CN216728809U

CN216728809U - Novel supporting roll for rolling mill

Info

Publication number: CN216728809U
Application number: CN202220168122.1U
Authority: CN
Inventors: 田照林
Original assignee: Luoyang Nine Heavy Machinery Ltd By Share Ltd
Current assignee: Luoyang Nine Heavy Machinery Ltd By Share Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-06-14
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a novel supporting roller for a rolling mill, which relates to the technical field of rolling mills and comprises a supporting roller body and a die steel sleeve, wherein the die steel sleeve is embedded and sleeved on the supporting roller body, the die steel sleeve is made of 5CrNiMo steel, and the thickness range of the die steel sleeve is 170-220 mm; has the advantages that: by the ingenious design of the die steel sleeve, the waste supporting roll can be repaired, so that the cost is greatly saved; the 5CrNiMo steel is adopted as the die steel sleeve, is alloy tool steel with low alloy element content, is also traditional hammer forging die steel, has good toughness, strength, wear resistance and hardenability, is convenient for repairing the supporting roller, and can bear large load.

Description

Novel supporting roll for rolling mill

Technical Field

The utility model relates to the technical field of rolling mills, in particular to a novel supporting roll for a rolling mill.

Background

The rolling mill is the core equipment in the metal processing field, and the backing roll of rolling mill is wherein indispensable partly, the rolling mill is at rolling in-process, because of long-time the use, can wear and tear the bearing roller axle, the backing roll that all has to produce because of wearing and tearing annually basically, the backing roll of these wearing and tearing need not recycle, the waste of resource has been caused, the cost is increased, and current backing roll can bear great pressure at the during operation, it is unreasonable to make backing roll pressure distribution, make the local fatigue accident that takes place of backing roll body easily.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provide a novel supporting roll for a rolling mill.

The utility model realizes the purpose through the following technical scheme:

the utility model provides a novel backup roll for rolling mill, includes backup roll body and mould steel bushing, it has the mould steel bushing to inlay the cover on the backup roll body, the mould steel bushing is 5CrNiMo steel, the thickness range of mould steel bushing is 170 and adds 220 mm.

Preferably, the supporting roll body includes supporting roll neck, supporting roll axle, fillet and roller end, the both ends symmetry integrated into one piece of supporting roll axle has the supporting roll neck, be equipped with the fillet between supporting roll neck and the supporting roll axle, the one end integrated into one piece that the fillet was kept away from to the supporting roll neck has the roller end.

Preferably, the supporting roll neck extends outwards to form five sections with successively smaller radius.

Preferably, the diameter ratio of the roller end to the supporting roller shaft is 3: 10.

preferably, the diameter of the backup roll neck is smaller than the diameter of the backup roll shaft.

Preferably, the outer surface of the steel sleeve of the mold is coated with a rust-proof oil layer.

Has the advantages that: through the ingenious design of the die steel sleeve, the damaged supporting roller can be repaired, so that the cost is greatly saved; 5CrNiMo steel is adopted as a die steel sleeve, and the 5CrNiMo steel is alloy tool steel with lower alloy element content and is also traditional hammer forging die steel, has good toughness, strength, wear resistance and hardenability, is convenient for repairing a supporting roller and can bear larger load; through the design that the supporting roll neck extends outwards and is five sections that the radius diminishes in proper order, can effectually solve pressure distribution unreasonable, avoid the supporting roll body wearing and tearing inhomogeneous, prevent the emergence of the local fatigue accident of supporting roll body.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a perspective view of a novel backup roll for a rolling mill in accordance with the present invention;

FIG. 2 is a perspective view of the support roll body of the support roll for a new rolling mill according to the present invention;

FIG. 3 is a perspective view of the die steel sleeve of the novel supporting roller for the rolling mill.

The reference numerals are explained below:

1. a support roll body; 101. round corners; 102. supporting the roll neck; 103. a supporting roller shaft; 104. a roll end; 2. and (5) a steel sleeve of the mold.

Detailed Description

The technical scheme of the utility model is further explained by combining the accompanying drawings as follows:

as shown in fig. 1-3, a novel supporting roll for a rolling mill comprises a supporting roll body 1 and a die steel sleeve 2, the supporting roll body 1 is sheathed with the die steel sleeve 2, the die steel sleeve 2 is 5CrNiMo steel, the 5CrNiMo steel is alloy tool steel with lower alloy element content, is also traditional hammer forging die tool steel, has good toughness, strength, wear resistance and hardenability, and the 5CrNiMo steel is low-carbon steel, is not only convenient for being sheathed with a supporting roll shaft 103 after being heated, but also can bear larger load, the thickness of the die steel sleeve 2 is 170mm, the supporting roll body 1 comprises a supporting roll neck 102, a supporting roll shaft 103, a fillet 101 and a roll end 104, supporting roll necks 102 are symmetrically and integrally formed at two ends of the supporting roll shaft 103, a fillet 101 is arranged between the supporting roll neck 102 and the supporting roll shaft 103, a roll end 104 is integrally formed at one end of the supporting roll neck 102 far away from the fillet 101, the supporting roll neck 102 extends outwards to form five sections with successively smaller radius, the pressure distribution that can solve backing roll body 1 is unreasonable, has avoided backing roll body 1 wearing and tearing inhomogeneous, prevents that backing roll body 1 from appearing the fatigue accident because of long-time work, and the diameter ratio of roller end 104 and bearing roller axle 103 is 3: 10, the diameter of the supporting roll neck 102 is smaller than that of the supporting roll shaft 103, and the outer surface of the die steel sleeve 2 is coated with an antirust oil layer, so that the practicability is high.

The working principle is as follows: when the supporting roll body 1 is damaged, the damaged supporting roll body 1 is cut until the surface of the supporting roll body 1 is smooth, then the die steel sleeve 2 is processed until the inner diameter of the die steel sleeve 2 and the supporting roll shaft 103 are in interference fit, then the die steel sleeve 2 is heated, the heated supporting roll shaft 103 is sleeved in an embedded mode, the supporting roll shaft 103 and the die steel sleeve 2 are fixed together in an embedded mode, then an anti-rust oil layer is coated on the die steel sleeve 2, the supporting roll shaft 103 can be repaired, and the damaged supporting roll body 1 can be used again after being sleeved with the die steel sleeve 2 in an embedded mode.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. The utility model provides a novel supporting roller for rolling mill, includes supporting roller body (1) and mould steel bushing (2), its characterized in that: the supporting roller body (1) is sleeved with a mold steel sleeve (2) in an inserted mode, the mold steel sleeve (2) is made of 5CrNiMo steel, and the thickness range of the mold steel sleeve (2) is 170-220 mm.

2. The novel supporting roll for the rolling mill as claimed in claim 1, characterized in that: supporting roller body (1) is including supporting roller neck (102), supporting roller axle (103), fillet (101) and roller end (104), the both ends symmetry integrated into one piece of supporting roller axle (103) has supporting roller neck (102), be equipped with fillet (101) between supporting roller neck (102) and supporting roller axle (103), one end integrated into one piece that fillet (101) were kept away from in supporting roller neck (102) has roller end (104).

3. A novel support roll for a rolling mill as claimed in claim 2, wherein: the supporting roll neck (102) extends outwards to form five sections with successively smaller radiuses.

4. A novel support roll for a rolling mill as claimed in claim 2, wherein: the diameter ratio of the roller end (104) to the supporting roller shaft (103) is 3: 10.

5. a novel support roll for a rolling mill as claimed in claim 2, wherein: the diameter of the back-up roll neck (102) is smaller than the diameter of the back-up roll shaft (103).

6. A novel support roll for a rolling mill as claimed in claim 1, wherein: and an antirust oil layer is coated on the outer surface of the die steel sleeve (2).