硬ぜい材料の超仕上げに関する研究 (第2報)

Abstract

The superfinishing process of ferrite and soda glass was investigated experimentally. In this experiment, the stock removal, the superfinishing resistance and the surface roughness were measured.The main results of experiments are as follows.1) Under light loads the shape of scratched traces on ferrite and soda glass is similar to that on metal.2) Silicon carbide wheels are more suitable for grinding of ferrite and soda glass than aluminum oxide wheels.3) The superfinishing resistance of ferrite and soda glass is expressed as the sum of two terms, ploughing and frictional. The ploughing force is proportional to the stock removal. Under the conditions used, the experimental constant C' of ferrite and soda glass is about 0.4 and 3 respectively, where C' is equivalent to the coefficient of piling-up in metal superfinishing.4) The value of surface roughness of ferrite and soda glass roughly superfinished is about 1μ Hmax and the value finely superfinished under about 1μ Hmax.5) The mean value of surface roughness is proportional to (M/N1/2) 2/3, where M is the stock removal per unit area and N the load per unit area.6) Superfinishing process of ferrite and soda glass is performed successfully in place of ordinary lapping process.