US3583194A - Horizontal roll stand for slab mill - Google Patents

Horizontal roll stand for slab mill Download PDF

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Publication number
US3583194A
US3583194A US714564A US3583194DA US3583194A US 3583194 A US3583194 A US 3583194A US 714564 A US714564 A US 714564A US 3583194D A US3583194D A US 3583194DA US 3583194 A US3583194 A US 3583194A
Authority
US
United States
Prior art keywords
chock
chocks
housing
rolls
sled
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
US714564A
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English (en)
Inventor
Francis K Qualey
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 States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Application granted granted Critical
Publication of US3583194A publication Critical patent/US3583194A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B21B31/106—Vertical displacement of rolls or roll chocks during horizontal roll changing
    • 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
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/203—Balancing rolls

Definitions

  • a horizontal roll stand particularly for use with UuS- edge -oiling stands in a continuous casting operation Stand 72/245 includes a housing which has upper and lower roll chocks and [51] Int. Cl B2lb 31/08, 11 Upper chock is suspended by a balancing mechanism; 1321b 3 lower chock supported by hydraulic means.
  • my roll stand is particularly useful for reducing steel slabs formed in a continuous-casting operation.
  • vertical or edgerolling stands commonly are placed between two horizontal stands of my invention.
  • the horizontal and vertical stands cooperate to reduce the total cross section of a slab quite drastically in one closely coupled operation with the slab under tension and while it remains at a sufficiently high temperature for hot rolling.
  • a rolling mill of this type it is frequently necessary to change rolls.
  • One difficulty with previous horizontal roll stands has been that changing rolls takes too long, and necessitates stopping the whole operation with a resulting loss of production.
  • An object of my invention is to provide an improved horizontal roll stand, the rolls of which can be taken out and replaced by remote control during the brief intervals after a slab has been rolled before the next arrives without interrupting the normal tempo of operation.
  • a further object is to provide an improved horizontal roll stand in which the top and bottom work rolls and their chocks can be handled as a unit entirely by remote control when the rolls are changed.
  • FIG. 1 is a side elevational view of a roll stand constructed in accordance with my invention showing the rolls positioned for rolling;
  • FIG. 2 is a vertical section on a larger scale on line 11-11 of FIG. 1 omitting the bearing chock;
  • FIG. 3 is a view similar to FIG. 1, but showing the rolls positioned for removal or installation.
  • the roll stand of my invention includes a pair of spacedapart opposed housings (only one shown), upper and lower bearing chocks 12 and 13 mounted in the housing for vertical movement, and upper and lower power-driven work rolls l4 and 15 journaled at one end in the respective chocks. Since the structure is similar at both sides of the stand, I show only one side. As FIGS. 1 and 2 show, when the stand is set up for rolling a slab S, the upper roll 14 and its chock 12 are suspended from a balancing mechanism 16, hereinafter described. The top of the upper chock 12 carries a rocker plate 17 which abuts a shim 18 at the top of the housing window.
  • the floor of the housing carries an upstanding hydraulic cylinder 21 which contains a vertically movable plunger 22.
  • the lower chock l3 rests on this plunger to support the lower roll 15.
  • the hydraulic circuit for operating the plunger 22 preferably is arranged as shown in my earlier US. Pat. No. 3,280,610. This circuit enables the cylinders at both sides of the roll stand to apply equalized pressure through the lower roll to the slab, and it embodies a dump valve which releases the pressure automatically in the event of an overload and thus prevents damage to the parts.
  • the outer face of the carries carries four horizontally slidable clamps 23 engageable with the ends of the chocks 12 and 13, and respective doubleacting fluid pressure cylinders 24 for moving the clamps back and forth.
  • the floor of the housing carries transverse tracks 25 which extend the width of the roll stand and outwardly therefrom.
  • a conventional sled 26 has wheels 27 which ride on these tracks.
  • the balancing mechanism 16 includes a hydraulic cylinder 30 mounted on brackets 31, which are fixed to the housing 10 and project outwardly and upwardly therefrom.
  • the cylinder wall carries diametrically opposed trunnions 32 which are received in recesses in the brackets.
  • the cylinder contains a reciprocable piston and piston rod 33, the lower end of which carries a clevis 34.
  • a lifting beam 35 is pivoted to the clevis.
  • the lifting beam is a frame rectangular in plan, the side members of which extend downwardly to provide ledges 36.
  • the upper edges of the upper chock have shoulders 37 which rest on rocker plates 38 fixed to these ledges.
  • the lower chock 13 carries a pair of tapered pins 39 upstanding from its upper face and permanently fixed thereto.
  • the upper chock has a pair of sockets 40 in its lower face adapted to receive the pins 39 when the two chocks are brought into face-to-face engagement. As long as the roll stand is set up for rolling, the pins are spaced below the sockets.
  • the sled 26 receives the chocks and rolls with the ledges 36 still clearing the shoulders 37 and the plunger 22 clearing the lower chock 13, as FIG. 3 shows.
  • the drive mechanism on the other side either can be detached, or the drive mechanism can be removed with the rolls, for example as shown and claimed in Bode application Ser. No 714,636, filed Mar. 20, 1968. I perform these operations in reverse order to install rolls in the stand.
  • pins 39 in sockets 40 enable the two rolls and their four chocks to be handled as a unit. Since the pins are permanently fixed to the lower chock 13, there is no need for a workman to go near the roll stand to install or remove any connectors.
  • the various cylinders of course have the usual connections for admitting and discharging fluid under pressure. I control all these cylinders remotely from the operator's usual station. When 1 use the roll stand for a slab formed in a continuous-casting operation, I can remove and replace a set of rolls in the brief interval after a ladle is emptied before the next arrives (about 15 to 20 minutes) and all by remote control.
  • a horizontal roll stand which includes:
  • a balancing mechanism suspending said upper chock and roll from the top of said housing
  • balancing mechanism being adapted to lower said upper chock to a position resting on said lower chock
  • said hydraulic means supporting said lower chock in a position over said sled and being adapted to lower said upper and lower chocks to a position resting on said sled; the improvement comprising: a plurality of tapered pins upstanding from the upper face of said lower chock and being permanently fixed thereto;
  • said upper chock having sockets to receive said pins when the upper chock rests on the lower chock, whereby the chocks and rolls can be handled as a unit by remote control for removal and installation.
  • said upper chock having shoulders supported on said ledges but clearing the ledges when said chocks are lowered to rest on said sled.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US714564A 1968-03-20 1968-03-20 Horizontal roll stand for slab mill Expired - Lifetime US3583194A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71456468A 1968-03-20 1968-03-20

Publications (1)

Publication Number Publication Date
US3583194A true US3583194A (en) 1971-06-08

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US714564A Expired - Lifetime US3583194A (en) 1968-03-20 1968-03-20 Horizontal roll stand for slab mill

Country Status (8)

Country Link
US (1) US3583194A (enrdf_load_stackoverflow)
AT (1) AT300700B (enrdf_load_stackoverflow)
BE (1) BE730118A (enrdf_load_stackoverflow)
DE (1) DE1913757A1 (enrdf_load_stackoverflow)
ES (1) ES364969A1 (enrdf_load_stackoverflow)
FR (1) FR2004319A1 (enrdf_load_stackoverflow)
GB (1) GB1250718A (enrdf_load_stackoverflow)
NL (1) NL6904330A (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736785A (en) * 1970-05-08 1973-06-05 Siemag Siegener Masch Bau Rolling mill
US3861189A (en) * 1972-11-09 1975-01-21 Krupp Gmbh Four-high mill frame structure
EP0019239A1 (de) * 1979-05-10 1980-11-26 MANNESMANN Aktiengesellschaft Verfahren und Vorrichtung zum Betrieb eines Bandwalzwerkes
US4953380A (en) * 1988-06-29 1990-09-04 Sms Schloemann-Siemag Aktiengesellschaft Device for guiding rolling material in a rolling mill stand of a structural mill
CN114472516A (zh) * 2022-01-17 2022-05-13 肇庆宏旺金属实业有限公司 钢带加工线上的辊体安装结构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140929A (en) * 1936-04-17 1938-12-20 United Eng Foundry Co Rolling mill
US3208260A (en) * 1960-08-18 1965-09-28 United Eng Foundry Co Rolling mill
US3312096A (en) * 1963-10-03 1967-04-04 Davy & United Eng Co Ltd Rolling mills
US3436945A (en) * 1967-02-21 1969-04-08 Textron Inc Roll-changing apparatus for a rolling mill

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2140929A (en) * 1936-04-17 1938-12-20 United Eng Foundry Co Rolling mill
US3208260A (en) * 1960-08-18 1965-09-28 United Eng Foundry Co Rolling mill
US3312096A (en) * 1963-10-03 1967-04-04 Davy & United Eng Co Ltd Rolling mills
US3436945A (en) * 1967-02-21 1969-04-08 Textron Inc Roll-changing apparatus for a rolling mill

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736785A (en) * 1970-05-08 1973-06-05 Siemag Siegener Masch Bau Rolling mill
US3861189A (en) * 1972-11-09 1975-01-21 Krupp Gmbh Four-high mill frame structure
EP0019239A1 (de) * 1979-05-10 1980-11-26 MANNESMANN Aktiengesellschaft Verfahren und Vorrichtung zum Betrieb eines Bandwalzwerkes
US4953380A (en) * 1988-06-29 1990-09-04 Sms Schloemann-Siemag Aktiengesellschaft Device for guiding rolling material in a rolling mill stand of a structural mill
CN114472516A (zh) * 2022-01-17 2022-05-13 肇庆宏旺金属实业有限公司 钢带加工线上的辊体安装结构

Also Published As

Publication number Publication date
FR2004319A1 (enrdf_load_stackoverflow) 1969-11-21
NL6904330A (enrdf_load_stackoverflow) 1969-09-23
GB1250718A (enrdf_load_stackoverflow) 1971-10-20
ES364969A1 (es) 1971-02-16
BE730118A (enrdf_load_stackoverflow) 1969-09-19
DE1913757A1 (de) 1969-10-09
AT300700B (de) 1972-08-10

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