用泡沫陶瓷过滤器来过滤液态金属是去除夹杂的有效途径,目前在国内外已经得到广泛应用。透过率是过滤器的重要性能之一,它不但影响到铸造过程中的浇注速度,而且还影响到去除夹杂的效果,因此,国外已把这一性能作为过滤器的重要性能指标之一。目前,人们是以空气作为流体来测试过滤器的透 Foam ceramic filter to filter liquid metal is an effective way to remove inclusions, at home and abroad have now been widely used. Transmittance is one of the important performance of the filter, it not only affects the pouring speed during casting, but also affects the removal of inclusions, therefore, this performance has been abroad as one of the important performance indicators of the filter. At present, people use air as the fluid to test the filter penetration