From the chemical composition, trace element, inoculation and thermal exchange of metal mold casting, the principle of chill formation and the effective methods for preventing chill were studied.
Carbofrax used as the chill material for casting may make casting obtain compact and wear-resistant structure.
碳化硅作为铸铁件激冷材料，可以使铸件获得致密而耐磨的组织。
3
The casting technique with top gating system, outer shaped iron chill, compound casting mold and core assembly molding was used for producing aluminum impeller on a large scale successfully.