EP3131689A1 - Automatic guide adjustment from feedback of rolling parameters - Google Patents
Automatic guide adjustment from feedback of rolling parametersInfo
- Publication number
- EP3131689A1 EP3131689A1 EP15715647.2A EP15715647A EP3131689A1 EP 3131689 A1 EP3131689 A1 EP 3131689A1 EP 15715647 A EP15715647 A EP 15715647A EP 3131689 A1 EP3131689 A1 EP 3131689A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- guide
- mill
- pass line
- respect
- along
- 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.)
- Withdrawn
Links
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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
- B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
- B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/14—Guiding, positioning or aligning work
-
- 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
- B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- 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
- B21B15/0007—Cutting or shearing the product
- B21B2015/0021—Cutting or shearing the product in the rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
- B21B27/024—Rolls for bars, rods, rounds, tubes, wire or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
Definitions
- Embodiments of the present invention relate generally to control systems for rolling mills producing hot rolled long products, e.g., rods, bars and the like, and are concerned in particular with the automatic adjustment of interstand guides based on the feedback of selected rolling parameters.
- embodiments of the present invention address the above described problems by providing a system for monitoring selected rolling parameters indicative of a need to make guide adjustments and for automatically adjusting the guides in response to feedback signals representative of such parameters.
- Fig 1 is a perspective view of the entry side of a roll stand equipped with a rest bar assembly and adjustment mechanism of the type employed with exemplary embodiments of the present invention
- Fig. 2 is a side view of the rest bar assembly depicted in Fig. 1, with the nearmost housing post removed;
- Fig. 3 is a top plan view of the rest bar assembly depicted in Figs. 1 and 2;
- Fig. 4 is a rearview of the rest bar assembly depicted in Figs.1-3;
- Fig. 5 is an enlarged partially sectioned top view of a roller guide useful in one exemplary embodiment of the present invention.
- Figs. 6 and 7 are control diagrams depicting alternative exemplary embodiments of the present invention.
- a rolling mill roll stand 10 is partially depicted as comprising housing posts 12a, 12b and a pair of multi-grooved work rolls 14.
- the roll stand is arranged along the mill pass line PL in series with other roll stands (not shown).
- a roller guide 16 serves to direct a hot rolled product, e.g., a rod or bar, along the mill pass line PL into a roll pass defined by a selected pair of grooves in the work rolls 14.
- An exemplary embodiment of a rest bar assembly 18 is positioned to support the guide 16 in its operative position.
- the rest bar assembly comprises a fixed core 20 extending between and fixed by means of mounting plates 22 to the housing posts 12a, 12b.
- a saddle 24 on which the guide 16 is mounted, is supported by and movable along the core 20 in opposite directions transverse to the mill pass line PL.
- Movement of the saddle 24 is effected by an adjustment mechanism which may comprise a helically cut worm track 26 extending externally along a back side of the core 20.
- a worm gear 28 carried by the saddle is in meshed relationship with the worm track.
- the worm gear 28 is keyed or otherwise fixed to a shaft (not shown) rotatively driven remotely by a drive motor 30. While this adjustment mechanism is preferred, other adjustment mechanisms known to those skilled in the art may be alternatively employed in connection with the present invention.
- the saddle 24 maybe releasably fixed in place on the core 20 by a remotely operable mechanism, one example being the hydraulically actuated clamp 30 depicted in Fig.2.
- the guide 16 comprises a pair of arms 32 mounted for pivotal movement about vertical axes defined by pins 34. Pairs of guide rollers 36, 36 and 38, 38 are carried by the arms 32. The forward ends of the arms 32 are resiliently urged apart by springs 40, thereby
- adjustable stops 42 which include detectors in the form of load sensors 44.
- the pairs of guide rollers 36, 36 and 38, 38 are configured and arranged to contact and deliver a hot rolled product passing therebetween along a delivery path.
- the forces F exerted by the rearward ends of the arms 32 on the stops 42 constitute parameters indicative of the position of the delivery path defined by the guide rollers with respect to the mill pass line. Ideally, the delivery path will be aligned concentrically with the mill pass line PL, resulting in the forces F being equal. An imbalance of the forces F indicates a transverse misalignment of the guide rollers with respect to the mill pass line.
- the guide could be equipped with strain gauges (not shown) to detect any imbalance of forces exerted on the guide, either by misalignment of the product or by an incorrect product size.
- an oval process section "O" is being rolled into a round “R” by the work rolls 14.
- Guide readjustment is effected by a control system comprising a controller 46 arranged to receive and process feedback signals from the load sensors 44 of the guide 16, and to control the operation of the motor 30 and clamp mechanism 31 via control lines 50, 52. If the feedback signals 48 indicate an imbalance of the forces F exerted by the guide arms 32 against the stops 42, the controller 46 first operates via control line 52 to release the clamp mechanism 31 , and then operates via control line 50 and motor 30 to shift the saddle 24 along the core 20 to a position at which the feed back signals 48 indicate that the forces F are equal. The controller then operates via control line 52 and clamp 31 to fix the saddle 24 in its readjusted position on the core 20.
- a dogbone section "DB" is being slit into multiple rounds Ri, R 2 , R 3 by a slitting device 54.
- the rounds Ri, R 2 , R 3 exit the slitting device respectively at velocities Vi, V 2 and V 3 .
- the exit velocities Vi_ 3 comprise parameters which if unequal, are indicative of transverse misalignment of the guide 16.
- Velocity detectors 56 provide the controller46 with feedback signals 58 representative of the velocities Vi-V 3 .
- the controller 46 corrects any velocity imbalance by operating the clamp 31 and motor 30 to readjust the guide in the same manner as described above with respect to the embodiment of Fig. 6.
- the slitting device 54 has been shown as producing three slit rounds Ri, R 2 , R 3 , it is to be understood by those skilled in the art that the number of velocity detectors 56 may be varied to match either a lesser or greater number of slit rounds produced by alternative slitting devices.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/255,123 US20150298187A1 (en) | 2014-04-17 | 2014-04-17 | Automatic guide adjustment from feedback of rolling parameters |
PCT/US2015/024036 WO2015160526A1 (en) | 2014-04-17 | 2015-04-02 | Automatic guide adjustment from feedback of rolling parameters |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3131689A1 true EP3131689A1 (en) | 2017-02-22 |
Family
ID=52823901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15715647.2A Withdrawn EP3131689A1 (en) | 2014-04-17 | 2015-04-02 | Automatic guide adjustment from feedback of rolling parameters |
Country Status (3)
Country | Link |
---|---|
US (1) | US20150298187A1 (en) |
EP (1) | EP3131689A1 (en) |
WO (1) | WO2015160526A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE538558C2 (en) * | 2014-12-18 | 2016-09-20 | Morgårdshammar Ab | A roller guide and a method for guiding stock |
ITUA20164210A1 (en) * | 2016-06-08 | 2017-12-08 | Danieli Off Mecc | GUIDE GROUP OF METAL PRODUCTS AND ITS PROCEDURE |
SE540328C2 (en) * | 2016-10-19 | 2018-06-26 | Morgaardshammar Ab | A guide roller assembly and a roller guide |
CN106734253B (en) * | 2016-11-29 | 2018-04-24 | 宁波大学 | A kind of retaining device of cross wedge rolling milling train easy to adjusting |
US11701694B2 (en) * | 2021-06-11 | 2023-07-18 | Primetals Technologies USA LLC | Automated calibration and realtime communication of data, problems, damage, manipulation, and failure from a network of battery powered smart guide nodes within a rolling mill |
IT202100023606A1 (en) * | 2021-09-14 | 2023-03-14 | Danieli Off Mecc | EQUIPMENT, PLANT AND LAMINATION PROCEDURE |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0615334A (en) * | 1992-06-30 | 1994-01-25 | Kawasaki Steel Corp | Inlet guide device for bar steel mill |
WO2013124833A1 (en) * | 2012-02-24 | 2013-08-29 | Danieli & C. Officine Meccaniche S.P.A. | Method for controlling a two continuous strands rolling plant |
WO2014097177A1 (en) * | 2012-12-18 | 2014-06-26 | Danieli & C. Officine Meccaniche S.P.A. | Rest bar for double or multi-stranded production plant |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1134482A (en) * | 1965-09-03 | 1968-11-27 | Schloemann Ag | Improvements in means for tilting, shifting and straightening rolled stock |
JPS589709A (en) * | 1981-07-10 | 1983-01-20 | Sumitomo Metal Ind Ltd | Control device for guide position in rod mill |
US5174142A (en) * | 1991-08-16 | 1992-12-29 | Pong David T | Method and apparatus for guiding a rod to a slitter station |
-
2014
- 2014-04-17 US US14/255,123 patent/US20150298187A1/en not_active Abandoned
-
2015
- 2015-04-02 WO PCT/US2015/024036 patent/WO2015160526A1/en active Application Filing
- 2015-04-02 EP EP15715647.2A patent/EP3131689A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0615334A (en) * | 1992-06-30 | 1994-01-25 | Kawasaki Steel Corp | Inlet guide device for bar steel mill |
WO2013124833A1 (en) * | 2012-02-24 | 2013-08-29 | Danieli & C. Officine Meccaniche S.P.A. | Method for controlling a two continuous strands rolling plant |
WO2014097177A1 (en) * | 2012-12-18 | 2014-06-26 | Danieli & C. Officine Meccaniche S.P.A. | Rest bar for double or multi-stranded production plant |
Non-Patent Citations (1)
Title |
---|
See also references of WO2015160526A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2015160526A1 (en) | 2015-10-22 |
US20150298187A1 (en) | 2015-10-22 |
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Legal Events
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---|---|---|---|
TPAC | Observations filed by third parties |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AX | Request for extension of the european patent |
Extension state: BA ME |
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DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20180613 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20181024 |