US1530374A - Metal coating - Google Patents

Metal coating Download PDF

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Publication number
US1530374A
US1530374A US593958A US59395822A US1530374A US 1530374 A US1530374 A US 1530374A US 593958 A US593958 A US 593958A US 59395822 A US59395822 A US 59395822A US 1530374 A US1530374 A US 1530374A
Authority
US
United States
Prior art keywords
cast iron
copper
metal
united
coating
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
US593958A
Inventor
Floyd C Kelley
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
Priority claimed from US380023A external-priority patent/US1590034A/en
Application filed by General Electric Co filed Critical General Electric Co
Priority to US593958A priority Critical patent/US1530374A/en
Application granted granted Critical
Publication of US1530374A publication Critical patent/US1530374A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
    • B22D19/085—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal of anti-frictional metal
    • 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
    • Y10S428/939—Molten or fused coating
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49643—Rotary bearing
    • Y10T29/49647—Plain bearing
    • Y10T29/49668—Sleeve or bushing making
    • Y10T29/49677—Sleeve or bushing making having liner
    • 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
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49705—Coating or casting
    • 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.]
    • Y10T428/12708—Sn-base component
    • Y10T428/12715—Next to Group IB metal-base component
    • 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
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12903—Cu-base component
    • Y10T428/12917—Next to Fe-base component

Definitions

  • the present invention relates to the coating of cast iron with other metal and particularly to the production of a composite article of cast iron'and a non-ferrous rnetal.
  • Great difficulty has been experiehced in 1 causing cast iron to unite with a. non-ferrous metal, for example, copper, in such a way asto produce a thoroughly adherent coatlng. orv union.
  • 'Heating the metals to be united in hydrogen does not cause the copper to 2 wet the cast iron as is the case when copper in a molten, state is brought into contact with steel in the presence of hydrogen.
  • Fluxes likewise fail to produce an adherent coating between cast iron and copper, or
  • a homogenously adherent union between cast iron and a nonferrous metal of lower melting point such as copper, silver or brass can be produced by applying the molten non-ferrous metal to the cast iron to be coated in a reducing atc mosphere in the presence of a flux, particularly cryolite.
  • cupreous metal in turn may be united with,a layer of other metal, such a for example, as Babbitt metal which otherwise could not be integrally united with cast
  • the accompanying drawing illustrates in section a bearing made by t e practice of a process embodying my invention.
  • a body of cast iron 1 to be joined to a metal layer 2 of copper, silver or the like is heated in any convenient way, as for example, in an ordinary gas flame, to about 750 to 800 (3., wherebythfe surface of the cast iron is
  • castlite then is distributed uniformly over the heated surface as by applying the cryolite in powdered form upon the oxidized surface of the, cast iron.
  • the cryolite is brought to fusion on the heated cast iron, and the iron surface coated withcryolite flux is brought into contact with molten copper, brass or the like in a hydrogen atmosphere.
  • a pieceof copper wire may be wrapped about the cast iron and the iron with the copper heated to the melting point of copper in a hydrogen furnace. If the cryolite has been properly distributed before melting the cop-per, a uniform coating 2, of copper results which when molten wets the cast lron'in such away as to resist mechanical separation when 'solidified- In my opinion the heating of the-cast iron to about 750 to 800 C. in an ordinary gas flame oxidizes the carbon out of the surface of the cast iron, and whatever oxide of the iron is formed is subsequently reduced by the hydrogen.
  • a layer of Babbitt metal 3 may be cast against the layer of copper.
  • Babbitt metal is an alloy consisting of a preponderant amount of tin, a lesser amount of antimony and a small percentage of copper.
  • a bearing thus produced may be supported on a suitable frame 4. Only one-half of the bearing enclosing the shaft 5 has been illustrated. I
  • An article of manufacture comprising cast iron, a coating of cupreous metal united with the cast iron, the surface of the iron at the junction with said cupreous coating containing less carbon than the main body of said iron, and a layer of Babbitt metal united with said cupreous metal.
  • An article of manufacture comprising cast iron, a coating of copper directly and 3.
  • An article of manufacture consisting of a base of cast iron, a coating of copper united therewith and a layer of Babbitt metal united with said copper coating.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Description

March 17, 1925: 1,530,374 F. c. KELLEY METAL COATING Original Filed May 10. 1920 Invent or Floyd C. Kelley,
His Attorney Patented Mar. 17-, 1925.
UNITED [STATES PAT'E T OFFICE.
FLOYD o. KELLEY, or scHENEorAnY, NEw YORK, ASSIGNOR TO GENERAL ELEc'rnIc COMPANY/A CORPORATION our NEW YoEx.
METAL COATING.
Original application filed ma 10, 1920, Serial No. 380,023. Divided andthis application flied October 12, 1922. Serial No. 593,958.
To all whom it may concern:
Be it known that. I, FLOYD C. KELLEY,
a citizen of the United States, residing at Schenectady, in the county of Schenectady,
.5 State ofcNew York, have invented certain new and useful Improvements 'in Metal Coatings (division of my application filed May 10, 1920, Serial No. 380,023), of which the following is a specification.
1 The present invention relates to the coating of cast iron with other metal and particularly to the production of a composite article of cast iron'and a non-ferrous rnetal. Great difficulty has been experiehced in 1 causing cast iron to unite with a. non-ferrous metal, for example, copper, in such a way asto produce a thoroughly adherent coatlng. orv union. 'Heating the metals to be united in hydrogen does not cause the copper to 2 wet the cast iron as is the case when copper in a molten, state is brought into contact with steel in the presence of hydrogen.
' Fluxes likewise fail to produce an adherent coating between cast iron and copper, or
2 the like, when used in the. usual way in contact with air.
I have discovered that a homogenously adherent union between cast iron and a nonferrous metal of lower melting point, such as copper, silver or brass can be produced by applying the molten non-ferrous metal to the cast iron to be coated in a reducing atc mosphere in the presence of a flux, particularly cryolite.
iron articles intimately united with brass or other suitable cupreous metal, maybe produced. The cupreous metal in turn may be united with,a layer of other metal, such a for example, as Babbitt metal which otherwise could not be integrally united with cast The accompanying drawing illustrates in section a bearing made by t e practice of a process embodying my invention.
, ;In accordance with one method of producing the article constituting my invention a body of cast iron 1 to be joined to a metal layer 2 of copper, silver or the like is heated in any convenient way, as for example, in an ordinary gas flame, to about 750 to 800 (3., wherebythfe surface of the cast iron is In accordance with my invention, castlite, then is distributed uniformly over the heated surface as by applying the cryolite in powdered form upon the oxidized surface of the, cast iron. The cryolite is brought to fusion on the heated cast iron, and the iron surface coated withcryolite flux is brought into contact with molten copper, brass or the like in a hydrogen atmosphere. For example, a pieceof copper wire may be wrapped about the cast iron and the iron with the copper heated to the melting point of copper in a hydrogen furnace. If the cryolite has been properly distributed before melting the cop-per, a uniform coating 2, of copper results which when molten wets the cast lron'in such away as to resist mechanical separation when 'solidified- In my opinion the heating of the-cast iron to about 750 to 800 C. in an ordinary gas flame oxidizes the carbon out of the surface of the cast iron, and whatever oxide of the iron is formed is subsequently reduced by the hydrogen.
A layer of Babbitt metal 3 may be cast against the layer of copper. Babbitt metal is an alloy consisting of a preponderant amount of tin, a lesser amount of antimony and a small percentage of copper. A bearing thus produced may be supported on a suitable frame 4. Only one-half of the bearing enclosing the shaft 5 has been illustrated. I
When cast iron is .to be coated with silver, I prefer to employ borax as a flux.
In the appended claims, Ihave set forth the novel features of my invention with particular reference to copper, but I wish it to be understood that my invention is equally applicable to coating cast iron with other metals, as for example, brass, and I mean by the appended claims to cover an article comprising cast iron united to metals other than copper having similar properties.
What I claim as new and desire to secure by Letters Patent of the United States, is,-
l. An article of manufacture comprising cast iron, a coating of cupreous metal united with the cast iron, the surface of the iron at the junction with said cupreous coating containing less carbon than the main body of said iron, and a layer of Babbitt metal united with said cupreous metal. I
2. An article of manufacture comprising cast iron, a coating of copper directly and 3. An article of manufacture consisting of a base of cast iron, a coating of copper united therewith and a layer of Babbitt metal united with said copper coating.
In witness whereof, I have hereunto set my hand this 10th day of October, 1922.
FLOYD C. KELLEY.
US593958A 1920-05-10 1922-10-12 Metal coating Expired - Lifetime US1530374A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US593958A US1530374A (en) 1920-05-10 1922-10-12 Metal coating

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US380023A US1590034A (en) 1920-05-10 1920-05-10 Metal coating
US593958A US1530374A (en) 1920-05-10 1922-10-12 Metal coating

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US1530374A true US1530374A (en) 1925-03-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887766A (en) * 1955-06-27 1959-05-26 Borg Warner Composite metal articles

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2887766A (en) * 1955-06-27 1959-05-26 Borg Warner Composite metal articles

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