Machining and assembling method of casting and rolling roller for aluminum alloy casting and rolling

An assembly method and casting roll technology, which is applied in the field of aluminum alloy casting and rolling, can solve problems such as roughness and unreasonable heating and heat preservation process, enterprise loss, and short service life of roll sleeves.

Active Publication Date: 2020-10-23
JIUQUAN IRON & STEEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the roller sleeve is scrapped due to reasons such as poor plate shape, roll sleeve burst, roll sleeve penetration crack, and serious defects in the middle of the roll sleeve, it will cause great losses to the enterprise, resulting in many of the above serious consequences. Among the influencing factors, the unscientific and unreasonable assembly process of the roller sleeve and the roller core is the main reason
[0004] Through the analysis and study of the casting roll sleeve assembly process of various aluminum proc

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Embodiment 1,

[0027] The processing and assembling method of casting rolls for aluminum alloy casting and rolling are implemented according to the following steps:

[0028] (1) Outer circle processing of the roll core: according to the requirements of the conventional roll core processing technology, the outer circle of the roll core is appropriately ground to the established target size, and the outer diameter D of the two ends of the roll core and the three parts of the middle part is measured. 1 , D 2 , D 3 , which are D 1 =729.72mm, D 2 =729.73mm, D 3 =729.75mm, the surface roughness of the outer circle of the roll core after processing is Ra0.6μm, and at the same time record the ambient temperature T when measuring the outer circle 1 , then T 1 =22℃;

[0029] (2) Calculate the average size of the outer diameter of the roll core: OD 1 , where OD 1 =(D 1 +D 2 +D 3 ) / 3=729.73mm, which means T 1 The average outer diameter of the roll core at temperature ...

Example Embodiment

[0034] Embodiment 2,

[0035] The assembly method of the roll sleeve for aluminum alloy casting and rolling is implemented according to the following steps:

[0036] (1) The outer circle of the roll core is processed, and the outer circle of the roll core is appropriately ground to the predetermined target size according to the requirements of the conventional roll core processing technology, and the outer diameter D of the two ends of the roll core and the three parts of the middle part is measured. 1 , D2 , D 3 , which are respectively D 1 =729.48mm, D 2 =729.49mm, D 3 =729.49mm, the surface roughness of the outer circle of the roll core after processing is Ra1.0μm, and at the same time record the ambient temperature T when measuring the outer circle 1 , then T 1 =6°C;

[0037] (2) Calculate the average size OD of the outer diameter of the roll core 1 , where OD 1 =(D 1 +D 2 +D 3 ) / 3=729.49mm, that is to get T 1 The average outer diameter of the roll core at temp...

Example Embodiment

[0042] Embodiment 3,

[0043] The assembly method of the roll sleeve for aluminum alloy casting and rolling is implemented according to the following steps:

[0044] (1) The outer circle of the roll core is processed, and the outer circle of the roll core is properly ground to the predetermined target size according to the requirements of the conventional roll core processing technology, and the outer diameter D of the two ends of the roll core and the three parts of the middle part is measured. 1 , D 2 , D 3 , which are respectively D 1 =839.62mm, D 2 =839.64mm, D 3 =839.63mm, the surface roughness of the outer circle of the roll core after processing is Ra0.81μm, and at the same time record the ambient temperature T when measuring the outer circle 1 , then T 1 =23℃;

[0045] (2) Calculate the average size OD of the outer diameter of the roll core 1 , where OD 1 =(D 1 +D 2 +D 3 ) / 3=839.63mm, which means T 1 The average outer diameter of the roll core at temperatu...

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PUM

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Abstract

The invention provides a machining and assembling method of casting and rolling roller for aluminum alloy casting and rolling. The method comprises the following steps that firstly, an outer circle ofa roller core is machined; secondly, the average outer diameter size of the roller core is calculated; thirdly, the inner diameter target size of a roller sleeve is determined; fourthly, an inner circle of the roller sleeve is machined; fifthly, heat assembling is carried out; and sixthly, the rolling roller is machined. According to the method, the outer diameter size of the steel roller core can be measured accurately, the final machining size of the inner diameter of the roller sleeve is calculated scientifically according to the environment temperature factor, and the situation that due to the fact that the roller core and the roller sleeve are in different environment temperatures, inaccuracy of interference magnitude control is caused, and the assembling quality is influenced can beeffectively avoided. The surface roughness is selected reasonably, the assembling precision is ensured, and the machining cost is controlled reasonably. In combination with the heat assembly technology, it can be ensured that after heat assembly, during the casting and rolling production, the roller sleeve does not slide to influence normal production, the roller sleeve can be protected against damage to the greatest extent, the service life is prolonged, and maximization of benefit is achieved.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy casting and rolling, and relates to a processing and assembling method of a casting roll for aluminum alloy casting and rolling. Background technique [0002] The casting roll is the main part of the continuous casting and rolling equipment for the production of aluminum and aluminum alloy slab coils. The casting roll is composed of a roll core and a roll sleeve. The matching method assembles the roller sleeve and the roller core together. The most important process parameter in the shrink-fitting process is the amount of interference, which is calculated and selected according to the material of the roller sleeve, the size of the transmitted torque, and the minimum thickness of the roller sleeve. If the interference is too small, there will be a large relative movement between the roll sleeve and the roll core during rolling, which will affect the stability of the rolling process and is e...

Claims

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Application Information

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IPC IPC(8): B21B27/00B23P23/04
CPCB21B27/00B23P23/04
Inventor 张开宝
Owner JIUQUAN IRON & STEEL GRP
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