US968464A - Art of rolling. - Google Patents

Description

C. M. GREY.

ART or ROLLING.

. APPLICATION FILED SEPTA, 190B. 968,464, Patented Aug. 23,1910.

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G. M. GREY.

ART 0F ROLLING.

APPLIoATloN FILED SEPT. 4, 190s.

Patented Aug. 23, 1910.

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STATES PATENT OFFICE.

CHARLES M. GREY, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO NEW YORK STEEL BEAM @t GIRDER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

ART OF ROLLING.

Specification ofy Letters Patent.

Patented Aug. 23, 1910.

To all whom it may concern:

Be it known that I, CHARLES M. GREY, a citizen of the United States, residing in East Orange, county of Essex, and State of New Jersey, have invented a certain new and useful Improvement in the Art of Rolling, of which the following is a specification.

`This invention is a process of, and apparatus for, rolling flanged shapes, such as I and H beams, girder beams, columns and channels, and is of particular value in rollingsections of the character specified when it is desired that the inner faces of the flanges on said sections shall be inclined at an obtuse angle to the web. When the flanges are straight, or, in other words, form a right angle with the web, no special difliculty exists in rolling them by the methods and apparatus heretofore employed. Furthermore, the inventionv is of special importance in rolling sections of the character specified when it is desired to produce sections wherein the mean thickness of the flanges, compared with the thickness of the web, is comparatively great; or, in other words, produce sections having webs that are thin compared with the mean thickness of the flanges. It has been found to be practically impossible to roll sections of this latter character by the methods and apparatus heretofore devised, owing to the tendency of the section to spread, z'. e., widen at the flanges, or of the web to buckle. My invention overcomes these difliculties and enables beams, of the character specified, to be rolled expeditiously and sat-isfactorily, and, accordingly, is a pronounced advance in the art.

The invention enables me to produce, from properly shaped blooms or bars, I-beams, H- beams, girder beams, channel bars, etc., free from buckled webs and other injurious defects, upon a type of universal mills rovided with horizontal and vertical rolls, all the axes of which are in the same plane, and the working surfaces of whose vertical rolls are substantially at right angles to the web working surfaces of the horizontal rolls.

The process consists, mainly, in passing the bar under manipulation and without at any time turningA it, several times through one train of universal rolls, the two pairs of horizontal rolls of which have their sides which are contiguous to the inner contour of the flanges at an angle to the axis of the web producing faces, such angle being the same on both of the said pairs of horizontal rolls; then passing the bar one or more times through another train of universal rolls, the two pairs of horizontal rolls of which have their sides which are contiguous to the inner contour of the flanges at an angle to the web producing faces which is less obtuse than the corresponding angles of the first universal train of rolls, this latter angle, z'. c., the less obtuse angle being substantially the same on both pairs of horizontal rolls forming part of the second universal train of rolls. It is to be understood that the working surfaces of all vertical rolls are always substantially at right angles to thJ1 web working surfaces of the horizontal ro s.

In the accompanying drawings I have illustrated one practical embodiment of the apparatus forming part of the invention, and capable of use in practicing my process, but the construction shown therein is to be understood as illustrative, only, and not as defining the limits of the invention. For example, the mill or apparatus forming the subject matter of my co-pending application, Serial No. 451,722, filed September 4, 1908, is particularly adapted for carrying out the process herein disclosed.

Figure 1 is a diagrammatic plan View of one of the arrangements of roll trains that may be employed for the production of flanged I, H, girder, or channel-shaped bars; Fig. 2 is a front view of a universal rolling mill adapted for rolling the hereinbefore mentioned sections; Fig. 3 is an enlarged View of one of the horizontal rolls used in stand, C, Fig. 1. Fig. 4 represents, approximately, in full lines a partially rolled beam section as it leaves the first train of rolls, and the dotted lines show, approximately, the contour of the same beam section as it appears after passing once through the the first main mill, and coperating there with is the supplementary or flange ed e rolling mill, B; E is the second main mil, and, cooperating therewith is the second supplementary or flanged edge rolling mill, D. For the purpose of explaining the in vention, I have not deemed it necessary to illustrate more than two mainl mills, with their corresponding supplemental mills, though it will of course be understood that three or more mills may be used if desired. It will be understood, moreover, that the invention is not restricted to the employment of the supplementary mills in conjunction with the main mills.

Supplementary mills, B and D, which regulate the width of the flanges contain, only, two horizontal rolls, while the main trains, or universal mills, C and E, each contain four working rolls as hereinafter described. It will, of course, be understood that the first set of universal rolls, C, is employed to successively reduce, after successive adjustments of the horizontal and vertical rolls, the cross sectional area of the bar until it is reduced to the size desired, or nearly finished, when the second set of universal rolls, E, are used to finish the bar by similar successive rollings, the horizontal and vertical rolls being properly adjusted after each passage of the bar through the same.

A shear or saw is shown at F, for cutting off crop ends, and, as is usual, the various sets of rolls are provided with tables, G, for properly feeding the pieces operated upon.

The mill, A, is for shaping ingots into a blank or shape suitable for entry into the first supplementary and main mills, B andA C, respectively. These reduce the shapes into bars of smaller cross sectional area and with the angle of the inner contour of the flange greater than it will be after the bar has passed through the succeeding sets of rolls, D and E, respectively. The bar having passed through the rolls of mills B and C, and having been reduced sufiicientl is carried forward, by means of tables, (x, to roll trains, D and E, the rolls of these trains having the angles forming the inner contours of flanges smaller than the corre sponding angles of the preceding set.

In Fig. 2, I have illustrated an universal mill, such as is shown in diagram by C and E, in Fig. 2, H and I, representing the horizontal rolls, K and L, the vertical rolls, and, m, the piece being operated upon. The various adjusting mechanisms for the rolls, as well as the driving connections, being well known, it is not thought necessary to refer to them in detail. With the main horizontal rolls, such as H and I, of each mill, operating to reduce the thickness of the web and also in conjunction with the vertical rolls, such as K and L, operating to reduce the ange thickness, the bar is finally brought to the proportion and shape desired.

Fig. 3 shows, approximately7 the contour of horizontal rolls in train, C, while Fig. 5 shows, approximately, the working parts of horizontal rolls in train, E. It will be observed that while -the angles of inclination of the side working faces of horizontal rolls in main train, C, are greater than the corre sponding angles in the rolls of main train, E, the width of the web producing surfaces, in the former are less than in the latter; in other words, rolls in train, E, have wider web-rolling portions than the rolls in train, C. The construction of rolls in mills, C, E, as described, is what enables me to accom plish my desired results. The surfaces of the two horizontal rolls in supplementary mill, B (the only rolls in said mill), which bear upon the inner sides of the flanges of the bar, have the same taper, preferably, as the surfaces of the horizontal rolls in its cooperating main mill, which latter rolls do the work on the imier surfaces of the flanges. The same is true of the rolls in supplementary mill, D, with respect to the horizontal rolls in main mill, E.

Fig. 4 represents in full lines, approxi mately, the contour of the rolled beam sec tion after it leaves the rolls in mill, C, and,

nin dotted lines, substantially its contour after having been operated upon by the rolls in mill, E. It will be observed that in both instances the inner faces of the flanges are inclined, or, in other Words, make obtuse an gles with the webs.

It will be understood that in all universal mills, of the character 'hereindescribeth such as C and E, the horizontal rolls work on both sides of the web and the inner sides of the flanges, and the vertical rolls work on the outer side of the flan es at each passage of the bar through the mill; the supplementary rolls working on the edges of the flanges of the bar.

My invention is not restricted to the details described, but, as will be understood by those skilled in the art, may be modified within the scope of the appended claims.

Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent is:

l. In the art of rolling channeled beams or sections, the process which consists in successively passing the piece under manipula tion through a universal train of rolls having horizontal and vertical rolls whose axes are in the same plane, the working sides of each horizontal roll being inclined at an obtuse angle to a horizontal plane passing through the axis of said roll, and then suc cessively passing the piece through a second unlversal train having horizontal and vert1cal rolls whose aXes are 1n the same plane,

and wherein the corresponding obtuse angle of the working sides of each horizontal roll is less than that in the first mill, thus securing a greater reduction in the thickness of the root of the flanges than is obtained at the points of said flanges.

2. In the art of rolling channeled beams or sections, the process which consists in successively passing the piece under manipulation through a universal train of rolls having horizontal and vertical rolls the axes of which are in the same plane, and wherein the working side faces of each horizontal roll are inclined at an obtuse angle to a horizontal plane passing through the axis of said roll, the width of the vweb rolling surfaces of said mill remaining substantially the same during the successive passes of the piece, and then successively passing said piece through a second universal mill having horizontal and vertical rolls the axes of which are in the same plane, and wherein the corresponding obtuse angle of the working side faces of each horizontal roll is less than that in the preceding mill, the width of the web rolling surfaces of said second mill remaining substantially the same in each of the passes of the piece therethrough.

3. In the art of rolling channeled beams or sections, the process which consists in passing a suitably prepared bloom or blank through a universal mill embodying horizontal and vertical rolls the axes of which are in the same plane alternately in one direction and then in the opposite direction, and in which mill the sides of the two horizontal rolls, contiguous to the inner contour of the flanges on the piece being rolled, are inclined at an obtuse angle to the web producing faces, then passing said piece to and fro through another universal mill having the axes of its horizontal and vertical rolls in the same planes respectively as the aXes of the corresponding rolls of the first universal mill, the two pairs of horizontal rolls of which second mill have their sides, contiguous to the inner contour of the fianges on the piece, inclined at an angle to the web producing faces less obtuse than those on the first universal mill.

4. In the art of rolling channeled beams or sections, the process which consists in passing a suitably prepared bloom or blank through a universal mill embodying horizontal and vertical rolls the axes of which are in the same plane, alternately in one direction and then in the opposite direction, and in which mill the sides of the two horizontal rolls, contiguous to the inner contour of the flanges on the piece being rolled, are inclined at an obtuse angle to the web producing faces, the web rolling faces in said mill being of the same width during all of the said passes, then passing said piece to and fro through another universal mill having horizontal and vertical rolls the axes of which are in the same plane, the two pairs of horizontal rolls of which have their sides contiguous to the inner contour of the flanges on the piece, inclined at an angle to the web producing faces less obtuse than those on the first universal mill, the web rolling surfaces in said second mill being the same for all the passes therethrough, and yet wider than the web rolling surfaces in the first universal mill.

5. The combination of a universal mill comprising horizontal and vertical rolls so positioned that their axes are in the same plane, the said horizontal rolls having tapering sides, and a second universal mill comprising horizontal and vertical rolls so positioned that their axes are in the same plane, the horizontal rolls of said second mill having tapering sides of such taper that the web rolling surface is more than the corresponding surface in the first mill, the vertical rolls of said second mill being closer -together than the corresponding rolls of the first mill whereby the entire section rolled thereon is narrower than when it left the first universal mill.

6. The combination of a universal mill having horizontal and vertical rolls the axes of which are in thesame plane, through which a suitably shaped blank may be rolled alternately in one direction and then in the opposite direction therethrough, and in which mill the web reducin roll has tapered sides, the width of the we producing surface on said roll being the same in all of said passes, and a second universal mill having horizontal and vertical rolls the axes of which are in the same plane and wherein the web reducing roll is wider than the corresponding surfaces of the first mill, the body of the rolls on said second mill being narrower than those of the preceding set, if measured at a point near to where the outer ends of the flanges are rolled.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES M. GREY.

Witnesses:

H. I. BERNHARD, V. E. MARKMANN.

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