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一、前言解放后,上海铸造行业广大工人在党的领导下,在防尘方面取得了很大成绩,但矽肺新病例每年仍有发生。根据统计资料来看,认为铸造行业矽肺预防工作是全市矽肺预防工作中的重点之一。戚墅堰机车车辆厂(简称戚厂)铸造车间工人在厂党委领导下,遵循毛主席关于“中国应当对于人类有较大的贡献”的教导,发扬了敢想、敢干的革命精神,从一九七○年起,反复试验创造了用“七○砂”(即石灰石砂)代替石英砂造型的新工艺。在市
I. Introduction After the liberation, the majority of workers in the foundry industry in Shanghai have made great achievements in dust prevention under the leadership of the party. However, new cases of silicosis still occur each year. According to statistics, it is considered that silicosis prevention in the foundry industry is one of the key points in the prevention of silicosis in the city. Under the leadership of the factory party committee and committee committee, the foundry workers in the Qishuyan Rolling Stock Works Factory (hereinafter referred to as Qi Factory), guided by Chairman Mao’s teaching on “China should make greater contribution to mankind”, carried forward the revolutionary spirit of daring to think and daring to do something from 19 to 19, Since 1970, repeated tests have created a new process of replacing the quartz sand with “70 sand” (ie, limestone sand). In the city