NanoSteel delivers EverShot peening alloy

PROVIDENCE – The NanoSteel Co., a manufacturer of nano-structured steel materials, announced the introduction last week of its EverShot ferrous micro-peening alloy, designed for exceptional durability.
Shot peening is the process of impacting a surface with metallic, glass or ceramic particles with high force, a process similar to sandblasting but which spreads the surface plastically rather than removing parts of the surface through abrasion.
NanoSteel’s new EverShot peening material combines high hardness with a low breakage rate, allowing the shot peening of parts to precision specifications, the company said.
“Compared to both ceramic and ferrous microshot media, EverShot enables the shot peening of parts to tighter dimensional requirements at significantly improved uptimes,” said Harald Lemke, NanoSteel’s vice president and general manager of powder metallurgy. “The media is ideal for the shot peening of small parts and parts with small radii or complex geometries such as gears, springs and threads.”
In a customer test conducted by NanoSteel’s development partner Superior Shot Peening in Houston, EverShot – with an average shot particle size of 83 microns – generated force equal to CW14 steel cut-wire shot while providing a more uniform level of compression, NanoSteel said.
“NanoSteel’s microshot is extremely durable and generates the most uniform level of sub-surface compressive stresses that I’ve seen from any media other than ultrasonic shot peening,” said Dan Spinner, Superior Shot Peening’s director of technology. “The high hardness of the NanoSteel ferrous micro shot results in a deeper impact than existing ferrous micro shots without additional workhardening.”
Citing competitive benchmarking, NanoSteel said an EverShot cut lasted up to 70 times longer than ceramic and nine times longer than other high-hardness ferrous microshot. The higher durability provides more consistent surface quality and a less frequent replacement rate while lowering process waste.