铸造隔断冷铁的设计与实践

Design and Practice of Partition Chillers in Casting

在铸造生产中,隔断冷铁放置于两冒口之间,控制凝固方向,延长补缩距离,提高工艺出品率,但如果使用不当,易引起缩松和裂纹等缺陷。从铸件等效壁厚、冷铁影响区、冷铁吸热能力等方面考虑,制定出一套隔断冷铁的设计方法,可以计算出冷铁的长度、宽度、厚度和间距的尺寸参数值。在实践中,从减轻缺陷产生的角度,提出一些冷铁的应用变化形式和防止缺陷产生的措施。

In casting production,the partition chiller is placed between two risers to control the solidification direction,extend the filling and shrinking distance and improve the process yield.However,if it was not used properly,it is easy to cause shrinkage and cracks and other defects.Considering the equivalent wall thickness of the casting,the influence zone of the chill and the heat absorption capacity of the chill,a set of design method for separating the chill was worked out,and the dimension parameters of the length,width,thickness and spacing of the chill could be calculated.In practice,from the point of view of reducing the occurrence of defects,some application changes of chiller and measures to prevent the occurrence of defects are put forward.