US3752211A - Method of making stretchable zinc fibers - Google Patents

Method of making stretchable zinc fibers Download PDF

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Publication number
US3752211A
US3752211A US00119870A US3752211DA US3752211A US 3752211 A US3752211 A US 3752211A US 00119870 A US00119870 A US 00119870A US 3752211D A US3752211D A US 3752211DA US 3752211 A US3752211 A US 3752211A
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United States
Prior art keywords
fiber
zinc
diameter
range
melt
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Expired - Lifetime
Application number
US00119870A
Inventor
Y Kuniyasu
A Matsumoto
E Isobe
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Mitsui Mining and Smelting Co Ltd
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Mitsui Mining and Smelting Co Ltd
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/16—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon
    • C22F1/165—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of other metals or alloys based thereon of zinc or cadmium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/002—Extruding materials of special alloys so far as the composition of the alloy requires or permits special extruding methods of sequences
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
    • B21C29/006—Gas treatment of work, e.g. to prevent oxidation or to create surface effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/045—Manufacture of wire or bars with particular section or properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
    • B21C37/047—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire of fine wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/005—Continuous casting of metals, i.e. casting in indefinite lengths of wire
    • 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

Abstract

A zinc fiber having a superior stretching ability, which is prepared through the steps of: melting an ingot metal having a zinc content of 99.6 percent or more, extruding the resulting melt through a nozzle having a bore diameter in the range of 20250 Mu by the use of an inert gas having a pressure in the range of 0.5-2.0 Kg/cm2, and cooling the resulting extruded fiber by contacting it with an air current flowing crosswise of the fiber at a speed of 3-5 m/sec, said zinc fiber consisting essentially of zinc, having a diameter in the range of 20-250 Mu and having crystalline structure composed of crystals of zinc, the mean size of the crystals being substantially equal to the diameter of the fiber.

Description

United States Patent [1 1 Kuniyasu et a1.
[451 Aug. 14, 1973 METHOD OF MAKING STRETCI-IABLE ZINC FIBERS [75] Inventors: Yoshihiro Kuniyasu, Kawasaki-shi,
Kanagawa-ken; Akio Matsumoto; Eiji Isobe, both of Tokyo, all of Japan [73] Assignee: Mitsui Mining & smelting Co., Ltd.,
Tokyo, Japan [22] Filed: Mar. 1, 1971 [21] App]. No.: 119,870
[30] Foreign Application Priority Data 3,645,657 2/1972 Otstot et a1. 164/82 X 3,613,158 10/1971 Mottem et al.. 164/82 X 3,602,291 8/1971 Pond 164/82 X Primary Examiner-J. Spencer Overholser Assistant Examiner.lohn E. Roethel AttorneyWoodhams, Blanchard & Flynn ABSTRACT A zinc fiber having a superior stretching ability, which is prepared through the steps of: melting an ingot metal having a zinc content of 99.6 percent or more, extruding the resulting melt through a nozzle having a bore diameter in the range of 20-250 1. by the use of an inert gas having a pressure in the range of 0.5-2.0 Kglcm and cooling the resulting extruded fiber by contacting it with an air current flowing crosswise of the fiber at a speed of 3-5 m/sec, said zinc fiber consisting essentially of zinc, having a diameter in the range of 20-250 4. and having crystalline structure composed of crystals of zinc, the mean size of the crystals being substantially equal to the diameter of the fiber.
1 Claim, No Drawings METHOD or MAKING STRETCHABLE' zmc FIBERS BACKGROUND OF THE INVENTION a. Field of the Invention The present invention relates to a metallic zinc fiber which possesses a sufficient stretching ability and workability so that it can be made into strands and woven fabrics by the same spinning process as is used with a natural fiber.
2. Description of the Prior Art A conventional method of manufacturing a metallic fiber in the prior art has been effected, for example, by casting a metal and extruding or rolling the casting by means of an extruding machine or a grooved-roll type rolling machine. According to this method, however, there is obtained only a coarsely drawn wire with a diameter of 0.5 mm at least. Therefore, the wire must be subjected to a further working employing wire-drawing dies in order to obtain a fiber of lesser diameter. Besides, in said working, a soft metal having a low melting point, such as zinc, which is made to pass through the dies, tends to adhere to the dies as it is heated by friction therewith at the time of passage, resulting in frequent breakage of the wire. Thus, it has been difficult to effect the industrial mass-production of a thin zinc fiber, especially, one having a diameter of less than 0.2 mm. Moreover, the fiber manufactured by this conventional method is of such quality that it has a stained surface due to the lubricant used in the wire-drawing dies and is apt to give rise to recrystallization due to the permanent set ascribable to the intense working, thereby resulting in a fiber composed of coarse crystals and having a poor stretching ability, whose performance can hardly be satisfactory either chemically or mechanically.
In view of these circumstances, we have made studies on a method for preparing a metallic fiber comprising subjecting a metal in molten state to an elevated pressure and making it flow out from a small orifice (hereinafter referred to as a melt-spinning process), and, by making good use of this process, we have found a method capable of industrial mass-production of a metallic fiber having a quality superior to the counterpartproduced by the conventional mechanical method.
SUMMARY OF THE INVENTION The object of the present invention is to provide a stretchable zinc fiber consisting essentially of zinc, which fiber has a diameter in the range of -250 and possesses crystalline structure composed of zinc crystals whose mean size is substantially equal to the diameter of the fiber. The zinc fiber isprepared by subjecting an ingot metal having a zinc content of 99.6 percent or more to a melt-spinning process comprising the steps of melting the metal, extruding the resulting melt from a nozzle having a bore diameter in the range of 20250p. by the use of an inert gas having a pressure in the range of 0.5-2.0 Kg/cm, and cooling the resulting extruded fiber by contacting it crosswise with an air current'flowing crosswise of the fiber at a speed of 3-5 m/sec.
A zinc fiber having a great stretching ability can be obtained according to the present invention by an appropriate selection of the purity of zinc in the metal to be used, the bore of the nozzle, the outflow speed-as well as the cooling speed of the melt, which are selected so that the diameter of a fiber resulting from the present invention possesses a remarkable strecting abil- .ity compared with the counterpart prepared by the of the nozzle is in the range of 20-250u. The 'outflow' speed of the melt is controlled by means of an inert gas, such as nitrogen, having a pressure of 0.5-2.0 Kg/cm', and the cooling speed of the melt is regulated by means of, for example, blowing the air at a speed of 3-5 m/sec ata'right angle tothe flow, namely, the direction of extrtision of the melt.
The zinc fiber thus obtained possesses not only a sufficient stretching ability but also a clean surface and much activity because it is free from any adhering additives such as lubricants. Therefore, the zinc fiber according to present invention can be applied to various uses such as in the following.
1. Because of the sufficient stretching ability thereof, it .can be worked into strands or manufactured into woven fabrics and is suitable for use in catalyst, electrode, etc.
2. It is capable being worked by elongation so as to reduce the diameter of the fiber.
3. Because its surface retains a clean and active state, it is capable of presenting better electrochemical behavior than a conventional'rolled plate or powder when applied to the electrode a battery.
Given in the following is an example embodying the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT EXAMPLE An ingot metal having a zinc-content of 99.6 percent and one having a zinc content of 99.99 percent were respectively melted at a temperature in the range of 430-450 C, and then a pressure of 2.0 Kg/cm nitrogen gas was applied to the respective melts in order to flowsame out from a nozzle having a round section and being 0.25 m/m and 0.12 mm in bore diameter, respectively. As a means for cooling, an air stream at a speed of 5 m/sec was blown at a right angle against the direction of the outflow of said melt, whereby the melt flownout was'solidified at a position'of 15-30 cm from the nozzle.
The mechanical properties of the resulting respective zinc fiber were as shown in the following table. As is apparent from the table, the product according to the conventional rolling process of cast zinc or that prepared by another melt-spinning process.
pared by another melt-spinning proccsss 98.0 150 about 75 5-7 Zinc fiber accord- 99.6 200 about 200 l5-20 ing to the v present invention 99.99 I about l50 50-70 Remark Temperature for melting: 430-450C, pressure for extrusion (by the use of pressured N, gas): 2 Kglcm. bore of nozzle: 0.4 mm dia. and 0.2 mm dia., method of cooling: forced-airdraft cooling (by blowing an air at a speed of 3-5 m/sec crosswise with the effluent of melt) What is claimed is: 1. A method of manufacturing a stretchable zinc
US00119870A 1970-12-15 1971-03-01 Method of making stretchable zinc fibers Expired - Lifetime US3752211A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11212670 1970-12-15

Publications (1)

Publication Number Publication Date
US3752211A true US3752211A (en) 1973-08-14

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Country Status (5)

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US (1) US3752211A (en)
CA (1) CA960411A (en)
DE (1) DE2125108A1 (en)
FR (1) FR2083193A5 (en)
GB (1) GB1351635A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282647A (en) * 1978-04-04 1981-08-11 Standard Microsystems Corporation Method of fabricating high density refractory metal gate MOS integrated circuits utilizing the gate as a selective diffusion and oxidation mask
US4852454A (en) * 1987-11-10 1989-08-01 Batchelder J Samuel Method and apparatus for delivering electric currents to remote targets
US6585151B1 (en) 2000-05-23 2003-07-01 The Regents Of The University Of Michigan Method for producing microporous objects with fiber, wire or foil core and microporous cellular objects
US20030170543A1 (en) * 2002-02-26 2003-09-11 Alltrista Zinc Products Company, L.P. Zinc fibers, zinc anodes and methods of making zinc fibers

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976590A (en) * 1959-02-02 1961-03-28 Marvalaud Inc Method of producing continuous metallic filaments
US3602291A (en) * 1968-09-04 1971-08-31 Battelle Development Corp Apparatus for casting metal filaments through an aerosol atmosphere
US3613158A (en) * 1969-12-15 1971-10-19 Monsanto Co Orifice assembly for spinning low viscosity melts
US3645657A (en) * 1969-07-02 1972-02-29 Monsanto Co Method and apparatus for improved extrusion of essentially inviscid jets

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2976590A (en) * 1959-02-02 1961-03-28 Marvalaud Inc Method of producing continuous metallic filaments
US3602291A (en) * 1968-09-04 1971-08-31 Battelle Development Corp Apparatus for casting metal filaments through an aerosol atmosphere
US3645657A (en) * 1969-07-02 1972-02-29 Monsanto Co Method and apparatus for improved extrusion of essentially inviscid jets
US3613158A (en) * 1969-12-15 1971-10-19 Monsanto Co Orifice assembly for spinning low viscosity melts

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4282647A (en) * 1978-04-04 1981-08-11 Standard Microsystems Corporation Method of fabricating high density refractory metal gate MOS integrated circuits utilizing the gate as a selective diffusion and oxidation mask
US4852454A (en) * 1987-11-10 1989-08-01 Batchelder J Samuel Method and apparatus for delivering electric currents to remote targets
US6585151B1 (en) 2000-05-23 2003-07-01 The Regents Of The University Of Michigan Method for producing microporous objects with fiber, wire or foil core and microporous cellular objects
US20030170543A1 (en) * 2002-02-26 2003-09-11 Alltrista Zinc Products Company, L.P. Zinc fibers, zinc anodes and methods of making zinc fibers

Also Published As

Publication number Publication date
CA960411A (en) 1975-01-07
FR2083193A5 (en) 1971-12-10
DE2125108A1 (en) 1972-07-06
GB1351635A (en) 1974-05-01

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