The two sides of the side plate of the mill inlet are inconsistent, resulting in the rolling instability, which leads to the tower shape, the roller wear is serious, especially the upper and lower rollers wear inconsistent, resulting in rolling instability, resulting in the tower shape, roll gap is inconsistent, the bending of the steel strips, resulting in coiling defects Side Guide Plate.Steel Coil
Side Guide plate openings through large or serious wear, side guide plate can not be pressed on both sides of the strip, the strip in the absence of a moderate side plate pressure, easy to the side of the operation, the forced alignment, will appear tower shape. Pinch rollers and roll rolls. As a result of serious wear or installation is not standard, the pinch roller seam is not parallel and help roll roll seam is inconsistent, strip from the large side of the roll seam, resulting in tower shape.Steel Coil
To calibrate regularly, to ensure that the clamping roller and the roll seam on both sides of the roller are consistent to prevent the strip from running. When calibrating the side guide, not only ensure the position of the side guide plate is accurate, but also to make the side plate on both sides of the same movement, to ensure that the movement synchronization; the detection accuracy Ensure that the roll and reel action sequence is normal to prevent the tower form from being produced. Reasonable coiling speed system and tension system. On the basis of the calculation of coiling theory, the production practice is carried out, and the speed value and the tension value are selected to meet the theory of coiling and the actual production.Steel Coil
Contusion defect is the silver-white scratches on the surface of the strip, which are clustered and flaky, and the head of contusion is more sharp. The contusion is caused by the sliding inside the roll and appears on the upper and lower surface of the strip.Steel Coil
The contusion defect mainly appears on the thin gauge strip (thickness ≤3.0mm), and the thickness of the strip is less. As a common surface quality defect, contusion is not only a great influence on customer's use, but also greatly reduces the yield of the product. Therefore, it is necessary to analyze the impact factors of contusion defects and take corresponding measures in production to avoid the occurrence of contusion defects.Steel Coil
