Blast finishing for prosthetic implants
A
Guyson International product story
Edited by the Engineeringtalk editorial team
Mar 14, 2003
Two very exacting criteria come to the fore of the technical specification each and every time Guyson installs a Euroblast system for imparting a keyed surface on prosthetic implants.
Two very exacting criteria come to the fore of the technical specification each and every time Guyson installs a Euroblast system for imparting a keyed surface onprosthetic implants; zero contamination and precise surface finish.
The first part is taken care of with polyurethane coating of critical metal parts in the blast chamber and rubber lining of the cabinet walls to stop the abrasive nature of the blast media causing contamination.
The latter requirement for a precise surface finish is now achieved using the latest design sieve classifier fitted to a Guyson Euroblast 6.
Process control limits on surface finish are required because too fine a finish is as equally undesirable as a too coarse finish to the keyed surface prior to ceramic coating.
Maintaining a uniform size and shape of the blast media enables the achievement of a consistent component surface finish, this achieved by passing the used media over an electromechanical sieve classifier.
The sieve separates out smaller broken down media that if allowed to impact the component repeatedly would produce the undesirable fine finish.
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