编辑同志: 我们车间有三台喷砂机,原来采用石英砂喷零件,每月需石英砂3-4吨,每吨250元,不但成本高,而且有害工人身体健康。 最近我们选用了与石英砂目数相同的江西河砂(晒干后)进行喷砂试验,无论用手喷式喷砂机或滚筒式喷砂机,均取得了良好的效果。经厂检验科、热处理工程师及 Editorial comrades: Our workshop has three sandblasting machine, the original quartz sand spray parts, quartz sand 3-4 tons per month, 250 yuan per ton, not only high cost, but also harmful to the health of workers. Recently, we selected the same number of quartz sand Jiangxi River sand (dried) sandblasting test, both by hand-jet sandblasting machine or drum-type sandblasting machine, have achieved good results. The factory inspection division, heat treatment engineers and