Die for rolling flange

　　Roll the flange is a bar of continuous deformation along its length using an open coil flange forging. It is commonly used to work with a piece of raw material to the proper thickness. Once the appropriate thickness of the appropriate width is achieved through the gradual realization of. The process of gradually concentrated materials used concave mold. The process is called the edge, because the coil is usually carried out on both ends of the workpiece. Caulking is a similar process, forging die thin part of the convex shape of the rolled flange. These processes are ready for the forging process of the workpiece to be further rolled.

　　In this process, there are some drawbacks that most of the workpiece from the contact with the mold is such a period of time. Operation is a time consuming process for the number and length of steps. Rolled flange workpiece will be cooled faster, because the mold and the workpiece contact, heat transfer to promote much more than the surrounding atmosphere. With the cooling of the workpiece, the rolled flange becomes stronger and less ductile, which may cause cracking if the deformation is still continuing. Thus the heating of the mold is usually used to reduce heat loss, promote surface flow, so that production details and tolerances.