在铸造生产中,长期来一直以植物油作复杂坭芯粘结剂.这一陈旧工艺(如用桐油)的大量使用,显然与“备战、备荒、为人民”的伟大战略方针和飞跃发展的工业生产很不适应.因此很多工厂和铸造研究部门早就极力寻求代用植物油的粘结材料——合脂,并取得了成功的经验.但是由 In the production of castings, vegetable oil has been used for a long time as a binder, and the heavy use of this old process (such as tung oil) is clearly linked to the great strategic principle of “preparing for war, preparing for waste, and for the people” and the leapfrogging industry Production is not suitable.So many factories and foundry research departments have long sought strong substitute for the bonding material of vegetable oil - fat, and has gained successful experience.But from