US2194212A - Tension rolling method and apparatus therefor - Google Patents

Tension rolling method and apparatus therefor Download PDF

Info

Publication number
US2194212A
US2194212A US31698A US3169835A US2194212A US 2194212 A US2194212 A US 2194212A US 31698 A US31698 A US 31698A US 3169835 A US3169835 A US 3169835A US 2194212 A US2194212 A US 2194212A
Authority
US
United States
Prior art keywords
strip
mill
feeding
rolls
rolling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US31698A
Other languages
English (en)
Inventor
Sendzimir Tadeusz
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.)
American Rolling Mill Co
Original Assignee
American Rolling Mill Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Rolling Mill Co filed Critical American Rolling Mill Co
Priority claimed from US31697A external-priority patent/US2169711A/en
Application granted granted Critical
Publication of US2194212A publication Critical patent/US2194212A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/48—Tension control; Compression control
    • 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
    • B21B13/14—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories having counter-pressure devices acting on rolls to inhibit deflection of same under load; Back-up rolls
    • B21B13/147—Cluster mills, e.g. Sendzimir mills, Rohn mills, i.e. each work roll being supported by two rolls only arranged symmetrically with respect to the plane passing through the working rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B5/00—Extending closed shapes of metal bands by rolling

Definitions

  • My invention relates to the rolling of metal strips of a wide variation in widths and thickness, in which tension applied to he piece is either part or all of the working force applied thereto.
  • Figure 1 is a diagram in section illustrating my practice.
  • Fig. 2 is a diagram in plan view illustrating the same.
  • Fig. 3 is an elevational view of an apparatus suitable for the practicing of my invention.
  • Fig. 4 is a plan view thereof.
  • Fig. 5 is a plan view more clearly showing the drives for the various mechanisms.
  • FIG. 6 is a sectional view of a planetary arrangement which may be employed in connection with the drives.
  • Fig. '7 is a vertical sectional view of a mill which I prefer to use, the section being taken transversely to the mill in the direction of rolling.
  • Fig. 8 is a vertical sectional view of the same mill taken across the direction of rolling.
  • Figs. 9 and 10 are sectional views of modified forms of mills taken in the direction of rolling.
  • Fig. 11 shows a locking means for adjustment of eccentric on shaft 52.
  • Fig. 12 is a sectional view of an exemplary form of feeding device.
  • Fig. 13 is a plan view thereof.
  • Fig. 14 is a partial transverse section.
  • Fig. 15 illustrates another type of pulling device in semi-diagrammatic elevation.
  • Figs. 16 and 17 are respectively end and front elevations of a controlling and indicating device for roll contour.
  • I roll a metal strip in such a way that the elongation thereof remains constant.
  • I provide a strip reducing 0 and elongating device, such as a mill, and a positive feeding-in device therefor, as well as a positive feed-out device, the two last mentioned devices being positively driven with a ratio of motion corresponding to a predetermined elongation.
  • the operation of the system depends upon the elongating device,-namely, the mill,--adapted to exert transverse pressure on the strip.
  • the elongating device namely, the mill,--adapted to exert transverse pressure on the strip.
  • Such a mill will have both a forward and a back tension exerted upon it through the action of the feeding-in and feeding-out devices. Since these devices operate in a predetermined ratio of motions, to give a de- G sired elongation, the system is operative so long as the mill produces an elongation substantially equivalent to that predetermined.
  • strip for cold rolling as commercially produced, is subject to sporadic variations both as to temper and gauge.
  • gauge variations originally occurring in the starting pieces be not exaggerated in the finished product.
  • An operative situation is attained if gauge variations in the finished piece, considering its thinness, are not substantially more than proportional to gauge variations in the starting piece, considering its thickness. An ideal situation would be approached more close- 1y by the securing of a finished piece in which the gauge variations were less than the proportionalrelationship referred to.
  • My system is self-compensating as respects these factors. If the elongation produced by the mill tends to increase, as by the rolling of a spot or softer temper in the strip, the -ten-- sion between the mill and the feeding-out device will decrease, thus tending to lessen the forces producing elongation. If the elongation produced by the mill tends to decrease, as when a thicker spot of the strip, or a spot of harder temper reaches the mill, the tension will increase, thus tending to increase the elongation. The back tension tends to vary with the forward tension, as will be clear, to complete the compensation aforesaid. The relationships between tension, screw pressures in the mill, and elongation, are known.
  • the devices I and 2 shown as pinch rolls, are intended to represent means which feed a strip without reducing its thickness, the peripheral velocity of which means will equal the linear velocity of the strip being fed by them. If now the devices I and 2 are caused to operate on a strip 3, with the device I having a velocity V, and the device 2 a velocity V1 which is greater than V by a definite percentage and remains so, then the strip passing through the device I must be lengthened by the time it has passed the device 2 by this same percentage, if the strip is to move at all.
  • the pinch roll device I has its speed with relation to the pinch roll device 2 regulated by cone pulleys 5 and 8 on the shafts of said pinch rolls coupled by a belt 9 whichcan be adjusted to vary the speed ratio, as indicated, by the fork II.
  • the device 2 is driven in turn from a cone pulley I which is coupled by a belt III with the cone pulley 8.
  • the cone pulley 8 is in turn driven from the source of power II that drives the working rolls 4.
  • the belt shifter I2 is indicated as a means of adjusting the speed of the exit puller 2.
  • My method is adapted for operating on a succession of flat rolled strips welded end to end, or to operation on a single piece, the advancing rolled end of which is welded to the entering end, making up a continuous band. It is also applicable to a reversing mill, although in such a case the feeding-in and feeding-out devices should be independent of the coilers or accumulating means. I do not know of any coiler in which sufficiently accurate compensation could be made for the increasing and decreasing diameters of the coils, so that definite linear speeds could be maintained.
  • the working rolls 24, 25, are to be driven, and the thrust upon them is transmitted by a pair of idler rolls 26 and 21, two for each working roll, to backing up devices in the form of a series of shafts with rollers upon them generally indicated at 28..
  • the shafts maybe supported on a series of journal members whose outer peripheries are curved eccentrlcally to the journals and seated in similarly curved channels in the frame cross members. By adjustably rocking these Journal members the mill is adjusted as to its pass.
  • I preferably employ a single power source for both pullers and for driving the rolls. This is indicated as a motor 29, in Fig. 5, which is geared to the rolls, as at l3, to drive them in opposite directions. This motor is also directly coupled to the exit pulling device as at B4; and the exit pulling device is thus coupled to the entrance and feeding-out devices, I employ adjustable change gear mechanisms l! and [8, preferably in the form of a differential gear, the planetary elements of which-are controlled by oil-operated motor-generator devices, l5 and I6 respectively.
  • the entrance pulling device need not be so heavily constructed as the exit pulling device, since the function of the former is more to restrain movement of the strip than to impart movement, and since the back tension on the mill is preferably generally less than the forward tension. There should be no slip in either device, and no reduction of thickness of the strip in either device.
  • the drums may be faced with friction material, and geared together if desired.
  • in the particular embodiment shown is that of causing the material to wrap about the surface of the drum 30, and to change its direction for the purpose of the arrangement shown in Fig. 3.
  • Exemplary means are indicated more or less diagrammatically in Fig. 3 as a bell crank 33, and a fluid pressure cylinder 34 for operating it.
  • the strip 3 passes from the feeding-in device, through the mill and through the feeding-out device.
  • a take-up means consisting or a drum 39 mounted on a carriage 40, operating on tracks 4
  • the strip 3 passes around this drum, and the carriage has applied to it a tensional force through a cable 42, by some suitable means not shown. Since the tensioning of the strip as it is being actively worked in the mill is accomplished by the feeding-in and feeding-out devices, it is not necessary'to exert any tension on the strip at either end of the mill beyond these devices, excepting such tension as may be required to take up the strip, or to help to hold it against the frictional driving means of the feeding-in and feeding-out devices.-
  • the differential gearing device is shown in my application, Ser. No. 742,075, filed August 30, 1934, now Patent No. 2,170,732.
  • I have indicated the gearing in general for driving the exit puller as l6, and the gearing for driving the entrance puller as I5.
  • I have shown also in connection with each set of gearing an oil pump and oil motor device for controlling the differential elem'ent. I will now briefly describe these parts.
  • Each differential includes a pinion 43 fixed on the drive shaft, driving a series of planetary pinions 41, which in turn mesh with an internal gear 48, which is loose on the shaft 45, the external teeth of which form part of the drive.
  • the planetary pinions are mounted on the web of a sprocket 49, idle on the shaft of the pinion 45.
  • the gear 48 is held fast or driven by a worm 60, which is, in turn, driven by the oil motor generator transmission.
  • the oil device includes two similar elements, one pumping oil and the other driven by the oil pumped.
  • the pump element is driven from some element of the drive which is convenient.
  • a good form of device is one in which a series of pistons are driven around in a frame having cylinders for the pistons. Whether the pistons move in and out depends on the position of an eccentric ring that can be brought into contact with the piston rods. Devices of this character are known in the art.
  • the worm 59 either holds the gear member stationary, or drives it in one direction or the other. This controls the speed of motion transmission between the drive shaft and the sprocket 49.
  • the shaft 45 as shown in Fig. 5, is the drive shaft from the motor 29, and in the respective planetary gear arrangements the gear 49 is the gear which is coupled, as by a chain drive, to the feeding-in or feeding-out devices.
  • I also preferably provide in my mill means for controlling the effective contour or crown of the rolls.
  • the exemplary mill which I have illustrated is a cluster type of mill, having relatively very small working rolls. These rolls are so small that they must be supported throughout their length for the transmission of the necessarily heavy rolling pressures.
  • I have already indicated how the position of the supporting means may be varied to vary the effective screw down. Since, however, I am using interspaced and relatively small rollers for supporting the secondary rolls of the mill, I can control the spring of the rolls, and through this the contour of the rolling pieces, so asto control the degree of crown, if any, in the rolling piece. I do this by mounting at least one series of the supporting rollers, indicated in Fig.
  • I preferably provide an indicating and controlling means for roll contour, which means is illustrated in Figs. 16 and 17. This means serves not only visually to indicate the contour of the roll, but also to control automatically the several supporting members 50 in accordance with a desired roll contour.
  • I have illustrated a base 58 and an overlying supporting means 59.
  • a resilient piece of metal 60, representative of the roll 24, issupported from the base on spring members 6
  • Other spring members 62 lie between this metal strip and a series of threaded shafts 83, each representative of one of the controlling devices for the supports 50 on the mill.
  • Each of the threaded shafts is surmounted by a hand-wheel 64. At intervals throughout the length of the strip 60, there may be suitable scales 65, so that its contour may be gauged.
  • the contour of the strip 60 may be varied at will by operating the several hand-wheels 64. It is my purpose so to couple up the mill with this indicating device that a change of the contour of the strip 60, as eifected through operation of the hand-wheel 64, will be reflected in a corresponding change in the mill.
  • the long arm bears a con tact element 69.
  • I mount an upright member 1
  • I vary the position of the slidable member 12 in accordance with the actual conditions of the mill by coupling it to the wedge means 54 by some effective drive.
  • I have indicated a flexible thrust drive or Bowden wire connection at 15, and I have shown at 16 in Fig. 7 how this is connected tothe wedge shafts.
  • the power leads to the device of Fig. 16 are shown at 11 and 18.
  • the lead 11 is connected to solenoids 19 and 80 for controlling the contacts 01' relays for forward and reverse circuits to the motors 51, indicated at M and 82.
  • the other ends of the solenoids 19 and 80 are connected respectively by leads 83 and 84 to the contact members 13 and 14.
  • the power lead 18 is connected to the contact member 89.
  • the arm 61 will move upwardly, carrying with it the contact member 69. If the motion is sufficient, member 69 will contact the member 13, and will therefore energize the down" circuit of the appropriate contour motor 51.
  • This motor will then operate, as has previously been explained, to rotate the supporting member 50 so as to depress the roll 24. As this occurs, the motion of the wedges 54 will be transmitted to the sliding member 12 in Fig. 16, through the action of the wire connection 15. Thus the contact 13 will tend to move upwardly; and the operation of the contour motor 51 will continue only until the contact 13 has backed away from the contact 69 and the relay circuit has been broken.
  • the contact 69 is purposely made resilient, so that the bar may be moved to any extent desired.
  • FIGs. 9 and 10 Some other forms of mills in which these same principles may be embodied. Particular description of these mills is not necessary.
  • Figure 9 shows a simpler type of cluster mill, in which each of the working rolls 24 or 25' is directly supported by an opposed pair of the supporting rollers.
  • Figure I0 illustrates a more complex type of cluster mill, in which the working'rolls 24 and 25 are each supported by two supporting rolls which, in turn, are supported by a series of three supporting rolls. These rolls, in turn, are supported by two series of four sets of the supporting rollers.
  • FIGs 12 to 15, inclusive I have illustrated certain forms of pulling devices.
  • the numeral 30 illustrates a feeding drum.
  • the strip is again illustrated at 3.
  • the sheath or device for holding the strip tightly against the drum 36 comprises a series rotation to impart movement to the rings 86.
  • This sheath arrangement is supported at one end in journaling means 89 for the last shaft, which journaling means are attached to a fixed support 90.
  • the other end is similarly provided with journaling means attached to the power tensioning arrangement indicated at 33 and 34, or 31 and 3B in Fig. 3.
  • the ring members 85 tend to become elongated. Great pressure may thus be exerted in holding strip 3 against the drum 30, without at the same time building up frictional resistance to the movement of the strip 3 with the drum 3!].
  • FIG. 15 another type of feeding device, in'which the drum 30, around which the strip 3 passes, is provided with a flexible external sheath M, which is endless, and which passes over rotative sheaths 92 and 93 adjacent the drum W, and a sheath 94 interspaced therefrom, which sheath is mounted both for rotation and for sliding movement.
  • may be tensioned against the drum 3! by pulling outwardly upon the sheath 94 in the direction of the arrow. While great pressure may be exerted upon a drum in this way, the sheath 9
  • the drum 30, as indicated at 95 may be shaped to provide core sections with windings 96 positioned therein so as strongly to magnetize the surface of the drum. This alone has been found suflicient to hold the strip 3 strongly thereto, where the strip 3 is fairly thick. Where the strip 3, however, is relatively thin, there may not be a sufilcient mass of'the metal in the strip to be held to the magnetized drum with sufficient strength for my purpose Where a magnetized feeding device is to be used with thin strip therefore, I prefer to make the sheath member 9
  • That method of rolling metal strips which comprises passing the same between rolls and positively controlling the linear speed of the strip as it enters the rolls and as it leaves the rolls in such a way that the length of the strip leaving the rolls bears a constant relation to the length of the strip entering the rolls.
  • That method of rolling metal strip which comprises pulling on the strip as it passes through a pair of. rolls so as to cause the metal to have a predetermined linear velocity, and feeding the strip to the mill at a predetermined velocity, which is so correlated to the first mentioned ,velocity as to give a constant elongation.
  • a method of rolling metal which comprises feeding metal to a mill at a predetermined linear speed and withdrawing metal from said mill at a predetermined faster linear speed, bearing a fixed relation to said first mentioned speed, and driving said mills at a peripheral speed of the working rolls thereof, which bears a fixed relation to said feeding speeds.
  • a process of reducing metal by tension rolling so as to secure a more uniform gauge which comprises reducing the metal in a mill and as respects said mill, varying the forward and back tensions on the piece at the pass in such a way as to produce a constant elongation of the piece, whereby differences in the gauge and temper of said piece will be compensated for by differences in the forward and back tensions effective in said pass.
  • a feeding-in device having substantially only a feeding function, a mill, and a feeding-out device having substantially no reducing function, said feeding-in and feeding-out devices being positively driven together at a speed ratio determined by desired elongation.
  • a feeding-in device having substantially only a feeding function, a mill, and a feeding-out device having substantially no reducing function, said feedingin and feeding-out devices being positively driven driven together at a speed ratio determined by desired elongation, said mill being driven in a fixed speed ratio to one of said feeding devices.
  • a process of rolling metal which comprises passing said metal through a mill, and maintaining with respect to said mill, tension on the piece as it enters and as it leaves said mill, varying said tensions in accordance with the specific elongation of the material in the mill to give a general elongation which is substantially invariable for any given operation.
  • a movable device in advance of the rolling mechanism adapted to engage the stock in advance of the rolling mechanism so as to control the feed of the stock towards the rolling mechanism, connecting means between said movable device and said rolling mechanism, said connecting means including gears so that the speed of movement of said movable device has a predetermined and fixed ratio relative to the speed of said rolling mechanism, said connecting means being operative to'cause said movable device to move at sufliciently low speed to retard the feed of the stock to the rolling mechanism and to impose tension on the stock in advance of the rolling mechanism, said movable device engaging only a single layer of the stock so that the speed of the feed of the stock towards the rolling mechanism has a normal fixed ratio relative to the speed of the rolling mechanism.
  • a movable device in advance of the rolling mechanism adapted to engage the stock in advance of the rolling mechanism so as to control the feed of the stock towards the rolling mechanism, connecting means between said movable device and said rolling mechanism, said common connecting means including gears so that the speed of movement of said movable device has a predetermined and fixed ratio relative to the speed of said rolling mechanism, said connecting means being operative to cause said movable device to move at sufliciently low speed to retard the feed of the stock to the rolling mechanism and to impose tension on the stock in advance of the rolling mechanism, said movable device engaging only a single layer of stock so that the speed of the feed of the stock towards the rolling mechanism has a normal fixed ratio relative to the speed of the rolling mechanism, said movable device being turnable.
  • movable retarding means located in advance of the rolling mechanism and adapted to engage the stock in advance of the rolling mechanism so as to impose tension upon the stock, said' retarding means being adapted and operative to engage the stock without substantially reducing the TADEUSZ BENDZIMIR.
US31698A 1935-07-16 1935-07-16 Tension rolling method and apparatus therefor Expired - Lifetime US2194212A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31697A US2169711A (en) 1935-07-16 1935-07-16 Rolling mill adjustment
US83534A US2189329A (en) 1935-07-16 1936-06-04 Tension rolling means

Publications (1)

Publication Number Publication Date
US2194212A true US2194212A (en) 1940-03-19

Family

ID=26707525

Family Applications (2)

Application Number Title Priority Date Filing Date
US31698A Expired - Lifetime US2194212A (en) 1935-07-16 1935-07-16 Tension rolling method and apparatus therefor
US83534A Expired - Lifetime US2189329A (en) 1935-07-16 1936-06-04 Tension rolling means

Family Applications After (1)

Application Number Title Priority Date Filing Date
US83534A Expired - Lifetime US2189329A (en) 1935-07-16 1936-06-04 Tension rolling means

Country Status (5)

Country Link
US (2) US2194212A (xx)
DE (1) DE751212C (xx)
FR (1) FR829223A (xx)
GB (2) GB478360A (xx)
NL (1) NL62082C (xx)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642280A (en) * 1945-10-25 1953-06-16 Gustaf L Fisk Apparatus for cold reducing metal bars
US3143009A (en) * 1959-11-26 1964-08-04 Pfeiffer Joachim Process and apparatus for drawing deformable stock
US3478559A (en) * 1966-05-20 1969-11-18 Natalis H Polakowski Flexible strip rolling mill
DE1761432B1 (de) * 1968-05-18 1971-07-29 Roland Offsetmaschf Vorrichtung zum konstanthalten der spannung einer durch eine druckmaschine laufenden werkstoffbahn
US3921425A (en) * 1974-06-13 1975-11-25 Tadeusz Sendzimir Process and apparatus for producing metal sheets of better flatness
US4022040A (en) * 1975-09-25 1977-05-10 T. Sendzimir, Inc. Method of operation and control of crown adjustment system drives on cluster mills
US5179851A (en) * 1990-12-14 1993-01-19 T. Sendzimir, Inc. Crown adjustment control system for cluster mills
EP0529771A1 (en) * 1991-08-23 1993-03-03 T. Sendzimir, Inc. Cluster mill with crown adjustment system
US20160107216A1 (en) * 2013-03-15 2016-04-21 Norbert Umlauf Method and apparatus for straightening metal bands

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB831505A (en) * 1955-11-22 1960-03-30 Sandvikens Jernverks Aktiebolo Backed rolling mill
CH386966A (de) * 1959-06-16 1965-01-31 Skf Svenska Kullagerfab Ab Vielwalzengerüst
FR1489722A (fr) * 1965-08-23 1967-07-28 Loire Atel Forges Procédé et dispositif d'écrouissage et de planage d'une bande de métal
LU72571A1 (xx) * 1975-05-23 1975-10-08
US4289013A (en) * 1979-08-29 1981-09-15 Textron, Inc. Crown control for rolling mill
DE3736683C3 (de) * 1987-10-29 2003-09-11 Froehling Josef Gmbh Mehrrollen-Walzgerüst
GB2406295B (en) * 2003-09-25 2006-09-13 Amanda Dyche Applying colour to impervious surfaces
CN111774422B (zh) * 2020-07-16 2022-05-03 北京首钢冷轧薄板有限公司 降低连轧机停车损失的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1618515A (en) * 1921-05-28 1927-02-22 William C Coryell Metal working
DE437591C (de) * 1924-08-24 1926-11-23 Sandvikens Jernverks Ab Kaltwalzwerk
DE521840C (de) * 1925-05-03 1931-03-27 Engelhardt Achenbach Sel Soehn Verfahren zum Auswalzen von Platten und Blechen
BE348447A (xx) * 1927-06-20
DE519246C (de) * 1927-11-01 1931-02-25 Aluminium Ind Akt Ges Einrichtung zum Walzen von langen Metallbaendern
DE483365C (de) * 1928-02-21 1929-09-28 Aeg Regeleinrichtung fuer Antriebe von Walzwerken
US1940939A (en) * 1928-06-04 1933-12-26 United Eng Foundry Co Metal working
FR686045A (fr) * 1929-06-12 1930-07-21 Engelhardt Achenbach Sel Sohne Procédé de laminage
GB353525A (en) * 1930-01-11 1931-07-27 Cold Metal Process Co Improvements in or relating to rolling metal
DE575179C (de) * 1931-02-13 1933-04-25 Messingwerke Carl Eveking Akt Walzwerk fuer Metallbleche, -baender und -staebe

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2642280A (en) * 1945-10-25 1953-06-16 Gustaf L Fisk Apparatus for cold reducing metal bars
US3143009A (en) * 1959-11-26 1964-08-04 Pfeiffer Joachim Process and apparatus for drawing deformable stock
US3478559A (en) * 1966-05-20 1969-11-18 Natalis H Polakowski Flexible strip rolling mill
DE1761432B1 (de) * 1968-05-18 1971-07-29 Roland Offsetmaschf Vorrichtung zum konstanthalten der spannung einer durch eine druckmaschine laufenden werkstoffbahn
US3921425A (en) * 1974-06-13 1975-11-25 Tadeusz Sendzimir Process and apparatus for producing metal sheets of better flatness
US4022040A (en) * 1975-09-25 1977-05-10 T. Sendzimir, Inc. Method of operation and control of crown adjustment system drives on cluster mills
US5179851A (en) * 1990-12-14 1993-01-19 T. Sendzimir, Inc. Crown adjustment control system for cluster mills
EP0529771A1 (en) * 1991-08-23 1993-03-03 T. Sendzimir, Inc. Cluster mill with crown adjustment system
US5193377A (en) * 1991-08-23 1993-03-16 T. Sendzimir, Inc. Crown adjustment systems on cluster mills
US20160107216A1 (en) * 2013-03-15 2016-04-21 Norbert Umlauf Method and apparatus for straightening metal bands
US9751120B2 (en) * 2013-03-15 2017-09-05 Norbert Umlauf Method and apparatus for straightening metal bands

Also Published As

Publication number Publication date
FR829223A (fr) 1938-06-16
GB478361A (en) 1938-01-17
US2189329A (en) 1940-02-06
NL62082C (xx)
GB478360A (en) 1938-01-17
DE751212C (de) 1953-09-14

Similar Documents

Publication Publication Date Title
US2194212A (en) Tension rolling method and apparatus therefor
US2169711A (en) Rolling mill adjustment
US2432828A (en) Apparatus for stretcher leveling strips
US2095733A (en) Metal rolling
US4244203A (en) Cooperative rolling process and apparatus
US2332796A (en) Reduction of elongated bodies
GB585165A (en) Improvements in or relating to cold processing strip metal
GB969395A (en) Improvements in or relating to the treatment of strip metal
EP0790870B1 (en) Flattening group in levelling machines kept under tension, for metal bands, with operative rollers of increasing diameter
US2072121A (en) Method and apparatus for guiding material
US3527078A (en) Strip flattening
US2333282A (en) Method of and apparatus for straightening strip steel
US2047883A (en) Rolling mill
US2118284A (en) Apparatus for producing sheet material
US2163504A (en) Processing machine
US1923738A (en) Method of and machine for straightening or leveling strip metal
US2275095A (en) Method and means for leveling and hardening thin gauge metals
US2190986A (en) Tempering sheet metal
US2069496A (en) Rolling mill
US2178674A (en) Method and apparatus for drawing strips
US2226948A (en) Method of rolling
US3580033A (en) Rolling mill for producing thin strip stock
US3304023A (en) Method and apparatus for coiling strip
US1964503A (en) Metal rolling machine
US3270543A (en) Machine for flattening and curling of metal strip