Process optimization method improving rolling and threading of ultrathin strip steel

A process optimization, strip steel technology, applied in the direction of manufacturing tools, metal processing equipment, metal rolling, etc., can solve the difficulty of high-speed production in the acid rolling process of ultra-thin strip steel, affect the output, quality and efficiency of the unit, and stop the stacking of steel in the production line To improve the stability of coiling and threading, optimize the air purge pressure, and ensure the effect of coiling

Active Publication Date: 2015-01-07
SHOUGANG JINGTANG IRON & STEEL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the existing process system, it is difficult to achieve stable and reliable high-speed production in the acid rolling process of ultra-thin strip steel, which seriously affects the output, quality and efficiency of the unit, and even causes the production line to stop stacking steel, causing serious economic losses

Method used

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  • Process optimization method improving rolling and threading of ultrathin strip steel
  • Process optimization method improving rolling and threading of ultrathin strip steel
  • Process optimization method improving rolling and threading of ultrathin strip steel

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Embodiment 1

[0015] see figure 1 , an embodiment of the present invention provides a method for improving the process optimization of ultra-thin steel strip taking and threading, including

[0016] A process optimization method for improving the taking and threading of ultra-thin strip steel, characterized in that it includes:

[0017] Step 110: Modify the strip shape at the exit of the strip during the pickling rolling process to ensure that the strip exits at the strip exit as Zhonglang IU;

[0018] Step 120: Adjust the position of the pinch roll at the exit of the rolling mill, and perform offset compensation;

[0019] Step 130: Adjust the working pressure of the pinch roller, and increase the working pressure of the pinch roller;

[0020] Step 140: optimizing the air purge pressure at the exit of the rolling mill to reduce the frictional pressure between the strip steel and the guide plate during the strip threading process;

[0021] Step 150: Modify the physical structure of the st...

Embodiment 2

[0036] In order to introduce the embodiment of the present invention more clearly, the following will introduce it from the specific examples of the embodiment of the present invention.

[0037] When using the present invention to improve the process optimization method of ultra-thin strip steel taking and threading, when rolling ultra-thin strip steel, the plate shape during shearing is adjusted to 15IU of medium wave: the bending force of the work roll of the last stand is 18KN / chock, the bending force of the middle roll of the last stand is 20KN / chock, the shape of the strip is manually adjusted when the weld seam enters the rolling mill, the shape of the strip is detected by the shape detector, and the signal is fed back to the last stand, and the steel force of the last stand is Adjust and increase the bending force until the IU value of the middle wave is 15IU.

[0038] Move the upper roller of the pinch roller 2mm toward the entrance to ensure that the head of the stri...

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Abstract

The invention discloses a process optimization method improving rolling and threading of ultrathin strip steel and belongs to the technical field of steel rolling. The method comprises correcting the outlet strip shape of the strip steel during an acid rolling process; guaranteeing that a strip steel outlet is in the strip shape of intermediate wave IU (i-unit); adjusting the position of the pinch rolls of a rolling mill outlet for deviation compensation; adjusting the working pressure of the pinch rolls to increase the working pressure of the pinch rolls; optimizing the air blowing pressure of the rolling mill outlet and reducing the friction pressure between the stripe steel and a guide plate during a threading process; correcting the physical structure of the threading guide plate of the rolling mill outlet to reduce the friction force during the threading process; optimizing the leading rate and the speed of rolling mill outlet equipment to guarantee rolling. The process optimization method improving rolling and threading of the ultrathin strip steel effectively reduces the possibility and accidents of rolling and threading stacking of the ultrathin strip steel at the acid rolling outlet, and effectively improves the rolling and threading stability of the ultrathin strip steel at the acid rolling outlet.

Description

technical field [0001] The invention relates to the technical field of steel rolling, in particular to a process optimization method for improving ultra-thin strip steel taking and threading. Background technique [0002] The thinnest steel strip produced by acid rolling is 0.15mm, which is the thinnest steel strip rolled by the cold tandem mill in the world. However, when the strip steel with a thickness of 0.15mm to 0.18mm is produced in batches, the flying shear at the exit of the rolling mill cannot automatically pass forward after being cut. Into the coiler mandrel, the steel is piled up at this position before the flying shear and behind the pinch roller before shearing, so that the strip steel cannot pass smoothly into the coiler mandrel. Therefore, in the production of ultra-thin strip steel, threading after cutting is an important factor restricting the smooth production of the production line. Under the existing process system, it is difficult to achieve stable an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B15/00B21B39/14B21C47/02B21C47/34
Inventor 唐伟令狐克志张良于孟齐海峰文杰杨洪凯王永强王少飞昝现亮刘鸿明万军韩法沈福磊于超超李飞崔阳徐海卫
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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