US3557592A - Apparatus for and method of producing strip metal - Google Patents

Apparatus for and method of producing strip metal Download PDF

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Publication number
US3557592A
US3557592A US774108A US3557592DA US3557592A US 3557592 A US3557592 A US 3557592A US 774108 A US774108 A US 774108A US 3557592D A US3557592D A US 3557592DA US 3557592 A US3557592 A US 3557592A
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United States
Prior art keywords
strip
edge
elongation
waves
wave
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Expired - Lifetime
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US774108A
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English (en)
Inventor
Edwin A Corns
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.)
LEE WILSON ENGINEERING Co Inc
WILSON ENG CO L
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WILSON ENG CO L
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • 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
    • B21C47/00—Winding-up, coiling or winding-off metal wire, metal band or other flexible metal material characterised by features relevant to metal processing only
    • B21C47/26—Special arrangements with regard to simultaneous or subsequent treatment of the material
    • 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
    • Y10T428/12333—Helical or with helical component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/1241—Nonplanar uniform thickness or nonlinear uniform diameter [e.g., L-shape]

Definitions

  • the metal of the projections is not elongated during formation by a percentage amount greater than the percentage elongation which will be irnparted to the strip in a temper pass following annealing or other heat treatment of the strip in an open coil.
  • This invention relates particularly to the annealing or other processing of low carbon steel strip in which the strip is wound into an open coil with-the laps thereof spaced apart.
  • the open coil is heated by --passing a suitable heated atmosphere through the coil,
  • the desired results may ordinarily be obtained by a temi per pass elongation of from about 1/2% to about 1%%.
  • various procedures have been proposed and used including recoiling tight coils of strip as they come from the rolling mill with a string or cord wound in between the laps to space same apart. The string is then removed so that an open coil is formed having free passages between the laps.
  • Such a method, andilapparatus ⁇ for carrying itmout, are disclosed in the Wilson, and .CornsPat No. V3,114,539 datedDec. 17,
  • the contour of these bulges is such that during the formation thereof no part will have been elongated more than the elongation of from about 1/2% to about 1% which will be imparted to the annealed strip during the temper rolling pass which follows the annealing operation.
  • FIG. 1 is an enlarged illustrative fragmentary edge view of several laps of an open coil formed from strip which has projections in the form of edge waves in accordance with this invention.
  • FIG, 2 is an enlarged perspective view of a portion of the edge of the strip of FIG. 1 illustrating one of the edge waves.
  • FIG. 3 is a View of a strip edge showing an edge wave adapted to space the laps of an open coil apart by approximately twice the thickness of the strip.
  • FIG. 4 is a view similar to FIG. 3 but illustrating an edge wave on the strip which is adapted to space the laps of an open coil apart by a distance equal to about the thickness of the strip.
  • FIG. 5 is a side elevation of an apparatus adapted to edge wave one edge of a moving strip in accordance with this invention.
  • FIG. 6 is a cross-sectional view, taken substantially on line 6-6 of FIG. 5, illustrating the disposition of the wave forming bars and their coaction with the adjacent slotted backing roll.
  • FIG. 7 is a side elevational view of the upper part of a wave forming apparatus similar to that shown in FIGS. 5 and 6 but including means for driving the rolls.
  • FIG. 1 A fragmentary edge view of a portion of an open coil of strip, at one edge of which projections or bulges in the form of waves have been impressed according to this invention, is illustrated in FIG. 1 on a considerably enlarged scale.
  • the inner lap 1 has waves 2 and 3 extending outwardly at the edge thereof, the next lap 4 has waves 5 and 6 formed in its edge and the outer lap 7 has similarly formed Waves 8 and 9.
  • the waves are uniformly spaced along the edge of the strip and are circumferentially olf-set from the adjacent waves of the adjoining laps due to the change in coil diameter which occurs with each added lap of the coil. It is to be understood that in some cases it may be desirable, or necessary to prevent nesting of the waves of successive laps, to space the waves irregularly at nonuniform distances along the edge of the strip. As will be later described, this may readily be effected by suitable adjustment or modification of the apparatus disclosed herein for forming the waves.
  • FIG. 2 illustrates in perspective a wave W formed on the edge of a strip in accordance with this invention.
  • the chord or span of the wave is indicated at A and the perpendicular height from the surface of the strip from which it extends is indicated at B.
  • the transverse depth of the wave from the strip edge to the point where it merges smoothly into the plane of the strip is indicated at C.
  • the contour of the projections be such that during their formation from the at strip no part thereof will have been stretched or elongated more than the elongation which will be imparted to the strip during the temper rolling pass after annealing.
  • the depth C of the wave W in FIG. 2 is shown as being substantially equal to the chord A and the wave tapers lineally from the strip edge until it merges smoothly with the plane of the strip.
  • the elongation of the metal which occurs is substantially entirely in the direction of the length of the strip and there is practically no elongation transversely of the strip.
  • the strip is temper rolled after annealing the elongation is practically all lengthwise of the strip and little or no transverse elongation occurs. Accordingly, by limiting the wave forming elongation to the lengthwise direction of the strip it is assured that the subsequent temper rolling mill eliminate all signs of the waves. It will be understood, however, that the exact dimensions and form of the lap spacing projections may be varied considerably so long as there is no sharp bending or excessive elongation of the metal of the strip.
  • the temper pass elongation ranges from between about and about 1%%. Greater elongation than about 1-%% is not necessary to eliminate the yield point and provide the desired temper and degree of flatness in the strip while less elongation than about 1/2 will not eliminate the yield point and produce the desired strip flatness and temper. Therefore, in order that the waves W in the strip S (FIG.
  • the maximum longitudinal elongation given to the wave W during its formation be less than 1%%, i.e. preferably not more than about 11/2%.
  • FIG. 3 illustrates on an enlarged scale (about 4 times in the original patent drawings) a wave, formed in the edge of .036" thick (20 gage) strip, which has a vertical height or offset of twice the strip thickness or .072".
  • a wave formed in the edge of .036" thick (20 gage) strip, which has a vertical height or offset of twice the strip thickness or .072".
  • Such an edge waved strip S when wound into an open coil, would have a lap spacing of approximately twice the strip thickness.
  • This wave has a chord or span of approximately 1" and it is apparent 'that the chord is about 14 times the height (.072") of the wave.
  • a wave type projection W' adapted to provide a lap spacing substantially equal to the thickness of the strip S', is illustrated in FIG. 4. As in FIG. 3 this wave is formed at the edge of a section of gage strip .036 in thickness.
  • the wave W has a chord or span of 1 (the drawing being enlarged approximately four to one in the original patent drawings) and the height of the wave W (the dimension indicated at B in FIG. 2) is approximately the same as the strip thickness .036.
  • the contour of the waves will be varied so that their height B is equal to the desired lap spacing, care being taken however to so proportion the span A, height B and the other dimensions of the waves so that no part thereof will be elongated in any direction to a degree substantially more than that which will be given the strip in the same direction during the temper rolling operation.
  • FIGS. 5 and 6 illustrate a wave forming apparatus which may be so located and through which the strip may be passed as it travels from the tight coil turntable to the open coil turntable.
  • the wave former includes a frame structure F suitably mounted and including a base plate 16, four corner supporting posts 17, 18, 19 and 20 and a top plate 21.
  • the backing roll R is rotatably -supported on suitable bearings on a shaft 22 for free rotation thereon. The ends of shaft 22 are mounted in the bottom and top plates 16 and 21.
  • the roll R includes a center steel tubular member 23 on which is mounted a sleeve 24 of resilient rubber or rubber-like material such as neoprene and the sleeve 24 is provided with a series of axially spaced grooves 25 formed adjacent its upper end.
  • the wave forming or crimping roll R is rotatably sup- -ported on suitable bearings on a shaft 26 which extends parallel to shaft 22 and is mounted in blocks 16 and 21 -which are supported on the bottom and top plates 16 and 21 respectively. These blocks are preferably adjustable laterally by adjusting screws 22 and 22" to permit variation of the spacing between the shafts 22 and 26.
  • the waving roll R is mounted for selective vertical positioning on shaft 26, as by collars 26 and 26" adjustably secured by suitable means such as set screws 26a and 26b and consists of a rubber or rubber-like covered cylindrical body section 27 supported adjacent the resilient face and slotted portions of sleeve 24 of backing roll R.
  • Rigidly mounted in the upper end face of the waving roll R for rotation therewith are a plurality of axially extending and axially inclined waving rods P. As seen in FIG. 6 these rods are circumferentially spaced around the end of the roll R' and extend upwardly and outwardly therefrom. The spacing of the rods from each other is equal to the desired spacing between the waves which are to be formed on the edge of the strip.
  • the circumferential rod spacing is uniform but they may be mounted in an irregular or random spacing to give a corresponding irregular spacing of the waves on the strip to prevent any possibility of nesting thereof during open coiling.
  • one of the rods P is shown with its center line lying in a plane extending between the center lines of shafts 22 and 26.
  • the roll R has been vertically adjusted so that the rods P enter one of the grooves 25 in the face of the backing roll R as the rolls rotate.
  • the strip as it passes between the tight and open coil turntables is led between rolls R and R', the strip being vertically positioned as by engagement of its bottom edge in the surface 16 of base plate 16 so that its upper edge is aligned with and overlies one of the slots 25 in the roll R.
  • By providing a series of these slots 25 strips of different widths may readily be processed.
  • As the strip is wound onto the open coil turntable it is drawn from the tight coil turntable and through the rolls R and R.
  • the frictional engagement of the resilient coverings thereon with the strip surfaces causes these rolls to rotate so that, as the strip passes therebetween the Wave forming rods P successively engage the edge of the strip and bend it into the adjacent groove 25 to form the desired wave shaped projections at the strip edge. Because of the form and inclined mounting of the rods P the metal of the strip is stretched practically entirely in the lengthwise direction of the strip, without appreciable transverse elangation, during the formation of the Waves.
  • the rods P are preferably round in cross-section and of such diameter that the proper wave span, height and depth will be formed. These dimensions of the waves may be regulated by varying the angle of inclination of the rods relative to the axis of roll R', the rod diameter, and/or their positions relative to the strip edge. It will be understood that, because of the resilient nature of the covering 24 of the backing roll R, the waves are formed in the strip edge without objectionable surface marking thereof.
  • FIG. 7 shows the upper portion of a wave forming mechanism generally similar to that shown in FIGS. 5 and 6.
  • the roll shafts 22a and 26C have suitable bearings on the base plate 16 (not seen) and on upper plate 21, the bearings on the upper plate being indicated at 30 and 31 respectively.
  • the shafts 22a and 26C correspond to shafts 22 and 26 of FIGS. 5 and 6.
  • these rolls are keyed or otherwise secured to the shafts 22a and 26a for rotation therewith.
  • the upper ends of shafts 22a,4 and 26e extend through the top plate 21 and have -meshing gears 32 and 33 keyed thereto.
  • Rotatably supported on the top plate 21 in a suitable bearing 34 is a drive gear 35.
  • a motor mounting plate 36 is supported on the upper ends of extensions 19a and 20a of the corner supporting posts 19 and 20 (corresponding extensions of the front post 17 and 18 being omitted in FIG. 7 to permit viewing of the driving mechanism).
  • Drive gear 35 is mounted on the vertical drive shaft 37 which extends upwardly through plate 36 into angle gear box 38 the horizontal shaft 39 of which is coupled to the drive motor 40.
  • Suitable variable speed control means (not shown) are provided for regulating the speed of operation of motor 40 Vand thus controlling speed of rotation of the rolls R and R.
  • the engagement of the gears 32, 33 and 35 insures positive driving of the waving and the backing rolls at the desired speed and it will be understood however that, if it is desired to drive only the Waving roll R', the gear 32 may be omitted.
  • properly contoured waves may be formed in the upper edge of a strip during the open coil forming operation at a high lineal strip speed, without appreciable transverse elongation of the metal of the waves, and with accuracy and uniformity.
  • the method which includes the steps of forming similar bulges adjacent one edge of a length of strip in lineally spaced relation to each other, the bulges each extending a predetermined height perpendicularly from the plane of the surface of the strip from which they extend and being contoured so that no part of the bulge is given an elongation, as compared to the original length of the elongated portion, in an amount greater than the elongation to be given to the strip in a subsequent rolling operation, the bulges being lineally spaced apart a distance greater than the chord of the bulges, the vertical height of the bulges being not less than the strip thickness and not more than about three times the strip thickness, and the maximum transverse depth of each bulge being not substantially greater than its chord, and forming the strip with the bulges formed thereon into an open coil.
  • Apparatus for forming spaced edge waves along the edge of a metal strip comprising a backing roll having a circumferential groove therein, a waving roll having an axially extending and inclined wave forming rod having its outer end projecting radially outwardly beyond the surface of said waving roll, means for rotatably supporting said backing and waving rolls with their axes parallel and disposed on opposite sides of a strip passing therebetween, said waving roll and wave forming rod being axially positioned relative to said backing roll so that said outer end of said rod extends into said groove when said rolls are rotated.
  • Apparatus for forming spaced edge Waves along the edge of a metal strip as defined in claim 7 including means for supporting and guiding a metal strip between said rolls with one edge aligned with and overlying said groove in said backing roll.
  • Apparatus for forming spaced edge Waves along the edge of a metal strip as deiined in claim 7 which includes a plurality of said wave forming rods rigidly supported and circumferential-ly spaced around said waving roll.
  • Apparatus for forming spaced edge Waves along the edge of a metal strip as dened in claim 7 in which said backing roll has a plurality of axially spaced circumferential grooves in its resilient material surface and said waving roll is axially adjustable whereby the outer ends of said wave forming rods may be selectively positioned to extend the desired distance into any one of said grooves.
  • Apparatus for forming spaced edge waves along the edge of a metal strip as dened in claim 7 which includes means for driving one or both of the said waving and backing rolls.
  • An elongated metal strip having a pluralityof similar waves lineally spaced along one edge thereof a distance greater than the chord of a wave, said waves having their maximum height at the strip edge and tapering lineally from the strip edge transversely of the strip

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Winding Of Webs (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
US774108A 1968-11-07 1968-11-07 Apparatus for and method of producing strip metal Expired - Lifetime US3557592A (en)

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US77410868A 1968-11-07 1968-11-07

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US3557592A true US3557592A (en) 1971-01-26

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US (1) US3557592A (fr)
JP (1) JPS4841826B1 (fr)
BE (1) BE740535A (fr)
DE (1) DE1949394C3 (fr)
FR (1) FR2022804A1 (fr)
GB (1) GB1256578A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102170A (en) * 1975-06-04 1978-07-25 Iog Industrie-Ofenbau Gmbh Method for making a spiral coil having spaced turns
US4160371A (en) * 1975-06-04 1979-07-10 Iog Industrie-Ofenbau Gmbh Apparatus for making a spiral coil having spaced turns
US4467632A (en) * 1982-04-05 1984-08-28 General Electric Company Method of making a wound core for an electric transformer
US4570141A (en) * 1982-04-05 1986-02-11 General Electric Company Wound core for an electric transformer
US4886711A (en) * 1987-11-27 1989-12-12 General Motors Corporation Catalytic converter metal monolithic catalyst substrate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914522B2 (ja) * 1979-05-24 1984-04-05 新日本製鐵株式会社 鋼帯コイルのボツクス焼鈍方法
JPS60127072A (ja) * 1983-12-14 1985-07-06 Chiyoda Seiki:Kk 円切断用ガス切断機

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4102170A (en) * 1975-06-04 1978-07-25 Iog Industrie-Ofenbau Gmbh Method for making a spiral coil having spaced turns
US4160371A (en) * 1975-06-04 1979-07-10 Iog Industrie-Ofenbau Gmbh Apparatus for making a spiral coil having spaced turns
US4467632A (en) * 1982-04-05 1984-08-28 General Electric Company Method of making a wound core for an electric transformer
US4570141A (en) * 1982-04-05 1986-02-11 General Electric Company Wound core for an electric transformer
US4886711A (en) * 1987-11-27 1989-12-12 General Motors Corporation Catalytic converter metal monolithic catalyst substrate

Also Published As

Publication number Publication date
DE1949394A1 (de) 1970-05-27
DE1949394B2 (de) 1974-11-07
FR2022804A1 (fr) 1970-08-07
GB1256578A (fr) 1971-12-08
BE740535A (fr) 1970-04-20
JPS4841826B1 (fr) 1973-12-08
DE1949394C3 (de) 1975-06-19

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