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Rolling speed optimization method aiming at profit control in tandem cold rolling process

A technology of rolling speed and optimization method, which is applied in the field of metallurgical cold rolling, can solve the problems of low efficiency and achieve the effect of improving production efficiency and reasonably controlling rolling speed

Active Publication Date: 2017-05-31
唐山市榕泽钢材加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the increased benefit due to the reduction of power consumption per ton of steel is lower than the reduced benefit due to the reduction of production capacity due to the artificial reduction of production capacity in order to reduce the power consumption per ton of steel in the tandem cold rolling mill, the invention provides a cold rolling mill Rolling speed optimization method aiming at benefit control in continuous rolling process

Method used

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  • Rolling speed optimization method aiming at profit control in tandem cold rolling process
  • Rolling speed optimization method aiming at profit control in tandem cold rolling process
  • Rolling speed optimization method aiming at profit control in tandem cold rolling process

Examples

Experimental program
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Effect test

Embodiment 1

[0043] case figure 1 The overall calculation block diagram of the rolling speed optimization method with the goal of benefit control in the cold tandem rolling process is shown. First, in step (a), field parameters are collected, including: the thickness h of the entrance and exit of the five racks i-1 , hi (mm) {(2.50, 1.85), (1.85, 1.16), (1.16, 0.82), (0.82, 0.56), (0.56, 0.45)}, five rack roll radius R i (mm) {265, 237, 249, 266, 264}, five rack motor efficiency η i {0.85, 0.84, 0.86, 0.85, 0.87}, strip density ρ=7850(kg / m 3 ), five racks emulsion flow rate Q i (L / min) {3050, 3450, 3500, 3600, 3900}, five rack strip width B i =1020(mm), Young's modulus E=210GPa, Poisson's ratio v=0.3, the average deformation resistance of five racks K mi (Mpa) {373, 475, 541, 576, 612}, tension T at the inlet and outlet of five racks i-1 , T i (Mpa) {(49, 160), (160, 170), (170, 170), (170, 180), (180, 69)}, the rolling tonnage Z of five stands after changing rolls i (t) {2228, 1940...

Embodiment 2

[0072] First, in step (a), field parameters are collected, including: five rack inlet and outlet thicknesses h i-1 ,h i (mm) {(1.82, 1.15), (1.15, 0.81), (0.81, 0.55), (0.55, 0.40), (0.40, 0.25)}, five rack roll radius R i (mm) {265, 250, 250, 250, 250}, motor efficiency η of five racks i {0.90, 0.89, 0.89, 0.85, 0.88}, strip density ρ=7850(kg / m 3 ), five racks emulsion flow rate Q i (L / min) {3000, 3400, 3600, 3800, 4200}, five rack strip width B i = 1800 (mm), Young's modulus E = 210GPa, Poisson's ratio v = 0.3, five racks average deformation resistance K mi (Mpa) {392, 485, 561, 596, 652}, tension T at the inlet and outlet of five racks i-1 , T i (Mpa) {(51, 176), (176, 176), (176, 150), (150, 176), (176, 68)}, the rolling tonnage Z of five stands after changing rolls i (t) {2028, 1830, 1750, 2120, 2450}, rolling kilometers L after the work roll change of five racks i (Km) {160, 150, 150, 160, 170}, the maximum rolling pressure P of five stands i max (t) {1500, 1500...

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Abstract

A rolling speed optimization method with benefit control as a target in the cold continuous rolling process mainly comprises the following steps that 1, field parameters are collected; 2, unit friction characteristic parameters are collected; 3, unit benefit parameters are collected; 4, relevant parameters are defined; 5, the outlet speed, the reduction rate, the gate absolute draught and the equivalent tension influence coefficient of an ith rack are calculated; 6, the friction coefficient of the ith rack is calculated; 7, the rolling force of the ith rack is calculated; 8, the working roll elastic flattening radius, the outer friction force influence coefficient, the forward slip valve and the rolling torque of the ith rack are calculated; 9, the slip factor of the ith rack is calculated; 10, the slip index of the ith rack is calculated; 11, the rolling power of the ith rack is calculated; 12, the total electricity consumption of all racks of a unit is calculated; 13, a unit time benefit control target function expression is constructed; and 14, the optimal rolling speed is output. The reasonable target value for rolling speed control is set, enterprise cost is effectively reduced, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the field of metallurgical cold rolling, and in particular relates to a rolling speed optimization method in the continuous cold rolling process. Background technique [0002] In recent years, due to the huge demand of household appliances, automobiles, electronics, aerospace and other industries, the cold-rolled strip production industry at home and abroad has achieved rapid development. In the past, in the production process of cold-rolled strips, the focus of on-site attention was mainly on the control of quality indicators such as shape, thickness, and surface defects. However, with the increasingly fierce competition in the steel industry and the decline in the overall profit margin of the steel industry, cost control in the production process of cold-rolled strips has been placed in an equally important position as quality control. Because for iron and steel enterprises, no matter how high the product quality is under th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/46
CPCB21B37/46B21B2275/06
Inventor 华长春白振华钱承杜江城郉雨李柏阳赵伟泉王松尧
Owner 唐山市榕泽钢材加工有限公司
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