US3618839A - Continuous steel strip cold-rolling mill apparatus - Google Patents

Continuous steel strip cold-rolling mill apparatus Download PDF

Info

Publication number
US3618839A
US3618839A US882824A US3618839DA US3618839A US 3618839 A US3618839 A US 3618839A US 882824 A US882824 A US 882824A US 3618839D A US3618839D A US 3618839DA US 3618839 A US3618839 A US 3618839A
Authority
US
United States
Prior art keywords
looper
strip
looping
cars
continuous
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
US882824A
Other languages
English (en)
Inventor
Yoshiaki Kawasoko
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Application granted granted Critical
Publication of US3618839A publication Critical patent/US3618839A/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
    • 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
    • B21B1/22—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 plates, strips, bands or sheets of indefinite length
    • B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
    • B21B1/28—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by cold-rolling, e.g. Steckel cold mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work
    • B21B41/10—Loop deflectors
    • 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
    • B21C49/00—Devices for temporarily accumulating material

Definitions

  • This invention relates to a continuous cold-rolling apparatus, and more particularly to apparatus in which the looper is installed in the upper portion of a building above one or more overhead travelling cranes where restriction on space is not severe.
  • Steel strips or plates are generally produced by a hot-rolling step followed by a cold-rolling step.
  • a cold-rolling operation is performed on hot-rolled steel strips after they have been pickled to remove iron oxides on their surfaces.
  • the cold-rolling mill includes five tandem stands.
  • Another object of this invention is to provide an improved looper for use in a continuous steel strip cold-rolling line which is inexpensive and can store a large quantity of steel strip.
  • a cropping shear, a welder, tandem cold-rolling mill uncoilers, coilers, etc. which are normally used in a conventional continuous cold-rolling mill apparatus are installed on the factory floor adjacent a processing line according to the accepted practice.
  • the looper which is installed between the welder and the rolling mill is disposed horizontally in a space of the factory building above the overhead travelling cranes thereof.
  • Suitable guide means are provided to guide vertically the welded continuous strip to the looper from the welder and from the looper to the rolling mill.
  • FIGS. 1, 2 and 3 diagrammatically show three types of typical prior art loopers
  • FIG. 4 shows one example of a confinuous cold-rolling apparatus utilizing a novel looper embodying this invention.
  • FIG. I shows the so-called free-hanging looper which requires a pit having a depth about 18 meters. Such an arrangement requires an expensive foundation and large cost of installation since the pit occupies a large factory area.
  • FIG. 2 shows a modified looper wherein a length of strip is passed around upper and lower rollers R and R which are arranged relatively closely spaced. Although this arrangement is more advantageous than that shown in FIG. I, the cost of the pit is expensive.
  • FIG. 3 shows a tower-type looper. As diagrammatically shown, the height of the looper is considerably higher than the roof of an ordinary factory, often requiring a height of 25 meters. Accordingly, the stroke of overhead cranes C is limited.
  • the invention contemplates the present provision of an improved looper which can eliminate the disadvantages of these prior types of loopers.
  • FIG. 2 diagrammatically illustrating a preferred embodiment of this invention
  • a saddle conveyor 2 adapted to transfer coils l of hot-rolled strips.
  • a hanger 4 operated in the vertical direction by means of an oil pressure cylinder is associated with conveyor 2 to mount coils l on a cradle 5.
  • the coil mounted on the cradle 5 is designated by a reference character 6.
  • a preceding coil 8 is supported by a double mandrel uncoiler 9 to be payed out toward a shear 12 through pinch rollers 11.
  • the shear is provided with suitable side guides 33 and 34 and a scrap box (not shown) to crop the ends of the strip.
  • Cropped strips S are welded together in end-to-end relation by means of a welder 13 to form a long continuous strip which is supplied to the novel looper L.
  • looper L is disposed horizontally in the space of the building above overhead travelling cranes l7 and 18 and comprises looping cars 19, 20, swing rollers 21 and guide rollers 23, 2d and 25.
  • Strip 28 leaving the looper enters into a conventional five stand cold-rolling mill 30.
  • coils l of hot-rolled strips from a hot-rolling mill factory are mounted on the saddle conveyor 2 by means of crane l7 and are then successively mounted on cradle rollers 7 of cradle 5 by means of the hanger 4 of transfer device 3.
  • the line is now treating a strip of coil 8 supported by the uncoiler 9, it being understood that the coil 6 on the cradle 5 is utilized as a succeeding coil to coil 8.
  • the band of the succeeding coil 6 is removed and cradle rollers 7 are driven to bring the leading end of coil 6 to align with a guide table.
  • the cradle rollers 7 are further rotatw to flatten the leading end of the strip by means of a leveller d and the longitudinal axis of the strip S is aligned with the longitudinal axis oi the line by means of side guides.
  • the strip is hung by means of an electromagnet 3i, thus preparing the succeeding coil 6 for the continuous running.
  • the cradle rollers 7 are driven to feed the leading end of the strip into pinch rollers 11. Therefore, by the operation of a piston-cylinder assembly 32 the cradle is moved to the right as viewed in H6. 2 to bring the succeeding coil 6 to come into alignment with the double mandrel uncoiler 9, thus mounting succeeding coil 6 thereon.
  • the welded strip S is advanced to the abovedescribed overhead looper L via guide rollers l4 and 115.
  • the looper L is disposed horizontally in a space of the building above overhead travelling cranes l7 and 18 and the strip S is passed successively around guide roller 23, a roller of a looping car 19, guide roller 24, a roller of another looping car and guide roller and is thus folded in a plurality of parallel horizontal loops.
  • Looping cars 19 and 20 are pulled by a winch 35 through cables W and W to move along rails R and R against the tension of the strip S.
  • FIG. 2 shows a position of the maximum storage of the length of the strip. Movement of the looping cars 19 and 20 toward guide rollers 23, 24 and 25 decreases the length of the stored strip.
  • the length of the strip stored can be varied dependent upon the position oi the looping cars.
  • the strip S is also supported by a plurality oi supporting rollers 22 and swinging rollers 21 which are swung vertically to clear looping cars 19 and 20. From the looper L the strip S is fed downwardly and then horizontally into five stand tandem cold-rolling mill via guide rollers 25, 26, 27 and 28.
  • the strip After cold rolling, the strip is sheared by a flying shear and wrapped around a takeup reel by a belt wrapper as is well known in the
  • the looper required for welding successive strips into a long continuous strip to be subjected to a continuous cold-rolling operation is disposed horizontally in a space oi the factory building above overhead travelling cranes, the cost and space for building deep pits or towers for accommodating pit-type or tower-type loopers can be greatly reduced.
  • the looper since the looper is disposed horizontally in a large space above travelling cranes, a larger quantity or length of the strip can be stored than with previous loopers.
  • the novel looper occupies but little floor space and does not interfere with the running of the travelling cranes.
  • the novel looper permits maximum utilization of the continuous cold-rolling installation.
  • apparatus comprising the continuous line excepting the novel looper may be of any type of conventional design.
  • a continuous steel strip cold-rolling mill comprising:
  • an overhead traveling crane for supplying steel stri s; conveying means receiving straps om ssld travel mg crane and conveying same;
  • welding means receiving said steel strips from said conveying means for welding together said supplied steel strips into a long continuous strip
  • a horizontally oriented looper providing at least two loops, located overhead of said travelling crane, said conveying means and said welding means, said looper comprising:
  • each looping car including a roller
  • guide means to guide said continuous strip vertically from said welding means to said looper and vertically from said looper to said rolling stands.
  • each of said looping cars is mounted on horizontal rails and wherein said biasing means includes a winch coupled to said looping cars to move said looking cars horizontally away from their respective guide rollers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
US882824A 1969-01-08 1969-12-08 Continuous steel strip cold-rolling mill apparatus Expired - Lifetime US3618839A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP144469 1969-01-08

Publications (1)

Publication Number Publication Date
US3618839A true US3618839A (en) 1971-11-09

Family

ID=11501596

Family Applications (1)

Application Number Title Priority Date Filing Date
US882824A Expired - Lifetime US3618839A (en) 1969-01-08 1969-12-08 Continuous steel strip cold-rolling mill apparatus

Country Status (5)

Country Link
US (1) US3618839A (enrdf_load_stackoverflow)
DE (1) DE1960506B2 (enrdf_load_stackoverflow)
FR (1) FR2027897A1 (enrdf_load_stackoverflow)
GB (1) GB1250410A (enrdf_load_stackoverflow)
SU (1) SU364144A3 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700157A (en) * 1970-07-13 1972-10-24 United Eng Foundry Co Apparatus for feeding strip-like material to a processing apparatus
US3727820A (en) * 1972-02-18 1973-04-17 Hunter Eng Co Method and apparatus for continuously processing strip

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2085736A1 (en) * 1991-04-17 1992-10-18 Anatoly I. Starikov Process line for the production of metal strips and transporting means thereto

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700157A (en) * 1970-07-13 1972-10-24 United Eng Foundry Co Apparatus for feeding strip-like material to a processing apparatus
US3727820A (en) * 1972-02-18 1973-04-17 Hunter Eng Co Method and apparatus for continuously processing strip

Also Published As

Publication number Publication date
SU364144A3 (enrdf_load_stackoverflow) 1972-12-25
GB1250410A (enrdf_load_stackoverflow) 1971-10-20
DE1960506B2 (de) 1976-01-15
FR2027897A1 (enrdf_load_stackoverflow) 1970-10-02
DE1960506A1 (de) 1970-11-05

Similar Documents

Publication Publication Date Title
US2658741A (en) Rolling mill for rolling strips or bands and sheets of steel and nonferrous metals
US5924184A (en) Method for the continuous rolling of plate and/or strip and the relative continuous rolling line
US4123011A (en) Coil unwind and wind-up method and apparatus therefor
US1977214A (en) Method and apparatus for hot rolling strip metal
US3918282A (en) Combination pickling-rolling mill
US2392323A (en) Rolling strip metal
US3700157A (en) Apparatus for feeding strip-like material to a processing apparatus
US3645120A (en) Coiling apparatus
US3365144A (en) Method of and apparatus for continuously feeding coils of strip-like material to a processing line
US3618839A (en) Continuous steel strip cold-rolling mill apparatus
GB1079671A (en) Improvements in continuous cold-rolling strip mills
US3721114A (en) Apparatus for continuous cold rolling
US4319474A (en) Rolling method and apparatus
US3304023A (en) Method and apparatus for coiling strip
CN1894052A (zh) 用于轧制轧材的方法和设备
CN221581476U (zh) 在线打捆卸卷装置及带钢生产机组
US2779550A (en) Apparatus for handling strip
JPH0679303A (ja) デスケーリング及び冷間圧延方法及び設備
GB989999A (en) Method and apparatus for flattening metal strip or sheet
US3422654A (en) Rolling mill
US3462094A (en) Apparatus for transferring loosely and tightly formed coils of metallic strip
US4182146A (en) Hot rolling mill
JPH082447B2 (ja) 連続循環圧延装置
US3084425A (en) Methods for processing strip material
CN207138511U (zh) 一种酸轧联合机组