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我院精密铸造三结合基地,遵照毛主席关于“自力更生,艰苦奋斗,破除迷信,解放思想”的伟大教导,在驻院解放军毛泽东思想宣传队和院革委会的领导下,试验成功了自硬高强度模壳,为多快好省地发展熔模精密铸造生产创造了条件。一、特点原来模壳制造工艺是每涂一层涂料就需要用氯化铵硬化一次,周期长,效率低,劳动条件差,不能适应生产发展的需要。新工艺是将模壳涂料中加入适量的赤坭。这样,涂完涂料便可自行硬化,生产周期短,效率高,模壳强度高,在焙烧和浇注过程中,不用装箱、填砂,减轻了劳动强度,改善了劳动条件,解决了氨气熏人的“老大难”,并节约了大量氯化铵。
Under the guidance of Chairman Mao’s great teachings of “self-reliance, hard work, breaking superstition and emancipating the mind”, under the leadership of the Mao Zedong Thought Propaganda Team and the Academy and Revolutionary Committee of the People’s Liberation Army held in the hospital, the trial succeeded in self-hardening High-strength shell, for more rapid and economical development of investment casting to create the conditions for the production. First, the characteristics of the original mold shell manufacturing process is coated with a layer of paint on the need to harden once with ammonium chloride, long cycle, low efficiency, poor working conditions, can not meet the needs of production and development. The new technology is to add the right amount of mold coating red chrysanthemum. In this way, after coating the paint can be self-hardening, short production cycle, high efficiency, high strength mold shell, in the roasting and casting process, without boxing, sand filling, reducing labor intensity and improve working conditions, to solve the ammonia Smoked man’s “grandstanding” and save a lot of ammonium chloride.