Our fine grinding discs Aka-Piatto and Aka-Piatto+ are the optimal choice for fine grinding of all types of materials. They have a unique, wear compensating surface design that provides a very long lifetime and continuously high material removal. Furthermore, due to being on a thin, rigid steel plate, optimum planeness and edge retention are guaranteed. One Aka-Piatto can replace 200-300 pieces of regular grinding paper, which makes it very cost-effective for fine and ultrafine grinding. Aka-Piatto+ is the optimal choice for fine grinding of brittle samples like ceramics, cermets (e.g. Ceramic Matrix Composites) and sintered carbides. It is the ideal fine grinding disc for these materials due to a lower specific pressure. The disc has a higher diamond concentration than Aka-Piatto which provides the lower specific pressure. This gives a less aggressive abrasion and very long lifetime.
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Diamond Grinding Discs for Fine Grinding
Fine grinding has to remove the scratches and deformation from plane grinding and prepare the samples for polishing. The highest possible removal and the finest possible scratch pattern can be achieved with our Aka-Piatto diamond grinding discs. For fine grinding and ultra-fine grinding Aka-Piatto and Aka-Piatto+ in grit sizes 600, 1200 and 2400 (the last one is only available as Aka-Piatto) are recommended. They are available in the diameters 200 mm, 250 mm, 300 mm and 350 mm (the largest diameter only as Aka-Piatto).
Before the first use, the fine diamond grinding discs have to be opened with a dressing stick and dressed occasionally afterwards to ensure a continuously high removal rate.
For which material(s) is a diamond grinding disc optimal when fine grinding?
A diamond grinding disc, like Aka-Piatto works best for harder materials where the diamonds are performing best. For very soft materials like aluminum, copper and their alloys grinding papers are probably better, but for materials harder and less ductile than those an Aka-Piatto will work fine. For harder materials like steels and hardened steels the diamond grinding discs will work great, and for very hard materials like ceramics and sintered carbides there is no other possibility than diamond grinding.
Do I have to maintain my diamond grinding disc?
After the initial opening of the diamond grinding disc this depends very much on the material. Most harder materials will wear the disc, and due to the wear compensating design very evenly. But some softer, ductile materials might “clog” the disc, they will leave some residue on top of the disc. This will result in lower removal and longer grinding times. If you experience an increase in time then you should use the dressing stick to remove the residue and bring the disc back to the initial performance.