多年来,我厂生产的柴油机机体铸件和飞轮铸件经常产生夹砂缺陷,一直未能彻底解决。1987年下半年,我厂采用渣油粘结剂混制造型面砂,用于铸件易央砂的部位,有效的防止了铸件夹砂缺陷的产生,并改进了铸件的表面粗糙度。一、夹砂的分布特征我厂生产的S195型柴油机飞轮铸件,毛重为40kg,外形尺寸为0432×62.5,采用每箱4件,顶面分型,水平浇注,使用1040×1010 Over the years, the diesel engine body castings and flywheel castings produced by our factory often produce nip defects and have not been completely solved. In the second half of 1987, our factory used the residue binder to mix and match the modeling sand, which is used for the easy sand casting of the casting. It effectively prevented the occurrence of sand inclusion defects and improved the surface roughness of the casting. First, the sand distribution characteristics I plant the S195 diesel engine flywheel castings, gross weight of 40kg, dimensions of 0432 × 62.5, using four per case, the top type, the level of pouring, the use of 1040 × 1010