粘砂是铸件常见的一种表面缺陷,一般虽然不算废品,但严重地影响铸件的外观质量,增加清理费用.严重的粘砂特别是凹角粘砂,往往很难清理,有时还得报废.纺织机械铸件对表面质量要求严格,所以必须解决铸件的粘砂问题,要解决这个问题,必须找出粘砂的主要原因,从而采取切实可行的措施.从我们经验看来,产生粘砂原因尽管很多,但主要有两个;旧砂的含坭量和铁水中的含磷量. Sticky sand is a common surface defects of castings, although generally not considered as waste, but seriously affect the appearance of casting quality, increase clean-up costs. Severe sticky sand, especially concave angle sticky sand, often difficult to clean, and sometimes scrapped. Textile machinery casting strict requirements on the surface quality, it is necessary to solve the problem of sticking sand castings, to solve this problem, we must find the main reason sticky sand, to take practical measures. From our experience, sticky sand causes despite Many but mainly two; the amount of sand contained in the old iron and phosphorus in the water.