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简述了目前砂型铸造大型球墨铸铁件生产实践中一些传统铸造工艺存在的不足;介绍和探讨了大型球墨铸铁件铸造工艺的优化设计:应优先选用分层进液浇注系统型式、合理确定浇注系统的有效浇注时间及其最小截面积,有效过滤铁液,优先选用冒口的形式,应用适宜的冷铁,合理确定浇注工艺的一些重要工艺参数等。
The disadvantages of some traditional casting processes in the production practice of large-scale ductile iron castings with sand casting are briefly described. The optimal design of casting process for large-scale ductile iron castings is introduced and discussed. The type of layered casting liquid pouring system should be preferentially selected and the pouring system Effective casting time and minimum cross-sectional area, effective filtration of liquid iron, preferably in the form of riser, the application of appropriate cold iron, reasonable to determine the casting process some of the important process parameters.