US3812901A - Method of producing continuous filaments using a rotating heat-extracting member - Google Patents

Method of producing continuous filaments using a rotating heat-extracting member Download PDF

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Publication number
US3812901A
US3812901A US00328121A US32812173A US3812901A US 3812901 A US3812901 A US 3812901A US 00328121 A US00328121 A US 00328121A US 32812173 A US32812173 A US 32812173A US 3812901 A US3812901 A US 3812901A
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United States
Prior art keywords
filament
force
rotating
tension
heat
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Expired - Lifetime
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US00328121A
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English (en)
Inventor
C Mobley
O Stewart
R Maringer
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Battelle Development Corp
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Battelle Development Corp
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Publication date
Application filed by Battelle Development Corp filed Critical Battelle Development Corp
Priority to US00328121A priority Critical patent/US3812901A/en
Priority to CA181,805A priority patent/CA1006676A/en
Priority to AU63458/73A priority patent/AU481381B2/en
Priority to IL43798A priority patent/IL43798A/en
Priority to GB5729473A priority patent/GB1435990A/en
Priority to NLAANVRAGE7317236,A priority patent/NL177089C/xx
Priority to ES421578A priority patent/ES421578A1/es
Priority to DK689073A priority patent/DK151294C/da
Priority to FR7346688A priority patent/FR2215282B1/fr
Priority to LU69058A priority patent/LU69058A1/xx
Priority to BE139301A priority patent/BE809140A/fr
Priority to IT19186/74A priority patent/IT1006791B/it
Priority to IE37/74A priority patent/IE38722B1/xx
Priority to SE7400463A priority patent/SE385441B/xx
Priority to DE19742402512 priority patent/DE2402512C3/de
Priority to NO740174A priority patent/NO138192C/no
Priority to AT53474A priority patent/AT337880B/de
Priority to JP49012687A priority patent/JPS5238927B2/ja
Application granted granted Critical
Publication of US3812901A publication Critical patent/US3812901A/en
Anticipated expiration legal-status Critical
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    • 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

Definitions

  • the present invention relates to the field of the art where a source of molten material is solidified on a moving.heat-extracting member so as to form an elongated solid producton such a member.
  • the prior art pertinent to the present invention would include US. Pat. application Ser. No. 251,985, assigned to a common assignee, where a method of producing filamentary materials is disclosed. In that reference there are no external forces applied to the filament as it spontaneously leaves the rotating heatextracting member and as a consequence the point of filament release varies somewhat during the process.
  • 2,825,108 discloses a method of making filament by impinging a stream of molten material onto a rapidly moving heat-extracting member.
  • variations of the adhesion to the rotating heat-extracting member made the release point unstable and as a consequence both such processes have shortcomings that the present invention alleviates.
  • the present invention operates at high rotational speeds and produces a small filamentary product.
  • One embodiment of the present invention also reduces filament breakage by controlling the rate of heat removal from the filament subsequent of formation from the melt thereby reducing filament embrittlement caused by solid state transformations dependent on the rate of heat removal.
  • the present invention is one object of the present invention to stabilize the release point of the filament from the rotating heatextracting member. In doing so the present invention alleviates numerous shortcomings of the aforementioned prior art methods.
  • the present invention is applicable to prior art forming techniques that relay on spontaneous release of the filamentary product from the rotating heat-extracting member.
  • the present invention makes the trajectory of the'filament independent of the speed of rotation of the heat-extracting member, therefore, eliminating some collection problems.
  • the two noted prior art processes introduce small cross-section filaments into a gaseous atmosphere at high velocities. This results in the generation of aerodynamic forces on such filaments that tend to buckle the filamentinmid-air. Where the object of the process is to produce continuous filament, this buckling and the resultant tangling of the filament prevent collection of the filament in a usable form and thereby limits its use.
  • the present invention reduces the aero dynamic forces exerted-on the filament by having the filament slide on'a support between the release point and the tension exerting means and therefore the filament may be collected in an orderly manner that was impossible with the prior art methods.
  • the sliding contact of the filament in contact with the support has additional benefits. First it limits the access of the surrounding atmosphere to the surface of the filament which reduces oxidation of the filament. Second the support itself can be used to control the rate of heat removal from the filament by manipulating the thermal capacity of the support means. In this manner materials that undergo embrittling transformations dependent on the rate of heat removal could be collected where such an embrittlement would have ordinarily made such a filament virtually uncollectable.
  • the present invention not only improves the application of the prior art techniques of producing continuous filament but makes such techniques practical for the collection of continuous lengths of materials heretofore considered unmanageably brittle if produced directly from the molten material.
  • the present invention is a methodrof stabilizing the release point of afilament producingmethod that solidifies a filamentary product on the surface of a rotating heat-extracting member relying on spontaneous release of the fiber from the surface of the rotating member.
  • the present invention would contemplate the application of a tension force to a filament subsequent to its release from a rotating heat-extracting member and the supporting of such a filament on a member below the free flight trajectory of 'such a filament leaving the rotating member without the applied tension.
  • the magnitude to the tension is less than other forces causing the release of the filament from the rotating member and is sufficient only to overcome variations in the adhesion of the filament to the rotating member with the filament spontaneously-releasing from the rotating member with or without the application of the tension force.
  • FIG. 1 is a partial cross section of the invention as it is used with one particular filament forming method showing the relationship between the process of filament formation and the application of an aligned force through the filament.
  • FIG. 2 is a cross section of the circumferential edge of the rotating member of FIG. 1.
  • FIG. 3 is a partial cross section of the invention as it is used with a second filament forming method showing the relationship of the free flight trajectory to the path of the filament utilizing the present invention.
  • FIG. 4 is one embodiment of a means used to generate the tension force in the filament.
  • the present invention is an improvement to processess forming continuous solid filament by at least partially solidifying molten material in filament form on a rotating heat-extracting member where the filament is spontaneously released from the rotating member.
  • the small tension and bending forces applied even to materials exhibiting little measurable ductility do not promote breakage and product continuity is significantly easier with the present invention than with the cited prior art techniques involving spontaneous filament release.
  • the application of a directed tension force stabi lizes the process of filament formation by inducing a constant release point of the filament from the heatextracting member.
  • the present invention is operable with extremely brittle materials in some embodiments and facilitates a constant release point without inducing filament breakage.
  • FIG. 1 shows a cross-sectional view of one embodiment of the present invention.
  • the rotating disk-like member 30 is in contact on its circumferential edge 32 with the surface ofa pool of molten material 10.
  • the final filament. is shown as being solidified on the circumferential edge 32 as 20 and then leaving contact with the edge 32 at the release point 21.
  • the release point 21 is determined in part by the configuration of the guide member 50 and the force F applied through the filament 20.
  • the force F has two operative components.
  • F is the tension component of the force F at the point 51 where the filament 20 begins contact with the member 50 and F, the component normal to F at point 51 keeping the filament in contact with the member 50.
  • the contact of the filament 20 with a support member 50 between the release of filament and the means used to apply the force F is a necessary element of the present invention.
  • the application ofa tension force in the filament with the support produces an improvement in filament continuity.
  • the member 50 can be utilized to provide other improvement to the process.
  • the contact with the support member 50 shields one side of the filament from the gaseous atmosphere while reducing the access of the gas to the other side by preventing unimpeded gas flow over the filament.
  • the member 50 may also be used as a means to control the rate of heat removal from the filament subsequent to formation. Where the filament material undergoes a heat rate dependent solid state transformation (as for example the martensitic reaction of carbon steel) the member 50 may be heated so as to reduce the heat removal rate from the filament and thereby reduce the quenching effect of the atmosphere surrounding the filament subsequent to its formation from the melt.
  • the thermal capacity of the support member 50 may be used to control the rate of heat removal from the filament. If it is desired to accelerate the rate of heat removal from the filament, the support member would have a high thermal capacity.
  • Such a member could be a mass of material having a high intrinsic heat capacity or a solid material artificially cooled.
  • the support member would be heated thereby lowering its capacity to remove heat fromthe filament in contact with it.
  • thermal capacity does not correspond to a specific material property such as heat capacity or thermal conductivity but is simply descriptive of the capacity of the support to alter the temperature of the filament in contact with it by the transport of heat.
  • FIG. 2 shows a cross-sectional view of the circumferential edge of the rotating member 30disposed to produce a filamentary product operable with the present invention.
  • the embodiment shown in FIG. 2 is from the prior art (US. Pat. application 251,985) and consists of a disk-like member 30 having a V-shaped peripheral edge.
  • the legs of the V 31 are angularly disposed on angle 0 with the tip of the V 32 (see FIG. 1) having a radius of curvature in the plane of the drawing in FIG. 2 of r.
  • the V-shaped circumferential edge 32 is at a distance R from the axis of rotation of the member 30 below the surface 15 of the melt 10.
  • a preferred embodiment of the present invention comprises the embodiments of FIGS. 1 and 2 to produce continuous filamentary material when the member 30 is of the dimensions in the ranges:
  • the present invention is also operable with other means of producing filamentary material by solidifying molten material in the form of a filament on a rotating heat-extracting member.
  • FIG. 3 depicts the present invention as used with a variant of the teachings of U.S. Pat. No. 2,825,108, Pond.
  • the rotating heat-extracting member 30 is a cylindrical disk-like member having a smooth outer radial surface 33.
  • a closed container 40 with a source of gas pressure 43, is used to heat a volume of molten material by heating element 42 adjacent the container walls.
  • An orifice 41 in the container 40 forms the molten material 10 into a continuous filamentary shape 22 upon the application of the gas pressure.
  • the present invention has been shown with two methods of producing continuous filamentary material but is not limited to those embodiments.
  • the invention is applicable to any filament producing method where a continuous solid filament is produced by the solidification of molten material on the surface of a moving heat-extracting member where such filament is spontaneously released from the surface without the necessity of external forces to break the adhesion of the filament to the surface.
  • filamentary product we mean that the product should have an effective diameter less than about 60 mils.
  • An effective diameter is a way of defining the size of a filament having a cross section that may be noncircular.
  • a filament having an effective diameter of 60 mils has a cross-sectional area equal to a circular filament 60 mils in diameter. Therefore the present invention is operable with filament having large width-tothickness ratios commonly termed ribbon fiber.
  • the present invention is not inherently limited as to the speed at which the member 30 is rotated (which of course controls the linear product rate of filament) as long as the means used to generate the tension force F can do so at the operating speed.
  • a synchronous carousel arrangement as depicted in FIG. 4 is one operable embodiment that generates a self-regulating tension force of the required magnitude.
  • the member 60 rotates on a horizontal plane where the filament 20 naturally exits the support 50.
  • the member 60 is rotated at a continuous speed having a vertical containment 61 at its outer radius.
  • the selfregulating force is generated by having this outer radius rotating at a linear velocity in excess of the rate at which the filament 20 is supplied.
  • the difference in rates is not known to be critical, however, this embodiment is known tobe operable where the linear velocity at the vertical containment is 100 percent greater than the input velocity of the filament.
  • the rotation of the member 60 carries the filament around the circumference but in doing so places some portion of the filament 20 on a radius of the surface 65 where the linear velocity of the filament equals that of the surface 65 at impingement so as there is no relative motion between the filament 20 and the surface 65.
  • This radius is termed the equilibrium collection radius 62 on the turntable-like surface 65. in this manner the filament is free to determine a radius on the surface 65 without the need for precisely matched speeds of the collector to the filament producing means or mechanical guidance of the filament to 6 the equilibrium collection radius 62.
  • the filament 20 is collected at such a radius, there is a force transrnitted to the filament'Zll that draws the filament into contact with the support member and stabilizes the release point of the filament from the rotating heatextracting member.
  • the only requirement of the tension applying means is that it produce a limited'and relatively constant pulling-force F of a specific magnitude.
  • the exact tension required to utilize the benefits of the invention qualitatively depends upon the system used, the radius of the member 34), the size and composition of the filament, and the placement and shape of the support 56.
  • the force that holds the filament to the surface of the rotating member is composed of a minimum force of adhesion F plus A the deviation of the adhesion force above the value of F It is the effect of the deviation A that makes the release point vary in relation to the position on the rotating member.
  • the force that holds the filament to the surface of the rotating member is composed of a minimum force of adhesion F plus A the deviation of the adhesion force above the value of F It is the effect of the deviation A that makes the release point vary in relation to the position on the rotating member.
  • the first m'ajor'force is centrifugal force (F which is normal to the forming surface.
  • the magnitude of F is dependent on the mass of the filament and the diameter and speed of the rotating member.
  • the second force is then a predominantly shear force created by the differential thermal contraction (F between the filament and the forming surface upon cooling. This force is parallel to the forming surface and is determined by the difference between the thermal contraction of the materials comprising the filament and the material comprising the forming surface at their respective operating temperatures.
  • the third major force is the tension force (F exerted on the filament.
  • Such a force would, depending on the geometric relation of the tension tothe release point, have both normal (F and shear (F components.
  • the inherent force is believed to have a negligible shear component and is comprised mainly of a force normal to the forming surface. This force is generated by the weight of thecontinuous filament not adherent to the forming surface nor supported by the member 50.
  • F A minimum force of adhesion of the filament to the forming surface A the deviation of the adhesion force above the value of F F the force normal to the forming surface generated by centrifugal force on the filament F the force parallel to the forming surface generated by differential thermal contraction F the induced tension in the filament having both normal and shear components F the component of the tension force F normal to the forming surface F the component of the tension force F parallel to the forming surface F m the inherent force generated when the product is continuous, normal to the forming surface it is the object of the present invention .to use F to override the effect of A so as to stabilize the point of release of the filament from the forming surface.
  • the release of the filament from the forming surface is spontaneous with or without the application of F and therefore This simply means that where no external tension F is applied, centrifugal force, differential thermal contraction, and the small inherent tension force are sufficient to induce filament release.
  • the problem is that the varying adhesion force F A makes the release point vary thereby inducing instability to both filament production and collection.
  • the shear component F acts in conjunction with the other shear force F on the forming surface.
  • the release point will move toward a position on the forming surface minimizing the normal component F and unless the geometry is correct, the equilibrium position may be a point prior to filament formation or at a point where the filament has insufficientstrength to withstand the tension.
  • F normal force
  • F shear force
  • F and A could be broken down into their normal and shear components, however, it is sufficient to describe those forces in general since the shear components do not change the point of filament release but merely reduce the adhesive bond so the normal forces can more readily affect the separation of the filament from the forming surface.
  • the member 50 determines the path of the filament 20 and therefore the direction of the tension force F
  • the presence of the support 50 is critical to the present of the filament. While there is no indication that the following configuration is the only operable embodiment of the invention, we have had particular success where the support member is below the free flight trajectory of the released filament and the-tension force is applied so as to lower the path of the filament onto the support member. It should also be possible to support the filament above its free flight path, however, care must be taken to prevent the position of the support to generate a large normal force at the release point so as to move the release point too far toward the area of filament formation.
  • the embodiment illustrated in FIG. 3 is confined to metallic filament and the embodiment illustrated in FlGS... l and 2 is confined to materials having the following properties at a temperature within 25 percent of their melting points in K: a viscosity in the range of from 10 to l poise, a surface tension in the range of from 10 to 2000 dynes/cm, a reasonably discrete melting point, and at least momentary compatibility with a solid material having sufficient thermal capacity to initiate solidifieationFor'the purpose of definition a reasonably discrete melting point is in general where a material exhibits a discontinuous increase in viscosity upon removal of heat from the material while in a molten state.
  • the present invention is not limited to specific materials found to be critical in the embodiments of the filament forming methods.
  • the present invention is operable on any filamentary material formed by solidification on a moving heat-extracting member.
  • EXAMPLE 1 The carousel arrangement of FIG. 4 was used to put a tension on a continuous aluminum fiber produced by rotating a brassheat-extracting member of the general configuration of the prior art embodiment of FIG. 2 in contact with the surface of the molten aluminum.
  • the aluminum was commercially pure (1 100) aluminum at a temperature of approximately l400F.
  • the rotating member had a V-shap'ed circumferential edge and a diameter of approximately 8 inches. The circumferential edge was in contact with the surface'of the molten aluminum at a linear rate of approximately 15 feet per second. After release from the rotating member, the filament was supported below its free flight trajectory on a sheet metal support.
  • the filament was directed by the support onto a turntable rotating so as to yield a radius having a velocity approximating that of the filament.
  • the filament was collected on an equilibrium radius lowering the filament onto the support member and continuous aluminum filament having an effective diameter of 21 mils was produced for 30 minutes of operation.
  • EXAMPLE 2 The same tension-inducing embodiment used in the previous example was used to produce continuous austenitic manganese (Hadfield) steel filament having a typical analysis of 11-13% Mn, l.01.3% C, O.70.3% Si, balance Fe.
  • a nickel rotating heat-extracting member was used having the V-shaped, circumferential edge of FIG. 2.
  • the wheel was 8 inches in diameter and was water cooled at a flow rate of gallons per hour.
  • the forming surface had a peripheral speed of 5 feet per second. Lengths of steel fiber up to 900 feet long were produced having an effective diameter of about 18 mils.
  • the melt'temperature during filament formation was approximately 2800F.
  • EXAMPLE 3 Again the horizontal turntable embodiment was utilized to provide tension to continuous filament.
  • the filament produced was white cast iron of a composition approximating 4.0% C, 0.8% Si, 0.7% Mn with the balance essentially Fe.
  • the final filament had little measurable ductility and was extremely brittle.
  • a copper wheel formed the filament by contacting its V-shaped circumferential edge moving at approximately 7 feet per second to the surface of the molten iron at 2670F.
  • the tension drew the filament down from its free flight trajectory into sliding contact with a support member and lengths of brittle cast iron fiber 50 feet long were collected on the tension inducing turntable.
  • the filament had an effective diameter of l2 mils.
  • the horizontal turntable was used to induce tension in the filamentary product.
  • the filament produced was a plain carbon mild steel (Type 1005) containing approximately 0.05% carbon, 0.2% Mn with the balance essentially iron.
  • An aluminum disk with a V-shaped periferal edge was used to form the filament by contacting its acute angle with the surface of molten steel at 7 feet per second.
  • the steel was at a temperature of approximately 2900F.
  • Thefilament was in sliding contact with a support below its free flight trajectory and continuous filament was collected on the turntable.
  • the filament had an effective diameter of 25 mils.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Inorganic Fibers (AREA)
  • Extrusion Of Metal (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
US00328121A 1973-01-30 1973-01-30 Method of producing continuous filaments using a rotating heat-extracting member Expired - Lifetime US3812901A (en)

Priority Applications (18)

Application Number Priority Date Filing Date Title
US00328121A US3812901A (en) 1973-01-30 1973-01-30 Method of producing continuous filaments using a rotating heat-extracting member
CA181,805A CA1006676A (en) 1973-01-30 1973-09-24 Method of producing continuous filament
AU63458/73A AU481381B2 (en) 1973-01-30 1973-12-11 Method of producing continuous filaments using a rotating heat extracting member
IL43798A IL43798A (en) 1973-01-30 1973-12-11 Method of producing continuous filament by solidification of molten material on a moving heat extracting member
GB5729473A GB1435990A (en) 1973-01-30 1973-12-11 Method of procuing continuous solid filament
NLAANVRAGE7317236,A NL177089C (nl) 1973-01-30 1973-12-17 Werkwijze voor het vervaardigen van draadvormig materiaal uit een smelt.
DK689073A DK151294C (da) 1973-01-30 1973-12-18 Fremgangsmaade til fremstilling af traadformet materiale.
ES421578A ES421578A1 (es) 1973-01-30 1973-12-18 Procedimiento para formar material filamentoso solido con- tinuo.
FR7346688A FR2215282B1 (fr) 1973-01-30 1973-12-21
LU69058A LU69058A1 (fr) 1973-01-30 1973-12-21
BE139301A BE809140A (fr) 1973-01-30 1973-12-27 Procede de preparation d'un filament continu
IT19186/74A IT1006791B (it) 1973-01-30 1974-01-08 Metodo per produrre filamento continuo
IE37/74A IE38722B1 (en) 1973-01-30 1974-01-08 A method of producing continuous solid filament
SE7400463A SE385441B (sv) 1973-01-30 1974-01-15 Metod for kontinuerlig tradtillverkning
DE19742402512 DE2402512C3 (de) 1973-01-30 1974-01-19 Verfahren zur Herstellung von fadenförmigem Material
NO740174A NO138192C (no) 1973-01-30 1974-01-21 Fremgangsmaate ved fremstilling av traadformet materiale
AT53474A AT337880B (de) 1973-01-30 1974-01-22 Verfahren zur herstellung von kontinuierlichen faden
JP49012687A JPS5238927B2 (fr) 1973-01-30 1974-01-30

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US00328121A US3812901A (en) 1973-01-30 1973-01-30 Method of producing continuous filaments using a rotating heat-extracting member

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US3812901A true US3812901A (en) 1974-05-28

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US00328121A Expired - Lifetime US3812901A (en) 1973-01-30 1973-01-30 Method of producing continuous filaments using a rotating heat-extracting member

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US (1) US3812901A (fr)
JP (1) JPS5238927B2 (fr)
AT (1) AT337880B (fr)
BE (1) BE809140A (fr)
CA (1) CA1006676A (fr)
DK (1) DK151294C (fr)
ES (1) ES421578A1 (fr)
FR (1) FR2215282B1 (fr)
GB (1) GB1435990A (fr)
IE (1) IE38722B1 (fr)
IL (1) IL43798A (fr)
IT (1) IT1006791B (fr)
LU (1) LU69058A1 (fr)
NL (1) NL177089C (fr)
NO (1) NO138192C (fr)
SE (1) SE385441B (fr)

Cited By (17)

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Publication number Priority date Publication date Assignee Title
US3856074A (en) * 1973-04-06 1974-12-24 Allied Chem Method of centrifugal production of continuous metal filaments
US3862658A (en) * 1973-05-16 1975-01-28 Allied Chem Extended retention of melt spun ribbon on quenching wheel
US3863700A (en) * 1973-05-16 1975-02-04 Allied Chem Elevation of melt in the melt extraction production of metal filaments
US3896203A (en) * 1973-04-23 1975-07-22 Battelle Development Corp Centrifugal method of forming filaments from an unconfined source of molten material
US3908745A (en) * 1974-06-21 1975-09-30 Nl Industries Inc Method and means for producing filaments of uniform configuration
DE2906814A1 (de) * 1978-03-03 1979-09-06 Nat Standard Co Verfahren und vorrichtung zur herstellung von festen filamentartigen gegenstaenden
US4190095A (en) * 1976-10-28 1980-02-26 Allied Chemical Corporation Chill roll casting of continuous filament
US4262732A (en) * 1978-07-20 1981-04-21 Nivarox S. A. Apparatus and process relating to manufacturing of a filament directly from a molten material
EP0040306A1 (fr) * 1980-05-15 1981-11-25 International Business Machines Corporation Procédé de fabrication de rubans semi-conducteurs à gros grain
US4326579A (en) * 1980-01-23 1982-04-27 National-Standard Company Method of forming a filament through melt extraction
US4337886A (en) * 1979-04-09 1982-07-06 United Technologies Corporation Welding with a wire having rapidly quenched structure
US4375426A (en) * 1979-10-18 1983-03-01 Johnson, Matthey & Co., Limited Catalytic fibre packs for ammonia oxidation
US4709745A (en) * 1984-05-18 1987-12-01 Irving Rossi Process and apparatus for making thin steel slabs
US4751957A (en) * 1986-03-11 1988-06-21 National Aluminum Corporation Method of and apparatus for continuous casting of metal strip
US5027886A (en) * 1990-07-12 1991-07-02 Pitney Bowes Inc. Apparatus and method for fabrication of metallic fibers having a small cross section
US6604570B1 (en) 2002-05-10 2003-08-12 Fiber Tech Co., Ltd. Apparatus and method for manufacturing metal filaments
CN107414038A (zh) * 2017-07-29 2017-12-01 衡阳功整钢纤维有限公司 便于从感应炉中抽出更多钢水的钢纤维抽丝系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1601925A (en) * 1977-06-22 1981-11-04 Johnson & Nephew Ambergate Ltd Production of filamentary material
US4215084A (en) * 1978-05-03 1980-07-29 The Battelle Development Corporation Method and apparatus for producing flake particles
JPS5528357A (en) * 1978-08-19 1980-02-28 Sumitomo Special Metals Co Ltd Manufacture of fine crystalline, thin continuous body- shaped liquid quenched metal
JPS60121049A (ja) * 1983-12-02 1985-06-28 Nippon Steel Corp 金属線材の製造方法

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US989075A (en) * 1909-04-28 1911-04-11 Willard Griffin Staples Metal-strand machine.
US3548581A (en) * 1968-10-02 1970-12-22 Bobkowicz E Method and apparatus for ringless spinning of fiber-polymer yarns
US3710842A (en) * 1970-12-28 1973-01-16 Battelle Development Corp Method of producing controlled length metal filaments

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US2825108A (en) * 1953-10-20 1958-03-04 Marvaland Inc Metallic filaments and method of making same

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
US745786A (en) * 1902-08-18 1903-12-01 Albert L Cole Machine for fibering metals.
US989075A (en) * 1909-04-28 1911-04-11 Willard Griffin Staples Metal-strand machine.
US3548581A (en) * 1968-10-02 1970-12-22 Bobkowicz E Method and apparatus for ringless spinning of fiber-polymer yarns
US3710842A (en) * 1970-12-28 1973-01-16 Battelle Development Corp Method of producing controlled length metal filaments

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3856074A (en) * 1973-04-06 1974-12-24 Allied Chem Method of centrifugal production of continuous metal filaments
US3896203A (en) * 1973-04-23 1975-07-22 Battelle Development Corp Centrifugal method of forming filaments from an unconfined source of molten material
US3862658A (en) * 1973-05-16 1975-01-28 Allied Chem Extended retention of melt spun ribbon on quenching wheel
US3863700A (en) * 1973-05-16 1975-02-04 Allied Chem Elevation of melt in the melt extraction production of metal filaments
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CN107414038A (zh) * 2017-07-29 2017-12-01 衡阳功整钢纤维有限公司 便于从感应炉中抽出更多钢水的钢纤维抽丝系统
CN107414038B (zh) * 2017-07-29 2020-05-05 衡阳功整钢纤维有限公司 便于从感应炉中抽出更多钢水的钢纤维抽丝系统

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IL43798A0 (en) 1974-03-14
IE38722L (en) 1974-07-30
CA1006676A (en) 1977-03-15
DE2402512A1 (de) 1974-08-08
IE38722B1 (en) 1978-05-24
NL177089C (nl) 1985-08-01
IT1006791B (it) 1976-10-20
SE385441B (sv) 1976-07-05
NO138192C (no) 1978-07-26
NO138192B (no) 1978-04-17
AU6345873A (en) 1975-06-12
ES421578A1 (es) 1976-04-01
DE2402512B2 (de) 1977-02-17
NO740174L (no) 1974-07-31
DK151294B (da) 1987-11-23
BE809140A (fr) 1974-04-16
DK151294C (da) 1988-05-30
FR2215282B1 (fr) 1976-06-25
NL7317236A (fr) 1974-08-01
IL43798A (en) 1976-09-30
JPS5051926A (fr) 1975-05-09
LU69058A1 (fr) 1974-02-22
FR2215282A1 (fr) 1974-08-23
ATA53474A (de) 1976-11-15
AT337880B (de) 1977-07-25
JPS5238927B2 (fr) 1977-10-01
GB1435990A (en) 1976-05-19

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