Methods to improve the surface quality of stainless steel
A surface quality, stainless steel technology, applied in the field of steel rolling, can solve problems such as downtime due to failure, affecting product quality, scratches, etc., to achieve the effect of ensuring normality, eliminating hidden dangers of scratched quality, and saving equipment failure processing time
Active Publication Date: 2016-06-29
SHANXI TAIGANG STAINLESS STEEL CO LTD
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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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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0008] Embodiment 1: The grades of steel that are not sprayed with water by the secondary computer are 400 series stainless steel and 300 series stainless steel; The descaling pinch roller does not fall automatic control program: 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 to ensure the surface quality of 400 series stainless steel.
Embodiment 2
[0009] Embodiment 2: The grades of steel that are not sprayed with water by the secondary computer are 400 series stainless steel and 300 series stainless steel; Automatic control program for scale pinch rollers not falling: the first-level computer controls the electromagnetic reversing valve so that the descaling pinch rollers are always in the raised position and do not touch the strip steel to ensure the surface quality of 300 series stainless steel.
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The method for improving the surface quality of stainless steel belongs to the field of steel rolling. It is characterized in that the secondary computer sets whether to spray water with high-pressure water descaling according to the steel type; The scale pinch roller does not fall off the automatic control program, and 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 to ensure the surface quality of the rolled stainless steel. The invention realizes the automatic control of the lifting and lowering of the descaling pinch roller according to the steel type, eliminates the hidden danger of scratch quality caused by the descaling pinch roller equipment on the surface of the stainless steel strip, saves the equipment failure processing time; ensures the descaling pinch roller The equipment control action is normal, avoiding the descaling problem and scrap steel failure caused by normal control.
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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IPC IPC(8): B21B37/00B21B45/06
Inventor 张世厚
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD