CN201186289Y

CN201186289Y - Apparatus for cooling roller ring

Info

Publication number: CN201186289Y
Application number: CNU200820055621XU
Authority: CN
Inventors: 马宝国; 董建超; 龚飞; 蔡英; 夏玲; 顾新根; 郑雨旸
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baosteel Special Steel Co Ltd
Priority date: 2008-02-21
Filing date: 2008-02-21
Publication date: 2009-01-28
Anticipated expiration: 2018-02-21

Abstract

The utility model discloses a roll collar cooling device on a metal wire hot-rolled production line, wherein the roll collar cooling device comprises a body and two arc clamping straps, wherein a water inlet is arranged on one end of the body, a circular arc end surface is arranged on the body, a plurality of nozzles are arranged on the circular arc end surface, the two arc clamping straps are respectively located on and under the circular arc end surface, and the arc clamping straps are fixed on the body. The roll collar cooling device of the utility model enables a roll collar to be fully cooled and the temperature of the roll collar working condition is stably controlled.

Description

The collars cooling device

Technical field

The utility model relates to a kind of cooling device, the finishing mill collar cooling device on particularly a kind of metal wire rod hot rolling line.

Background technology

Metal wire rod is one of kind common in the metallurgic product.The production procedure of hot-rolling metal wire rod is: the steel billet heating, at first enter breaking down tandem mill thermal processing distortion, the finishing mill on high line rolls into straight pole then, pinch roll, the swan neck system in the pole of size up to specification road behind rolling mill, to Laying head, be to become metal wire rod at last.Therefore, the cooling device of the finishing mill collar on high line tandem rolling be must be little on the production line apparatus.Cooling device is used for carrying out cooling processing to running up in the finishing mill and rolled piece being done in the carbide roll ring slotted eye of thermal processing distortion, prevents the collars surface because the expansion of the hot micro-crack degree of depth.

Fig. 1 is the schematic diagram of existing collars cooling device, and as shown in the figure, existing collars cooling device external form is semicircle metal circular tube, form by a straightway 1 and semi arch pipe 2, and in the pipe cooling-water duct; Total several outlet pipes 3 are installed in the side of semi arch pipe 2, i.e. water jet, and material is a stainless steel material.

Existing collars cooling device, vertically inject directly on by the outlet pipe on the collars cooling device 3 in the slotted eye of collars 4, belong to open cooling, in the time of in working order, most of water yield is gone out with the retroeflection of pass angle from roller groove sidewall, the cooling water inflow utilization rate is not high, simultaneously, tubular water pipe stops up easily, easy cleaning does not have influence on the cooling effect in the collars roller groove, makes roller groove face temperature high, often cause collars surface rapid heat cycle in process of production, because excessive temperature differentials, makes and causes the micro-crack expansion in the rolling loading process of carbide roll ring slotted eye easily at 20 ℃～50 ℃ through low temperature instrument measuring roll ring surface temperature difference fluctuation range, and be difficult to eliminate micro-crack after the reconditioning, and cause the quality problems of finished product wire rod.

Summary of the invention

For addressing the above problem, the utility model provides a kind of collars cooling device, and the whole roll surface of collars slotted eye and collars is all fully cooled off, can be owing to rapid heat cycle damages with the protection collars.

For achieving the above object, collars cooling device of the present utility model, comprise a body and two curved splints, one end of described body is provided with water inlet, described body is provided with the circular arc end face, described circular arc end face is provided with a plurality of nozzles, and described two curved splints lay respectively at the above and below of described circular arc end face, and described curved splint is fixed on the described body.

Described curved splint is fixed on the described body by screw.

Described its shape of nozzle is a rectangle.

The spray angle of described nozzle is 15～30 degree.

Described body is made of cover plate up and down, and cover plate connects by bolt up and down.

Collars cooling device of the present utility model, collars is fully cooled off, the stable temperature of having controlled the collars duty has reduced hot micro-crack extension in the slotted eye, effectively avoids collars to draw that crack depth prolongs the impaired incident of collars that causes and to the influence of wire rod inherent quality problem.

Description of drawings

Fig. 1 is the schematic diagram of existing collars cooling device;

Fig. 2 is the schematic perspective view of the collars cooling device of the utility model preferred embodiment;

Fig. 3 is the internal structure schematic diagram of collars cooling device among Fig. 2;

Fig. 4 is the cutaway view of collars cooling device among Fig. 2;

Fig. 5 is the spray angle schematic diagram of circular arc end face top nozzle;

Fig. 6 is used for the schematic diagram of collars cooling for collars cooling device of the present utility model.

The specific embodiment

Fig. 2 is the schematic perspective view of the collars cooling device of the utility model preferred embodiment, and Fig. 3 is the internal structure schematic diagram of collars cooling device among Fig. 2, and Fig. 4 is the cutaway view of collars cooling device among Fig. 2.Shown in Fig. 2～4, the collars cooling device comprises a body 10, body 10 is a box body formula structure, one end of body 10 is provided with water inlet 11, one side of body 10 is provided with circular arc end face 20, circular arc end face 20 is provided with a plurality of nozzles 21, and respectively there is a curved splint 30 above and below of circular arc end face 20, and curved splint 30 is fixed on the body 10.

Curved splint 30 can be one-body molded with body 10, also can be fixed on the body 10 by screw, can also fix by modes such as welding.

Body 10 can be made of dismountable two parts up and down, promptly by being combined into by upper and lower cover plate, lower cover can be made structure as shown in Figure 2, cover plate can link into an integrated entity by screw 12 usefulness bolts on the cover plate up and down up and down, can be easy to open by bolt like this, easily body 10 inner passing through are regularly cleaned, and nozzle 21 is cleared up, prevent spray nozzle clogging.

The surface of circular arc end face 20 can be profile of tooth, and the profile of tooth end face is convenient to process and control the water spray angle of nozzle 21.The shape of nozzle 21 is preferably rectangle, and the spray angle of each nozzle needn't be identical, and is preferably interlaced, so that collars obtains good cooling.Fig. 5 is the spray angle schematic diagram of circular arc end face 20 top nozzles 21, the direction of arrow shown in the figure is the water spraying direction of nozzle 21, the spray angle α of nozzle 21 is meant that nozzle 21 is to the water spraying direction offset nozzle 21 of collars 40 and the angle of collars 40 axial connecting lines, the spray angle α of nozzle 21 is 15～30 degree preferably, slow down the reflectivity of cooling water.

Fig. 6 is used for the schematic diagram of collars cooling for collars cooling device of the present utility model, and collars cooling device of the present utility model is when assembling, and curved splint 30 is close to collars 40 surfaces along the limit, with the clearance control of collars contact portion about 1mm.During work, breaking down hot rolling pole 50 enters high-speed wire mill, under collars 40 effects that run up, carry out machining deformation, two collars 40 other collars cooling devices of the present utility model that respectively are provided with, cooling water enters from water inlet 11, nozzle on the circular arc end face 20 21 ejections then are injected on the collars 40, and collars 40 is cooled off.The above and below of circular arc end face 20 respectively has a curved splint 30 nozzle 21 can be penetrated on the arc-shaped surface that the cooling water that go accumulates in collars 40 once more circulate cooling and can the whole roll surface of collars 40 being cooled off of collars 40.Last cooling water in curved splint 30 two side ends and collars 40 slotted eyes along with collars 40 traffic directions are got rid of.

Collars cooling device of the present utility model has effectively been controlled various and each steel grade characteristic different and cause the line collars surface rapid heat cycle phenomenon and the collars ectonexine temperature difference by the wire rod description, the as-rolled condition of keeping in balance chilling temperature has improved carbide roll ring slotted eye micro-crack expansion greatly and has been produced the roller groove incident that loses flesh by micro-crack.

Claims

1, a kind of collars cooling device, it is characterized in that, comprise a body and two curved splints, one end of described body is provided with water inlet, described body is provided with the circular arc end face, described circular arc end face is provided with a plurality of nozzles, and described two curved splints lay respectively at the above and below of described circular arc end face, and described curved splint is fixed on the described body.

2, collars cooling device as claimed in claim 1 is characterized in that, described curved splint is fixed on the described body by screw.

3, collars cooling device as claimed in claim 1 is characterized in that, described its shape of nozzle is a rectangle.

4, collars cooling device as claimed in claim 1 is characterized in that, the spray angle of described nozzle is 15～30 degree.

5, collars cooling device as claimed in claim 1 is characterized in that, described body is made of cover plate up and down, and cover plate connects by bolt up and down.