Unlock instant, AI-driven research and patent intelligence for your innovation.

Roller technology optimization method under DCR unit large deformation condition and aiming to achieve stable rolling

A technology of process optimization and large deformation, applied in metal rolling, manufacturing tools, metal rolling, etc.

Inactive Publication Date: 2019-01-04
YANSHAN UNIV
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, looking at the relevant literature at home and abroad, there are few in-depth studies on the factors affecting the rolling stability under the condition of large deformation of the secondary cold rolling mill. The stability of the field has become the focus of on-site technical research

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Roller technology optimization method under DCR unit large deformation condition and aiming to achieve stable rolling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (a) Collect the main equipment and process parameters of the cold rolling mill, mainly including the following steps:

[0028] a1) Collect the roll process parameters of the cold rolling mill: the modulus of elasticity E=210GPa of the work roll, the Poisson's ratio ν=0.3 of the work roll;

[0029] a2) Collect the relevant rolling process parameters of the cold rolling mill, mainly including: the average deformation resistance K of the strip m =475MPa, yield strength σ s =500MPa, strip width B=908mm, incoming material thickness h 0 = 0.267mm, reduction rate ε = 49.7%, normal rolling speed V = 400m / min, rolling pressure setting value P = 3550kN, unit front tension is σ 1 =29MPa, the unit back tension is σ 0 =26MPa, front tension is T 1 =201MPa, back tension is T 0 =126MPa;

[0030] a3) Process lubrication system parameters mainly include: emulsion concentration c=5.6%, initial temperature t 0 =52°C, flow rate w=22.5L / min, dynamic viscosity of the emulsion η=0.023Pa...

Embodiment 2

[0045] (a) Collect the main equipment and process parameters of the cold rolling mill, mainly including the following steps:

[0046] a1) Collect the roll process parameters of the cold rolling mill: the modulus of elasticity E=210GPa of the work roll, the Poisson's ratio ν=0.3 of the work roll;

[0047] a2) Collect the relevant rolling process parameters of the cold rolling mill, mainly including: the average deformation resistance K of the strip m =460MPa, yield strength σ s =500MPa, strip width B=920mm, incoming material thickness h 0 = 0.3mm, reduction rate ε = 45%, normal rolling speed V = 400m / min, rolling pressure setting value P = 3600kN, unit front tension respectively σ 1 =25MPa, unit back tension σ 0 =20MPa, the front tension is T respectively 1 =200MPa, back tension T 0 =130MPa;

[0048] a3) Process lubrication system parameters mainly include: emulsion concentration c=5.6%, initial temperature t 0 =52°C, flow rate w=22.5L / min, dynamic viscosity of the emuls...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
yield strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

A roller technology optimization method under DCR unit large deformation condition and aiming to achieve stable rolling mainly comprises the following steps executed by a computer, specifically, (a) main equipment and technology parameters are collected; (b) the parameters and the intermediate process quantity are defined; (3) initialization is conducted, that is, k<R>=0; (4) the working roller radius R is calculated; (5) initialization is conducted, that is, k<Ra>=0; (6) the original roughness Ra<r0> is calculated; (7) the friction coefficient mu is conducted; (8) the rolling pressure P and the forward slip value S are conducted; (9) the friction coefficient mu is conducted; (10) the control objective function G2(Y) is conducted; (11) whether the inequation is right or not is judged; and(12) the optimal working roller radius R<y> and the optimal original surface roughness Ra<r0y> are output. According to the method, the working roller radius R<y> and the original surface roughness Ra<r0y> are finally obtained through optimization, the effect that the production process is stably operated can be ensured during secondary cold rolling unit large deformation strip rolling, the stripyield is greatly increased, and benefits are brought to an enterprise.

Description

technical field [0001] The invention belongs to the technical field of cold rolling, in particular to a method for optimizing roll process parameters in a secondary cold rolling process. Background technique [0002] The secondary cold rolling is to further reduce the thickness of the strip after the primary cold rolling and annealing, so as to reduce the thickness of the product and increase the hardness and strength of the material. In recent years, with the rapid development of tin-plated and chrome-plated strip industries, secondary cold rolling technology has been more and more widely used. At the same time, for the secondary cold rolling unit, in order to ensure the smooth progress of production and produce qualified products, maintaining rolling stability is the most basic problem in the entire rolling process. When the deformation of the DR material in the secondary cold rolling unit is large, the rolling pressure and the forward slip value are large, so it is neces...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00
Inventor 白振华雷彤张立更王亮忠
Owner YANSHAN UNIV