灰铸铁件浇口截面的计算,一般以小截面为基准。封闭式的浇注系统以内浇口为最小截面;开放式的浇注系统以直浇口或阻流断面为最小截面。由于铸造工艺的复杂性,至今还没有精确的浇口截面计算公式。实际上,浇口截面只要控制在适宜的范围内,都能获得合格铸件,在能获得合格铸件的前提下,尽量选用最小的浇口截面。本文介绍的灰铸铁件浇口截面计算法,是在我厂长期生产的实际经验和国内外有关文献的基础上,通过大量数据的统计、分析而归纳总结出的简易 Gray cast iron gate section of the calculation, generally based on small cross-section. Closed gating system with the gate to the minimum cross-section; open gating system to sprue or blocking section for the minimum cross-section. Due to the complexity of the casting process, there is still no accurate gate cross section calculation formula. In fact, as long as the gate cross-section control in the appropriate range, can get qualified castings, qualified castings in the premise, try to use the smallest gate cross-section. This article describes the gray cast iron gate section calculation method, is the long-term production in our plant’s actual experience and relevant documents at home and abroad, based on a large number of data through statistical analysis, summed up summarized simple