铸件粘砂是一种常见的铸造缺陷,它严重影响了铸件表面质量,给铸件清理、机械加工、产品油漆增加了困难,甚至使铸件无法清理而报废。我厂多年生产BA型离心水泵,品种多达二十余种。铸造用砂是本地所产的2N—3N粘土砂,不宜作煤粉砂原砂。故对表面质量要求较高的泵壳,轴承体,密封盖,底盘等另件,一直沿用传统的湿型烘干浇注,不但成本高,而且劳动强度大,生产周期长,易产生毛刺飞 Casting sticky sand is a common casting defects, which seriously affect the quality of the castings surface, to castings cleaning, machining, paint products increased difficulties, and even castings can not be cleaned and scrapped. I BA plant for many years production of centrifugal pumps, up to more than 20 kinds of species. Casting sand is locally produced 2N-3N clay sand, not suitable for coal silt sand. Therefore, the surface quality of the pump casing, bearing body, sealing cover, chassis and other pieces, has been using the traditional wet-drying pouring, not only high cost, and labor-intensive, long production cycle, easy to produce burr fly