Controlling the finish during beads processing
During the ball manufacturing process from tantalum wire, the surface roughness may be affected by a number of parameters during processing, including: exact equipment settings, timing, the type and concentration of the grinding/polishing media, lubrication, etc. Variations in the surface finish after a process step will therefore occur from batch to batch. For a well-controlled ball manufacturing process, the variations in the surface roughness will normally be less than illustrated by balls 1 and 2 above. The common way to reduce the surface roughness is to polish for a longer time and/or add additional polishing steps in the processing. More processing will in turn increase the costs of production.
Cost optimized processing
The optimum surface quality is a trade-off between cost and product performance. To help our customers, X-medics has introduced 2 surface qualities: a standard-polished and a super-polished. The standard polished beads undergo a single polishing step during bead processing and is a cost optimised option suitable for most applications. The super polished beads are a high-end option which undergo several final polishing steps after the grinding/lapping operation, and may be used where the surface roughness of the beads are of importance (e.g. automated processing).
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