The requirements for silica sol and refractorypowder for mold shell in face layer differ from that in back layer.
硅溶胶型壳的面层和背层对硅溶胶和耐火粉料的要求是不一样的。
2
The powder injection molding technology, features and application in materials such as refractory tungsten alloys and hard alloys are reviewed in this paper.
本文阐述了粉末注射成形技术及其特点，以及在难熔钨合金和硬质合金及其它材料中的应用。
3
The present removing ferromagnetic from powder of the refractory, raw material of the glass and material of the electric ceramics, generally adopts acid washing in industry.