Compound die: refers to the press in one stroke, the completion of blanking, punching and other processes of a mold structure.

Features: 1. Good coaxiality of workpiece, flat surface, high dimensional accuracy;2, high production efficiency, and not limited by the accuracy of the strip size, sometimes waste corner material can also be used for reproduction.

Because the composite die itself has some obvious advantages, so the mold enterprises in the case of allowing conditions, generally tend to choose the composite die structure.

Disadvantages: it is more difficult to process and manufacture the parts of the mould, the cost is higher, and the convex and concave die is easy to be limited by the minimum wall thickness, which makes some inner hole spacing, the lower part of the commercial kitchen accessories with smaller inner hole and edge spacing should not be used.

Progressive die: composed of several stations, each station in order to complete different processing, in a single stroke of the press to complete a series of different stamping processing.After a stroke is completed, by the lighter windshield punch feeder according to a fixed step will move the material forward, so in a pair of molds can be completed a number of procedures, generally punching, blanking, bending, cutting edge, stretching and so on.

Features: 1, progressive die is a multi-task sequence die, in a pair of molds, can include blanking, bending and stretching and other multiple processes, with high productivity;2. Safe operation of progressive die;3. Easy to automate;4, can use high-speed punch production;5. It can reduce punch press, site area, transportation and warehouse occupancy of semi-finished products.

Disadvantages: the parts with high size requirements are not suitable for using progressive die production.