西安煤矿机械厂二连广大革命职工,遵照毛主席“独立自主、自力更生”的教导,自己设计制造一台大型半自动抛丸机.这台半自动抛丸机由抛丸室、抛头、铸件运载系统、铁丸循环系统、电气控制系统组成,可以清理铸件(铸钢、铸铁)的表面粘砂和氧化皮.每小时能清理铸件35吨,可清最大铸件尺寸为1000×1500毫 Xi’an Coal Mine Machinery Plant II even the vast number of revolutionary workers, in accordance with Chairman Mao “independent, self-reliance,” the teaching and design their own design and manufacture of a large semi-automatic shot blasting machine.This semi-automatic shot blasting machine from the blasting room, throwing head, casting delivery system, Iron ball circulation system, electrical control system, can clean the surface of the castings (cast steel, cast iron) sticky sand and oxide skin.It can clear 35 tons of castings per hour.It can clear the largest casting size is 1000 × 1500 milliliters