US852983A - Method of rerolling rails. - Google Patents

Description

No. 852,983. PATENTED MAY 7,1907.

B. E.,SL IOK.

METHOD OF RBROLLING RAILS.

APPLIOATIOH FILED JAN. 19.1904.

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WITNESSES INVENTOR Ky -4QWM No. 852,983. PATENTED MAY 7; 19 o7.

' E. E. SLICK.

MBTHOD OF REROLLING RAILS.

APPLICATION FILED JAN.19.1904.

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WITNESSES- x No. 852,983.

B. E. SLICK.

PATBNTED MAY 7, 1907.

METHOD OF RBROLLING RAILS. APILIOATION rum) JAN.1B.1904

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EDWIN E. SLICK, OF PITTSBURG, l?ENNSYLVANIA.

METHOD OF REROLLING RAILS.

Specification of Letters Patent.

Patented May '7, 1907;

. Application filed January 19.1904. Serial No. 189,715.

To all whom it may concern:

Be it known that I, EDWIN E. SLICK, of Pittsburg, Allegheny county, Pennsylvania, have invented a new and useful Method of Rerolling Rails, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, forming part of this s ecification, in which 1- F i ure 1 is a side e evation of the roughing stain of rolls; Fig. 2 is a side elevation of the finishing stand of rolls, having the reducing passes arranged to carry out my improved method of re-rolling; and Fig. 3 1s a side e1e-' vation showing a modified arrangement of the roughing stand ofrolls The object of my lnvention 1S tO provide a method for re-rolling worn-out or defective rails of heavy section into rails of lighter section, in a more rapid and economical manner than heretofore possible, and to overcome the difficulties found in existing methods, by preventing over-filling the passes and consequent fins; also in preventin buckling, lapping, and forming of seams w 'ch when once formed will carry through the remaining passes and showon the rail when completed, as the steel will not weld at the temperature 1 used in rolling.

- One method of re-riollin rails heretofore known has been first to re uce the height of the rail inroll passes with the rail in such position that a hne through the center of the head, web and flange was at right angles to the axesof the rolls and then further to reduce the rail through passes with the center line of the head, web and flange of the rail parallel with the axis of the rolls. In this method the work Wasdone by the to and bottom sides of the passes, the vertica sides of the passes merely sup orting the material -while in the rolls. Anot 1er method has been to roll the metal. with a line through the center'of the head, web and flange of the rails ata slight angle with a line parallel to the axes of the rolls,

outer face of the flange 'at a ri ht angle to a line throu h the center of the ead and web portions 0 the rail.) The disadvantages of these methods lie in the large'number of reducing passes necessary to req'oll a rail,-on account of the small amount of red'iietion ossible in order to avoid buckling or lapping 1n the web of the rail, the forming of seai'ns, and the great difficulty in filling some poran le, in the next.

but with the flange of the rail; always normal to the head and web, (t. e., the

tions of the passes and in preventing overfilling and consequent fins. 3

One broad novel feature of my invention lies in bending the section so that the base flange in the live groove of the ass is at an angle of less than degrees'to the web while the flangein the dead groove is atan angle greater than 90 degrees.

In Fig. 1, I show five passes I, II, III,IV and'V, these being formed between the rolls pass as shown, the rail lies horizontally or with its axis parallel to the axes of the rolls. In this pass the flanges and the head are reduced in width, that is, inthe direction trans- 2, 3 and 4 of a three-high mill. In the first I versely to the plane of the web. In the next pass II, the section is bent so that the flange 5 in the live groove extends at lessthan an of 90 degrees to the plane of the rail angle we while the flange 6 1n the dead groove, is at an obtuse angle to suchline. In the third pass the section is bent in the other direction so that the flange 5; in the .dead passis at an obtuse angle, whilethe flange 6 in the live roove is at an an le greater than a right an e. In the succee ing grooves down to the al, pass, the bending of the shape takes place in each pass, each flange being at an obtuse angle in one pass and at an acute n Fi 2,1} show V, and through either one of which the rail is passed in coming from the fifth pass.- In this figure VII, VII are the fi'nishing'passes, in which the base flanges are restored to their normal position, the axial line of the rail is two passes VI, VI, which follow t e preceding passes, II, III, IV andparallel to the axes of the rolls, and the" reduction. preferably takes place throughout the rail section.

It will be noted that the preliminary pass, wherein the axis of the rail is parallel to the axes'of the rolls may be in any oneof the first passes; that is in the first pass the rail axis stantially the same as those of Fig. 1, while the pass I is an angular pass similar to the second pass. ith this set of roughing passes, the finishing asses may be the same as in Fig. 2-. It wilhbe notedthat in both forms of roughing passes, the shape is bent so that the flanges are out oftheir normal at less than the normal angle of the flange with the head and web portions of the rail position, in the angular passes.

By inclining the one part of the flange at a greater than the normal and the other part being rolled, I am enabled to reduce the metal both horizontally and vertically at the same time and .to greatly increase the amount ofreduction in each pass. .By means of the finishing passes VI and VII shown in Fig. 2.,

the rail is further reduced and formed .to the finished shape, the 'fl-ange' being restored to normal'position relatively to the web. In

this 'Wa the time required to re-roll is greatly.

- reduce and the output of the mill largely in- 1 multaneously reducing the shape,'and finallyres'to'ring the flange to its normal position section; substantia creased; the poss'ibi ty of buckling. and lapping. inpthevweb ort-ion of'the rails is removed, and the orming of fins and seams during the rolling. One groove of the pass for the flange may be inclined'to a greater or less angle than thenormal angle of the flange with the head and Web portions of the rail, the groove for the other flange remaining normal. The web, may be bent intermediately so that the flanges are out of their normal position to a' part only of the web, and other variations in the roll passes may be 2 made without departing from my invention.

I claim':

' ,1. The method of re-rolling rails, consisting in .feeding arail through a rel-ling pass, bending one of the base flanges inwardly therein to an acute angle-With the web, si-

and finishing the section in'a'later pass or passes; substantially as described. a

2.. The method of re:rolling rails, consisting in' feeding the rail througha rolling pass with its web in an inclined position relative to the axes of the. rolls, simultaneously bending one of the base flanges inwardly to an acute angle. to the web, and reducing the shape in both directions, and finally restoring the flange to its normal position and finishing the section; substantially as described,

3. The method of re-rolling rails, consisting in feeding the'rail through a rolling pass with its webat an angle to the axes of the rolls, bending the base flange in the live groove inwardly to an acute angle with the web, simultaneously reducing the shape in both directions, and finally restoring the flange to its normal position and finishing the y as described.

.4. The method of re-rolling rails, consisting in feeding the rail into a rolling pass, bending the flange in the live groove to an acute angle with the web,. and'reducing the section, then feeding the section into another pass with the other flange in the live groove, and bending said other flange inwardly, and finally restoring the flanges to normal position and finishing the section in a later'pass or passes; substantially as described.

5. The method ofjre-rolling rails, consis t ing in feeding the rail through a rolling pass, bending the section therein so that the angle between the-web and the flange in the live groove is less than a right angle, simultane ;ously redu cing the shape, and finally restor-' ing the flange to its normal position and finishing the section in a later pass or passes; substantially as described.

6i Themethod of re-rolling rails, consisting in feeding the same through rolling passes, bending the sha eso that the angle between the web and t e flange in the live groove is less thana right angle, then feeding the shape through another pass With-the" other flange in the live groove, and simultaneously bending the-shape so that the angle between the web and the other flange is less than .a right angle, and-finally restoring the flanges to their normal osition and finishing the section; substantial y as described.

7. :The methodof re-rolling rails, consisting in feeding the section through rolling passes with the web-at an angle to the aXes of the rolls, and alternately bending the opposite base flanges to an angle with the web which is less than a right angle in the successive passes "substantially as described.

8; The method of re-rolling rails, consisting in feeding the section. through a succession of rolling passes with the plane of the web at an arigleto the axes-of the rolls, alter nately feeding the o positebase flanges in the live groove, and a ternately bending said flanges, so that the angle between the flange in the live web is less tan a right angle, and at the same time bending the shape so that the at an angle of less than 90 degrees to the Web,

and the other flange is at an angle of'more than 90 degrees to the web, passing the first named flange through the live groove, and the latter obtuse angle flange through the oove and the plane of the dead groove, then bending in the opposite direction, and passing the metal With the op posite flanges in the respective grooves, and then restoringthe flangesto their normal p0- 20 the section; substantial 5 lel to the roll axes, then bending the shape so that the angle between the web and the flange in the live groove is less than a right angle, simultaneously reducing the shape, and finally restoring the flange to its normal to position and finishing the section in a later pass or passes; substantially as described.

.1 12. The method of re-rolling rails, consistumg in rolling the rail with its axis arallel to "the roll axes, then rolling the rail with its 15 axis at an angle to the roll axes, and simultaneously bending it so that the angle between the Web and the flange in the live grooveis less than a right angle, and finally restoring the flange to its normal )osition and finishing l y as described.

13. The method of rolling flange sha es, consisting in feeding the shape througi a rolling pass, bending the section therein so that theangle between the Web and the flange in the live groove is less than a right angle, simultaneously reducing the shape, and finally restoring the flange to its normal position and finishing the section in a later pass or passes; substantially as described.

14. The method of rolling flanged sha es, consisting in feeding the shape throng a rolling pass with its web at an angle to the axes of the rolls, bending the section therein so that the angle between the web and the flange in the live groove-is less than a right angle, simultaneously reducing the shape, and finally restoring the flange to its normal position and finishing the section; substantially as described.

In testimony whereof, have hereunto set my hand.

EDWIN E. SLICK.

Witnesses:

JOHN MILLER, H. M. CORWIN.

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