Cryogenic deflashing is used to remove unwanted residual mold flash from newly molded or cast rubber and plastic parts. This die cast deflashing method utilizes cryogenic temperatures that cause the flash to become stiff or brittle and to break away cleanly, even from oddly shaped parts.
The use of cryogenic temperatures allows for precise removal of flash from materials including silicone, plastic, polymers, elastomers, rubber and aluminum die castings, all without degrading the parts or harming the finish. It is suitable for rubbers of various durometers and parts that have been injection molded, extrusion molded, or compression molded.
Deflashing machines and cryogenic temperatures are used to remove flash from a broad range of products, including:
- O-rings & gaskets
- Medical implants, surgical tools and devices
- Electronic connectors, switches, and bobbins
- Gears, washers and fittings
- Grommets and flexible boots
- Manifolds and valve blocks
Arrow Cryogenics has been offering cryogenic deflashing to numerous industries since 1983. Our expertise, along with a wide variety of cryogenic deflashing machines, has allowed us to customize equipment, invent processes and master the art of turning your precision components into high quality, finished parts. Contact us to learn more about the benefits of using cryogenic temperatures for rubber deflashing.
What Is the Cryogenic Deflashing Process?
Deflashing machines use liquid nitrogen to help the utilized part reach a low enough temperature where its material becomes brittle. Once the material reaches a brittle state, the cryogenic deflashing machines are used to tumble and blast the part with polycarbonate or other media. This results in quick, easy and controlled removal of any residual mold flash. Cryogenic deflashing machines can also be used to alter or provide a polished or textured finish to a part’s surface.
Advantages of Cryogenic Deflashing Over Manual Removal Methods
Almost every plastic or rubber molding method leaves some form of residual flashing on a product. This issue can be more common in silicones rubber or similar materials that have a high viscosity. Manual flash removal is one common method, but it can be time-consuming and lack the consistency required for medical devices and other precision molded components.
Using cryogenic temperatures for plastic deflashing is an efficient and highly effective method that provides several advantages, including:
- Computer controlled process provides higher accuracy than manual deburring
- High level of consistency
- Non-abrasive and will not damage finishes
- Lower cost than other plastic deflashing methods
- Maintains part integrity and critical tolerances
- Lower price per piece
- Extends mold life
Below are some before and after samples of parts that have been deflashed at Arrow Cryogenics. Contact us to request a sample processing for cryogenic deflashing or to discuss your flash removal requirements.