Method for freezing automatic sequencing rolling pass of plate of moderate thickness

An automatic program and rolling pass technology, applied in metal rolling, metal rolling, rolling mill control devices, etc., can solve the problems of roll equipment safety hazards, bending, edge wave shape, etc., to improve the quality of the plate shape , Reduce the rolling pass, the best pass rolling effect

Inactive Publication Date: 2013-12-18
ANGANG STEEL CO LTD
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] According to the current situation, the changes in the last few passes directly affect the change of the roll gap of the steel plate during the rolling process, resulting in unreasonable reduction procedures for calculating the remaining passes, making

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
  • Method for freezing automatic sequencing rolling pass of plate of moderate thickness

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] The method for freezing the automatic program rolling pass of medium and heavy plates in the present invention is mainly to set a dialog box and input the frozen thickness value according to the best pass rule for rolling a steel billet with a thickness of ≤6.5mm in the past, so that the best pass rule Lock it down. The specific method is:

[0013] Add an effective value of frozen thickness, Frozenthickness, to the parameter Parameters of the Opeyator inputs function of the input terminal of the operation item in the secondary screen of the rolling mill;

[0014] If the thickness of the steel plate being rolled is less than the entered frozen thickness value, the total number of remaining passes of the steel plate will no longer change, but there are still pass calculations;

[0015] If there is an addition or subtraction pass change before the freezing pass, the frozen thickness value is stable at the frozen thickness of multiple passes, that is, "take more but not le...

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 provides a method for freezing automatic sequencing rolling pass of a plate of moderate thickness. The method comprises the steps that a dialog box is set, a frozen thickness value is input, and an optimum pass rule of conventional billets with the rolling thickness being smaller than or equal to 6.5mm is locked; a frozen thickness is added to parameters of an operator inputs function in a secondary picture of a rolling mill; if the thickness of the rolled steel plate is smaller than the input frozen thickness, the total of remaining passes of the steel plate is not changed any more; if pass change occurs before freezing, the frozen thickness is maintained at the frozen thickness when multiple passes exist; if when the frozen thickness is controlled in a relatively small range, increase or decrease of passes occurs before the current rolling pass thickness is greater than the frozen pass thickness, then the frozen thickness value is set in a larger range. The method can be used for effectively controlling the pass rule, and while the quality of the steel plate is improved, the rolling success rate of a steel plate with a small specification with the thickness being smaller than or equal to 6.5mm is improved from 73% to 93%.

Description

technical field [0001] The invention belongs to the technical field of automatic control, and in particular relates to a method for freezing automatic programmed rolling passes in the medium and thick plate rolling process. Background technique [0002] For medium and heavy plate mills when rolling thin-gauge steel plates, especially limit-gauge steel plates with a thickness of 6.5mm and below, during the rolling process, due to rapid temperature changes, the actual rolling force deviates from the pre-calculated rolling force Larger, this leads to frequent changes in the second pass procedure, and this change mainly occurs in the last 3 to 5 passes. In response to this situation, the post personnel control the rolling by adjusting the unit rolling force. [0003] According to the current situation, the changes in the last few passes directly affect the change of the roll gap of the steel plate during the rolling process, resulting in unreasonable reduction procedures for ca...

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): B21B37/28B21B37/24
Inventor 潘庆轩赵立军潘凯华姜世伟吕际洋侯英罗军王亮亮
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