What is cryogenic Deflashing?
Principle and Benifits
Cryogenic Deburring Technology Principle
Cryogenic deflashing technology—uses a system whereby rubber or plastic parts are placed in a perforated stainless-steel barrel located in the machine chamber, exposed to extremely cold temperatures (achieved with the use of liquid nitrogen, which is up to -130℃) and then tumbled in barrel and blasted with a polycarbonate media motivated by a high speed(up to 7000rpm/min) wheel. Because the burrs/flashes have a much thinner surface area comparing with their mass, burrs/flashes “FREEZE” very quickly and become brittle while the mass still not. The tumbling action—combined with the impact of the media—removes the burrs without damaging the part itself.
After the process is complete, parts are returned to room temperature and their properties returns too. The physical properties of your moulded rubber parts are not affected during the deflashing process.
Cryogenic deburring leaves a clean part—with no dust or other residue remaining—with nearly 100% burr removal.
Cryogenic trimming and deflashing are ideal for die cast metal parts, complex rubber parts, precision electrometric parts, medical parts and micro electronic parts due to its unique features of high productivity, high precision and lower cost.
Benefits of the Nitrogen Deflashing Machine
Cryogenic deflashing provides you various advantages over manual deflashing and other traditional deflashing methods.
1. Greater Productivity. Cryogenic deflashing trims parts in seconds.
2. Better Product Quality. The process maintains part integrity and critical tolerances.
3. The cost per part is generally well below any alternative technique, especially the manual deburring cost.
4. Since it is a batch process, the price per piece is far less as many more parts can be processed in each amount of time.
5. The process offers consistent results from part to part.
6. Cryogenic deflashing extends mold life. Rather than replace or repair a mold (which typically involves downtime and high cost), the parts can be deflashed. This is typical of parts molded at the end of their product lifetime.
7. Simple operation, highly automated, today’s cryogenic deflashing equipment is easy to use.
8. The process is computer controlled, therefore removing the human operator variable from the process.
9. Cryogenic deflashing is non-abrasive can ensure good process precision.
10. Environmentally Sound. The nitrogen gas can be vented safely to the atmosphere. In addition, cryogenic deflashing systems are typically enclosed to minimize noise and eco-friendly.
Application
Material Suitable for Cryogenic Deflashing Machine
Rubber NR NBR HNBR CR EPDM FKM ACM SILICONE
Precision Plastic PA+GF PC+GF PPS POM PU PBT PTFE PEEK TPU TPE TPR
Die-casting Alloy ZINC ALLOY MAG ALLOY
Small and Round shape without sharp points will be more suitable for the cryogenic de-flashing.
A wide range of molded materials can utilize cryogenic deflashing with proven results. These include:
· Nearly all the rubbers – (including neoprene & urethane)
· Liquid crystal polymer (LCP)
· Silicones
· Precision Plastics – (both thermoset & thermoplastic)
· Glass-filled nylons
· Zinc and Mag die-castings
Examples of applications that use cryogenic deflashing include:
· O-rings, gaskets and other rubber sealings
· Insulators and other electric / electronic components
· Valve stems, washers and fittings
· Short tubes and flexible boots
· Rubber absorbers and bumpers for automobile
· Face masks & goggles
· Mobile phone housing and intelligent watch strap
· Zinc and mag alloys like door lockers for auto cars
