Effect of Nano Ti 《C， N) on the Performance of Ceramic Bond for CBN Abrasives

In recent years, the low-temperature high-strength ceramic bond CBN abrasive tools have attracted more and more attention because of their advantages such as high hardness, good wear resistance, high thermal conductivity, high material removal rate and other traditional corundum abrasive tools. , Provides an ideal solution for the industry's requirements for high speed, high efficiency and high precision grinding. Chen Feixiao et al. ***ed Na2O-Al2O-SiO2-B2O3 system as the basic ceramic bond system to modify the ceramic bond for CBN ceramic abrasive tools. Nano-Ti (C, N) has the advantages of high temperature resistance, high strength, corrosion resistance, etc., and after adding nano-Ti (C, N), the ceramic bond can be prepared at a lower temperature CBN mill with higher mechanical properties With. So far, there are few reports about using nano-Ti (C, N) as an additive to improve the ceramic bond for CBN abrasives. In this experiment, 2%, 4%, 6% and 8% mass fractions of nano-Ti (C, N) were added to the glass frit to prepare a nano-ceramic bond. The experimental results can draw the following conclusions:

(1) The optimal firing temperature of the ceramic bond with Ti (C, N) added is 650 ° C. At 650 ° C, the binder has a low porosity and the glass is relatively uniform. (2) When the temperature is the same, with the increase of the nano-Ti (C, N) mass fraction, the volume density of the ceramic binder shows a decreasing trend, indicating that the pores gradually increase. That is, the addition of nano-Ti (C, N) increases the porosity of the ceramic binder. (3) The strength of the ceramic bond increases with the increase of the nano-Ti (C, N) mass fraction. When the nano-Ti (C, N) mass fraction is 6%, the flexural strength of the ceramic bond is the largest, 116.38 MPa, the fluidity is also the best, 193.33%, which is 22.9% more than the basic binder.