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铝钒土耐火材料具有良好的高温特性。用铝钒土材料筑的坩埚,与目前国内精铸生产中常用的各种坩埚相比,具有价格便宜、使用寿命长、元素烧损少、钢水质量高等特点,适应多钢种熔炼。我国铝钒土矿分布广,储量大,使用铝钒土耐火材料很适合我国国情。熔模精密铸造生产,对耐火材料的要求主要是耐火度高,高温时的化学稳定性好。前几年,我们采用铝钒土粉,铝钒土砂作为制壳的加固层涂料和加
Bauxite refractory material has good high temperature properties. The crucible built with bauxite material has the advantages of low price, long service life, less burning of elements and higher quality of molten steel compared with various crucibles commonly used in the current domestic production of precision casting, and is suitable for melting of many types of steel. China’s bauxite is widely distributed and reserves are large. The use of bauxite refractory is suitable for China’s national conditions. Investment casting precision casting, the refractory requirements are mainly refractory high temperature chemical stability. A few years ago, we use bauxite powder, bauxite sand as the shell of the reinforced layer coating and add