Research on New Core Sand Process of Scale and Side-frame
With the improvement and development of steering frame used for railroad that requires scale and side-frame to be preferable quality inside and outside, size precesion of roughness and general mechanic properties, espelially the fatigue property. Now Sodium silicate-bonded sand process in production, which study on the ester cured sodium silicate sand, ester cured alkaline phenolic resin sand and CO_2 Cured alkaline phenolic resin sand as their many process defects, and analyzing the influncing elements, having process analogy and offering the process referrence.