US2038551A - Method of electroplating zinc on cadmium zinc alloys - Google Patents

Method of electroplating zinc on cadmium zinc alloys Download PDF

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Publication number
US2038551A
US2038551A US750875A US75087534A US2038551A US 2038551 A US2038551 A US 2038551A US 750875 A US750875 A US 750875A US 75087534 A US75087534 A US 75087534A US 2038551 A US2038551 A US 2038551A
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United States
Prior art keywords
zinc
coating
cadmium
wire
electroplating
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Expired - Lifetime
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US750875A
Inventor
Domm Elgin Carleton
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National Standard Co
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National Standard Co
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    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
    • D07B1/0606—Reinforcing cords for rubber or plastic articles
    • D07B1/0666—Reinforcing cords for rubber or plastic articles the wires being characterised by an anti-corrosive or adhesion promoting coating
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/34—Pretreatment of metallic surfaces to be electroplated
    • C25D5/36—Pretreatment of metallic surfaces to be electroplated of iron or steel
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/201—Wires or filaments characterised by a coating
    • D07B2201/2011—Wires or filaments characterised by a coating comprising metals
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2001—Wires or filaments
    • D07B2201/201—Wires or filaments characterised by a coating
    • D07B2201/2013—Wires or filaments characterised by a coating comprising multiple layers
    • 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
    • Y10S428/934—Electrical process
    • Y10S428/935—Electroplating
    • 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
    • Y10T152/00—Resilient tires and wheels
    • Y10T152/10—Tires, resilient
    • Y10T152/10495—Pneumatic tire or inner tube
    • Y10T152/10819—Characterized by the structure of the bead portion of the tire
    • Y10T152/10846—Bead characterized by the chemical composition and or physical properties of elastomers or the like
    • 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.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12556—Organic component
    • Y10T428/12562—Elastomer
    • 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
    • Y10T428/12785—Group IIB 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
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-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
    • Y10T428/12785—Group IIB metal-base component
    • Y10T428/12792—Zn-base component
    • Y10T428/12799—Next to Fe-base component [e.g., galvanized]
    • 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
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
    • Y10T428/2942—Plural coatings
    • Y10T428/2944—Free metal in coating

Definitions

  • This invention relates to improvements in a method of coating metal.
  • the invention is particularly applicable to coat- ⁇ ing strands of wire to be used in reinforcing the bead of a tire.
  • the wire when so used commonly acts as a tension-member, and is imbedded in a rubber or rubber compound.
  • the wire When -so used, the wire is exposed to corrosive 'and rusting agents, ltiiarticularly to moisture which may seep into the
  • the drawing shows in 'diagrammatic form an embodiment of my invention.4
  • a metal for example wire suitable 'for use in tire beads, is first hot-dipped to provide 'a coating of a cadmium-zinc alloy.: This may be done, for example, by dipping the wire in a hot molten alloy of zinc and-cadmium., Such an alloy always has a melting point lower than that. of zinc, and certain of the alloys have a melting point below that of either zinc or cadmium.
  • a coating of zinc is then put over the rst coat by electrolysis or electroplating. Not only does a double coating applied by the above mentioned method give very good corrosion-resistance, but it has been discovered that the electro-coat tends to fill in the depressions in the lower zinc-cadmium alloy coat and thus produce a uniform and smooth coating. A coatingof the order of thickness of the lower coat is preferred.
  • copper or other suitable material may be applied over the corrosive-resistant double coating in order to increase the adhesiveness of the wire to rubber. It is frequently desirablel to apply such a coating when wire is used as a reinforcement for a tire bead.
  • the new process herein described is especially useful in procuring a coating of a desired and uniform thickness.
  • the wire is given a hot coat rst, and preferably I wipe this thin.
  • the coating is put on by electroplating; the operation can be continued to give exactly a desired thickness.
  • the coating acquires a smooth, uniform character which is freefrom holes, defects, and the like.
  • the method as set forth the zinc-cadmium alloy contains approximately 80 parts of zinc to 20 parts of. cadmium.
  • a coated ferrous article comprising a. ferrous base having a hot-dipped coating of a zine.
  • a coated ferrous wire comprising a ferrous base wire having a hot-dipped coating of a cadmium-zinc alloy thereon, and over that an electrodeposited coating substantially wholly of zinc.
  • a coated tire bead wire comprising a ferrous base wire having a hot-dipped coating of a zincn coating substantially wholly of zinc thereon, and having a coating of rubber vulcanized thereto.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Ropes Or Cables (AREA)
  • Reinforced Plastic Materials (AREA)

Description

April 28, .1936. E. c. DQMM 2&038551 METHOD OF ELECTROPLATING ZINC ON CADMIUM ZINC ALLOYS Filed oct. 51, 1954 Patented Apr. 28,l 1936 UNITED- STATES METHOD OF ELECTROPLATING ZINC 0N CADMIUM. ZINC ALLOYS Carleton Domm7 Niles, Mich., assignor to National-Standard Company, Niles, Mich., a corporation of Michigan Application october 31,1934, serial No, '150,875
8 Claims.
This invention relates to improvements in a method of coating metal. u 4
This application is a continuation in part of my co-pending application Serial No. 653,549, filed January 25, 1933.
In the Crapo Patent No. 1,984,335, is described a method of coating a ferrous article by hotgalvanizing it with zinc, and over that depositing lziiy some other method an additional coating of It has now been discovered that in those methods the thickness of the undercoating may be decreased without injuring corrosion-resistance to the type of corrosion of which salt-spray is typical, if insteadof the zinc-undercoating an alloy of cadmium and zinc is used for such un dercoating. At the same time, such an alloy may be applied at a lower temperature, and thus may be used in certain instances where the application of zinc alone by the hot-dip method might interfere with the character of the base.
The invention is particularly applicable to coat- `ing strands of wire to be used in reinforcing the bead of a tire. The wire when so used commonly acts as a tension-member, and is imbedded in a rubber or rubber compound. When -so used, the wire is exposed to corrosive 'and rusting agents, ltiiarticularly to moisture which may seep into the The drawing shows in 'diagrammatic form an embodiment of my invention.4
In accordance with the invention, a metal, for example wire suitable 'for use in tire beads, is first hot-dipped to provide 'a coating of a cadmium-zinc alloy.: This may be done, for example, by dipping the wire in a hot molten alloy of zinc and-cadmium., Such an alloy always has a melting point lower than that. of zinc, and certain of the alloys have a melting point below that of either zinc or cadmium.
A coating of zinc is then put over the rst coat by electrolysis or electroplating. Not only does a double coating applied by the above mentioned method give very good corrosion-resistance, but it has been discovered that the electro-coat tends to fill in the depressions in the lower zinc-cadmium alloy coat and thus produce a uniform and smooth coating. A coatingof the order of thickness of the lower coat is preferred.
If desired, copper or other suitable material may be applied over the corrosive-resistant double coating in order to increase the adhesiveness of the wire to rubber. It is frequently desirablel to apply such a coating when wire is used as a reinforcement for a tire bead.
The new process herein described is especially useful in procuring a coating of a desired and uniform thickness. Inlpractice, the wire is given a hot coat rst, and preferably I wipe this thin. In the next stage, the coating is put on by electroplating; the operation can be continued to give exactly a desired thickness. At the same time, the coating acquires a smooth, uniform character which is freefrom holes, defects, and the like.
As an example of the invention, it is preferred The foregoing description has been given for.l clearness of understanding only, and no unnecessary limitations should be understood therefrom. but the appended claims should be construed as broadly as permissible in view of the prior art.
What I-regard as new and desire to secure by Letters Patent is:
1, The process of coating a ferrous article which comprises applying to it by the hot-dip process a coating of an alloy of cadmium and zinc, and eiectrodepositing thereon an outer coating of zinc.
2. The method ofcoating a metal to increase its corrosion-resistance comprising nrst applying to it a molten zinc-cadmium alloy, and then applying 'a second coating of zinc over the first coating.'
3. The method of producing a ferrous tire-bead reinforcement wire which comprises nrst coating a ferrous wire with a zinc-cadmium alloy by the hot-dip process, andthen electroplating zinc over the hot-dipped wire to produce a uniform coating of desired thickness.
4. The method as set forth the zinc-cadmium alloy contains approximately 80 parts of zinc to 20 parts of. cadmium.
5. A coated ferrous article, comprising a. ferrous base having a hot-dipped coating of a zine.
cadmium alloy thereon, and over that an electrodeposlted coating substantially wholly Yof zinc.
6. A coated ferrous wire comprising a ferrous base wire having a hot-dipped coating of a cadmium-zinc alloy thereon, and over that an electrodeposited coating substantially wholly of zinc.'
7. A coated tire bead wire comprising a ferrous base wire having a hot-dipped coating of a zincn coating substantially wholly of zinc thereon, and having a coating of rubber vulcanized thereto.
8. An article as set forth in claim 5, in which the zinc-cadmium alloy contains approximately 80 parts zinc to 20 parts cadmium. v
Enom cARLm'oN Dorm.
in claim 1, in whichl Y cadmium alloy thereon, and electrodepositedl
US750875A 1934-10-31 1934-10-31 Method of electroplating zinc on cadmium zinc alloys Expired - Lifetime US2038551A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801197A (en) * 1954-07-07 1957-07-30 Gen Electric Electric terminal
DE3522802A1 (en) * 1984-07-06 1986-01-23 Cockerill-Sambre S.A., Seraing STEEL PRODUCT
US4911991A (en) * 1987-03-02 1990-03-27 Pirelli Coordinamento Pneumatici S.P.A. Metal wires used for reinforcing elastomeric material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801197A (en) * 1954-07-07 1957-07-30 Gen Electric Electric terminal
DE3522802A1 (en) * 1984-07-06 1986-01-23 Cockerill-Sambre S.A., Seraing STEEL PRODUCT
US4670354A (en) * 1984-07-06 1987-06-02 Phenix Works Hot-galvanized steel product, notably intended to be phosphated, and method for preparing such a product
US4911991A (en) * 1987-03-02 1990-03-27 Pirelli Coordinamento Pneumatici S.P.A. Metal wires used for reinforcing elastomeric material

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