Source:http://www.jsjuyang.cn/ Release time:2019-12-29 Visits:
Overview Since the day when humans began to master casting technology, the modeling materials used have been based on silica sand.
2019-12-29By detecting the index of the coated sand, it can be judged whether the coated sand meets the characteristics of bending resistance, compression resistance and high temperature resistance.
2019-12-29How to make the quality of sand better in the process of producing coated sand, and want to make a successful coated sand,
2019-12-29The process of coated sand is to mechanically mix powdery thermosetting phenolic resin with raw sand and solidify when heated;
2019-12-29