US3747387A - Roll changing arrangement for a rolling mill - Google Patents

Roll changing arrangement for a rolling mill Download PDF

Info

Publication number
US3747387A
US3747387A US00238308A US3747387DA US3747387A US 3747387 A US3747387 A US 3747387A US 00238308 A US00238308 A US 00238308A US 3747387D A US3747387D A US 3747387DA US 3747387 A US3747387 A US 3747387A
Authority
US
United States
Prior art keywords
drive side
mill
chocks
side bearing
tracks
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
US00238308A
Other languages
English (en)
Inventor
C Shumaker
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.)
United Engineering Inc
Original Assignee
Wean United Inc
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 Wean United Inc filed Critical Wean United Inc
Application granted granted Critical
Publication of US3747387A publication Critical patent/US3747387A/en
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP.OF OH
Assigned to PITTSBURGH NATIONAL BANK reassignment PITTSBURGH NATIONAL BANK SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEAN UNITED, INC., A CORP. OH.
Assigned to WEAN UNITED, INC. reassignment WEAN UNITED, INC. RELEASED BY SECURED PARTY (SEE DOCUMENT FOR DETAILS). TO RELEASE SECURTIY DOCUMENT RECORDED AT REEL, FRAME 4792/307 RECORDED FEB. 26, 1987 Assignors: PITTSBURGH NATIONAL BANK
Assigned to UNITED ENGINEERING ROLLING MILLS, INC. reassignment UNITED ENGINEERING ROLLING MILLS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: WEAN INCORPORATED
Assigned to UNITED ENGINEERING, INC. reassignment UNITED ENGINEERING, INC. CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE: 12-19-88 - DE Assignors: UNITED ENGINEERING ROLLING MILLS, INC.
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
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/08—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts
    • B21B31/10—Interchanging rolls, roll mountings, or stand frames, e.g. using C-hooks; Replacing roll chocks on roll shafts by horizontally displacing, i.e. horizontal roll changing
    • 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
    • B21B2013/003—Inactive rolling stands

Definitions

  • ABSTRACT Primary Examiner-Milton S. Mehr AttorneyHenry C. Westin [57] ABSTRACT
  • the disclosure of this invention relates to a rolling mill wherein the chocks of the work roll on the drive side of the mill are split to enable the work rolls to be removed and replaced while strip is still being passed between the rolls.
  • the chocks of the work rolls on the operating side are nested.
  • the work roll chocks are provided with wheels which, during the roll changing operation, are carried by a pair of upper tracks secured to the housings and chocks of the upper backup roll and by a pair of lower tracks carried only by the housings.
  • a lower track runs past the front of the mill to a side shifting unit having tracks which serve as continuations of the lower tracks and which receive the wheels of the chocks of the operating side work roll and the wheels of the chock of the lower drive side work roll as the rolls are brought to and from the mill to transfer them from and to the side shifter.
  • the wheels of the chock of the upper drive side work roll are held apart after the drive side chocks leave the mill by a plunger displaced by a cam and cam track.
  • It provides a work roll chock and supporting arrangement that allows the work rolls to be held and transferred into and out of the mill without interfering with the passing strip.
  • the present invention provides for the drive side chocks of the work rolls to be split and the upper chock to be carried by a first track and the lower chock by a second track, whereas the operating side chocks of the work roll are nested in which the low chock thereof is received in the upper chock, and the operating side lower chock is carried by the second track, whereas the operating side upper chock is carried by both the first and second tracks and in which the upper drive side chock, when this chock passes beyond the tracks, is supported by the lower drive side chock.
  • FIG. 1 is an elevational view of one of the stands of a tandem mill incorporating the features of the present invention
  • FIG. 2 is an elevational view at the operator's side of the window of the mill shown in FIG. I,
  • FIG. 3 is a sectional view taken on line 3-3 of FIG. I illustrating'the drive side windows of the mill shown in FIG. 1,
  • FIG. 4 is a sectional view taken on line 4-4 of FIG. 2, and
  • FIG. 5 is a sectional view taken on line 5-5 of FIG. 2.
  • FIG. 1 there is Illustrated a rolling mill comprising two upright spaced-apart housings l0 and 11, each of which, according to customary designs, is provided with windows 12 and 13 into which are received the bearing chock assemblies of the rolls of the mill.
  • the rolls comprise work rolls 14 and 15, each of which is backed up by backup rolls l6 and 17, respectively.
  • the work roll 14 has bearing chock assemblies 18 and 19, whereas the lower work roll has bearing chock assemblies 22 and 23.
  • the backup rolls have bearing chock assemblies 24.
  • the chocks of the lower backup roll 17 are carried in a roll changing sled 25, the lower surface of which is received in the windows 12 and 13.
  • the chocks 24 of the upper backup roll 16 are adapted to be engaged by screws, not shown, arranged in each housing 10 and 11, FIG. 1 actually showing the chocks 24 of the upper backup roll 16 separated from the screws since this drawing is meant to depict the roll changing position of the work rolls.
  • the sled 25 at the bottom of the mill rests on pistons of piston cylinder assemblies 28 arranged in the lower portion of each housing 10 and II.
  • the work rolls 14 and 15 are adapted to be driven and for which purpose there are provided driving spindles 31 connected to a power source, not shown.
  • a platform 33 and a side shifter 34 At the operator's side of the mill there is provided a platform 33 and a side shifter 34, the functions and descriptions of which will be given later.
  • FIG. 2 depicts the characteristics of the front or operating side chocks of the work rolls l4 and 15 and associated mill elements.
  • the chock 18 of the upper work roll 14 has downwardly extending leg portions 36 that provide an opening 37 for receiving the vertical sides of the lower front work roll chock 22.
  • the adjacent vertical surfaces of these chocks are provided in the usual manner with liners 38.
  • Similar liners are provided between the housing 10 and the outside vertical surfaces of the chock of the upper work roll 14, in which connection it will be noted that the housing is indented by portions 42.
  • Wheels 40 are provided at the lower portions of the chock 22, and, while not seen in FIG. 2, they do appear in FIGS. 1, 4 and 5.
  • the work roll chocks I8 and 22 are equipped with balance cylinder assemblies 43 arranged in the lower chock 22, which are retracted in view of the fact that the drawing depicts the roll changing position of the components.
  • FIG. 3 depicts the back or drive side of the rolling mill
  • the chocks l9 and 23 of the work rolls l4 and 15 are split in counter-distinction to the nested relationship of the work roll chocks I8 and 22 at the operating side of the mill.
  • This split construction allows the chocks l9 and 23 to be axially moved in and out of the. mill without interfering with a strip passing between the rolls I4 and 15.
  • the chock 19 of the upper roll 14 has lined vertical surfaces that engage projecting portions 51 of the housing 11, which portions are protected by liners 52.
  • horizontal extending wheels 53 are provided which engage tracks 54 extending downwardly from the chock 24 of the backup roll 16.
  • the tracks 54 as shown in FIG.
  • FIGS. 1, 4 and 5 the two pairs of wheels 40 and 46 of the front work roll chocks l8 and 22 generally fall in thesame longitudinal plane.
  • the foremost wheels 40 mounted on the work roll chock 22 of the lower roll fall immediately ahead of the wheels 46, which are secured to the leg portions 36 of the chock 18 of the upper work roll 14. Since the upper work roll 14 must move towards the lower roll 15 to set the pass opening of the mill during rolling, the tracks 47 are provided with slots 63 immediately below the operating position of the wheels 46 of the upper work roll chock 18.
  • a pair of wheels 45 at' the top of the chock 18 are spaced to the left of the wheels 46, as one views FIG. 4, and during roll changing are in engagement with the tracks 44.
  • the chock 18 is only supported by the wheels 45, whereas, during the remainder of the time, the chock will be supported by both the wheels 45 and the wheels 46.
  • the two pairs of wheels 58 are spaced apart with reference to the length of the slots 63 in the rails 47 so that, in removing the rolls from the mill, the chock 23 will be supported by the back wheels 58 while the front wheels 58 are passing over the slot 63. The reverse will take place when the rolls are moved into the mill.
  • the chock 19 at the drive side of the work roll 14 its pair of wheels 53, as noted in FIG. 4, is arranged at the veryback of the chock assembly so. that the chock l9can be supported by the track network 44, 54 and 56 during the entire period that the work rolls are moved from the mill.
  • the front chock 24 of the backup roll 16 is provided with an extending portion 65 on which the tracks 44 are formed and which cooperation with the platform is shown in phantom at the left-hand side of FIG. 4.
  • the tracks 44, 54 and 56 only support the drive side upper chock 19 when the roll assemblies are in the mill during roll changing.
  • the chocks l9 and 23 are maintained apart when they are out of the mill at the same spaced distance they assume when in the mill by plungers 68 mounted at the back of the chock 23 for vertical movement on displacement of rollers 69.- As shown in FIG. 5, the plungers and rollers are arranged inward of the tracks 47 so that the rollers do not contact the tracks on axial movement of the rolls l4 and 15.
  • the rollers are designed to contact cam tracks arranged in the vicinity of the platform 33 just ahead of the outermost portion of the extension 65 of the front backup chock 24.
  • the chock 19 has recesses 71 to receive and be supported by the adjacent ends of the plungers 68 when the rollers 69 are caused to rise on contact with the cam tracks 70.
  • FIG. 1 In referring now to FIG. 1 and with reference to the platfrom unit 33, it will be notd that it is provided with a pair of tracks 72 which form continuations of the tracks 47 that service the lower work roll chocks 22 and 23.
  • the platform extends between the mill and the side shifter 34 which is provided with two pairs of sideby-side tracks 73 for supporting a new pair of work roll assemblies to be inserted into the mill and a pair of used work roll assemblies that are retracted from the mill.
  • the tracks of each of these pairs depending on which pair is positioned in front of the mill, will serve as extensions of the tracks 72 of the platform 33.
  • the positioning of the tracks is brought about by a rack 74 and pinion 75 which, through a motor 75a, drives the side shifter 34 over tracks 76 in a direction parallel to the steel line of the mill.
  • the side shifter itself is carried by a carriage 77 supported by wheels and tracks 78 and driven to and from the mill by a motor 79.
  • the carriage 77 also carries the platform 33 in which, when the carriage is positioned in front of the mill, the far end of the platform rests on a pad 80 carried by the housing 10.
  • the lower drive side work roll chock 23 is provided with a hook 81 that is adapted to be engaged by a cooperative hook element 82 connected to a ram 83.
  • the ram is adapted to be driven through the mill by a power means, not shown.
  • the front end of the ram 83 is supported by two pairs of wheels 84 arranged to engage the extension 48 of the tracks 47.
  • the lowering and raising of the backup rolls l7 and 16, respectively, provide an opening between the work rolls and brings them out of engagement with the strip passing through the mill.
  • the raising of the chocks 24 of the backup roll 16 is accomplished by lifting the millscrews and operating the roll balance for the backup roll 16.
  • the actual amount or distance that the upper backup roll 16 is raised is controlled by the consideration that the wheels 46 of the front upper work roll chock 18 must be brought into alignment with the tracks 47 and the stroke of the plungers 68.
  • the registry of the tracks can be accomplished in any number of ways, for example, by a pin operated by a piston cylinder assembly that will position the upper chocks 24 relative to the housings l0 and 11.
  • the balance cylinders for example, the work roll balance cylinders 43 and 59, are retracted so as to avoid their interfering with or contacting the strip as the rolls are moved axially.
  • the carriage 77 Prior to the separation of the work rolls preparatory to roll changing, the carriage 77, which, as noted before, includes the platform 33, is brought to a position in front of the mill and arranged so that an empty pair of tracks 73 is provided in front of the mill to receive the roll assemblies 14 and 15 to be removed from the mill.
  • the rolls are removed by simply operating the ram 83 to cause the pair of rolls 14 and 15 with their chock assemblies to move over their associated tracks onto the platform 33 and eventually onto the side shifter 34.
  • the relationship of the several wheels to the tracks and slots 63 provide that the rolls throughout the entire transport will be supported in a manner that they are held out of contact with the strip passing between them.
  • the procedure is essentially reversed as above described, in which the side shifter 34 will position the new set of rolls in front of the mill to be engaged by the ram 83, the drive side chocks being held apart by plungers similar to the plungers 68 until they pass the cam tracks 70.
  • bearing chocks at the respective ends of said working rolls being arranged to form cooperative pairs of bearing chocks
  • said cooperative pairs of bearing chocks at the drive side being split in a manner that the adjacent surfaces thereof can be spaced from said mill passline during roll changing
  • said cooperative pair of bearing chocks at the operating side being nested in a manner that one of the bearing chocks thereof is received and carried by the other bearing chock, and
  • a rolling mill comprising:
  • bearing chocks at the respective ends of the working rolls being arranged to form cooperative pairs of bearing chocks
  • said member comprises a plunger arranged in the lower of said pair of drive side bearing chocks displaceable vertically towards and away from the upper of said pair of drive side bparing chocks and adapted to engage said upper drive side bearing chock when displaced upwardly, and
  • a rolling mill according to claim 3 in which the first means includes a first pair of tracks arranged to support the bearing chocks of the upper working roll and, in addition, includes a second pair of tracks arranged to support the drive side bearing chock of the upper roll,
  • said member comprising a pair of plungers to engage a different one of the sloped portions, 7
  • said third pair of tracks being arranged to overlap the slope portions in a manner that said uppermost drive side bearing chock is supportable by one or the other of the first and second pairs of tracks by means of said plungers and separate means.
  • first means include a first pair of tracks having supportthe first track means being of a length sufficient to ing surfaces, a second pair of tracks having supporting maintain the drive side bearing chocks spaced from surfaces arranged on the same elevation as the supportthe mill passline while the chocks are moved ing surfaces of the first pair of tracks and including through the mill, sloped portions which are arranged to overlap portions second track means arranged to overlap a portion of of said first pair of tracks, and to assume a supporting the first track means and to be engaged by said relationship with said other means when the uppermost other means in a manner to continue said spaced drive side bearing chock is not being supported by the support for the uppermost drive side bearing chock first means, 10 when passing to and from the mill during roll 10.
  • a rolling mill according to claim 2 in which the changing.
  • first means include first track means, and means in the UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3, 71.17 387 Dated July 2L1. 1973 lnvntofls) Charles Storer Shumaker It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
US00238308A 1971-04-15 1972-03-27 Roll changing arrangement for a rolling mill Expired - Lifetime US3747387A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB952971A GB1376605A (en) 1971-04-15 1971-04-15 Rolling mill with roll change arrangement
US23830872A 1972-03-27 1972-03-27

Publications (1)

Publication Number Publication Date
US3747387A true US3747387A (en) 1973-07-24

Family

ID=26242996

Family Applications (1)

Application Number Title Priority Date Filing Date
US00238308A Expired - Lifetime US3747387A (en) 1971-04-15 1972-03-27 Roll changing arrangement for a rolling mill

Country Status (6)

Country Link
US (1) US3747387A (de)
BE (1) BE782193A (de)
CA (1) CA957530A (de)
DE (1) DE2218192A1 (de)
FR (1) FR2135160B1 (de)
GB (1) GB1376605A (de)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864954A (en) * 1973-12-04 1975-02-11 Blaw Knox Foundry Mill Machine Roll changers
US3877276A (en) * 1973-12-28 1975-04-15 Mesta Machine Co Mill roll changing system including a cantilevered roll assembly
US4627831A (en) * 1984-01-20 1986-12-09 Mitsubishi Jukogyo Kabushiki Kaisha Single facer
US4962657A (en) * 1988-02-22 1990-10-16 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill train, particularly rolling mill train in a section mill
US5150514A (en) * 1990-01-22 1992-09-29 Mitsubishi Jukogyo Kabushiki Kaisha Corrugating roll unit exchanging apparatus for a single facer
US5927127A (en) * 1993-03-27 1999-07-27 Sms Schloemann-Siemag Aktiengesellschaft Reversing compact installation for cold rolling strip-shaped rolling material
US6073474A (en) * 1999-06-24 2000-06-13 Danieli United, A Divison Of Danieli Corporation "C" block roll bending
US6408667B1 (en) * 2000-10-26 2002-06-25 Bethlehem Steel Corporation Four-high mill stand roll change device, a method of retrofit, and a roll change device therefrom
FR2824764A1 (fr) * 2001-05-18 2002-11-22 Vai Clecim Dispositif de demontage des cylindres d'un laminoir
WO2002094514A1 (en) * 2001-05-23 2002-11-28 Cox William A Rotary die module
US20120053039A1 (en) * 2009-05-13 2012-03-01 Giovanni Compagnone Waste stripping unit with simplified tool adjustment in a packaging production machine
CN102581544A (zh) * 2012-03-01 2012-07-18 重庆钢铁(集团)有限责任公司 一种粗轧机机架辊检修工装
US20180290417A1 (en) * 2014-12-04 2018-10-11 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate
US20210008826A1 (en) * 2018-03-30 2021-01-14 Mitsubishi Heavy Industries Machinery Systems, Ltd. Single facer, method for switching corrugated roll unit, and method for exchanging corrugated roll unit
US20220258220A1 (en) * 2019-07-17 2022-08-18 Primetals Technologies Austria GmbH Cold rolling of rolled stock

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55138406U (de) * 1980-04-03 1980-10-02
CN111151988B (zh) * 2019-12-31 2021-04-23 太原重工股份有限公司 抽辊装置及方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638467A (en) * 1968-10-30 1972-02-01 Hitachi Ltd Rolling mill
US3698226A (en) * 1971-07-01 1972-10-17 Blaw Knox Foundry Mill Machine Roll changers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638467A (en) * 1968-10-30 1972-02-01 Hitachi Ltd Rolling mill
US3698226A (en) * 1971-07-01 1972-10-17 Blaw Knox Foundry Mill Machine Roll changers

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3864954A (en) * 1973-12-04 1975-02-11 Blaw Knox Foundry Mill Machine Roll changers
US3877276A (en) * 1973-12-28 1975-04-15 Mesta Machine Co Mill roll changing system including a cantilevered roll assembly
US4627831A (en) * 1984-01-20 1986-12-09 Mitsubishi Jukogyo Kabushiki Kaisha Single facer
US4962657A (en) * 1988-02-22 1990-10-16 Sms Schloemann-Siemag Aktiengesellschaft Rolling mill train, particularly rolling mill train in a section mill
US5150514A (en) * 1990-01-22 1992-09-29 Mitsubishi Jukogyo Kabushiki Kaisha Corrugating roll unit exchanging apparatus for a single facer
US5927127A (en) * 1993-03-27 1999-07-27 Sms Schloemann-Siemag Aktiengesellschaft Reversing compact installation for cold rolling strip-shaped rolling material
US6073474A (en) * 1999-06-24 2000-06-13 Danieli United, A Divison Of Danieli Corporation "C" block roll bending
US6408667B1 (en) * 2000-10-26 2002-06-25 Bethlehem Steel Corporation Four-high mill stand roll change device, a method of retrofit, and a roll change device therefrom
US20040144150A1 (en) * 2001-05-18 2004-07-29 Germain Le Viavant Device for disassembling rolling mill cylinders
FR2824764A1 (fr) * 2001-05-18 2002-11-22 Vai Clecim Dispositif de demontage des cylindres d'un laminoir
WO2002094465A1 (fr) * 2001-05-18 2002-11-28 Vai Clecim Dispositif de demontage des cylindres d'un laminoir
WO2002094514A1 (en) * 2001-05-23 2002-11-28 Cox William A Rotary die module
US7299729B2 (en) 2001-05-23 2007-11-27 Cox William A Rotary die module
US20120053039A1 (en) * 2009-05-13 2012-03-01 Giovanni Compagnone Waste stripping unit with simplified tool adjustment in a packaging production machine
US10245743B2 (en) * 2009-05-13 2019-04-02 Bobst Sa Waste stripping unit with simplified tool adjustment in a packaging production machine
CN102581544A (zh) * 2012-03-01 2012-07-18 重庆钢铁(集团)有限责任公司 一种粗轧机机架辊检修工装
CN102581544B (zh) * 2012-03-01 2013-09-11 重庆钢铁(集团)有限责任公司 一种粗轧机机架辊检修工装
US20180290417A1 (en) * 2014-12-04 2018-10-11 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate
US10696003B2 (en) * 2014-12-04 2020-06-30 Bobst Mex Sa Tool-holder head, transport carriage and methods for mounting and removing a tool for a unit for converting a flat substrate
US20210008826A1 (en) * 2018-03-30 2021-01-14 Mitsubishi Heavy Industries Machinery Systems, Ltd. Single facer, method for switching corrugated roll unit, and method for exchanging corrugated roll unit
US11712867B2 (en) * 2018-03-30 2023-08-01 Mitsubishi Heavy Industries Machinery Systems, Ltd. Single facer, method for switching corrugated roll unit, and method for exchanging corrugated roll unit
US20220258220A1 (en) * 2019-07-17 2022-08-18 Primetals Technologies Austria GmbH Cold rolling of rolled stock
US11975371B2 (en) * 2019-07-17 2024-05-07 Primetals Technologies Austria GmbH Cold rolling of rolled stock

Also Published As

Publication number Publication date
BE782193A (fr) 1972-10-17
DE2218192A1 (de) 1972-10-26
FR2135160A1 (de) 1972-12-15
CA957530A (en) 1974-11-12
GB1376605A (en) 1974-12-11
FR2135160B1 (de) 1974-12-06

Similar Documents

Publication Publication Date Title
US3747387A (en) Roll changing arrangement for a rolling mill
RU2378064C1 (ru) Перевалочная яма и способ смены валков
US3754426A (en) Roll changing arrangement for a rolling mill
US2037210A (en) Roll changing apparatus
US3221530A (en) Rolling mills horizontal-roll change
JPS62156006A (ja) ロ−ルスタンドにおいてロ−ルを高さ方向に移動させるための方法および装置
GB1421629A (en) Apparatus for dismantling and assembling roll assemblies of a rolling mill
US3638468A (en) Roll-changing means for four-high rolling mill
US3491570A (en) Roll changing rig
NO147985B (no) Fremgangsmaate for fremstilling av meta-aryloksybenzaldehyder
US3365174A (en) Rolling mill roll changing apparatus
US3446050A (en) Rolling mills
US3842639A (en) Side-shifting mill roll
US3691809A (en) Mill roll changing arrangement
US3504517A (en) Apparatus for dismounting and remounting the rolls in a four-high rolling mill
US3675456A (en) Roll changing apparatus
US3518862A (en) Installation for exchanging the rollers of a rolling mill
US3451244A (en) Automatic work roll changers
US3738142A (en) Rolling mill
US3866455A (en) Mill roll changing system including a roll buggy
US3540253A (en) Roll changers
US3869898A (en) Roll changing device for a mill or a similar machine
GB1589299A (en) Rolling mill stand
RU2013148C1 (ru) Механизм смены валков клети кварто
US3733869A (en) Bridling attachment for a rolling mill

Legal Events

Date Code Title Description
AS Assignment

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP.OF OH;REEL/FRAME:004458/0765

Effective date: 19850610

AS Assignment

Owner name: PITTSBURGH NATIONAL BANK,PENNSYLVANIA

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

Owner name: PITTSBURGH NATIONAL BANK

Free format text: SECURITY INTEREST;ASSIGNOR:WEAN UNITED, INC., A CORP. OH.;REEL/FRAME:004792/0307

Effective date: 19860630

AS Assignment

Owner name: WEAN UNITED, INC.

Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:PITTSBURGH NATIONAL BANK;REEL/FRAME:004925/0218

Effective date: 19880509

AS Assignment

Owner name: UNITED ENGINEERING ROLLING MILLS, INC.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:WEAN INCORPORATED;REEL/FRAME:004920/0256

Effective date: 19880610

AS Assignment

Owner name: UNITED ENGINEERING, INC.

Free format text: CHANGE OF NAME;ASSIGNOR:UNITED ENGINEERING ROLLING MILLS, INC.;REEL/FRAME:005285/0209

Effective date: 19900425