CRYOGENIC DEFLASHING PROCESS DETAILS
■ The Cryogenic Deflashing Machine from Cryonet, Surat is specially designed to deflash rubber and plastic parts. The process uses liquid nitrogen, barrel rotation and media(steel balls, ceramic balls or other suitable media) in varying combinations to remove the flash in a highly precise, economical and expedient manner.
■ Parts that have thin flash can be quickly and thoroughly cryogenically deflashed. This process is exceptionally good at removing the inner dimensional complex flash that can not be removed by any other method.
■ The moulded parts are placed in a perforated stainless-steel basket which rotates inside a well insulated blast chamber. Liquid nitrogen is injected into this chamber , with the basket and the moulded rubber parts being rotated so as to expose all parts to the blast media stream.
■ Liquid nitrogen lowers the temperature and freezes the rubber below its "GLASS TRANSITION" temperature to make it brittle. The blast wheel which is a high-speed (up to 7200 rpm) impeller directs and throws the plastic media at the tumbling parts into the rotating basket. Travelling at high-speed, these small media particles cleanly trim off the brittle flash leaving a high quality finished flash less molded part.
■ The machine separates reusable media from debris (flash and dust) and continues the deflashing process. Parts that have thin flash can be quickly and thoroughly cryogenically deflashed.
WHAT MATERIALS WE CAN DEFLASH ?
■ Most rubbers, plastics, and composites can be successfully and economically deflashed with cryogenic deflashing service.
■ Common material that can be deflashed include silicone rubber, FKM, EPDM, neoprene, fluorosilicones, ABS plastic, PEEK, Delrin, nylon, PP, HD/PEs, PE , zinc, and polycarbonate.
CRITERIA FOR CRYOGENIC DEFLASHING
■ Flash: Ideal Flash thickness should be around 0.1 mm. Thinner the flash , faster is the deflashing process with better finish and lesser consumption of liquid nitrogen, power and time
■ Tear and Trim Design: tear and trim design to be avoided. In case same can not be avoided, it is advisable to shift the flash further away from the components
■ Molding: Correct and consistent molding are the most important factor for successful deflashing. No machine can overcome / eliminate molding defects. Consistent unfinished input shall only result in consistent finished output
