US3613210A - Arc cast ingot - Google Patents

Arc cast ingot Download PDF

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Publication number
US3613210A
US3613210A US555483A US3613210DA US3613210A US 3613210 A US3613210 A US 3613210A US 555483 A US555483 A US 555483A US 3613210D A US3613210D A US 3613210DA US 3613210 A US3613210 A US 3613210A
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US
United States
Prior art keywords
ingot
alloy
top portion
arc
alloys
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
US555483A
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English (en)
Inventor
Winston H Chang
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Application granted granted Critical
Publication of US3613210A publication Critical patent/US3613210A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00—Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • 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
    • C22C1/02—Making non-ferrous alloys by melting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/923—Physical dimension
    • Y10S428/924—Composite
    • Y10S428/926—Thickness of individual layer specified
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9335—Product by special process
    • Y10S428/941—Solid state alloying, e.g. diffusion, to disappearance of an original layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12229—Intermediate article [e.g., blank, etc.]
    • Y10T428/12271—Intermediate article [e.g., blank, etc.] having discrete fastener, marginal fastening, taper, or end structure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12361—All metal or with adjacent metals having aperture or cut
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12431—Foil or filament smaller than 6 mils
    • Y10T428/12438—Composite
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12778—Alternative base metals from diverse categories

Definitions

  • the ingot of the present invention is an arc cast ingot including a top portion, integral with the ingot, of a material which has suflicient ductility to prevent the initiation fand propagation of cracks into the body or central portion of the ingot and is of a nominal thickness, at least 1 inch, to prevent ingot cracking.
  • the interface region between the central and top portions of the ingots of Examples 2, 3, 4 and 6 were examined by a combination of macroscopic, microscopic, hardness and microprobe analyzer techniques. As was mentioned before, the interface is curvical in shape delineated by poro'sities. Diffusion of the alloying elements Ti, Zr and C into the unalloyed Mo extends to about 0.1", accompanied by alloy depletion of less than 0.15 immediately below the interface. Thus the total depth of adversely affected zone into the alloy or central portion due to porosity and alloy depletion is less than 0.25". The width of the affected zone in the ingots of Examples 2, 3, 4 and 6 does not vary significantly with the depth of the top portion. As is well known in the art, this amount of unrecoverable material is considerably less than the amount of material normally unrecoverable in an untopped ingot because of cracking, piping and the like.
  • EXAMPLE 7 In addition to the 3.5 diameter ingots of Examples l through 6, a 6" diameter and y6" long ingot of Mo-3 alloy was melted in the same manner as described above, resulting in a nominal thickness of the top portion of the melted ingot of 1.4".
  • the electrode preparation was identical to that described in connection with the ingots of Examples l through 6 except that a larger electrode diameter of 2.5 was used in this Example 7.
  • the co-axial hole in the electrode was y0.5" in diameter.
  • the 6" diameter ingot of this Example 7 - was vacuum arc melted under the following conditions: current 6500 amps; melting voltage 36 volts; stirring amperage 0.1 amp; vacuum 5 10-10 torr; melting rate 0.49 in./min. or 3.41 lb./min. After withdrawing from the mold, the ingot was placed in a cold hydrogen furnace.
  • the use of a sufficiently ductile material which does not have a harmful effect on the central portion whether or not it alloys with the central portion of an ingot when applied in a suicient amount as a top portion of an ingot will eliminate ingot cracking upon solidification in those types of alloys which are particularly susceptible to solidification cracking.
  • the invention is readily and economically adaptable to existing apparatus and requires no changes in furnace design. It can be used with all high strength alloys which are consolidated by consumable arc melting.I

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
US555483A 1966-06-06 1966-06-06 Arc cast ingot Expired - Lifetime US3613210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55548366A 1966-06-06 1966-06-06

Publications (1)

Publication Number Publication Date
US3613210A true US3613210A (en) 1971-10-19

Family

ID=24217428

Family Applications (1)

Application Number Title Priority Date Filing Date
US555483A Expired - Lifetime US3613210A (en) 1966-06-06 1966-06-06 Arc cast ingot

Country Status (4)

Country Link
US (1) US3613210A (fr)
BE (1) BE694960A (fr)
FR (1) FR1516440A (fr)
GB (1) GB1174342A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4718940A (en) * 1986-05-05 1988-01-12 Mcphillips Kerry A Method of manufacturing alloy for use in fabricating metal parts

Also Published As

Publication number Publication date
GB1174342A (en) 1969-12-17
BE694960A (fr) 1967-08-14
FR1516440A (fr) 1968-03-08

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