在球铁生产中,渣眼、垃圾等缺陷是经常遇到的,为解决这类缺陷,铸造工作者采取了多种方法,如在浇注系统中增设闸门阻流、集渣包,以及提高浇注温度等措施,但收效甚微。近来,我们根据有关资料的介绍,把哈工大研制的XR—Ⅱ纤维过滤网试用于球铁零件生产,用网孔2×2.5的滤网,在1320℃浇注温度下能较大幅度降低渣眼、砂眼、垃圾等缺陷,提高了铸件的成品率。 In ductile iron production, defects such as slag eyes and rubbish are often encountered. In order to solve such defects, foundry workers have taken a variety of methods, such as adding gate choking and slag collection in the pouring system, and improving pouring Temperature and other measures, but with little effect. Recently, we introduced the XR-II fiber filter developed by Harbin Institute of Technology into the ductile iron parts production according to the introduction of the relevant materials. With the mesh of 2 × 2.5, the slag can be greatly reduced at the pouring temperature of 1320 ℃. Trachoma, trash and other defects, improve the casting yield.