Size measurement of ceramic substrate based on three level edge gradation model spatial moment;

In this study,SrTiO3 based ceramic substrate for electroluminescence with high dielectric constant and low dielectric loss was preprared.

Under contented the used intensity,the anorthite ceramic substrate which prepared with pyrophyllite at low-sintering temperature has small dielectric constant,good dielectric property which compared with common aluminum substrate,the anorthite ceramic substrate has light bulk density,which is advantage to reduc.

Cutting tests of rough-milling the engine casing with ceramic inserts are carried out, the cutting performance of ceramic inserts to machine nickel-base high temperature alloys is studied, the cutting parameters and the programmed tool-path are optimized, and the chip form in high-speed and dry cutting is analyzed.

A design scheme of the CNC belt grinder based on the turning milling center is presented by which the high efficiency and low cost NC machining for profiles of ceramic inserts can be realized by means of the polar coordinate interpolation function of FANUC OTC NC system and the belt grinding technology.

The main procedures of GPS+HIP processing technology to manufacture Al 2O 3 based ceramic inserts, including mixing powders, pressing green blanks, expelling glue, gas pressure sintering(GPS), hot isostatic pressing(HIP) treatment and grinding of inserts are introduced.