This method is not the cold-rolled forming method we have long seen. He achieved the strip steel modification by winding the mold. This method is generally called the winding molding method.

The winding molding method literally means a method of realizing production through winding. We first need to feed the strip steel needed for processing into the mold through a rotary feeding mechanism and then run the mold through the equipment. The operating speed should be suitable for the processed strip steel deformation, otherwise the strip will break and the required blade specifications will not be formed. .

Generally, spiral blades that are wound and formed generally use a 1.5-meter mold to produce a 1-meter-long spiral blade, but now a few companies have been able to produce continuous spiral blades through research and development to break the legend of 1-meter insurmountability.