WEBOct 11, 2002 · The performance and cost of Si 3 N 4 ball bearings mainly depend on the manufacture technology of the ceramic balls. Si 3 N 4 is a kind of brittle and hard material that is difficult to machine, the hardness of HIPSN being very high (2000 HV). The balls are commonly machined by abrasive methods. The principle of the abrasive process is .
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WhatsApp: +86 18838072829WEBMar 31, 2017 · Umehara N, Kato K. Magnetic fluid grinding of advanced ceramic balls. Wear, 1996, 200(1–2): 148–153. Article Google Scholar Umehara N, Kirtane T, Gerlick R, et al. A new apparatus for finishing large size/large batch silicon nitride (Si 3 N 4) balls for hybrid bearing appliions by magnetic float polishing (MFP). International Journal of ...
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WhatsApp: +86 18838072829WEBJan 1, 2003 · Grinding experiments were conducted using a grinding machine schematically shown in Fig. 1. Instead of the loose abrasive polishing [2], [3], diamondgrinding wheels were used, which has much higher grinding efficiency than the loose abrasive [4]. The ceramic balls were HIPed Si 3 N 4 of density g/cm 3 and 11 mm .
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