After having pulled the crystal out, it is placed in the sawing machine, where the initial and the end cone are being cut out. Thereafter, the cylindrical part is cut-to-length, as requested. Diamond discs for peripheral sawing are used for cutting.
Bulgaria
A squaring machine with two blades for outside cutting is used for this operation. Capacity – 2000 kg/month. It produces rectangular ingots with a maximum diagonal of 200 mm.
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Depending on the customers’ orders, the crystals are being ground on the outside diameter of a diamond peripheral sawing disk. We have got three centre grinders with a total monthly capacity 2000 kg. Maximum ground diameter – Ф200 mm. Accuracy 0.03 mm. Surface roughness - Ra ˂ 0.25.
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We can facet blanks with a diameter up to150 mm, and also rectangular wafers. Facet dimension – up to 5 mm. Edge grinding accuracy 0,1 mm.
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Wafers with maximum dimensions 200x200 mm are being lapped. Capacity – 1000 kg/month. Surface roughness – ˂ Ra 0.1
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