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

A technology of curve design and roll sleeve, applied in computing, special data processing applications, instruments, etc., can solve problems such as double-sided corrugated plate defects of strip at the exit of the rolling mill

Inactive Publication Date: 2012-12-12
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0053] First, in step 1, the equipment characteristic parameters of the VC mill are collected, mainly including: diameters of work rolls and backup rolls D w =510mm,D b =1400mm, original roll shape distribution value of work roll and backup roll ΔD wi =0,ΔD bi =0, work roll and backup roll body length L 1 =1650mm,L 2 =1620mm, cylinder distance between inner and outer bending rolls of work rolls l 21 =2320mm, l 22 =3120mm, press down the screw center moment l 1 =2720...

Embodiment 2

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

[0087] First, in step 1, the equipment characteristic parameters of the VC mill are collected, mainly including: diameters of work rolls and backup rolls D w =510mm,D b =1400mm, original roll shape distribution value of work roll and backup roll ΔD wi =0,ΔD bi =0, work roll and backup roll body length L 1 =1650mm,L 2 =1620mm, cylinder distance between inner and outer bending rolls of work rolls l 21 =2320mm,l 22 =3120mm, press down the screw center moment l 1 =2720m...

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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 in particular relates to a design method for the inner roll shape curve of the VC roll sleeve with the aim of suppressing the collapse displacement of the VC roll. Background technique [0002] as attached figure 1 As shown, the VC roll is composed of five parts including a rotary joint 1, a mandrel 2, a sleeve 3, an oil chamber 4 and a channel 5. During the rolling process, the outer shape of the sleeve can be adjusted by controlling the pressure of the hydraulic oil in the oil chamber of the VC roll. When the oil pressure changes continuously, a continuous change in the crown of the roll surface will be obtained. By selecting different oil pressures, different roll crowns can be obtained to compensate for roll deflection and achieve shape control. At the same time, due to the existence of the oil chamber 4, during the rolling process, when subjected to the p...

Claims

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Application Information

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Patent Type & Authority Applications(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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