按照型砂试验的正规操作,测定型砂干透气性不但需要很多设备,而且手续麻烦,时间长。我厂是直接在湿透气性样筒中进行,将湿透气性试验完毕,就可以直接放到电烘箱内或500℃的氧化炉中进行干燥,烘干后等样筒冷 According to the normal operation of the sand test, the determination of dry sand permeability requires not only a lot of equipment, but also troublesome procedures for a long time. Our factory is directly in the wet air permeability of the sample tube, the wet air permeability test is completed, you can directly into the electric oven or 500 ℃ oxidation furnace for drying, drying and other sample tube cold