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Method for improving surface quality of stainless steel

A surface quality, stainless steel technology, applied in the field of steel rolling, can solve problems such as scratches, affecting product quality, failure shutdown, etc., to achieve the effect of ensuring normality, eliminating hidden dangers of scratch quality, and saving equipment failure processing time

Active Publication Date: 2014-12-10
SHANXI TAIGANG STAINLESS STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the high-pressure water is not sprayed for finishing descaling and descaling when rolling stainless steel, the falling and descaling pinch rolls are likely to cause scratches on the surface of the pinch rolls facing the stainless steel strip, affecting product quality and causing downtime

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Example 1: The steel grades that are not sprayed by the secondary computer are 400 series stainless steel and 300 series stainless steel; when rolling 400 series stainless steel, because the finishing rolling high-pressure water descaling does not spray water, the primary computer automatically judges the input The automatic control program of the descaling pinch roller not falling: the first-level computer controls the electromagnetic reversing valve, so that the descaling pinch roller is always in the raised position and does not touch the strip steel to ensure the surface quality of the 400 series stainless steel.

Embodiment 2

[0009] Example 2: The steel grades that are not sprayed by the secondary computer are 400 series stainless steel and 300 series stainless steel; when rolling 300 series stainless steel, because the finishing rolling high-pressure water descaling does not spray, the first-level computer automatically judges that it is used to remove the water. The automatic control program of the scale pinch roller not falling: the first-level computer controls the electromagnetic reversing valve, so that the descaling pinch roller is always in the raised position and does not touch the strip steel, ensuring the surface quality of the 300 series stainless steel.

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PUM

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Abstract

The invention relates to a method for improving the surface quality of stainless steel, and belongs to the field of steel rolling. The method is characterized by including the steps that whether high-pressure descaling water is sprayed or not is set by a second-level computer according to steel types; a first-level computer automatically judges according to the setting, when the first-level computer judges that the water is not sprayed, an automatic control program for lifting and falling of descaling clamping and conveying rollers is operated, the first-level computer controls an electromagnetic directional valve so that the descaling clamping and conveying rollers are always at the lifting positions without making contact with strip steel, and the surface quality of the rolled stainless steel is ensured. Lifting and falling of the descaling clamping and conveying rollers are controlled automatically according to the steel types, the potential quality hazard that descaling clamping and conveying roller equipment scratches the surface of the stainless strip steel is eliminated, and the time for handling equipment failures is saved; it is ensured that control actions of the descaling clamping and conveying roller equipment are normal, and the descaling problem and steel scrap faults caused by normal control are avoided.

Description

technical field [0001] The invention belongs to the field of steel rolling, and in particular relates to the automatic control of the finishing rolling area of ​​hot continuous strip steel. Background technique [0002] The high-pressure water descaling box and descaling pinch rolls are included in the equipment in the hot rolling and finishing area. Whether high-pressure water descaling is used or not depends on the process requirements. Whether the strip is descaled or not, the descaling pinch rollers must descend to clamp the strip. [0003] Since high-pressure water is not sprayed for finishing descaling and descaling when rolling stainless steel, falling descaling pinch rolls may easily cause scratches on the surface of the pinch rolls facing the stainless steel strip, affecting product quality and causing downtime. Contents of the invention [0004] The purpose of the invention is to avoid scratching the stainless steel surface by the descaling pinch roller and impr...

Claims

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Application Information

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IPC IPC(8): B21B37/00B21B45/06
Inventor 张世厚
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD