ROC Mineral cast technology 

The technology for mounting and clamping devices
 
Mineral cast is a two-part-system, consisting of mineral particles and an epoxy casting resin as binding material. The main materials in the finished mineral cast are minerals with about 90 weight-percent. The epoxy casting resin consists of liquid resin and curing agent.



Mineral cast will be molded, by using a cold-cast-procedure at room temperature, into precise negative forms. The minerals will be a combination of different mineral sizes and the liquids, which will be intensively mixed together under a special procedure. After that, the mixture will be cast into the forms under vibration and a homogeneous structure is created. The hardening afterwards is an exothermic process and takes about 12 hours. The cast can then be put out of the forms and the forms can be prepared for the next process. A relevant advantage of this procedure is that the results are accurate to shape and measure. That’s why machine elements like thread inserts, plates, guidances and tubes for example can be placed exactly into the cast and don’t have to be reworked or finished after the shaping. Another advantage especially for the application and clamping device production are the 
good vibration damping the low weight (Tightness 2.3 kg/dm3) of the material and the various design 
possibilities. 

Subsuming can be noted that the mineral cast is having lots of advantages for the end customer like efficient use on machine centers (speed, tool wear, finish quality), short procurement time and interesting procurement prices. The specific material properties require an adjusted engineering according to each application. They enable flexible solutions, however, particularly in the fixture construction and therefore contribute to the economical use of the procedure.