我厂熔模精密铸造的模壳硬化,原用工业氯化铵水溶液作硬化剂,但在硬化反应过程中,逸出大量有毒、刺激性与腐蚀性很强的氨气,直接损害操作工人的身体健康。在批林批孔运动的推动下,我车间革命职工以两条路线斗争为纲,大胆试验,并参照兄弟厂的经验,用盐 I mold casting plant mold hardening, the original industrial ammonium chloride aqueous solution as a hardener, but in the hardening reaction process, escape a large number of toxic, irritating and highly corrosive ammonia, the direct damage to the workers Healthy body. Driven by the pro-Lin Pok campaign, the revolutionary workers of our workshop took the two lines of struggle as the key link and boldly tested them. Using the experience of Brother Plant,