US2050046A - Cold-rolling steel strip - Google Patents

Description

x f U m 1936- w. o. EVERLING 21350946 7 GOLD ROLLING STEEL STRIP Filed Jan. 21, 1935 2 Sheets-Sheet 1 'Fgd.

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WQLTEE 0 EVEEL/Ni,

Aug. 4, 1936. w. o. EVERLING 2,050,046

COLD ROLLING STEEL STRIP Filed Jan. 21, 1955 2 Sheets-Sheet 2 lnvenfor: W41. TEE '0. ZVEEL //\/c;,

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Patented Aug. 4, 1936 COLD-ROLLING STEEL STRIP Walter 0. Ever-ling, South Euclid, Ohio, assignor to The American Steel and Wire Company of New Jersey, a corporation of New Jersey Application January 21, 1935, Serial No. 2,811

2 Claims.

This invention relates to the art of cold-roll-, ing steel strip, one of the objects being to produce strip covered with a minimum amount of oil by means of a cold-rolling mill having the conventional oil-lubricated working rolls.

An example of the invention is illustrated by the accompanying drawings, in which:

Figure 1 shows strip passing over the bottom roll of a mill to which any example of the invention is applied.

Figure 2 shows the edges of the strip and the ends of the rolls.

Figure 3 shows the strip leaving the rolls and illustrates the operation of the invention.

These drawings show the working rolls I of a cold mill. The oil is applied in several ways, but in all cases it is carried on the rolls so as to contact the strip, marked S in the drawings, as it enters the working pass.

Because of the seal formed by the heavy-pressured contact of the rolls I with the strip S, any excess oil is effectively prevented from flowing onto the latter except at its edges. Since the oil is not sealed at the dead portions of the pass, it there forms rings through which the strips edges are dragged, some oil clinging to these edges and eventually creeping from them onto the surfaces of the strip to a sufiicient extent to interfere with bright annealing operations.

The remedy heretofore used consisted of various methodsand devices for wiping or otherwise removing this oil from the surfaces of the strip. Such procedure has drawbacks, but was resorted to for the lack of anything better.

Now the present invention covers a method of producing cold-rolled strip, which includes rolling the strip by means of a cold-rolling mill having oil-lubricated working rolls, while blowing the lubricating oil away from the pass of the rolls not occupied by the strip, in a direction such that it will not contact the latter as it leaves the rolls.

v It is apparent that this method is particularly part of the pass not being actively used and which,

therefore, contains 011.

Certain apparatus is also covered by the invention, and this will now be disclosed with the aid of the drawings.

A bar 3 is fastened transversely across the mill at a level well working rolls I and on the exit side of the latter.

below the pass line of the Two brackets 4 are fixed to this bar by fastenings 5, the latter being releasable to permit adjustment of the brackets along the bar.

Incidentally,

and point toward the of the letters pass.

considered as being nozzles.

tained when the end extremes of. the live portion These end portions may be The best effect is obportions 6 cant slightly towards the extremes of the live or active pass, and their tips extend between the rolls so as to terminate closely adjacent the pass of the latter in such mutually spaced relationship as is necessary. The use of tapered tips sitionlng.

permits closer po- When these nozzles are supplied with air or any other fluid under pressure, they eject high-velocity jets of fluid into the nip of the rolls toward the edges of the strip S, this effectively blowing the oil to points remote from these edges so as to prevent flowing onto the latter. The figure showing the operation of the invention shows the ring of oil in its displaced positionby solid lines, and

action is secured, the

The

ease with which the oil can be removed depending largely on its physical characteristics.

I claim:

1. A method of producing cold-rolled metal .4 strip, including rolling said strip by means of a cold rolling mill having oil-lubricated working rolls, while blowing the oil away from the pass of said rolls not occupied by said strip in a direction opposite the travel of the latter as it leaves said rolls.

2. A method of producing cold-rolled metal strip, including rolling said strip by means of a cold-rolling mill having oil-lubricated working rolls, while blowing the oil away from the portions of the pass of said rolls adjacent said strip that is not occupied by the latter, in a direction opposite the travel of said strip so it leaves said rolls.

WAL'I'ER O. EVERLING.

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