Punching stamps

Punching stamps must repeatedly punch a contour in a predetermined geometry into a sheet. As simple as this operation might sound, the task of designing the stamp is highly complex. It must not permit any adhesions on the surface, and the surface must also have good sliding properties. The cutting ability must be good and must be retained. Of even greater importance is the force used to withdraw the stamp from the sheet because this force imposes tensile forces on the blade. Here in particular, the material from the punching stamp must have good flexural strength in addition to good compressive strength. Few materials offer this combination. Individual ceramic materials have been used in this area for years.
 

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