Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.

本分析研究了砂在铸型中的成型条件及光洁内表面的形成机理，并对比研究了膜和自硬砂在铸型内表面形成均匀砂层的可行性。

Shell carbon black can be used to modify furane resin for significantly enhancing its electrostatic resistance and impact resistance,so that it is of greater suitability value.

采用谢尔炭黑改性脂，能显著提高其抗静电、抗冲击性能，具有较大实用价值。