塑料工厂里的压制工,每逢例假或其他原因停车,总要把模具涂上一层黄干油,以防生锈,而到下次使用时,又必须把它们擦掉。但这种油粘性大,很难擦,要耗用较多的棉纱、纸张和时间;如果是一些较夏杂的模具,又会因擦得不理想,在初开车时生产出不少的废品。目前我们采用了50％的机油(20号或30号的)和50％的黄干油配制成的混合油,应用效果较好。配制方法是把它们装入容器里加热,搅拌,煮沸,等到象皮鞋油一祥就行了。用这种油上模具,不仅粘度小,易擦净,还可以使初开车时少出废品;由于经过煮沸蒸发,油中水分含量很少,所以防锈效果也好。更 Pressers in plastic factories, when they are parked for vacation or other reasons, must always apply a layer of yellow dry oil to prevent rust. They must be wiped off the next time they are used. However, this kind of oil is sticky, it is difficult to wipe, it needs to use more cotton yarn, paper and time; if it is a relatively summery mold, it will not be polished well, and it will produce a lot of waste at the beginning of the drive. . At present, we use a blend of 50% of oil (20th or 30th) and 50% of yellow dry oil. The preparation method is to put them in a container and heat, stir, boil, wait until the shoe polish is on the line. With this oil-on-mold, not only the viscosity is low, it is easy to clean, but also it can make wastes less when the car is started. Since the boiling water evaporates, the moisture content in the oil is small, so the rust-proof effect is also good. more