Cryogenic Deflashing & Treatment Services
Arrow Cryogenics provides a variety of specialized cryogenic treatment options. Our cryo deflashing processes can remove unwanted flash and burrs from molded products, while our other cryogenic treatment processes can improve the performance of metal parts by realigning the molecular structure, which can extend the working life of components by 100% or more. By design, our cryogenic deflashing and cryogenic treatment services deliver the intended results without risking damage to the parts themselves.
Why Use Cryogenic Treatment?
The benefits of cryogenic treatment for metals were discovered during World War II, when scientists noted that metals frozen to extremely low temperatures exhibited greater wear resistance. It was later discovered that processing at these extreme temps modifies the microstructure of the metal, creating a more consistent grain structure (a martensite, rather than austenite, crystal structure). Cryo treated materials maintain greater dimensional stability and can be machined to tighter tolerances, are impervious to creep (or “walk”), and are significantly less susceptible to stress fracturing. Additional benefits are outlined below.
Arrow Cryogenics provides fast, efficient, and safe cryo treatment services for a wide variety of metals and other materials. Using proven, carefully-controlled processes, we can effectively process parts and components of all shapes and sizes.
Cryogenic Service Options
Cryogenic deflashing and cryogenic deburring are two of the most effective methods of removing unwanted excess material from injection molded or machined parts. These processes are faster, cleaner, and more cost-effective that manual deflashing and deburring.
Cryogenic deflashing and cryogenic deburring both operate under the same principle. The workpiece is placed in a sealed chamber, cooled to an extremely low temperature, and then deflashed/deburred with non-abrasive media. As the flash or burrs are smaller and thinner than the rest of the part, they are easily cleared away in this frozen state, and the media that is used does not affect the finish or intended geometry of the part itself.
Cryogenic metal treatment increases the density of metal materials, making them stronger and more solid. This increases their performance, durability, and wear resistance while reducing friction and surface roughness, and thereby reduces part replacement costs and associated downtime.
Cryo treatment for extended wear involves placing the workpiece in a specially lined chamber and using liquid nitrogen to gradually lower the temperature to -300°F (-184°C). A slow cooling process is required to prevent damaging, distorting, or stressing the part. The part remains at the target temperature for an extended period, during which the material’s microstructure is permanently altered from a soft, austentic structure to a stronger, longer-lasting martensitic structure. After a prescribed period at low temperature, parts are slowly reheated—to as much as 300°F (149°C)—to temper the material and permanently align the modified grain structure.
The altered microstructure of cryo treated materials also helps to reduce the stresses imparted by machining and other fabrication and finishing processes. Because the entire part is affected, not just the surface layer, the material maintains greater dimensional stability throughout. This, in turn, allows parts to be machined to extremely tight tolerances without stress cracking/fracturing.
Cryogenic stress relief can also improve the dielectric properties of treated parts, improve their abrasion and impact resistance, and enhance toughness and wear resistance. Ultimately, cryo stress relief results in longer-lasting parts, and reduces the costs incurred and downtime caused by part failure.
Cryo Treatment for Metal, Rubber & More
Cryogenic treatment is effective for all manner of products. From de-flashing molded rubber parts to cryogenically treating steel drill bits, our in-house cryogenic services are a fast and cost-effective way to process your parts in bulk. We will adjust our processes to meet your end specifications.
Sample processing is available to determine if our cryogenic deflashing or other cryo treatment processes are right for your unique needs.