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Advanced Surface Refinement |
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Before and after GEMLUX® photos taken with atomic force microscopy. Left (before) is at 15x15 microns; right (after) is with vertical scale of 200 nanometers!
The micro-photographs above show a highly magnified top view which compares the roughness of conventionally passivated surface by nitric acid immersion with the GEMLUX® finished surface. The drastic reduction in surface roughness is quite apparent. GEMLUX® processing electrochemically erodes the roughness. The high spots or "peaks" are attacked more rapidly than the low spots or "valleys". This is crucial when a given dimension must be maintained while refining the surface roughness.
The other benefits of GEMLUX® processing such as deburring, brightness and passivation are achieved simultaneously. A profilometer which is used to measure the roughness of a surface gives a reading expressed in RMS (Root Measure Squared) or RA (Roughness Average). Normally, 0.0003"/0.0004" will be removed to lower the microfinish from 12 to 2 RA on stainless steel. Typically, the surface of machined parts have an RMS or RA reading which is out of blueprint tolerance. GEMLUX® processing can correct this problem while leaving the dimensions of the part within tolerance. [See specifications]. The smoother surface reduces particulate entrapment. Therefore impurities are restricted from clinging to the processed surface.
Manufacturers of surgical tools and implants often take advantage of the benefits of this process. Sealing surfaces for valves, fittings, gaskets or bearings are also improved. In vacuum systems, the surface quality directly affects the efficiency of the system. This processing replaces costly hand and mechanical polishing.
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