选择植物油粘结剂代用品的工作在铸造生产中处于十分重要的地位。本文介绍的粘结剂最突出的特点是:①可用水溶法清理铸件内腔芯砂。②旧砂可以回用。③节约植物油。④降低铸件成本。⑤芯砂发气量低(见表1、2),有利于提高铸件质量。缺点是型芯易吸潮。但再经烘干仍可恢复原来强度,也可在表面刷涂料来解决。通过试验证明:亚硫酸盐纸浆废液配合硝 The choice of vegetable oil binder substitutes is very important in foundry production. This article describes the most prominent features of the binder are: ① available water-soluble clean-up cavity core sand casting. ② old sand can be reused. ③ save vegetable oil. ④ reduce casting costs. ⑤ core sand gas is low (see Table 1, 2), help to improve the quality of castings. The disadvantage is that the core is easy to absorb moisture. However, after drying can still restore the original strength, but also in the paint brush to solve the surface. Test proved that: sulfite pulp waste with nitrate