CN210907397U

CN210907397U - High-compactness wear-resistant semi-steel roller

Info

Publication number: CN210907397U
Application number: CN201921879256.9U
Authority: CN
Inventors: 颜新春; 匡阿根; 蒋小青
Original assignee: Changzhou Changji Metallurgical Roll Co ltd
Current assignee: Changzhou Changji Metallurgical Roll Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-07-03
Anticipated expiration: 2029-11-04

Abstract

The utility model relates to a semi-steel roll technical field specifically is a wear-resisting semi-steel roll of high compactness, the roller is located the inner ring, and fixedly connected with bracing piece between the lateral wall of roller and the inner wall of inner ring, form the heat dissipation chamber between roller and the inner ring, the roller collar cover is located on the inner ring, and roller collar and inner ring fixed connection, the both ends of roller are the rectangle installation piece that two symmetries of fixedly connected with set up respectively, and two rectangle installation pieces keep away from one side of roller and have seted up import and export respectively. The utility model discloses in, can absorb the heat that the collars produced through cooling coil, improve the cooling capacity of roll self, through setting up the exhaust hole, the aqueous vapor can be discharged by the exhaust hole, prevents that the too big roll that leads to of pressure from bursting in the inner ring, and then improves the wearability, improves machining efficiency, through setting up the inner ring, supports the inner ring by the bracing piece, and then can support the collars, makes this device structure more firm, and the pressure rolling processingquality is better.

Description

High-compactness wear-resistant semi-steel roller

Technical Field

The utility model relates to a semi-steel roll technical field specifically is a wear-resisting semi-steel roll of high compactness.

Background

The alloy semi-steel roll contains 1.5-2.3% of carbon, multiple alloy elements such as Cr, Ni, Mo, V and the like, generally contains about 6-10% of free carbide, has the characteristics of small hardness drop, high wear resistance, good toughness, remarkably reduced consumption, remarkably improved surface quality of sectional materials and rail beam materials and the like, is widely applied to replacing cast steel rolls and common low-alloy cast iron rolls, such as large-scale section steel rough rolls, section steel mill rough rolling and intermediate mill frames, hot-rolled strip steel continuous mill rough rolling and front working rolls, and is an important processing device for steel rolling production, and roll cooling is an important link in a steel rolling process.

The self cooling effect of current semisteel roll is poor, consequently can lead to the roll surface of semisteel roll to produce thermal stress because inside and outside difference in temperature is too big and destroy, causes the damage of semisteel roll, shortens life, influences machining efficiency, and adds man-hour, generally adopts from outside to spray water and cool down to the roll surface, waste time and manpower, and the cooling effect is not good, and secondly, the collars structure of semisteel roll is too simple, and wear resistance is poor, and toughness is not enough. Therefore, those skilled in the art have provided a high-compactness wear-resistant semisteel roll to solve the problems set forth in the background art described above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wear-resisting semisteel roll of high compactness to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a high-compactness wear-resistant semisteel roller comprises a roller shaft, a roller ring, two cover plates and an inner ring, wherein the roller shaft is positioned in the inner ring, a supporting rod is fixedly connected between the side wall of the roller shaft and the inner wall of the inner ring, a heat dissipation cavity is formed between the roller shaft and the inner ring, the roller ring is sleeved on the inner ring and is fixedly connected with the inner ring, two ends of the roller shaft are respectively and fixedly connected with two rectangular installation blocks which are symmetrically arranged, an inlet and an outlet are respectively formed in one side, away from the roller shaft, of the two rectangular installation blocks, one ends, close to the inlet and the outlet, respectively penetrate through the side wall of the roller ring and are communicated with the heat dissipation cavity, a cooling coil pipe is sleeved on the roller shaft in the heat dissipation cavity, the two ends of the cooling coil pipe are respectively communicated with the inlet and the outlet, the side wall of the cooling coil pipe is abutted to the inner wall of the inner, and the side wall of the cover plate is provided with an exhaust hole communicated with the heat dissipation cavity.

As a further aspect of the present invention: the roll collar comprises a wear-resistant layer, a high-temperature-resistant layer, a heat-absorbing layer and a waterproof layer from outside to inside in sequence, and the wear-resistant layer, the high-temperature-resistant layer, the heat-absorbing layer and the waterproof layer are connected in an extrusion mode and are adjacent to each other.

As a further aspect of the present invention: the roll collar and the inner ring are fixed by welding, and two ends of the supporting rod are respectively fixed with the inner ring and the roll shaft by welding.

As a further aspect of the present invention: the diameter length of the cover plate is matched with that of the roll collar.

As a further aspect of the present invention: the bracing piece is equidistant to encircle to set up on the roller, and the bracing piece is located between cooling coil's body gap.

As a further aspect of the present invention: the number of the fixing bolts is eight, and the fixing bolts are arranged on the cover plate in an encircling mode at equal intervals by taking the rotating center of the cover plate as the circle center.

Compared with the prior art, the beneficial effects of the utility model are that:

1. through setting up the cooling tube, cold water or coolant liquid flow in cooling coil are poured into to the import, can absorb the heat that the friction produced when the collars roll-in processing, discharge by the export, improve the cooling capacity of roll self, and then improve the wearability, improve machining efficiency.

2. Through set up the exhaust hole on the apron, the aqueous vapor that produces in the heat dissipation chamber can be discharged by the exhaust hole on the apron, prevents that the interior intra-annular pressure is too big to lead to the roll to burst, can dispel the heat by the exhaust hole better simultaneously, improves the heat-sinking capability of this device.

3. Through setting up the inner ring, support the inner ring by the bracing piece, and then can support the roller ring, make this device structure more firm, the rolling processingquality is better.

Drawings

FIG. 1 is a schematic perspective view of a high-compactness wear-resistant semisteel roll;

FIG. 2 is a schematic diagram of the internal structure of a high-compactness wear-resistant semisteel roller;

FIG. 3 is a schematic structural diagram of a roll collar in a high-compactness wear-resistant semisteel roll;

FIG. 4 is a schematic structural diagram of a cooling coil in a high-compactness wear-resistant semisteel roller.

In the figure: 1. a roll shaft; 2. a roll collar; 201. a wear layer; 202. a high temperature resistant layer; 203. a heat absorbing layer; 204. a waterproof layer; 3. a cover plate; 4. an inner ring; 5. a support bar; 6. a heat dissipation cavity; 7. a rectangular mounting block; 8. an inlet; 9. an outlet; 10. a cooling coil; 11. fixing the bolt; 12. and (4) exhausting holes.

Detailed Description

Referring to fig. 1-4, in the embodiment of the present invention, a high-compactness wear-resistant semisteel roll comprises a roll shaft 1, a roll collar 2, two cover plates 3 and an inner ring 4, wherein the roll shaft 1 is located in the inner ring 4, a support rod 5 is fixedly connected between the side wall of the roll shaft 1 and the inner wall of the inner ring 4 to play a role of a fixed support, a heat dissipation cavity 6 is formed between the roll shaft 1 and the inner ring 4, the roll collar 2 is sleeved on the inner ring 4, the roll collar 2 is fixedly connected with the inner ring 4, the roll shaft 1 rotates, the roll collar 2 rotates, two ends of the roll shaft 1 are respectively and fixedly connected with two symmetrically arranged rectangular mounting blocks 7, the rectangular mounting blocks 7 are inserted into a groove of a rolling mill, due to the characteristic of a rectangle, the rectangular mounting blocks 7 cannot rotate in the groove, the fixation is more firm, and an inlet 8 and an outlet 9 are respectively arranged on one side of the two rectangular mounting blocks, namely a liquid inlet and a water outlet, one ends of the inlets 8 and the outlets 9 which are close to each other respectively penetrate through the side wall of the roller ring 2 and are communicated with the heat dissipation cavity 6, a roller shaft 1 which is positioned in the heat dissipation cavity 6 is sleeved with a cooling coil 10, and the two ends of the cooling coil 10 are respectively communicated with the inlet 8 and the outlet 9, the two ends of the cooling coil 10 are welded and fixed with the roll shaft 1, the side wall of the cooling coil 10 is propped against the inner wall of the inner ring 4, so as to better absorb heat, the two cover plates 3 are respectively fixedly connected with the two ends of the inner ring 4 through the fixing bolts 11, the side wall of the cover plate 3 is provided with an exhaust hole 12 communicated with the heat dissipation cavity 6, and steam heat flow generated in the heat dissipation cavity 6 can be exhausted through the exhaust hole 12 on the cover plate 3, so that the roller is prevented from bursting due to overlarge pressure in the inner ring 4, meanwhile, the heat can be better dissipated through the exhaust hole 12, and the heat dissipation capability of the device is improved;

in fig. 3: the roll collar 2 sequentially comprises a wear-resistant layer 201, a high-temperature-resistant layer 202, a heat-absorbing layer 203 and a waterproof layer 204 from outside to inside, the wear-resistant layer 201, the high-temperature-resistant layer 202, the heat-absorbing layer 203 and the waterproof layer 204 are connected in an extrusion manner, the wear degree of the semi-steel roll can be reduced to a certain extent under the action of the wear-resistant layer 201, the cost in use can be reduced, the heat-resistant effect of the semi-steel roll can be enhanced under the effect of the high-temperature-resistant layer 202, the service life is prolonged, heat generated when the semi-steel roll is used can be absorbed under the effect of the heat-absorbing layer 203, the possibility of thermal stress damage can be reduced, and through the arrangement of the waterproof layer 204, the cooling water in the cooling coil 10 can be enabled to not corrode the roll collar 2 when the semi-steel roll works, and the maintenance cost of the semi-steel roll after long-time;

in fig. 2: the roll collar 2 and the inner ring 4 are fixed by welding, and two ends of the support rod 5 are respectively fixed with the inner ring 4 and the roll shaft 1 by welding, so that the connection is firmer and the support is more stable;

in fig. 1 and 2: the diameter length of the cover plate 3 is matched with that of the roll collar 2, and the cover plate 3 mainly protects two ends of the roll collar 2 to prevent abrasion;

in fig. 2: the supporting rods 5 are arranged on the roller shaft 1 in an equidistant surrounding mode, supporting points are distributed more uniformly, the supporting effect is better, the structure of the device is firmer, the rolling processing quality is better, and the supporting rods 5 are located between gaps of the cooling coil pipe 10, so that the installation of the cooling coil pipe 10 is not influenced;

in fig. 1: the quantity of fixing bolt 11 is eight, and fixing bolt 11 uses the rotation center of apron 3 to encircle the setting on apron 3 as the equidistant circle center, conveniently dismantles apron 3, can clear up the maintenance to the inside half steel roll.

The utility model discloses a theory of operation is: when using this device at that time, insert the recess of rolling mill into with rectangle installation piece 7 in the rolling mill, because the characteristic of rectangle, rectangle installation piece 7 is unable rotatory in the recess, it is fixed more firm, then, pour into cold water or coolant liquid into cooling coil 10 into by import 8, can with the roll collar 2 press the heat absorption of the processing friction production of working, discharge by export 9, improve the cooling capacity of roll self, and then improve the wearability, and the efficiency of processing is improved, the aqueous vapor heat flow that produces in the heat dissipation chamber 6 can be discharged by exhaust hole 12 on the apron 3, prevent that the too big roll that leads to in the inner ring 4 pressure from bursting, simultaneously can better dispel the heat by exhaust hole 12, improve the heat-sinking capability of this device, because bracing piece 5 supports inner ring 4, then can support roll collar 2, make this device structure more firm, the pressure rolling processingquality is better.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The high-compactness wear-resistant semisteel roller comprises a roller shaft (1), a roller ring (2), two cover plates (3) and an inner ring (4), and is characterized in that the roller shaft (1) is positioned in the inner ring (4), a support rod (5) is fixedly connected between the side wall of the roller shaft (1) and the inner wall of the inner ring (4), a heat dissipation cavity (6) is formed between the roller shaft (1) and the inner ring (4), the roller ring (2) is sleeved on the inner ring (4), the roller ring (2) is fixedly connected with the inner ring (4), two ends of the roller shaft (1) are respectively and fixedly connected with two symmetrical rectangular installation blocks (7), an inlet (8) and an outlet (9) are respectively formed in one side, far away from the roller shaft (1), of the two rectangular installation blocks (7), one end of the inlet (8) and one end of the outlet (9) respectively penetrate through the side wall of the roller ring (2) and are communicated with the heat dissipation cavity (6), be located heat dissipation chamber (6) the cover is equipped with cooling coil (10) on roller (1), and the both ends of cooling coil (10) set up with import (8) and export (9) intercommunication respectively, the lateral wall of cooling coil (10) offsets with the inner wall of inner ring (4) and sets up, two apron (3) are respectively through the both ends fixed connection of fixing bolt (11) with inner ring (4), and the exhaust hole (12) that set up with heat dissipation chamber (6) intercommunication are seted up to the lateral wall of apron (3).

2. The high-compactness wear-resistant semisteel roll according to claim 1, wherein the roll collar (2) comprises a wear-resistant layer (201), a high-temperature resistant layer (202), a heat absorbing layer (203) and a waterproof layer (204) from outside to inside in sequence, and the wear-resistant layer (201), the high-temperature resistant layer (202), the heat absorbing layer (203) and the waterproof layer (204) are connected in an extrusion manner.

3. The high-compactness wear-resistant semisteel roll is characterized in that the roll collar (2) and the inner ring (4) are fixed by welding, and two ends of the support rod (5) are respectively fixed by welding with the inner ring (4) and the roll shaft (1).

4. A high-compactness wear-resistant semisteel roll according to claim 1, characterized in that the diameter length of the cover plate (3) is matched with the diameter length of the end surface of the roll collar (2).

5. The high-compactness wear-resistant semisteel roll according to claim 1, is characterized in that the support rods (5) are arranged on the roll shaft (1) in an equidistant manner, and the support rods (5) are positioned between the gaps of the tube bodies of the cooling coil (10).

6. The high-compactness wear-resistant semisteel roll according to claim 1, characterized in that the number of the fixing bolts (11) is eight, and the fixing bolts (11) are circumferentially arranged on the cover plate (3) at equal intervals by taking the rotation center of the cover plate (3) as a circle center.