对某机械厂进行粉尘作业危害程度分级调查的同时,还对其粉尘作业工人做了体力劳动强度分级调查,以为劳动保护工作、现代化经济管理提供依据。对象和方法对该厂热处理车间的喷砂除锈,铸造车间的铸钢挂砂造型、一次清砂、二次清砂、混合铸铁,工具车间的磨刀,砂轮制造分厂的手工拌料、手工过筛、机械拌料和机械过筛计四个车间(分厂)10个粉 While carrying on the grading investigation to the damage degree of the dust work of a certain machinery factory, it also made a grading investigation on the manual labor intensity of its dust workers to provide basis for labor protection work and modern economic management. Objects and methods of the plant heat treatment plant sandblasting rust casting plant casting sand casting, a clear sand, secondary sand, mixed cast iron, tool shop sharpening, wheel manufacturing plant manual spices, Manual screening, mechanical mixing and mechanical screening of four workshops (branch) 10 powder