US2054819A - Apparatus for tensioned cold rolling in reversible mills - Google Patents
Apparatus for tensioned cold rolling in reversible mills Download PDFInfo
- 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
Links
- 230000002441 reversible effect Effects 0.000 title description 11
- 238000005097 cold rolling Methods 0.000 title description 3
- 238000005096 rolling process Methods 0.000 description 38
- 239000002184 metal Substances 0.000 description 20
- 230000003068 static effect Effects 0.000 description 15
- 239000000463 material Substances 0.000 description 14
- 238000003466 welding Methods 0.000 description 8
- 230000007246 mechanism Effects 0.000 description 6
- 238000005304 joining Methods 0.000 description 4
- 210000003127 knee Anatomy 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
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
- B21B1/30—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 non-continuous process
- B21B1/32—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/36—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 non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
-
- 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
- B21B1/40—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 foils which present special problems, e.g. because of thinness
-
- 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
- B21B15/0085—Joining ends of material to continuous strip, bar or sheet
-
- 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
- Y10T29/00—Metal working
- Y10T29/30—Foil or other thin sheet-metal making or treating
- Y10T29/301—Method
-
- 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
- Y10T29/00—Metal working
- Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
- Y10T29/5124—Plural 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)
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)
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)
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 |
-
1934
- 1934-05-10 US US724931A patent/US2054819A/en not_active Expired - Lifetime
-
1935
- 1935-01-23 US US3129A patent/US2067192A/en not_active Expired - Lifetime
-
1936
- 1936-08-19 FR FR810130D patent/FR810130A/fr not_active Expired
Cited By (5)
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 |
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