless free-cutting copper alloy
EP1045041A4 (en) * 1998-10-12 2003-05-07 Sambo Copper Alloy Co Ltd Leadless free-cutting copper alloy
EP1600517A2 (en) * 1998-10-12 2005-11-30 Sambo Copper Alloy Co., Ltd Lead-free, free-cutting copper alloys
EP1600517A3 (en) * 1998-10-12 2005-12-14 Sambo Copper Alloy Co., Ltd Lead-free, free-cutting copper alloys
EP1452613A2 (en) * 2003-02-28 2004-09-01 Wieland-Werke AG Lead-free copper alloy and use thereof
US20040234411A1 (en) * 2003-02-28 2004-11-25 Uwe Hofmann Lead-free copper alloy and a method of manufacture
US7354489B2 (en) 2003-02-28 2008-04-08 Wieland-Werke Ag Lead-free copper alloy and a method of manufacture
AU2004200784B2 (en) * 2003-02-28 2009-08-20 Wieland-Werke Ag A lead-free copper alloy and its use
EP1452613A3 (en) * 2003-02-28 2004-09-22 Wieland-Werke AG Lead-free copper alloy and use thereof
US7883589B2 (en) 2005-09-22 2011-02-08 Mitsubishi Shindoh Co., Ltd. Free-cutting copper alloy containing very low lead
DE102014101346A1 (en) * 2014-02-04 2015-08-06 Otto Fuchs Kg synchronizer ring
US11427891B2 (en) 2019-07-24 2022-08-30 Nibco Inc. Low silicon copper alloy piping components and articles

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