Spiral blades When cold rolling mills are used to produce spiral blades, sometimes there will be a relatively loud squeaking sound which is very unpleasant, but some blades will have little or no sound. Generally speaking, it is mainly related to the material of cold-rolled blades. For example, the use of stainless steel strip generally produces an unpleasant squeaking sound. The probability of noise generated by pickled strip steel is much smaller than that of non-pickled strip steel. The same batch of chat sometimes produces noise, which may be caused by the distortion caused by the squeezing pitch and size, which is not suitable for processing. In addition, I have encountered a situation where blades of the same specification and model produced noise because the strip steel was corroded by rust.

Summary The use of spiral blade forming machine for strip steel cold-rolled spiral blades will produce squeaking noise during the blade production process due to the material of the strip, the content of the magazine, and the deformation of the cold-rolled blade.