US3380278A - Method and apparatus for drawing solid wire stock - Google Patents

Method and apparatus for drawing solid wire stock Download PDF

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Publication number
US3380278A
US3380278A US499186A US49918665A US3380278A US 3380278 A US3380278 A US 3380278A US 499186 A US499186 A US 499186A US 49918665 A US49918665 A US 49918665A US 3380278 A US3380278 A US 3380278A
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Prior art keywords
rolls
wire
aperture
die
input
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Expired - Lifetime
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US499186A
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English (en)
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Elmer D Dilling
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Titanium Metals Corp
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Titanium Metals Corp
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Priority to US499186A priority Critical patent/US3380278A/en
Priority to DE19671602247 priority patent/DE1602247A1/de
Priority to CH794667A priority patent/CH459117A/de
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Publication of US3380278A publication Critical patent/US3380278A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, wire, rods, tubes or like semi-manufactured products by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels for metal drawing
    • B21C3/02—Dies; Selection of material therefor; Cleaning thereof
    • B21C3/08—Dies; Selection of material therefor; Cleaning thereof with section defined by rollers, balls, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/12—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process axes being arranged in different planes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0028—Drawing the rolled product

Definitions

  • ABSTRACT OF THE DISCLGSURE A wire forming tool made up of sets of rolls with grooved peripheries which combine to define rolling apertures of selected configuration and size for reducing the diameter of metal wire pulled therethrough.
  • This invention relates to metal forming and more particularly it concerns a novel method and apparatus for cold drawing wires from bar stock.
  • wire drawing operations involved the use of a fixed die consisting essentially of an apertured plate of hardened metal.
  • the entrance end of the aperture was rounded to provide a gradual transition for the stock from a larger input diameter to a smaller output diameter as it passed through the plate.
  • the present invention makes it possible to produce cold drawn wire having excellent surface quality, good roundness, and essentially complete freedom from center porosity; such cold drawing further being accomplished with a minimum of power. Moreover, even using titanium wire, reductions of 32-45% per pass are attainable with the 3,38%,278 Patented Apr. 30, 1968 present invention; and reductions of up to 93% in seven passes have been achieved without annealing.
  • the present invention provides additional advantages in that it makes it possible to orient the crystalline structure of the material being drawn in a particular manner such that maximum tensile strength is achieved. Also, during drawing it is not necessary to coat the wire as is required in conventional fixed aperture dies, only a soluble oil coolant being required to keep the temperature at a reasonable level.
  • solid round wire stock is cold drawn to a smaller diameter by pulling the wire through two closely spaced apertures, each of which is defined by the adjacent peripheral surfaces of a number of die rolls.
  • the axes of the die rolls defining each aperture are in a common plane which also includes the aperture.
  • peripheral surfaces of the rolls defining the first aperture are curved in a concave manner, but their centers of curvature are beyond the axis or center of the aperture. The effect of this is to provide a certain amount of reduction in the wire drawn through the aperture; and at the same time, to change the cross sectional configuration of the wire to an out of round or lobal shape.
  • the peripheral surfaces of the rolls defining the second aperture are also curved in a concave manner. However, the centers of curvature of these rolls do lie at the center of the aperture defined by them so that the cross sectional configuration of this second aperture is circular.
  • the rolls of the second aperture also are oriented such that each of the lobes formed on the Wire by the first aperture is centered on the peripheral surface of a particular one of these second rolls. The pressure of the second rolls is thus directed so as to produce cross sectional deformation rather than twisting of the wire.
  • the two sets of rolls forming the two apertures are mounted in a common frame in an arrangement such that the rolls of one set are partially interleaved with the rolls of an adjacent set.
  • This partial interleaving permits the use of relatively large diameter rolls, yet it allows the two apertures defined by the rolls to be located very close to each other. This is especially important for it permits the rolls of the second aperture to act upon the lobes of the partially drawn wire before the wire becomes twisted sufficiently to allow the pressure of these second rolls to produce twisting rather than reduction of the wire.
  • a further feature of the present invention lies in a unique structural arrangement which permits the above described die roll interleaving.
  • a common frame member having parallel surfaces on opposite sides thereof. Each surface is formed with grooves or slots which extend radially in equal spaced angular relationship from a common axis passing perpendicularly through the two parallel surfaces.
  • the slots in one surface however are angularly disposed intermediate those in the opposite surface, and the depth of these slots is such that they overlay. However, because the slots in one side are intermediate those in the opposite side, they do not interfere with each other.
  • Mounting blocks are arranged in the various slots and these mounting blocks support die rolls for free rotation with their peripheries adjacent to each other to define first and second apertures as above described.
  • FIG. 1 is a representation of a wire drawing set up incorporating the present invention
  • FIGS. 2 and 3 are end elevational views, respectively, and partially cut away of a drawing head according to the present invention
  • FIG. 4 is a section view taken along line 4-4 of FIG. 2;
  • FIG. 5 is a partially exploded perspective view of a drawing head according to the present invention.
  • FIGS. 6 and 7 are enlarged fragmentary views respectively, of the aperture portions of the drawing head as shown in FIGS. 2 and 3;
  • FIG. 8 is an enlarged view of the wire stock passing through the rolls shown in FIG. 4;
  • FIG. 9 is a section view taken along line 99 of FIG. 8;
  • FIG. 10 is a section view taken along line 1010 of FIG. 8;
  • FIG. 11 is a section view taken along line 1111 of FIG. 8.
  • wire stock 10, to be reduced is taken from a supply coil 12 and is pulled through a draw head 14.
  • the reduced wire, indicated at 10 is taken out from the draw head 14 and is wound up on a take up coil 16 which is rotated by means of a drive motor 18.
  • Suitable means may be provided to restrain the rotation of the supply coil 12 in order that a prescribed degree of draw or back tension may be applied to the wire stock 10 as it enters the draw head 14 so as to facilitate the reducing operation.
  • FIGS. 2-7 show various aspects of the internal configuration of the draw head 14.
  • the central frame 20 of the draw head is formed from a single piece of solid material and has fiat and mutually parallel surfaces forming input and output sides 26 and 28 to which the cover plates 22 and 24 are bolted.
  • a central opening 30 extends centrally through both cover plates and the central frame in a direction perpendicular to the sides 26 and 28.
  • the central frame 20 is formed with three radially extending input side slots 32 (FIG. 2), and three radially extending output side slots 34 (FIG. 3).
  • the slots in each side are equiangularly spaced and, as shown in FIGS. 2 and 3, the slots 32 on the input side 26 are arranged angularly intermediate the slots 34 on the output side 28. All of the slots communicate with the central opening 30; and, as shown in FIG. 4, they each extend well over half way into the central frame 26 so that there is an overlapping within the frame. However, because of the relative angular displacement between those slots in the input side 26 and those in the output side 28% they do not interfere with each other.
  • a bifurcated or U-shaped yoke 36 is located in each of the slots 32 and 34. These yokes are dimensioned to fit closely within their respective slots and to be guided by these slots for radial movement toward and away from the central opening 30.
  • the yokes 36 have legs 38 which extend toward the central opening 30, and these legs are formed with holes 40 near their ends for accommodating axles 42 about which input and output die rolls 44 and 46 can turn.
  • the legs 38 of the yokes 36 are split as at 48 beyond the holes 49 and bolts 50 are provided to span the splits 48 and tighten the holes 40 for securing the axles 42 in place.
  • the die rolls 44 and 46 are provided with internal hearings (not shown) which permit them to turn freely about their respective axles 42.
  • the hub regions of the die rolls are wide enough to extend nearly fully across the space between the yoke legs 38 so as to provide maximum hearing surface and minimum stress. There is however a small clearance 52 between the rolls and the yoke legs for allowing lateral adjustment of the rolls as will be described more fully hereinafter.
  • the die rolls 44 and 46 have tapered sides 54 and beveled edge surfaces 56 near their peripheries on each side thereof.
  • the peripheries themselves are formed with grooves 58 and 66 of arcuate cross section.
  • the radius of curvature of the three arcuately cross sectioned grooves 60 defining the output aperture 64 extends, in each case, precisely to the center of the aperture, so that the shape of the output aperture 64 is essentially circular.
  • FIG. 3 there is provided a radial tension screw 66 for each yoke 36. This tension screw enters through the cylindrical surface of the central frame 20 and threadedly engages the base of the yoke 36. A pair of radial compression screws 68 are threaded into the frame 20 on each side of each tension screw 66 and abut against the back of the yoke 36.
  • the die rolls 44 and 46 are capable of a certain degree of lateral adjustment within the clearance spaces 52 between their hub regions and the associated yoke legs 38.
  • This lateral adjustment is achieved by means of elongated push rods 7! which enter through the cylindrical surface of the frame 20 on each side of each yoke 36 and abut against opposite ends respectively, of the associated die roll axle 42.
  • the push rods 70 have adjustment screws 71 pivotally connected to their outer ends. There adjustment screws are threaded to the frame 20; and by adjusting them their respective push rods will cause the axle 42 to be moved from side to side within the clearance 52.
  • the bolts 50 would be loosened so that the axle 42 can move freely within the holes 40 in the yoke 38. Once the desired adjustment is made, the bolts 50 are then tightened to lock the axle in place.
  • the relative posi tion of the tension and compression screws 56 and 63, and of the push rods 70 for adjusting a given die roll are shown in FIG. 5.
  • FIG. 8 shows in enlarged scale the wire stock as it appears in FIG. 4 during drawing through the two apertures 62 and 64.
  • the wire 10 in passing through each aperture undergoes a gradual transition along its length, first from an unreduced circular cross section 72 to a trilobal cross section 74, and secondly, from the trilobal cross section 74 to a reduced circular cross section 76.
  • the lobal arrangement thus produced permits the use of circular aperture forming die roll grooves which can push the wire stock back to circular shape with little or no tendency for metal to be pushed up in between their own adjacent contact surfaces.
  • the trilobally shaped input aperture 62 varies from a minimum radius (R near the center of each grooved periphery, to a maximum radius (R where the peripheries come together.
  • the radius of the unreduced wire stock at 72 is between the minimum and maximum radii R and R of the input aperture.
  • the input die rolls 44 act to squeeze in only on displaced regions about the circumference of the wire while allowing other regions to bulge slightly with a net reduction in overall cross sectional area.
  • the combination of this inward pressing and outward bulging produces a trilobal intermediate cross sectional configuration shown at 74.
  • This intermediate cross section has a minimum radius (r which coincides with the minimum radius (R of the input aperture 62.
  • the intermediate cross section has a maximum radius (1 however, which is less than the maximum radius (R of the input aperture by a slight amount shown at d.
  • FIG. 7 shows the relationship of the intermediate section 74 of the wire stock to the output aperture 64.
  • the output aperture 64 is of a fixed radius (R out), which is less than the maximum radius (r of the incoming wire stock but is greater than its minimum radius rmin,
  • the various output die rolls 4-6 are arranged such that the centers of their peripheral grooves 6% line up with the points of maximum radius rmax, of the intermediate trilobal cross section 74 while their beveled contact surfaces 56 line up with and are displaced outwardly from the points of minimum radius (r
  • the output die rolls 46 operate to press the wire stock back to a circular configuration with little or no forcing of metal against the adjacent beveled edge surfaces 56, and consequently with no tendency toward pinching of the wire to develop flash or fins.
  • the cross sectional area of the wire stock entering the output rolls 46 can be controlled to a degree such that the output rolls will produce true round wire with no flat regions and with no fins. This is because the input rolls control the minor diameter of the intermediate wire cross section so that in the second stage of reduction the minor diameter regions become bulged out to the contour of the desired final diameter without being forced up between the rolls. Moreover, because of the resistance to drawing produced by the input rolls, there is established a back or reverse tension on the wire as it passes through the output rolls.
  • This back tension has the effect of controlling metal fiow during the second stage of reduction so that the displaced metal, instead of bulging entirely radially outward toward the adjacent edges of the roll peripheries, it is actually caused to flow to a great extent longitudinally along the wire. This, of course, reduces the possibility of flash orfins developing.
  • FIGS. 9, 10 and 11 show the various cross sectional configurations of the wire stock in relationship to each other as a result of passing through the input and output apertures 62 and 64.
  • the wire in passing through the input aperture 62, grows radially in certain directions to form a maximum radius (r which is greater than its original radius; while in other directions, it undergoes a decrease in radius to (r which is less than its original radius.
  • the net change in cross sectional area however is a negative one so that an overall reduction is produced in the input aperture.
  • the wire in passing through the output aperture 64- also grows radially along its regions of minimum radius (r while decreasing along its regions of maximum radius (r as it feturns to circular configuration. Again, the net change in cross sectional area is negative so that a second overall reduction is produced in the output aperture 64.
  • the difference between the diameters in the input and output cross sections 72 and 76 is illustrated in FIG. 11.
  • the nested arrangement of input and output die rolls described above makes possible the successful reduction of solid metal wire with smooth surface characteristics and very circular cross sectional configuration. This is so because the nested arrangement, by bringing the input and output apertures very close together, ensures that the trilobal intermediate cross section 74 will enter the output aperture 64 in perfect alignment with the die rolls.
  • the trilobal cross section were to be even slightlytwisted its points of maximum radius (r would not be aligned with the line of action of the output die rolls 44. As a result, the combined force of these rolls would produce a torque on the wire about its longitudinal axis in the direction of the twist. The increased pressure of the rolls would then produce further twisting of the wire so that its regions of maximum radius (r would become trapped between the adjacent beveled contact surfaces 56 and a fin or flash would develop.
  • a further advantage of the reverse tension effect produced by the input rolls is that it reduces the amount of pull required to pass the wire through the output rolls.
  • the total amount of pull required to draw wire through the two sets of reducing rolls is far less than the sum of the pulls that would be required to a pull a wire separately through two individual sets of similar rolls. Because of this, the amount of draw tension is minimized, and a far greater reduction is obtainable than has heretofore been possible.
  • Wire drawing apparatus comprising: two sets each of a plurality of forming rolls and means rotatably mounting the same on a common frame with the roll axes of each set disposed substantially on a common plane, the axes planes of the two roll sets being spaced apart and substantially parallel, the rolls of each set being equiangularly disposed about a common axis perpendicular to said axes planes, said rolls being peripherally grooved and edge-bevelled, means individual to said rolls for adjustably positioning the same with respect to said common axis for causing the bevelled edges of contiguous rolls of each set to come toward one another whereby the grooved portions of said rolls form about said common axis, a Wire drawing aperture substantially surrounded by said grooved portions, said rolls being so mounted on said frame that the rolls of each set are angularly disposed intermediate those of the other set about said common axis and with the peripheral portions of rolls of each set further disposed respectively in the crotches between contiguous rolls of the other set with the roll
  • said roll sets comprise clusters of three rolls each, and wherein the rolls of one set are grooved to form a substantially triangular wire drawing aperture, and wherein the rolls of the other set are grooved to form a circular wire drawing aperture.
  • said frame comprises a solid metal block having oppositely disposed parallel faces and an opening therebetween about an axis perpendicular to said faces, said block being radially slotted about said axis in each said face and wherein the respective rolls of one set are rotatably mounted on hearing yokes disposed in the respective slots in one face of said frame blocks and wherein the respective rolls of the second set are similarly rotatably mounted on hearing yokes disposed in the respective slots in the opposite face of said frame block, and wherein means are provided individual to said bearing yokes for adjustably positioning the same radially along said slots.
  • bearing yokes are of bifurcated and substantially U-shaped configuration and are disposed in said frame slots respectively with the bifurcated portions thereof directed toward said common axis and wherein said bearing yokes are longitudinally adjustable along said slots by means of tension bolts threaded thereto within said slots and which are rotatably supported by said frame block.
  • each of said die rolls are mounted to rotate about an axle which extends through holes near the ends of the legs formed by the bifurcated U-shaped configuration of the yokes.
  • Apparatus according to claim 7 wherein a pair of compression bolts are threaded through said frame block and abut against each bearing yoke on opposite sides of its tension bolt.
  • Apparatus for drawing solid wire to a reduced size comprising a common housing, said housing being shaped with a central opening extending therethrough, first and second groups of die rolls with grooved peripheries, means within said housing supporting the rolls of each of said groups for free rotation with their axes in a common plane perpendicular to the axis of said central opening so that their peripheries come toward each other to define an aperture aligned with the axis of said central opening, said means within said housing being arranged to support the die rolls in one group in a manner such that they are disposed intermediate to and are nested among the die rolls in the other group so that the distance between the apertures in each group is substantially less than the diameter of said die rolls to permit continuous drawing of wire through said two apertures in succession without appreciable twisting of such wire between said apertures, the peripheral grooves of one set of rolls being configured to define a first, lobal, aperture having successive regions of minimum and maximum radius, and the peripheral grooves of the other set of rolls being configured to define
  • a method for drawing solid wire of circular cross section to a reduced diameter comprising the steps of first passing said wire through a lobally shaped aperture having maximum radii greater than the cross sectional radius of said wire to shape said wire to a lobal cross sectional configuration while effecting a first cross sectional area reduction in the wire, and thereafter passing the wire through a second circularly shaped aperture having a radius between the maximum and minimum radii 3,129,618 4/ 1964 Hergeth 72224 of the lobally configured wire to reshape the wire to a cir- 2,710,433 6/ 1955 Properzi 72224 cular cross sectional configuration while effecting a further 175,522 3/ 1878 Tasker 72224 cross sectional area reduction in the wire.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
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US499186A 1965-10-21 1965-10-21 Method and apparatus for drawing solid wire stock Expired - Lifetime US3380278A (en)

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Application Number Priority Date Filing Date Title
US499186A US3380278A (en) 1965-10-21 1965-10-21 Method and apparatus for drawing solid wire stock
DE19671602247 DE1602247A1 (de) 1965-10-21 1967-05-20 Drahtziehvorrichtung
CH794667A CH459117A (de) 1965-10-21 1967-06-06 Verfahren und Vorrichtung zum Kaltziehen von massivem Draht

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US499186A US3380278A (en) 1965-10-21 1965-10-21 Method and apparatus for drawing solid wire stock
DEC0042399 1967-05-20
CH794667A CH459117A (de) 1965-10-21 1967-06-06 Verfahren und Vorrichtung zum Kaltziehen von massivem Draht

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1814238A1 (de) * 1968-12-12 1970-06-25 Kocks Gmbh Friedrich Kalibrierung fuer Feineisen-,insbesondere fuer Drahtwalzwerke mit Dreiwalzenkalibern
US3677056A (en) * 1969-05-27 1972-07-18 Ilario Properzi Multiple housing rolling mill
US3754425A (en) * 1970-07-17 1973-08-28 Kocks F Rolling mills
FR2192883A1 (de) * 1972-07-24 1974-02-15 Auriol Et Cie Ets
US3952570A (en) * 1973-07-04 1976-04-27 Firma Friedrich Kocks Stretch reducing mills
US3987657A (en) * 1974-07-18 1976-10-26 Giulio Properzi Roll setting device for rolling mills for metal bars or the like
US4191041A (en) * 1977-09-17 1980-03-04 Friedrich Kocks Gmbh & Company Rolling mills
US4229961A (en) * 1979-02-06 1980-10-28 Vydrin Vladimir N Continuous mill
US4244204A (en) * 1977-11-16 1981-01-13 Vydrin Vladimir N Mill stand
US4314470A (en) * 1979-03-15 1982-02-09 Keiichiro Yoshida Roller die wire drawing device having a plurality of roller die units
DE3026933A1 (de) * 1980-07-16 1982-02-11 Beloreckij metallurgičeskij kombinat imeni M.J. Kalinina, Beloreck Geruest mit einem mehrwalzenkaliber
DE3122158A1 (de) * 1981-06-04 1983-01-05 Magnitogorskij Gorno-MetallurgiČeskij institut imeni G.I. Nosova, Magnitogorsk "mehrwalzenkalibergeruest"
US6079243A (en) * 1997-03-31 2000-06-27 Nippon Steel Welding Products & Engineering Co., Ltd. Method of production of welding wire
US6085565A (en) * 1995-11-30 2000-07-11 Daido Steel Co., Ltd. Eight-roller type rolling mill and method of rolling using the mill
US20050015978A1 (en) * 2003-07-21 2005-01-27 Ryan Andersen Method and apparatus for producing stranded aluminum cables

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10569A (en) * 1854-02-28 jackson
US14551A (en) * 1856-04-01 Seamless metal tubes
US175522A (en) * 1876-03-28 Improvement in machines for reducing diameter of metal tubes
US324867A (en) * 1885-08-25 Rolling-mill
US562825A (en) * 1896-06-30 Machinery for manufacturing bicycle-spokes
US1930698A (en) * 1932-01-06 1933-10-17 Ralph C Stiefel Tube-reducing mill
US2710433A (en) * 1948-04-30 1955-06-14 Properzi Hario Continuous metal casting machine
US3129618A (en) * 1961-05-23 1964-04-21 Mannesmann Meer Ag Continuous rolling mill drive

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10569A (en) * 1854-02-28 jackson
US14551A (en) * 1856-04-01 Seamless metal tubes
US175522A (en) * 1876-03-28 Improvement in machines for reducing diameter of metal tubes
US324867A (en) * 1885-08-25 Rolling-mill
US562825A (en) * 1896-06-30 Machinery for manufacturing bicycle-spokes
US1930698A (en) * 1932-01-06 1933-10-17 Ralph C Stiefel Tube-reducing mill
US2710433A (en) * 1948-04-30 1955-06-14 Properzi Hario Continuous metal casting machine
US3129618A (en) * 1961-05-23 1964-04-21 Mannesmann Meer Ag Continuous rolling mill drive

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1814238A1 (de) * 1968-12-12 1970-06-25 Kocks Gmbh Friedrich Kalibrierung fuer Feineisen-,insbesondere fuer Drahtwalzwerke mit Dreiwalzenkalibern
US3677056A (en) * 1969-05-27 1972-07-18 Ilario Properzi Multiple housing rolling mill
US3754425A (en) * 1970-07-17 1973-08-28 Kocks F Rolling mills
FR2192883A1 (de) * 1972-07-24 1974-02-15 Auriol Et Cie Ets
US3952570A (en) * 1973-07-04 1976-04-27 Firma Friedrich Kocks Stretch reducing mills
US3987657A (en) * 1974-07-18 1976-10-26 Giulio Properzi Roll setting device for rolling mills for metal bars or the like
US4191041A (en) * 1977-09-17 1980-03-04 Friedrich Kocks Gmbh & Company Rolling mills
US4244204A (en) * 1977-11-16 1981-01-13 Vydrin Vladimir N Mill stand
US4229961A (en) * 1979-02-06 1980-10-28 Vydrin Vladimir N Continuous mill
US4314470A (en) * 1979-03-15 1982-02-09 Keiichiro Yoshida Roller die wire drawing device having a plurality of roller die units
DE3026933A1 (de) * 1980-07-16 1982-02-11 Beloreckij metallurgičeskij kombinat imeni M.J. Kalinina, Beloreck Geruest mit einem mehrwalzenkaliber
DE3122158A1 (de) * 1981-06-04 1983-01-05 Magnitogorskij Gorno-MetallurgiČeskij institut imeni G.I. Nosova, Magnitogorsk "mehrwalzenkalibergeruest"
US6085565A (en) * 1995-11-30 2000-07-11 Daido Steel Co., Ltd. Eight-roller type rolling mill and method of rolling using the mill
US6079243A (en) * 1997-03-31 2000-06-27 Nippon Steel Welding Products & Engineering Co., Ltd. Method of production of welding wire
US20050015978A1 (en) * 2003-07-21 2005-01-27 Ryan Andersen Method and apparatus for producing stranded aluminum cables

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