US1852442A - Zinc-base die-casting alloy - Google Patents

Zinc-base die-casting alloy Download PDF

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Publication number
US1852442A
US1852442A US476946A US47694630A US1852442A US 1852442 A US1852442 A US 1852442A US 476946 A US476946 A US 476946A US 47694630 A US47694630 A US 47694630A US 1852442 A US1852442 A US 1852442A
Authority
US
United States
Prior art keywords
zinc
alloy
aluminum
copper
base die
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.)
Expired - Lifetime
Application number
US476946A
Other languages
English (en)
Inventor
Edmund A Anderson
George L Werley
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.)
New Jersey Zinc Co
Original Assignee
New Jersey Zinc Co
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 New Jersey Zinc Co filed Critical New Jersey Zinc Co
Priority to US476946A priority Critical patent/US1852442A/en
Priority claimed from US478796A external-priority patent/US1852434A/en
Priority to AT134254D priority patent/AT134254B/de
Priority to FR721782D priority patent/FR721782A/fr
Priority to CH160810D priority patent/CH160810A/fr
Priority to GB23415/31A priority patent/GB376988A/en
Priority to CH159455D priority patent/CH159455A/fr
Priority to AT138002D priority patent/AT138002B/de
Priority to GB24092/31A priority patent/GB376534A/en
Publication of US1852442A publication Critical patent/US1852442A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C22C18/00—Alloys based on zinc
    • C22C18/04—Alloys based on zinc with aluminium as the next major constituent

Definitions

  • This invention relates to zinc base die-casting alloys and has for its object the provision of an improved alloy of this character.
  • Zinc-aluminum alloys containing less than about 80% of aluminum undergo a structural change subsequent to solidification which is during the cooling of the alloy after casting or may through certain influences be retarded or inhibited. In such cases it may take place gradually over a period of months in at ordinary temperatures.
  • a secondary stage of phase change which sometimes occurs is the growth or coalescence of the extremely small particles of the new bases as first formed into larger particles.
  • This stage may be accompanied by softening Application filed August 21, 1930. Serial 1W0. 476,946.
  • Zinc-aluminum alloys in this range of composition are also subject to a type of disintegration commonly known as intercrystal- 4, line oxidation.
  • intercrystal- 4 line oxidation.
  • intercrystalline oxidation may'completely penetrate specimens of these alloys and cause swelling, warping and even complete disintegration.
  • t Intercrystalline oxidation is in some way associated with and partly dependent upon the phase change.
  • Our present invention is based on the discovery that in an alloy made with zinc metal of high purity and containing aluminum, for example 4%, the presence of a small amount r of copper (without magnesium), for example 1%, is sufiicient to give substantially complete resistance to intercrystalline oxidation.
  • the alloy containing 4% aluminum and 1% copper (without magnesium) has the advantage of a higher initial impact strength with a somewhat higher impact strength after ten days exposure to air saturated with moisture at 95 C.
  • the new alloy also has an appreciably higher ance zinc metal of high purity containing 9999+ zinc.
  • the zinc metal of high purity should contain not more than about 0.01% lead plus cadmium. Very satisfactory results have been secured with zinc metal containing 99.99+% zinc, less than 0.003% lead, less than 0.003% cadmium and less than 0.001% tin. Tin should be substantially excluded from the alloy and in no case should the tin content exceed about 0.001%.
  • alloy No. 4 is of the composition embraced within the present invention.
  • the tensile strength is indicated in pounds per square inch forflat and round test specimens.
  • the impact strength is indicated in foot pounds per square inch. Linear expansion is indicated in inches in; test sections in. and V in. in width.
  • a zinc base alloy consisting of about 4% aluminum, about 1% copper and the balance zinc metal of high purity with at least 99.98% v 2.
  • a zinc base alloy consisting of 2 to 5% aluminum, 0.05 to 2% copper, and in which the zinc base is zinc metal of high purity containing at least 99.98% zinc.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Continuous Casting (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
US476946A 1930-08-21 1930-08-21 Zinc-base die-casting alloy Expired - Lifetime US1852442A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US476946A US1852442A (en) 1930-08-21 1930-08-21 Zinc-base die-casting alloy
GB23415/31A GB376988A (en) 1930-08-21 1931-08-19 Zinc-base die-casting alloy
FR721782D FR721782A (fr) 1930-08-21 1931-08-19 Alliage à base de zinc pour le moulage en coquille
CH160810D CH160810A (fr) 1930-08-21 1931-08-19 Alliage à base de zinc.
AT134254D AT134254B (de) 1930-08-21 1931-08-19 Zinklegierung, insbesondere für Spritzguß.
CH159455D CH159455A (fr) 1930-08-21 1931-08-27 Alliage à base de zinc.
AT138002D AT138002B (de) 1930-08-21 1931-08-27 Zinklegierung, insbesondere für Spritzguß.
GB24092/31A GB376534A (en) 1930-08-21 1931-08-27 Zinc-base die-casting alloy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US476946A US1852442A (en) 1930-08-21 1930-08-21 Zinc-base die-casting alloy
US478796A US1852434A (en) 1930-08-29 1930-08-29 Zinc base die-casting alloy

Publications (1)

Publication Number Publication Date
US1852442A true US1852442A (en) 1932-04-05

Family

ID=33555436

Family Applications (1)

Application Number Title Priority Date Filing Date
US476946A Expired - Lifetime US1852442A (en) 1930-08-21 1930-08-21 Zinc-base die-casting alloy

Country Status (5)

Country Link
US (1) US1852442A (de)
AT (2) AT134254B (de)
CH (2) CH160810A (de)
FR (1) FR721782A (de)
GB (2) GB376988A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007695A1 (de) * 1978-06-09 1980-02-06 FORD AEROSPACE & COMMUNICATIONS CORPORATION Zersplitternder Geschossmantel

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE865978C (de) * 1941-03-04 1953-02-09 Metallgesellschaft Ag Verwendung von Zinkgusslegierungen
US2927856A (en) * 1952-03-31 1960-03-08 Chemalloy Electronics Corp Multi-purpose alloys of controlled homogeneity
US2907105A (en) * 1956-06-21 1959-10-06 Ohmi Rihei Method of soldering aluminum

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007695A1 (de) * 1978-06-09 1980-02-06 FORD AEROSPACE & COMMUNICATIONS CORPORATION Zersplitternder Geschossmantel

Also Published As

Publication number Publication date
GB376534A (en) 1932-07-14
FR721782A (fr) 1932-03-08
GB376988A (en) 1932-07-21
CH159455A (fr) 1933-01-15
AT138002B (de) 1934-06-25
CH160810A (fr) 1933-03-31
AT134254B (de) 1933-07-25

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