潮模造型是砂型做好后,在潮湿状态下进行浇注。与干模造型相比它的优点是,一般不刷涂料,不需烘干,故省工时、省燃料、成本低,生产的周期短,容易组成流水线。然而,由于钢液对砂型的热作用,机械作用和化学作用较为剧烈,所以湿型铸钢有个较为突出的问题,也就是粘砂。目前工厂解决这个问题有两种方法:一种是采用水玻璃作为粘结剂,因为以水玻璃为粘结剂的型砂在一定条件下钢水与之作用可形成一种叫做玻璃体的东西,很脆弱,容易从铸件上清除,使铸件不粘砂。另一种方法是在湿型型砂中加入铁矿粉,铁矿粉包覆于石英砂粒周围,起到熔剂的作用。熔剂本身与钢水作用形成一层熔渣,像釉一样堵塞在砂粒空隙之间,使铸件表面不粘砂。以上 Tide model is the sand mold well, in the wet state for pouring. Compared with the dry mold shape its advantage is that generally do not brush coating, without drying, so save hours, fuel savings, low cost, short production cycle, easy to form a pipeline. However, due to the molten steel on the sand thermal effects, mechanical and chemical more violent, so wet cast steel has a more prominent problem, that is, sticky sand. Currently, there are two ways for the factory to solve this problem. One is to use water glass as a binder, because the water glass is used as a binder to make a kind of vitreous body under certain conditions and is fragile , Easy to remove from the casting, the casting is not sticky sand. Another method is to add iron ore powder in wet sand, iron ore powder coated around the quartz sand particles, played the role of flux. Flux itself with the molten steel to form a layer of slag, like a glaze plug in the gap between the sand, so that the casting surface is not sticky sand. the above