纺织机械配件是一般典型的薄壁铸铁零件。它一般具有形状复杂、多孔壁薄、局部地方厚大等特点。生产工艺若控制不严,就必然会产生大量的铸造缺陷,带来不应有的经济损失。在生产中我们的做法主要有下面两点。一、对造型材料的配砂进行严格控制在生产纺织机械薄壁小型铸件过程中,开始由于经验不足,对造型材料按老方法配料,走过一段弯路。一是对原砂选择不够严;二是配砂比例要求不够准确;三是砂处理不完善。为保证铸件质量,我们注意了造型材料及型 Textile machinery parts are generally typical thin-walled cast iron parts. It generally has a complex shape, thin porous walls, local thick places and so on. If the manufacturing process is not strictly controlled, it will inevitably produce a large number of casting defects, resulting in undue economic losses. Our practice in production mainly has the following two points. First, the strict control of the sand with molding materials In the production of thin-walled textile machinery casting process, began due to lack of experience, the molding material according to the old method of ingredients, through a curved road. First, the choice of the original sand is not strict enough; Second, the proportion of sand with less than accurate requirements; Third, imperfect sand treatment. To ensure the quality of castings, we pay attention to the modeling materials and types