Advantages and disadvantages of composite mold and corrosion process
Advantages and disadvantages of composite mold
Compared with other cold stamping die structures, the composite die has the following advantages: (1) High production efficiency, and not limited by the accuracy of the shape and size of the strip, and sometimes waste corners can also be used for reproduction; (2) The coaxiality of the workpiece Better, flat surface, high dimensional accuracy.
Its disadvantages are: the processing and manufacturing of mold parts is difficult, the cost is high, and the convex and concave molds are easily limited by the minimum wall thickness, so some parts with small inner hole spacing and inner hole and edge spacing are not suitable for use.
Due to the obvious advantages of the composite mold itself, mold companies generally tend to choose the composite mold structure when conditions permit.
Corrosion process
The compound mold structure is welcomed by customers because of its high production efficiency and good dimensional accuracy of the workpiece; but at the same time, the usual processing methods are not satisfactory due to the limitation of the punching and concave molds by the blanking conditions. So a new type of processing method - corrosion process appeared, and the processed chess parts fully meet the technical requirements.
Processing route: blanking--turning (step)--scribing--pre-drilling aluminum wire holes--heat treatment--finishing--electric machining (shape and inner hole)--corrosion (leakage hole)-- cleaning.
After the composite mold parts are corroded, the wall of the leakage hole is smooth, the size is consistent, and the strength of the cutting edge is guaranteed to the maximum extent.
