substrate Abrasive Finishing disc material impact

 This combination of three low-temperature ceramic agent performance comprehensive study results showed that: refractoriness of 775 ℃, flow of 110% ~ 130% linear expansion coefficient of 5.79 × 10-6 ℃ -1 V2 low temperature vitrified The integrated performance. By  abrasive paper sheet differential thermal analysis, the measurement temperature range V2 binding agent produced no apparent crystalline phase. Prepared with binding agents V2 vitrified CBN grinding after firing at 800 ℃ sample, flexural strength of abrasive optimum value 67.5 MPa. The disc was prepared in good sharp grinding, grinding fewer intermediate dressing, disc's durability. Scanning electron microscope (SEM) for CBN grinding grinding grinding surface  abrasive roll morphology were observed, indicating that the binding agent on the abrasive grains bonded firmly, homogeneous cross section.Using W14, W3.5 of B4C grains on sapphire substrate precision grinding rough grinding and Experimental Research. Comparative analysis of cast iron, synthetic and synthetic copper tin plate rough grinding surface roughness of the sapphire substrate and the abrasive surface uniformity, test results show that iron lapping  abrasive fibre disc plate sapphire substrate obtained macroscopic uniformity and flatness of the surface are better than synthetic copper plate and synthetic tin plate, the cast iron lapping plate machined face sapphire substrate peak value of the error is less than 5μm, centerline average surface roughness Ra <0.82gm. Precision grinding test results show that the copper plate and synthetic abrasive W3.5B4C sapphire substrate effectively improve the uniformity of the surface, obtained Ra <20nm, face 1.6μm peak error of less than a uniform surface, sapphire ultra-precision grinding and laid a good foundation.