CN2825143Y - Water-stop roller of rolling mill - Google Patents

Abstract

The utility model relates to a water-retaining roller of a rolling mill, particularly a rolling mill used for hot processing and rolling high alloy steel, which comprises a roller and a hole groove of the roller. The utility model is characterized in that both end parts of the roller are respectively provided with a water-separating groove; the water-separating groove is inwards concave along the periphery face of the roller; both side faces of the water-separating groove are in the shape of a plain face, the bottom of the water-separating groove is in the shape of an arc (a semicircle or an elliptical curved face), and both of the two side faces of the water-separating groove are smoothly connected with the bottom of the water-separating groove; the depth of the water-separating groove is eight to twenty millimeters, and the width of the water-separating groove is ten to twenty millimeters; the distance between the flat side face of the water-separating groove, which is far away from the end part of the roller and the adjacent hole groove is more than 30 millimeters or is equal to 30 millimeters. When the utility model works, the cooling water section which lubricates the head and neck end parts of the roller flows into the surface of the roller and enters the water-separating groove on the end part of the roller; water in the water-separating groove is thrown out by the rotating roller to cause the hole groove of the roller to be in the state of no water. The utility model has the characteristics of novel design, reasonable design and high production operability; besides, the possibility that cooling water of a bearing seat enters the hole groove is stopped, the problem that a roller piece is clamped owing to the low temperature of the hole groove is solved and the phenomenon that the rolled piece is broken is avoided. The regular production of rolled pieces of high alloy steel is satisfied.

Description

Rolling mill dash roll

Technical field

The utility model relates to the roll of metallurgy industry cross-arranging type rolling mill, refers in particular to be used for the rolling rolling-mill roller of high-alloy steel hot-working.

Background technology

Rolling mill is the common equipment of metallurgy industry metal finished product material machine-shaping.Rolling mill hot-working is rolling, be exactly with high temperature (〉=1000 ℃) metal base, guide and guard auxiliary equipment before and after the rolling-mill roller (foreplate, turn over steel slide plate, double-deck roller-way etc.) guiding, constantly by the different passes between the roll, metal base is rolled into finished product metal material the most at last.Generally speaking, rolling mill can be divided into the vertical tandem mill of single-orifice type, the cross-arranging type rolling mill of porous type.

The cross-arranging type rolling mill (mainly is made up of type roll with holes, bearing, adjusting device; Be characterized in: roll is by bearing fixing; The lubricated general water cooling that adopts of rolling-mill roller bearing block, the neck of lubricated cooling roll end; The metal base rolled piece is out of shape in pass, obtains needed size) with its small investment, advantage that area of mill site is little, be active in the steel rolling industry.The characteristics of cross-arranging type three rolled steel machines are: three rolls are arranged above and below, and form a plurality of passes between the adjacent rollers and (form between top 2 adjacent rollers and go up roll line; Below form roll line down between 2 adjacent rollers), the hot-working that single chassis is implemented multi-pass to metal base is rolling.

When the hot-working of metallurgical industry high-alloy steel is rolling, just the metal base rolled piece (is called for short pass at the roll Pass slotted eye, sometimes be also referred to as hole slot or slotted eye) in deformation process in, rolling and closely related (the roller temperature height of roller temperature of the hot-working of rolled piece, the coefficient of friction of rolled piece and roll slotted eye is big, rolled piece is nipped easily, and hot-working is rolling more smooth; Otherwise, roller temperature is low, coefficient of friction between rolled piece and the roll Pass slotted eye is little, the rolled piece difficulty of nipping, the rolling difficulty of hot-working), therefore, the rolling-mill roller that is used for high-alloy steel hot-working Rolling Production, (improve roll slotted eye temperature height, it is big to increase roll slotted eye coefficient of friction, guarantees that rolled piece nips smoothly: rollingly adopt hot-rolling technology as last must to keep higher temperature; Adopt flame to scald slotted eye when rolling).But, because the cross-arranging type rolling mill is intrinsic, in the roll chock greasing, lubricated cooling water often sticks in roller surface, flows into the pass slotted eye of rolling-mill roller end face, and the pass slotted eye temperature of roll end face is reduced, cause the difficulty of nipping of rolled piece, cause rolled piece to scrap when serious.In the production practices, flow into the pass slotted eye of roll end face in order to prevent water, some operative employee adopts the method for the stifled bearing flowing water of angle cloth, and effect is undesirable, and is also dangerous.

Summary of the invention

The utility model designs a kind of rolling mill dash roll, be used for the rolling cross-arranging type rolling-mill roller of high-alloy steel hot-working, it is the architecture advances of traditional type roll 3 with holes, be characterized in: 1 water proof groove 1 is set in roll 3 ends, make the pass slotted eye 2 of roll 3 be in anhydrous state all the time, avoided pass slotted eye 2 temperature of roll 3 low, the rolled piece rolled piece that difficulty causes of nipping scraps phenomenon, satisfies the ordinary production requirement of metal rolled piece.

The rolling mill dash roll of the utility model design comprises roll 3, pass slotted eye 2, and it is characterized in that: two ends at roll 3 are provided with 1 water proof groove 1 respectively; Water proof groove 1 is along roll 3 periphery indents, and two sides are plane, and the bottom is an arc shape, two sides and bottom light slip; Water proof groove 1 depth H=8～20mm (too dark, influence roll 3 working lives; Too shallow, the water proof effect is bad), (width is too big, influences the layout of roll 3 passes for width B=10～20mm; Width is too little, the water proof effect is bad), water proof groove 1 planar side (water proof groove 1 right flank in roll 3 left sides far away from roll 3 ends, or water proof groove 1 left surface on roll 3 right sides) (L is too little with the distance L 〉=30mm of adjacent pass slotted eye 2, the lubricated cooling water of roll 3 bearing blocks may flow into rolling-mill roller 3 pass slotted eyes 2, reduce the temperature of pass slotted eye 2, influence the ordinary production of rolled piece); Above-mentioned in conjunction with constituting the utility model.

The arc shape bottom of water proof groove 1 can be semicircle, also can be oval curved surface.

Compared with prior art, the utlity model has following advantage:

1. simple in structure, easy to make;

2. handling safety, dependable performance;

3. dash is effective, avoided the low rolled piece that causes of roll Pass slotted eye temperature nip difficult matter so.

Description of drawings:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is conventional roll structural representation.

Specific embodiments:

Shanghai iron company mill is implemented the utility model patent at the cross-arranging type rolling mill, and the hot-working that is used for high-alloy steel is rolling.Comprise roll 3, pass slotted eye 2, it is characterized in that: two ends at roll 3 are provided with 1 water proof groove 1 respectively; Water proof groove 1 is along roll 3 periphery indents, and two sides are plane, and the bottom is an arc shape, two sides and bottom light slip; Water proof groove 1 depth H=8～20mm=15mm, width B=10～20mm=10mm, water proof groove 1 planar side far away and the distance L 〉=30mm=35mm of adjacent pass slotted eye 2 from roll 3 ends.During work: the roll 3 by bearing fixing rotates, and rolled piece is out of shape in pass, obtains needed size; The lubricated cooling water of roll 3 bearing blocks (the neck end of lubricated cooling roll 3) can partly flow into roll 3 surfaces, enters the water proof groove 1 of roll 3 ends; Under centrifugal action, the roll 3 of rotation throws away the water in the water proof groove 1, makes the pass slotted eye 2 of roll 3 be in anhydrous state always; Avoided pass slotted eye 2 temperature of roll 3 low, the rolled piece rolled piece that difficulty causes of nipping scraps phenomenon.

The utlity model has the characteristics that modern design is reasonable, production is workable, the water proof groove of roll end has been stopped the possibility that the lubricated cooling water of roll chock enters the roll pass slotted eye, solved the low rolled piece that causes of the roll pass slotted eye temperature difficult problem of nipping, avoid rolled piece to scrap the generation of phenomenon, satisfied the rolling ordinary production requirement of high-alloy steel rolled piece hot-working.

Claims (2)

1, rolling mill dash roll comprises roll (3), pass slotted eye (2), it is characterized in that: two ends at roll (3) are provided with 1 water proof groove (1) respectively; Water proof groove (1) is along roll (3) periphery indent, and two sides are plane, and the bottom is an arc shape, two sides and bottom light slip; Water proof groove (1) depth H=8～20mm, width B=10～20mm, water proof groove (1) planar side far away and the distance L 〉=30mm of adjacent pass slotted eye (2) from roll (3) end; Above-mentioned in conjunction with constituting the utility model.

2, rolling mill dash roll according to claim 1 is characterized in that: the arc shape bottom of water proof groove (1) can be semicircle, also can be oval curved surface.

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