Automatic Deflashing Machine for Precision Rubber and Plastic Parts Deburring Process
Automatic Deflashing Machine for Precision Rubber and Plastic Parts Deburring Process
Cryogenic deflashing is a deflashing process that uses a system whereby parts are placed in a chamber, exposed to extremely cold temperatures (achieved with the use of liquid nitrogen) and then tumbled and blasted with a polycarbonate media. Because the burrs have a high surface area relative to their mass, they “freeze” very quickly and become brittle. The tumbling action—combined with the impact of the media—removes the burrs without damaging the part itself.
Cryogenic deflashing is the preferred process when removing excess material from oddly shaped, custom molded products.
Cryogenic Deburring Process
Parts are loaded into a parts basket. A cryogen, such as liquid nitrogen, is used to cool the workpieces; once cooled they are tumbled and blasted with media pellets, ranging size from 0.006 to 0.080 inches (0.15 to 2.03 mm). In some instances, cryogenic deflashing does not utilize a blasting action, relying instead only on the tumbling of the parts to remove flash on the outer edges.
Cryogenic Trimming Technology Advantages
Cryogenic deflashing provides various advantages over manual deflashing and other traditional deflashing methods.
The process maintains part integrity and critical tolerances.
Since it is a batch process, the price per piece is far less as many more parts can be processed in a given amount of time.
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.
The process is computer controlled, therefore removing the human operator variable from the process.
The process offers consistent results from lot to lot.
Cryogenic deflashing is non-abrasive.
The cost per part is generally well below any alternative technique.
Applications of Nitrogen Deflashing Machine
A wide range of molded materials can utilize cryogenic deflashing with proven results. These include:
Silicones
Plastics – (both thermoset & thermoplastic)
Rubbers – (including neoprene & urethane)
Liquid crystal polymer (LCP)
Glass-filled nylons
Aluminum zinc die cast
Examples of applications that use cryogenic deflashing include:
O-rings & gaskets
Catheters and other in-vitro medical
Insulators and other electric / electronic
Valve stems, washers and fittings
Tubes and flexible boots
Face masks & goggles
Today, many molding operations are using cryogenic deflashing instead of rebuilding or repairing molds on products that are approaching their end-of-life. It is often more prudent and economical to add a few cents of production cost for a part than invest in a new molding tool that can cost hundreds of thousands of dollars and has a limited service life due to declining production forecasts.
In other cases, cryogenic deflashing has proven to be an enabling technology, permitting the economical manufacture of high quality, high precision parts fabricated with cutting edge materials and compounds.
NANJING PEGE TECHNO MACHINE CO.,LTD IS A LEADING CRYOGENIC DEFLASHING MACHINE SUPPLIER&MANUFACTURER IN THE WORLD.
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