Birmingham-based specialist precision component manufacturer Precision Micro has developed ultra-fine filter components for the medical market using high precision photochemical etching.
A medical device manufacturer approached Precision Micro to produce a microfilter by the photo etch process. The mesh had previously been manufactured by a laser process that was time consuming, prohibitively expensive and left burrs on the underside of the component.
The challenge was to pierce a 78mm diameter, 50-micron thick stainless steel disc with 136,187 holes, each hole being 100 microns in diameter on a staggered pitch of 200 microns. Precision Micro’s engineers were able to achieve a size tolerance for these features of just plus or minus 10 microns, pushing the precision limits of the photo chemical etching process.
According to Precision Micro, by etching all the holes at one time in a single process, the component was made burr free at an affordable price.
Precision Micro produces high precision bespoke components for OEMs and parts manufactured to customers’ own designs, to meet or exceed their individual performance requirements.