This batch of stainless steel slit rolls is made of 304/2B, with a thickness of 0.6mm and a width of 100mm. There are 10 strips in total, which are made of a 1219mm width stainless steel coil. After careful inspection, the scratches mentioned by the customer exist on the back of the steel coil, and the distribution is not continuous, but the scratches are very dense, much like the friction between the board surface and a hard plane. Consult the processing records and learn a very important piece of information. During the processing of the steel coil, in order to solve the problem of sticking the knife, a large amount of tape was pasted on the rubber ring, which caused excessive pressure on the slitting knife shaft, and the knife shaft was not synchronized with the front pinch roller, resulting in processing Stop readjusting multiple times. The cutter shaft and the pinch roller are not synchronized, the cutter shaft speed is slow, and the pinch roller speed is fast. The direct consequence is that the length of the steel coil between the cutter shaft and the pinch roller increases. There is a looper between the knife shaft and the conveying roller to buffer, and all the added steel coils are accumulated in the looper. Finally, due to excessive pushing of the steel coil, the sagging steel coil hits the bottom of the looper, and the steel coil is continuously transported, which causes friction between the steel coil and the bottom surface of the cement looper, causing a large number of scratches on the bottom surface of the steel coil. Due to the serious scratches, the scratched parts can only be scrapped. To deal with the knife, you can use a proper amount of tape, but it must not be too much, because too much tape on the rubber ring will cause excessive friction of the entire knife shaft, and the pressure distribution of the knife shaft itself will be uneven. It is easy to cause various quality problems. To solve the staining knife, you can generally use a splint to make a set of splints, which is generally a necessary supporting facility for slitting equipment.