FAQ
Practical answers for initial media selection and sample evaluation across cryogenic deflashing, nylon blasting and moulded-part deburring.
Select media by considering the part material, flash thickness, equipment temperature, blast intensity and required surface finish. Confirm the process first, then narrow the test range by size, shape and wear performance.
There is no universal size independent of the part and machine. Fine features usually start with smaller media, while thicker flash may need more impact energy. Surface marks, media circulation and machine stability must be checked together.
Rubber flash is commonly embrittled in a liquid-nitrogen environment and removed with low-temperature, impact-resistant cryogenic media. The media must remove the flash without damaging sealing faces, fine lips or the body of the part.
Suitability depends on the polymer, flash location and the low-temperature toughness of the part. Cryogenic media can remove thin embrittled flash, while nylon or PA media are more commonly used for ambient blast deburring.
Nylon and PA media are abrasion-resistant, low-dust polymer blast media used for ambient deburring of bakelite, thermosets, glass-filled plastics and selected alloy parts. They are not a direct substitute for every liquid-nitrogen deflashing process.
Liquid nitrogen rapidly embrittles the flash, while blast media provide the mechanical impact. The media must retain effective strength and dimensional stability at low temperature, with size and shape selected for the part geometry.
There is no universal replacement interval. Assess size loss, dust, media consumption, longer cycle time and changes in yield, while also checking the machine separation and recovery systems.
Cryogenic deflashing is generally best for thin flash that embrittles before the part body. Thick gates, ductile connections and features near functional surfaces need separate validation and cannot always be solved by increasing blast intensity.
Share the part material, flash location, machine and current media so we can help define the next step.
