US2036667A - Bimetallic wire - Google Patents

Bimetallic wire Download PDF

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Publication number
US2036667A
US2036667A US703300A US70330033A US2036667A US 2036667 A US2036667 A US 2036667A US 703300 A US703300 A US 703300A US 70330033 A US70330033 A US 70330033A US 2036667 A US2036667 A US 2036667A
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US
United States
Prior art keywords
wire
steel
copper
bimetallic
manganese
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
US703300A
Inventor
Sidney D Williams
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.)
Copperweld Steel Co
Original Assignee
Copperweld Steel 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 Copperweld Steel Co filed Critical Copperweld Steel Co
Priority to US703300A priority Critical patent/US2036667A/en
Application granted granted Critical
Publication of US2036667A publication Critical patent/US2036667A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00Layered products comprising a layer of metal
    • B32B15/01Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/013Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
    • B32B15/015Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium the said other metal being copper or nickel or an alloy thereof
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/922Static electricity metal bleed-off metallic stock
    • Y10S428/923Physical dimension
    • Y10S428/924Composite
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00Stock material or miscellaneous articles
    • Y10S428/922Static electricity metal bleed-off metallic stock
    • Y10S428/9335Product by special process
    • Y10S428/939Molten or fused coating
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-base component
    • Y10T428/12903Cu-base component
    • Y10T428/12917Next to Fe-base component
    • Y10T428/12924Fe-base has 0.01-1.7% carbon [i.e., steel]
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/12All metal or with adjacent metals
    • Y10T428/12493Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771Transition metal-base component
    • Y10T428/12861Group VIII or IB metal-base component
    • Y10T428/12951Fe-base component
    • Y10T428/12972Containing 0.01-1.7% carbon [i.e., steel]

Definitions

  • This invention relates to the manufacture of wire, particularly steel wire of high tensile strength.
  • the invention is especially adapted for the manufacture of high tensile wire havin 5 a protective coating, as, for example, of copper,
  • the most approved method of manufacturing a copper covered wire is topour molten copper around a heated steel core or billet, thus eifecting a permanent unionbetween the copper and the steel, rolling the bimetallic billet thus formed into a wire rod, and finally drawing it into wire.
  • Copper has a melting point of about 1980 F.
  • a safe rolling temperature for copper coated steel billets is about 1700 R, which is more than 400 .lower than the ordinary steel rolling temperature. Copper coated steel billets in which the steel is of relatively low tensile strength can be successfully rolled at or below a temperature of about 1'700 F., but great difiiculty has been encountered in where it has been attempted to roll copper covered steel billets-in which the steel core has a high tensile strength. High tensile strength steels previously used have contained relatively .high percentages of carbon.
  • the steel core assumed various irregular shapes which seriously affected the distribution of the copper around it and resulted in a product having non-uniform protection against corrosion of the steel core.
  • the carbon in the steel core may vary between .05% and 30%. It is preferably over .10%, but less than .20%, a preferred specific range being .13% to .17%.
  • the manganese may vary between 5.0% and 1%, preferably between 1.75% and 2.25%.
  • A, specific example of a steel which has proved very satisfactory in practice contains about .15% carbon and about 1.95% manganese.
  • a hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from .05% to .30% and manganese from 5.0% to 1.0%, and a copper coating on said base wire.
  • a hot worked bimetallic wire comprising a steel base wire of high tensile strength contain-' ing carbon from .05% to .30% and manganese from 1.75% to 2.25%, and a copper coating on said base wire.
  • a hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from .13% to .17 and manganese from 1.75% to 2.25%, said base wire.
  • a hot worked bimetallic wire comprising a high tensile strength steel base wire containing about .15% carbon, about 1.95% manganese, and a copper coating on said base wire.
  • a hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon over .10% but under .20% and manganese over 1.75% but not over 2.25%, and a copper coating on said base wire.
  • a high tensile strength bimetallic wire cold drawn to a size substantially smaller than about 0.162 inch from a hot worked bimetallic rod comprising a steel core containing carbon from about .05% to about 30% and. manganese from about 5.0% to about 1.0%, and a copper sheath on said core.
  • a hot worked bimetallic wire oi! high tensile strength comprising a steel base wire containing carbon over .05% but under .20% and manganese from 1.75% to 2.25%, and a copper coating on said base wire.
  • a hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from about .1% to about .2% and manganese from 5% to 1%, and a copper coating on said base wire.
  • a hot worked bimetallic wire comprising a high tensile strength, steel base wire containing carbon over .05% but under .20% and manganese from 5.0% to 1.0%, and a copper coating on said base wire.
  • a hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from .13% to .17 and manganese from about 5% to about 1%, and a copper coating on said base wire.

Landscapes

  • Heat Treatment Of Steel (AREA)

Description

' the past ,50 tated. In the rolling Patented Apr. 7, 1936 UNITED STATES PATENT OFFICE BIMIETALLIC WIRE Sidney D. Williams, Canton,
Copperweld Steel Company,
Ohio, assignor to Glassport, Pa., a
corporation of Pennsylvania No Drawing.
Application December 20, 1933,
Serial No. 703,300
13 Claims.
This invention relates to the manufacture of wire, particularly steel wire of high tensile strength. The invention is especially adapted for the manufacture of high tensile wire havin 5 a protective coating, as, for example, of copper,
of such wire, notably in suspension bridge cables,
are materially simplified.
15 The most approved method of manufacturing a copper covered wire is topour molten copper around a heated steel core or billet, thus eifecting a permanent unionbetween the copper and the steel, rolling the bimetallic billet thus formed into a wire rod, and finally drawing it into wire.
Copper has a melting point of about 1980 F., and
it is therefore impossible in rolling the bimetallic billet to use temperatures of 2100 to 2200 F. which are ordinarilyemployed in rolling steel billets, since such temperatures would melt the copper. It has been found that a safe rolling temperature for copper coated steel billets is about 1700 R, which is more than 400 .lower than the ordinary steel rolling temperature. Copper coated steel billets in which the steel is of relatively low tensile strength can be successfully rolled at or below a temperature of about 1'700 F., but great difiiculty has been encountered in where it has been attempted to roll copper covered steel billets-in which the steel core has a high tensile strength. High tensile strength steels previously used have contained relatively .high percentages of carbon. Great difficulty is encountered when it is attempted to roll a copper coated steel billet of relatively high carbon content. In'starting such a copper coated steel bar into the rolls, it has been found necessary to apply great force to the bar, such as may be accomplished by four or five men grasp- 45 ing the bar with tongs and then running forward to force it into the rolls. If this was not done, ,the rolls would not grip the bar, but due to the fact that the steel was so hard, would grind off the copper from the end of the bar as they rooperation itself, it was extremely difllcult, if not impossible, to hold the roll passes to the degree of accuracy which should 'be maintained. It is very important that a uniform distribution of copper be obtained on the 55 wire rod obtained by rolling the bar in order to .ticular importance when core surrounded by a sheath or coating of copper.
. similar conditions the lower carbon,
provide uniform protection for the steel core.- The steel core assumed various irregular shapes which seriously affected the distribution of the copper around it and resulted in a product having non-uniform protection against corrosion of the steel core.
I have discovered that a proportion in the neighborhood of 2% of manganese in the steel core enables me to keep the carbon content of the steel core low enough. so as to readily hot roll the bimetallic billet or the like and obtain a. product which has nevertheless-remarkably high tensile strength. This discovery is of parworking with a steel Such copper covered steel can be satisfactorily rolled at a temperature of about 1700 R, which is considerably below the melting point of cop per and is therefore a safe temperature to employ. Such a bimetallic billet can be fed into the rolls without difilculty and the rolling mill passes can be maintained with the desired accuracy. The steel .core is not unduly distorted in the rolling process, but is maintained substantially round, and therefore a much improved distribution'of copper is obtained. The carbon in the steel core may vary between .05% and 30%. It is preferably over .10%, but less than .20%, a preferred specific range being .13% to .17%. The manganese may vary between 5.0% and 1%, preferably between 1.75% and 2.25%. A, specific example of a steel which has proved very satisfactory in practice contains about .15% carbon and about 1.95% manganese.
Although the present invention applies parsizes finer than about .162 inch without encountering considerable brittle wire, whereas under higher man'- ganese steel of the present invention can be drawn without difficulty from inch rod to .102
inch and it still possesses sufficient ductility and toughness to make a satisfactory wire.
' I have described the present preferred embodiment of my invention. It is to be understood, however, that the-invention may be otherwise embodied within the scope of the following claims.
be cold worked to a 40 bon from .05%
5.0% to 1.0%, and a copper coating on said base.
4. A hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from .05% to .30% and manganese from 5.0% to 1.0%, and a copper coating on said base wire.
5. A hot worked bimetallic wire comprising a steel base wire of high tensile strength contain-' ing carbon from .05% to .30% and manganese from 1.75% to 2.25%, and a copper coating on said base wire.
6. A hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from .13% to .17 and manganese from 1.75% to 2.25%, said base wire.
7. A hot worked bimetallic wire comprising a high tensile strength steel base wire containing about .15% carbon, about 1.95% manganese, and a copper coating on said base wire.
and manganese to .30% and manganese from and a copper coating on 8. A hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon over .10% but under .20% and manganese over 1.75% but not over 2.25%, and a copper coating on said base wire.
9. A high tensile strength bimetallic wire cold drawn to a size substantially smaller than about 0.162 inch from a hot worked bimetallic rod comprising a steel core containing carbon from about .05% to about 30% and. manganese from about 5.0% to about 1.0%, and a copper sheath on said core.
"10. A hot worked bimetallic wire oi! high tensile strength comprising a steel base wire containing carbon over .05% but under .20% and manganese from 1.75% to 2.25%, and a copper coating on said base wire.
11. A hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from about .1% to about .2% and manganese from 5% to 1%, and a copper coating on said base wire.
12. A hot worked bimetallic wire comprising a high tensile strength, steel base wire containing carbon over .05% but under .20% and manganese from 5.0% to 1.0%, and a copper coating on said base wire.
13. A hot worked bimetallic wire comprising a steel base wire of high tensile strength containing carbon from .13% to .17 and manganese from about 5% to about 1%, and a copper coating on said base wire.
SIDNEY D. WILLIAMS.
US703300A 1933-12-20 1933-12-20 Bimetallic wire Expired - Lifetime US2036667A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507400A (en) * 1943-08-02 1950-05-09 Sk Wellman Co Method of electroplating with iron and cobalt
US2860098A (en) * 1954-03-31 1958-11-11 Vitro Corp Of America Metal coating
US3089228A (en) * 1957-07-26 1963-05-14 Post Office Magnetic strip material
US3311458A (en) * 1963-07-19 1967-03-28 Horizons Inc Copper coated steel
US5087300A (en) * 1989-09-01 1992-02-11 Fujikura Ltd. Method for manufacturing high-conductivity copper-clad steel trolley wire
US5170015A (en) * 1990-07-02 1992-12-08 Sumitomo Electric Industries, Ltd. Wire conductors for automobiles
US7748536B2 (en) 2004-07-26 2010-07-06 Cassese Joseph D Container for snack foods

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2507400A (en) * 1943-08-02 1950-05-09 Sk Wellman Co Method of electroplating with iron and cobalt
US2860098A (en) * 1954-03-31 1958-11-11 Vitro Corp Of America Metal coating
US3089228A (en) * 1957-07-26 1963-05-14 Post Office Magnetic strip material
US3311458A (en) * 1963-07-19 1967-03-28 Horizons Inc Copper coated steel
US5087300A (en) * 1989-09-01 1992-02-11 Fujikura Ltd. Method for manufacturing high-conductivity copper-clad steel trolley wire
US5170015A (en) * 1990-07-02 1992-12-08 Sumitomo Electric Industries, Ltd. Wire conductors for automobiles
US7748536B2 (en) 2004-07-26 2010-07-06 Cassese Joseph D Container for snack foods

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