Method for designing inner roller type curve of sleeve of variable crown (VC) roller

A roll and roll shape technology, applied in the field of roll shape curve design in VC roll sleeve, can solve the problems of double-sided corrugated plate shape defects of the strip at the exit of the rolling mill

Inactive Publication Date: 2015-04-08
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the actual roll shape reaches the attached Figure 4 , attached Figure 5 In the state shown, it will bring more serious double-sided corrugated defects to the strip at the exit of the rolling mill

Method used

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  • Method for designing inner roller type curve of sleeve of variable crown (VC) roller
  • Method for designing inner roller type curve of sleeve of variable crown (VC) roller
  • Method for designing inner roller type curve of sleeve of variable crown (VC) roller

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Experimental program
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Effect test

Embodiment 1

[0052] Attached Image 6 It is the general flow chart of the design method of the roller profile curve in the VC roll sleeve according to the present invention; Figure 7 It is a flow chart for calculating the parameters of the inner roll shape optimization curve in the present invention. Now take 7 groups of typical specification products as an example, with the help of attached Image 6 , Attached Figure 7 To describe the comprehensive optimization process of the roller shape in the sleeve and related effects.

[0053] First, in step 1, collect the equipment characteristic parameters of the VC rolling mill, mainly including: the diameter D of the work roll and the support roll w =510mm,D b =1400mm, original roll shape distribution value of work roll and support roll ΔD wi =0,ΔD bi =0, the length of work roll and support roll body L 1 =1650mm,L 2 =1620mm, the distance between the inner and outer bending cylinders of the work roll l 21 =2320mm,l 22 =3120mm, center moment of scre...

Embodiment 2

[0086] Attached Image 6 It is the general flow chart of the design method of the roller profile curve in the VC roll sleeve of the present invention; Figure 7 It is a flow chart for calculating the parameters of the inner roll shape optimization curve in the present invention. Now take 7 groups of typical specification products as an example, with the help of attached Image 6 , Attached Figure 7 To describe the comprehensive optimization process of the roller shape in the sleeve and related effects.

[0087] First of all, in step 1, the equipment characteristic parameters of the VC rolling mill are collected, mainly including: the diameter D of the work roll and the support roll w =510mm,D b =1400mm, original roll shape distribution value of work roll and support roll ΔD wi =0,ΔD bi =0, the length of work roll and support roll body L 1 =1650mm,L 2 =1620mm, the distance between the inner and outer bending cylinders of the work roll l 21 =2320mm,l 22 =3120mm, center moment of s...

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Abstract

The invention relates to a method for designing an inner roller type curve of a sleeve of a variable crown (VC) roller, and the method carries out a great amount of field tests and theoretical analysis and takes a full combination of characteristics of equipment and a process of the VC roller; and aims at problems that an oil pressure convex degree of the VC roller is eliminated by collapse displacement of the sleeve and a shape controlling effect of the roller is reduced when the VC roller rolls under a great rolling pressure, as well as a problem of a double-wave shape defect generated by a finished product strip steel, a computer design of an internal convex roller type of a VC roller sleeve is optimized, so that an inner wall of the sleeve is in local contact with the surface of a mandrel when the roller rolls under the great rolling pressure, thereby controlling the collapse displacement of the sleeve within an allowable range and inhibiting shape defects, such as double-wave; a shape controlling range of the VC roller is improved; and an appliation field of the VC roller is further widened.

Description

Technical field [0001] The invention belongs to the technical field of VC rolling mill production technology, and particularly relates to a method for designing a roll profile curve in a VC roll sleeve that is suitable for VC rolls to suppress collapse displacement. Background technique [0002] As attached figure 1 As shown, the VC roll is composed of five parts: rotary joint 1, mandrel 2, sleeve 3, oil cavity 4 and tunnel 5. During the rolling process, the outer shape of the sleeve can be adjusted by controlling the pressure of the hydraulic oil inside the VC roll oil chamber. When the oil pressure changes continuously, continuous roll crown changes will be obtained. By choosing different oil pressures, different roll crowns can be obtained to compensate for roll deflection and achieve shape control. At the same time, it is precisely because of the existence of the oil cavity 4 that in the rolling process, when subjected to the pressure between the rolls, the sleeve will not ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
Inventor 白振华李经洲马续创王瑞冯彬
Owner YANSHAN UNIV
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