Drum washing plants are particularly suitable for the continuous and at random treatment of small and medium-sized pieces, such as screws, bolts and small metal pieces in general. The material is moved forward by the slow rotation (at variable speed) of a cylinder, which contains a spiral at preset pitch. During the advancement motion, parts undergo cycles of treatment. Spiral continuous and slow rotation allows the movement of the pieces and the consequent removal of grease or swarf and drying them perfectly. The loading operations can be either manual or automated through automatic loading devices.
Ceever realization of standard machines is put side by side with the production of special cochlea realized in base to the specific demands of the client, both as regards the cycles of treatment (phosphating, de-phosphating, phosphate-degreasing, etc.) and mechanical sizing and/or special applications for automation.