Hot continuous rolling stainless steel strip steel tail portion loop control method

A technology of a stainless steel strip and a control method, applied in the field of hot-rolled strip steel, can solve problems such as the instability of looper tail flick, and achieve the effects of reducing tail flick phenomenon and product quality problems, ensuring movement and reducing influence.

Active Publication Date: 2013-09-04
SHANXI TAIGANG STAINLESS STEEL CO LTD
View PDF3 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: how to ensure the control of the tail of the finish rolling loop when rolling stainless steel, solve the unstable phenomenon of loop tail flicking between the finish rolling stands, and ensure the normal production and product quality of hot rolling

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
  • Hot continuous rolling stainless steel strip steel tail portion loop control method
  • Hot continuous rolling stainless steel strip steel tail portion loop control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] In this implementation example, the implementation process of the present invention is completely automatically implemented in a computer program.

[0032] Step 1, design the broken line, take the torque deviation value of the looper at the end of the strip, that is, the given torque-actual moment, as the X axis, and use the looper torque control coefficient value as the Y axis, establish a plane Cartesian coordinate system, and the broken line is a three-segment linear Equation, the coordinates of the starting point of the first segment are (△3, 1*10 -6 ), the end point coordinates are (△1, 4*10 -6 ), the starting point coordinates of the second segment are (△1, 4*10 -6 ), the end point coordinates are (△2, 4*10 -6 ), the coordinates of the starting point of the third segment are (△2, 4*10 -6 ), the end point coordinates are (△4, 8*10 -6 ), according to the torque deviation value of the specific strip end looper, linearly insert the value in the broken line, and us...

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 invention belongs to the field of hot rolling strip steel, and particularly relates to a hot continuous rolling stainless steel strip steel tail portion loop control method. Step 1, a broken line is designed, a rectangular plane coordinate system is built, a force moment deviation value of a trip steel tail portion loop, namely, the difference between the given moment and the actual moment, serves as the X axis of the rectangular plane coordinate system, and a loop moment control coefficient value serves as the Y axis of the rectangular plane coordinate system, and the broken line is a three-section linear equation; step2, the algorithm of a strip steel tail portion loop moment controller is that Yn=Yn-1 +Kpn*{[1+TA/TN]*deltaYEn-deltaYEn-1}; step 3, if being within the range between delta1 and delta2, the moment deviation value of the trip steel tail portion loop is calculated according to the step 1, and if being beyond the range between the delta1 and the delta2, the moment deviation value of the trip steel tail portion loop is calculated according to the broken line, maximum amplitude limiting and minimum amplitude limiting are also adopted, the maximum amplitude limiting value is 8*10<-6>, and the minimum amplitude limiting value is 1*10<-6>; step 4, the loop is controlled by a hydraulic loop servo valve according to the result, calculated through the step 3, of the loop moment control coefficient.

Description

technical field [0001] The invention belongs to the field of hot-rolled steel strips, in particular to a method for controlling the tail loop of hot-rolled stainless steel strips. Background technique [0002] With the increase of stainless steel development and slab weight, the actual temperature of the tail of the stainless steel strip is slightly lower than that of the head of the strip during finishing rolling, resulting in that the actual torque of the loop is greater than the given torque of the loop when the tail of the strip is turned into a small loop , causing the tail of the strip to drop early when the steel is dropped, resulting in quality problems such as roll marks on the surface of the stainless steel strip, which will lead to direct scrapping between the racks and bring great economic losses to our factory. Contents of the invention [0003] The technical problem to be solved by the present invention is: how to ensure the control of the tail of the finish ...

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): B21B37/72
Inventor 张世厚闫峥嵘
Owner SHANXI TAIGANG STAINLESS 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