前言我厂铸铁用湿型生产,用了一种耐火度低于正常要求的型砂,浇注出来的床身,大平板铸件,靠铸件表面的砂层,受高温液态合金的热作用,烧结成一层硬壳。当铸件落砂时,型砂脱壳而离开铸件。当用天车吊起大平板铸件时,大块砂壳因自重而落下,露出光洁表面的铸件,铸件表面似带银光,为了和其它面砂称呼有区别,故称为银光面砂。 Preface Our factory cast iron with wet production, with a refractory below the normal requirements of sand, poured out of the bed, large flat castings, castings by the surface of the sand, by the hot liquid alloy heat, sintered into a layer Hard shell. When the casting sand, the sand shelling and leaving the casting. When using a crane lifting large flat castings, the bulk of the sand falling down due to their own weight, revealing smooth surface castings, casting surface with silver, in order to be distinguished from other surface sand, so called silver glossy sand.