Flanging is a plastic processing method of bending the material of the thin plate blank edge or the narrow band area of the prefabricated hole edge on the blank along a curve or a straight line.
Flanging is mainly used to strengthen the edge of the part, remove the trimming, and make a part on the part that is assembled and connected with other parts or a three-dimensional part with complex and special shape and reasonable space, and at the same time increase the rigidity of the part.
It can also be used as a means to control cracks or wrinkles during large sheet metal forming. Therefore, it is widely used in industrial sectors such as automobiles, aviation, aerospace, electronics and household appliances.