US2054819A - Apparatus for tensioned cold rolling in reversible mills - Google Patents

Apparatus for tensioned cold rolling in reversible mills Download PDF

Info

Publication number
US2054819A
US2054819A US724931A US72493134A US2054819A US 2054819 A US2054819 A US 2054819A US 724931 A US724931 A US 724931A US 72493134 A US72493134 A US 72493134A US 2054819 A US2054819 A US 2054819A
Authority
US
United States
Prior art keywords
strip
mill
coiler
rolling
tension
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
US724931A
Other languages
English (en)
Inventor
Edwin B Hudson
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 to US724931A priority Critical patent/US2054819A/en
Priority to US3129A priority patent/US2067192A/en
Priority claimed from GB559637A external-priority patent/GB463939A/en
Priority to FR810130D priority patent/FR810130A/fr
Application granted granted Critical
Publication of US2054819A publication Critical patent/US2054819A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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 plates, strips, bands or sheets of indefinite length
    • B21B1/30Metal-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 plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32Metal-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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/36Metal-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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/40Metal-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 foils which present special problems, e.g. because of thinness
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085Joining ends of material to continuous strip, bar or sheet
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/30Foil or other thin sheet-metal making or treating
    • Y10T29/301Method
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/51Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5124Plural diverse manufacturing apparatus including means for metal shaping or assembling with means to feed work intermittently from one tool station to another

Definitions

  • the general objects of my invention are, to provide rolling apparatus of the reversible mill type capable of rolling thin metalgauge strips in larger quantities than is possible with the type of equipment hitherto in use; to provide a mill and associated apparatus which is economical in first cost and very economical in operating cost; to provide for the rolling of coils of metal which greatly exceed the length.
  • the length of the coils furnished by the hot mill is not determinative of the length of the coils supplied to the cold mill; to provide means to insure the rolling of the greatest amountof strip with the minimum of scrap loss; to provide a way of eliminating unrolled portions .of the strip or strip sheet; to provide means for permitting a greater surface speed of rolling; and to provide a system in which the portions of the strip being rolled may be maintained continuously under a constant gauge reduction, and so as to maintain predetermined constant tension so as to insure.
  • I take the strip sheets produced on the hot mill and weld successive strip sheets end to end until "I have accumulated a' large quantity of stock for rolling.
  • This large quantity of stock usually in the form of a coil of metal say of 25,000 lbs. in weight or more, isthen passed through a reversible mill or series of mills backwardly and forwardly until it is reduced to gauge.
  • I provide means for maintaining in the strip constantly a predetermined tension of constant amount, and I also provide tensioning means and means in thenature of coiling meansat either side of the mill or mills, to take up the strip during rolling as it isfed through the mills.
  • sheet coil 2 may be supported and unwound, the pinch rolls 3 and knee roll 4 serving to decoil and somewhat straighten the metal;
  • the decoiler is operated by a prime mover and suitable drive indicated generally at 5. to a shear 6, where the leading end thereof may The strip next passes be squared to facilitate the formation of a buttweld joint to the trailing end of a preceding strip.
  • a welder is indicated generally at l, which may be of any suitable type, preferably, though not A flash cutter indicated at 8, the purpose of which is to remove from the weld any portions of the Prime mover r I I".
  • smooth drum l9 with. means for will'hereinafter be described, and a flexible outer metal which extend up above the general plane of the surfaces of the strip sheet.
  • Pinch rolls 9 serve either to hold or to pay out the metal.
  • pinch rolls l3 lying beyond the coiler l0, and beyond this a welding device l4, pinch rolls l5, and a flash cutter Hi.
  • a shear may be included, if desired.
  • the flash cutter I6 I have shown a supporting roll I! and a table l8.
  • deflector or guide member 38 the function of which is to guide the end of a strip into the friction coiler.
  • the strip may be view thereof, withv thought of as coming into the coiler from the right in Figure 2.
  • the :sheath member comprising elements 20 and 2
  • the sheath functions to keep thestrip tightly wrapped about the drum, irrespective of the size of the coiler.
  • the next piece of apparatus is a continuous
  • the deflector member 36 l pulling device comprising pinch rolls 29 and 30,
  • the last roll 31 of the continuous pulling device serves also as one of the knee rolls of a static tension applying device.
  • the other knee roll is indicated at 38, and a pull roll 39 is also shown mounted on a bearing member 40 which operates in ways 4
  • the strip indicated at 42 is shown passing, under theknee rolls 31 and 38, and over the pull roll 39, although this particular method of threading is not a limitation upon my invention.
  • the roll 39 is urged upwardlyby the action of a hy-'- draulic cylinder indicated at 43, connected by a conduit 44 to a hydraulic accumulator 45.
  • This accumulator can be loaded in such a way as to cause the pull roll 39 to exert a continuous force upon the strip 42. If, due to sporadic changes in rolling conditions, the strip 42 becomes.shortened or elongated inthat portion of it which extends between the continuous miller and the mill next to be described, the tensionin the strip will nevertheless not change, but the roll 39 will move upwardly or downwg rdl with or against the force of the hydraulic cylinder, to allow for these changes inlength.
  • the movements of the roll 39 occurring in this way are utilized, when they extend beyond a middle zone of no control, to vary the speed of other dynamic instrumentalities in the train either preceding or succeeding it.
  • the device comprising rolls 31, 38, and 39 (which I shall hereinafter refer to as a static tensiorf takeup device) may be caused to control the speed either of the continuous puller hereinabove described, or of the mill hereinafterv to be described.
  • the operation. of the static tension take-up device and the general features which go to make up its corfstruction, are set'forth' more in detail in my co-pending application entitled Rolling under tension, referred to hereinabove.
  • the strip 42 next is carried to a mill shown in working rolls 41.
  • the number of passes will preferably be uneven, since it will be desired to deliver the finished pieces on the side opposite to the side of its entry into the mill.
  • the strip Upon leaving the mill the strip goes through another static tension take-up device comprising appropriate framework, knee rolls 49, and a pull roll 50, preferably actuated in the same way as heretofore described, by a-hydraulic cylinder 5
  • connected by a conduit 52 to an accumulator 53.
  • a tight coiler spindle 59 is shown as connected by the clutch 64 to a shaft 65 which is driven by a motor 66 through suitable gears 61.
  • the first static tension take-up device will be caused to control the speed of the mill motor, and the second static tension take up device will be caused to control the speed of thetight coiler; the speed of the continuous puller shown in Figures 1 and 2 being the fundamental basis for the controlled speeds of the other dynamic instrumentalities in the train.
  • the second static tension take-up device therefore acts to maintain constant tension in spite of sporadic variations in the operation of the final'tight coiler.
  • the power applied to the tight coiler is caused to vary in accordance with the diameter of the coil of metal formed on the tight coiler spindle. I'have shown a coil 68 being wound up on the tight coiler spindle 59 while a coil 69 is being removed from the spindle 60 and coiled upon a spindle mechanism as at 10, to form a package of the metalsuitable for-shipment or storage. It will be understood, of course, that instead of forming a coil as at 10, the reduced strip may be cut apart into sheets by a suitable shear.
  • the next step will be to weld the to the leading end of a new supply of rolling material which, it will be understood, has been accumulated in the meantime upon the reel I2;
  • the continuous puller upon one side of the mill and the tight coiler upon the other side of the mill act to exert tension upon the strip, which tension is of material assistance in rolling.
  • tension I do not primarily refer to such minor amounts of tension as are useful in feeding the mill or mills and in reducing camber. Rather I prefer to use heavy tensions such as facilitate the reduction of the metal by the cold mills.
  • the tension produced by the continuous puller and the tight coiler is maintained at a constant value by the static tension take-up devices, which act continuously to make the tension constant in spite of variations in the length of the strip between the several dynamic instrumentalities, and to control the speeds of these instrumentalities if variations greater than normal or accumulative variations occur. It will be clear that thecontinuous puller and the tight coiler act on succeeding passes respectively as brakes and as pvllers, and vice versa.
  • a decoiler In a rolling apparatus, the combination of a decoiler, a welder, means for accumulating large coils formed by welding, a welder, a coiler, a mill,
  • a decoiler In a rolling apparatus, the combination of a decoiler, a welder, means for accumulating large coils formed by welding, a welder, a coiler, a mill,
  • a coiler in the order named, means intermediate at least said first coiler and said mill for producing tension on the strip being rolled, and means on either side of said mill for maintaining the tension of the strip constantly at predetermined values.
  • a mill and a coiling device adapted to exert tension on the strip.
  • a tension rolling apparatus for metal strip the combination of. a non-tensioning coiler, a continuous puller for exerting tension' on the strip, a mill, a second continuous puller, and a coiler, in the order named.
  • a tension rolling apparatus for metal strip the combination of a non-tensioning coiler, a continuous puller for exerting tension on the strip, a static tension take-up device for maintaining said tension constant in spite of the variations of elongation, a mill for elongating the strip, a second static tension take-up device, and a tight coiler for exerting tension on the strip, in the order named.
  • a tension rolling apparatus the combination of a means for holding a large supply of strip rolling material in coiled form, welding means for joining said supply to the end of a previously rolled supply, a take-up coiler for said supply, a continuous puller for exerting tension thereon, a mill for elongating said supply and a tight coiler for exerting tension thereon, in the order named.
  • said tight coiler comprising interspaced tight coiler spindles, and means for operatively connecting said spindles to a drive alternatively so that one of said spindles may act as a tight coiler, while a rolled supply of material is being removed from said other spindle.
  • a tension rolling apparatus the combination of a decoilerfor coils of strip material, a welder for joining the ends of strips, means for accumulating large coils of strip formed by the welding of strips together, a second welder for joining an end of said large coils to an end of. a supply of strip previously rolled, a coiler acting as an accumulator for a large supply of strip rolling material constituting such large coils, a mill for elongating said supply and a coiler located on the opposite side of said mill, in the order named.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US724931A 1934-05-10 1934-05-10 Apparatus for tensioned cold rolling in reversible mills Expired - Lifetime US2054819A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US724931A US2054819A (en) 1934-05-10 1934-05-10 Apparatus for tensioned cold rolling in reversible mills
US3129A US2067192A (en) 1934-05-10 1935-01-23 Process for tensioned cold rolling in reversible mills
FR810130D FR810130A (fr) 1934-05-10 1936-08-19 Laminoir et procédé de laminage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US724931A US2054819A (en) 1934-05-10 1934-05-10 Apparatus for tensioned cold rolling in reversible mills
US3129A US2067192A (en) 1934-05-10 1935-01-23 Process for tensioned cold rolling in reversible mills
GB559637A GB463939A (en) 1936-08-17 1936-08-17 Improvements in or relating to the rolling of metal strip

Publications (1)

Publication Number Publication Date
US2054819A true US2054819A (en) 1936-09-22

Family

ID=31998555

Family Applications (2)

Application Number Title Priority Date Filing Date
US724931A Expired - Lifetime US2054819A (en) 1934-05-10 1934-05-10 Apparatus for tensioned cold rolling in reversible mills
US3129A Expired - Lifetime US2067192A (en) 1934-05-10 1935-01-23 Process for tensioned cold rolling in reversible mills

Family Applications After (1)

Application Number Title Priority Date Filing Date
US3129A Expired - Lifetime US2067192A (en) 1934-05-10 1935-01-23 Process for tensioned cold rolling in reversible mills

Country Status (2)

Country Link
US (2) US2054819A (fr)
FR (1) FR810130A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691819A (en) * 1951-04-10 1954-10-19 Wheeling Steel Corp Coiling silicon steel strip
US2759301A (en) * 1953-07-16 1956-08-21 Crucible Steel Co America Method and apparatus for surface grinding metal strip
US3182174A (en) * 1961-07-18 1965-05-04 Davy & United Eng Co Ltd Processing of metal
US3212184A (en) * 1960-06-17 1965-10-19 Union Carbide Corp Railroad rail pressure butt welding
US3281917A (en) * 1964-01-08 1966-11-01 United States Steel Corp Method and apparatus for coldrolling strip continuously

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3238756A (en) * 1961-05-03 1966-03-08 Gen Electric Material forming method and apparatus
US3489533A (en) * 1967-03-01 1970-01-13 Fansteel Inc Refractory metal sheet
FR2855991B1 (fr) * 2003-06-12 2005-09-09 Vai Clecim Procede de gestion d'une installation de traitement de bande metallique en ligne continue et installation pour la mise en oeuvre du procede.
US8943868B2 (en) * 2008-02-13 2015-02-03 Nippon Steel & Sumitomo Metal Corporation Method of cold-rolling steel sheet and cold-rolling facility
CN117794681A (zh) * 2023-03-09 2024-03-29 浙江海亮股份有限公司 一种线坯对焊装置及线坯对焊方法

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691819A (en) * 1951-04-10 1954-10-19 Wheeling Steel Corp Coiling silicon steel strip
US2759301A (en) * 1953-07-16 1956-08-21 Crucible Steel Co America Method and apparatus for surface grinding metal strip
US3212184A (en) * 1960-06-17 1965-10-19 Union Carbide Corp Railroad rail pressure butt welding
US3182174A (en) * 1961-07-18 1965-05-04 Davy & United Eng Co Ltd Processing of metal
US3281917A (en) * 1964-01-08 1966-11-01 United States Steel Corp Method and apparatus for coldrolling strip continuously

Also Published As

Publication number Publication date
FR810130A (fr) 1937-03-15
US2067192A (en) 1937-01-12

Similar Documents

Publication Publication Date Title
RU2216416C2 (ru) Установка и способ горячей прокатки плоского проката
US2054819A (en) Apparatus for tensioned cold rolling in reversible mills
US2214618A (en) Continuously operating strip mill
US2169711A (en) Rolling mill adjustment
KR101331173B1 (ko) 슬리팅 라인을 위한 브레이킹 캐리지 장치
BR112012010890A2 (pt) método e equipamento de laminação a frio reversível
JP2017530011A (ja) 金属ストリップを酸洗および圧延するための複合型酸洗−圧延プラント
US2195008A (en) Coiling reel
US3365144A (en) Method of and apparatus for continuously feeding coils of strip-like material to a processing line
US4179913A (en) Metal strip tensioning apparatus for use in continuous strip reduction cold mill and method
US2399155A (en) Means for slitting and re-coiling strip metal
US4086689A (en) Continuous strip reduction cold mill
US5660070A (en) Cold rolling mill with tension bridle
US2105736A (en) Process and mechanism for rolling endless lengths of metal in reversible mills
US3292402A (en) Method and apparatus for rolling flat strip
US3399450A (en) Method and apparatus for joining strip ends
KR101984372B1 (ko) 평탄화가 가능한 리코일러 장치
US6463777B1 (en) Method for the continuous production of a metal strip
US4291562A (en) Three roll tension stand
JPH07185608A (ja) 長い素管を圧延するコールドピルガーミル
US2025002A (en) Method of rolling sheet metals
US2054820A (en) Controlled tension rolling in tandem cold mills
US4680951A (en) Method for dressing hot rolled strip coils, especially coilbox coils
US3084425A (en) Methods for processing strip material
US3761034A (en) Paper feeding device