Control method of cooling liquid for cold rolling strip steel

A flow control and cold-rolled strip technology, applied in the direction of temperature control, etc., can solve the problems of strip thickness fluctuation, oil film and cooling deviation, and affect the strip thickness control accuracy, so as to reduce strip thickness fluctuation and improve control The effect of precision

Inactive Publication Date: 2008-01-23
ANGANG STEEL CO LTD
View PDF1 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the control degree of the control valve is calculated according to the ratio of the control given value of the control valve to its maximum flow, however, during debugging, we found that due to the influence of pipelines, nozzles and other factors, the control degree of the cooling con

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Y=0.2225X 2 -37.83X+1658 (50 / k≤X≤100); Y=0.588X (0

Embodiment 2

[0044] Y=0.238X 2 -40.7X+1790 (50 / k≤X≤100); Y=0.585X (0

Embodiment 3

[0046] Y=0.277X 2 -47.98X+2128 (50 / k≤X≤100); Y=0.577X (0

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

No PUM Login to view more

Abstract

The control method of cooling liquid for cold rolling strip steel includes: for the process computer to calculate the cooling liquid flow rate under the rated speed based on the friction and heat conductance in cold rolling; for the process computer to down send the cooling liquid flow rate during rolling; for the PLC to match based on the cooling liquid flow rate and the rolling speed and to apply the matched flow rate as the given value for controlling the valve; and for the PLC to calculate the control degree and opening of the valve, with the control degree being calculated based on the mathematical model. The present invention compensates the effect of pipeline, nozzle and other factors by means of the mathematical model to obtain the practical flow rate value and can raise the control precision of strip steel thickness.

Description

technical field [0001] The invention relates to a liquid flow control method, in particular to a cooling liquid flow control method for cold-rolled strip steel. Background technique [0002] Existing cold-rolled steel strip coolant (being emulsion) flow control method mainly comprises: calculate the coolant flow rate under rated speed by process computer according to the friction in the cold-rolled rolling and conduction calorific value; In the rolling mill, the process computer sends the coolant flow rate at the rated speed; PLC matches the cooling liquid flow rate at the rated speed issued by the process computer according to the rolling speed. The matching method is: [0003] F=F bas +(V-V min )÷(V set -V min )×F set [0004] F application traffic; [0005] f bas Basic traffic; [0006] f set Coolant flow at rated speed; [0007] V current rolling speed; [0008] V set Maximum rolling speed; [0009] V min Minimum rolling spe...

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
IPC IPC(8): B21B37/74
Inventor 刘军杨忠杰张哲俞晓峰徐大海
Owner ANGANG STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap