The traditional technique of internal Ironchill of steel castings hasn'tsatisfied with requirements of flaw detection quality of mill housings.
对于有探伤要求的轧机牌坊，采用传统的内冷铁工艺生产铸钢件的技术已不能满足质量要求。
2
In this paper, according to production practice, the application of bulk indirect external ironchill and the technological measure in mill housings are introduced.
本文以生产实践为依据，介绍了大块间接外冷铁在轧机牌坊上的应用及工艺措施。
3
The casting technique with top gating system, outer shaped ironchill, compound casting mold and core assembly molding was used for producing aluminum impeller on a large scale successfully.