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福建机器厂铸造车间生产的E135船用柴油机体和机座,体积大,结构较复杂,型芯采用流态自硬砂,内腔机械粘砂和化学粘砂都较严重。铸件退火时,采用本省低质烟煤或白煤,出炉后的铸件表面粘了一层难以清除的黑灰,防锈漆附着不牢。为此,我们采用了湿态喷砂清理法。湿态清理法的设备很简单,一只我厂自己生产的3L—10/8型空压机贮气缸代替高压缸,内装粗河砂、Na_2S0_3及适量的水,通以6～8公斤/厘米~2的压缩空气,从缸口再接出一条高
E135 marine diesel engine body and machine base manufactured by foundry workshop of Fujian Machinery Factory are bulky and complicated in structure. The core adopts fluidized self-hardening sand, and mechanical cavities and chemical sticky sand are more serious in the cavity. Casting annealing, the use of low-grade bituminous coal or white coal in the province, baked castings surface sticky layer of hard to remove black ash, anti-rust paint adhesion is not strong. To this end, we use a wet sand blasting method. Wet cleaning method is very simple equipment, a factory I produced 3L-10/8 air compressor cylinder instead of high-pressure cylinder, built crude river sand, Na_2S0_3 and the amount of water, through 6 to 8 kg / cm ~ 2 compressed air, then out from the cylinder port a high