CN201279524Y

CN201279524Y - Composite roll

Info

Publication number: CN201279524Y
Application number: CNU2008201608103U
Authority: CN
Inventors: 许亚南
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-07-29
Anticipated expiration: 2018-10-31

Abstract

The utility model relates to a replaceable roller which is applied to the metal processing of the metallurgy enterprise, and in particular to a disassemble composite roller, which is provided with a roller ring and a roller shaft, wherein, the roller shaft is provided with keys, and the roller ring is provided with a key slot, and the surface of the roller ring is provided with a working layer, and the roller shaft is provided with a positioning screw. Against for the problem of the prior composite roller that only can prevent the roller ring from playing in one direction and that relative rotation exists during the rolling process between the roller ring and the roller shaft, the disassemble composite roller can substitute the hammered steel roller and the centrifugal semi-steel roller, so that the production cost is reduced; and the Cr7C3 metal phase organization structure is adopted, so that the utilization effect can be improved by 50 percent, and the tensile strength of the working surface is more than or equal to 600 MPa, and the hardness is 60 to 80 HSD, thereby can prevent the roller ring from playing in the axial direction of the roller shaft.

Description

Composite roll

Technical field

The utility model relates to a kind of replaceable roll that is applied to the processing of smelter metal.

Background technology

Mostly existing roll is the integral structure of employing, the split type roll of by changeable type is to form with collars and roll shaft on the market, be to fix between collars and the roll shaft by the thrust step, the thrust step can only stop collars to a direction play, can occur between collars and the roll shaft relatively rotating in the operation of rolling.

The utility model content

The technical problems to be solved in the utility model is: can only stop collars problem in relative rotation can occur in the operation of rolling between a direction play and collars and roll shaft at existing composite roller, a kind of composite roller is provided.

In order to overcome the defective that exists in the background technology, the utility model solves the technical scheme that its technical problem adopts and is: a kind of dismountable composite roll, have collars and roll shaft, and key is arranged on the roll shaft, keyway is arranged on collars, there is working lining on the collars surface.

According to another embodiment of the present utility model, further be included in described roll shaft and be provided with dog screw.

The structure that collars in the utility model adopts is Cr ₇C ₃Institutional framework.

The utility model has solved the defective that exists in the background technology, alternative forged steel roll of the utility model and centrifugal ferrosteel roll, and production cost reduces, the Cr of employing ₇C ₃The metallographic layer of institutional framework can make result of use improve 50%, and the tensile strength of working face is more than or equal to 600MPa, and hardness can be avoided the axial generation play of collars at roll shaft in 60～80HSD (Shore hardness).

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

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

Fig. 2 is a cross section view of the present utility model.

Wherein: 1, collars, 2, roll shaft, 21, key, 211, screw.

The specific embodiment

With preferred embodiment the utility model is described in further detail in conjunction with the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model only is described in a schematic way, so it only show the formation relevant with the utility model.

The utility model as shown in Figure 1 has collars 1 and roll shaft 2, inwall at collars 1 has keyway, and the key 21 that matches with keyway is arranged on roll shaft 2, and the screw 211 that connects collars 1 is arranged on key 21, collars 1 outer surface is a working face, and the metallurgical structure that working face adopts is Cr ₇C ₃Institutional framework, Cr ₇C ₃Institutional framework has the high strength anti wearing and tearing, steel transportation amount is significantly improved, collars 1 reaches the fixing of relative position by key 21 and roll shaft 2, prevented to produce between collars 1 and the roll shaft 2 relative rolling, adopt screw 211 connecting keys 21 and collars 1, can avoid the axial generation play of collars 1 at roll shaft 2.

With above-mentioned foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must determine its technical scope according to the claim scope.

Claims

1, a kind of composite roll has collars and roll shaft, it is characterized in that: key is arranged on the roll shaft, keyway is arranged on collars, there is working lining on the collars surface.

2, composite roll as claimed in claim 1 is characterized in that: described working lining metallographic structure is Cr ₇C ₃Institutional framework.

3, composite roll as claimed in claim 1 is characterized in that: described roll shaft is provided with dog screw.