US1555919A - Rolling mill - Google Patents

Description

Patented Oia. 6,1925.

UNITED STATES I A ,y 1,555,919 PATENT OFFICE.'

JEROME GEORGE AND JOHN W. SHEPERDSON, OF WORCESTER, "MASSACHUSETTS, AS-

' SIGNORS TO MORGAN CONSTRUCTION COMPANY, 0F WORCESTER, MASSACHUSETTS,

, A CORPORATION OF .MASSACHUSETTS ROLLING MILL.

v v Application filed April 27, 1922. Serial No. 556,866.

ots to adiversified-Eroduct.' of, blooms, bilets, slabsand sllhet ar, together with mechanical means for disposing of these products after rolling.

The features andadvantagesof the invention are fully set forth in the'following description, reference being had to the accompanying drawing, wherein the single figure 1s a diagrammatic plan view of rolling mill apparatus combined and arranged in' accordance with the invention.

Referring to said fi'awing, 1 represents the rolls of a blooming mill of any well known construction, the same serving for the preliminary reductionof large size ingots taken from a soaking pit, notl shown.- From the receiving table 2 ofthe mill, the blooms are delivered to a suitable longitudinal conveying mechanism 3, consisting preferably of a seriesof power driven onveyor` rolls of any well known type, the same-extending the entire distance intervening between the table 2 and a bloom shear 4.

At a plurality of intermediate points in the length of conveying mechanism 3, provision is made for the broadside movement of the material onto and of of the conveying rolls 3. One such broadside transfer mecha'- nism is indicated diagrammatically at 5, as connecting the conveying mechanism 3 with a similar longitudinal conveying mechanism alinement with,'and is adapted to deliver to a reducing roll train 7 which serves for the production, for instance, of large size billets and slabs.

The several stands of rolls of the train 7 preferably provide, in the usual manner, a plurality of rows of differentlyshaped passes,'to give such variety as may be desired in the cross section of the reducedmaterial emerging therefrom. 'In v4advance of the initial pass of the rolling mill 7 is preferably disposed a crop shear 8, which operates in a usual manner to remove the crop ends of the blooms incidental to the reduction of same to form billets or slabs.

Another broadside transfer mechanism is indicated diagrammatically at 9, the same being interposed between thel conveying .mechanism 3 and anotherlongitudinal conveying mechanism l0, the latter being substantially in alinement with the conveying mechanism 6 and consisting preferably of a `series of ordina-ry conveyor rolls.v The` conf veying mechanism l0 1s disposed in 'alinement with, and is adapted to deliver to a reducing roll train 11 which serves for the production, for instance, of small and medium sized billets and sheet bar. The several stands of rolls of this mill are also referably provided with a plurality of independent rows Of differently-shaped passes, to give such variety as may be desired inthe cross section of the reduced material emerg-4 ing therefrom. As part of the equipment of the mill l1, one .or more stands of edging rolls 12, l2 may also be provided, by the use of which sheet bar of variable thickness may be rolled thereby. In advance of the initial pass of the roll train 11 is preferably disposed a crop shear 13, the same serving for the 'removal of the crop ends of the bars as y delivered thereto by the conveying mechanism 10.

Said conveying mechanism 10, serving for the delivery of material to the billet and sheet bar mill l1, as above described, is so disposed with relation to the larger billet mill 7 as to constitute, in effect, the run-out of the latter; in other words, the power driven conveyor rolls of mechanism 10 may serve, when desired, for the continuous longitudinal movement of stock between the two independent roll trains 7 and 11, receiving said stock from the larger .mill and advancing it for further reduction by the smaller mill. The reduced product emerging from the smaller mill may be operated upon in any manner desired, as'for instance, by being cut up in a. flying shear 14', suitably located in the run-out 15 of mill ,'l pr,e-

liminary to movement onto a cooling bed 16 ofany well-known type. Or, if the product of roll train 11 emerges in the form of sheet bar, the same may be operated upon by rolls 17 adapted to assemble the sheets one upon the other in a stack or pile preparatory to their delivery to the cooling bed 16.

With the arrangement of mechanism above described, the product of blooming mill 1 may, if desired, be carried :forward by conveying mechanism 3 without any fur- I Vithsuch of the product of blooming `mill -1 as is destined for further reduction,

either one of the broadside transfers 5 orv 9, or both of them, are brought into operation. Such transfermechanlsms are of the usual construction, providing a series of transfer supporting skids across 'which the stock is moved broadside, by engagement therewith of a lurality of moving lugs or projections'carried, for instance, by endlesschains or cables; such projections can travel in either direction to ca rry the stock either I -onto and ofthe lrolls of'conveying` mechanism 3, .or lonto .and voff of the rolls *of conveying mechanisms 6 and 10. As a consequence, it is \possible-.to shift any desired part-of the product of lthe blooming mill 1 over to the conveying mechanism 6 for further reduction by the roll traiu?. Such reduced product, emerging in the form of large size billets or slabs on conveying mechanism 10, maythen be transferred back to conveying'mechanism 3 across the skids of transfer mechanism 9, and thence carried forward to shear 4 and cooling bed 20. Or, if desiredfsuch reduced product, or any part thereof, may be subjectedto further reduction by; roll, train' 11; emerging in the form-@feine ler billets and bars, the same may be cuti to commercial lengths by flyin" shear 1t-before lpassage onto cooling bel-drs 16, or'fin the case of sheet bar, operated upon vby' piling'rolls 17.

Undercertain circumstances, such asthe temporary' inoperativeness'of the mill 7, it maybe convenient to deliver the product ofblooming -mill v'1- directv to the reducing rollitrai'n f 1.1, i'nvhich :case thev transfer mechanism 9 :is employed for this purpose,

.thereby-passing mill'k7 entirely. In any case, such tranttpr mechanism 5 and9, sin-ce they operate in eitherdirection, maybe employed, when and as desired, to return to the conveying mechanism 3 any product 'normallydestined for reduction either by roll train'7 or roll train 11, but which for any reason, as the formation of a Cobble, may be prevented from entering the passes of the mills 7 or 11. In this way the arrangement of apparatus particularly lends itself to the continuous uninterrupted disposition of the product of blooming mill 1,

lsince inthe event of any emergency which necessitates the temporary stoppage either of roll'train 7 or train 11, or both, it is not necessary to interrupt production; ,if one or the other of said roll trains is rendered inoperative, the other can be used, and if both are Vrendered .-inoperative, the product o f blooming mill 1 can still be disposed onthe cooling ,bed 2O or on the cars 19.

1. In apparatus of rthe classv described, the combination with' longitudinal conveyinv means for the product of a bloomingmil, of a `plurality of independent reducing. roll -trains parallel to but out. of line witl said conveying means, and means selective duction of said blooming mill product -by either of said'roll'trains, or 'both of them.

2. Inapparatus of the class described, the combination with longitudinal conveying meansfor the product of a blooming mill,

of a plurality of alined reducing .roll trains out of line with said conveying means, means for transferring said product broadoperable to procure the further re'jx' side, for reduction by'one or the other of said roll trains, and means for retu'rnin the `reduced material from one of said rol trains to said longitudinal conveying means.

3. In 'apparatus of the class described,lthe combination with longitudinal conveying means forthe product of a blooming mill,

of a plurality of alined reducing roll trainsV ,i-

out of line with said conveying means, means for transferring said product broad-- side, for reduction by the first of said r'oll trains, and .means selectively operableto procure further reduction of said product by another roll train, or to returnv same to saidl longitudinal conveying means.

4. the combination with a bloomingmill, of

a reducing roll train out of line with the center line of said blooming mill, means operable to deliver the product of'said bloom- In a apparatus-of the class described uio ing mill to said roll train, for further re-A duction therein, and common shearing, assembling and cooling means for the product,

as delivered by said blooming mill and said roll train. d u

d 5. In apparatus of the class described, the combination with a blooming mill, ofa reducingroll train out of line -With the center line of said blooming mill, asecond roll train alined with the first, means operableto deliver the product of said blooming mill to either 4or both of said roll trains, and common. shearing, assembling, and cooling means for the product, as delivered by Said blooming mill and said two roll trains.

6. In apparatus of the class described,

the combination-with longitudinal convey-4 in means for the product of a blooming m11, of a plurality of .alined independent continuous rolling mills out of line lwith said conveyin means, means for transferring said protduct broadside, for reduction byone or the otherof said rolling mills, and means for returning the reduced material from one of said -mills to said longitudinal conveying means.

7. In apparatusfof the class described, the combination with I longitudinal .conveying means for the product ofl a blooming mill, of a plurality of a-linedlindependent continuous rolling mills out of line with said conveying means, means for transe' ferring said product broadside, for reduction by the first of said rolling mills, and means selectively operable to procure further reduction of said product by another roll train, or to return same to said longiltudinal conveying means. i

.8. In apparatus of the class described, the combination with longitudinal'convey- `in means for the product of a blooming

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