Chinese Standard: GB/T 12215-2019

Bauxite sand and flour for investment casting

全国铸造标准化技术委员会(SAC/TC 54)

本标准规定了熔模铸造用铝矾土砂、粉的术语和定义，分类、分级、分组及牌号，技术要求，试验方法，检验规则，包装和贮运。
本标准适用于熔模铸造制壳用铝矾土砂、粉。

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