湿型铸钢的优点是铸型不需烘干,不刷涂料,成本低,生产周期短。因此得到越来越广泛的应用。但是,由于钢液对砂型剧烈的热作用,湿型铸钢的粘砂问题较为突出。从前我厂解决这个问题是在湿型砂中加入铁矿粉,铁矿粉包覆于石英砂周围,起到熔剂作用,熔剂本身与钢液作用形成一层熔渣,象油一样堵在砂粒间隙之中,使铸件表面不粘砂,但生产的铸件表面粗糙。为了获得较好的铸钢件表面质量,我厂在铸钢潮模砂中加入Al_2(SO_4)_3做防粘剂,生产出的铸件表面光洁,没有粘砂。型砂的烧结层薄,溃散性 Wet cast steel has the advantage of the mold without drying, no paint, low cost, short production cycle. So get more and more widely used. However, due to the intense heat effect of molten steel on the sand, the sticking sand problem of wet cast steel is more prominent. I used to solve this problem in the past is to add iron ore powder in wet sand, iron ore powder coated around the quartz sand, play a flux role, the flux itself and the molten steel to form a layer of slag, like oil stuck in the sand gap Among them, the surface of the casting is not sticky sand, but the surface of the castings produced is rough. In order to obtain better surface quality of steel castings, our factory added Al2 (SO4) _3 as anti-sticking agent in the sand mold of cast steel to produce a smooth casting surface and no sticky sand. Sand sintered layer thin, collapsibility