球铁处理后液面上总会有些垃圾扒不干净,我厂一度因垃圾废占球铁件废品的第一位。我厂采用截流武内浇口,浇注系统比例大体为1∶2∶0.75,结构如附图。A-A 截面的高度是 B-P 截面高度的1/2,A-A 进入冒口处长度等于 A-A 断面底的宽度。当开始浇铸时,金属液流至 A-A 部分截面突然变小,阻止金属液畅快流入冒口,这 Nodular iron after the surface of some rubbish will always be clean, my factory was scrapped because of the waste of the first piece of dull iron pieces. I plant closure of Wu gate, pouring system is roughly 1: 2: 0.75, the structure as the photo. The height of section A-A is 1/2 of the height of section B-P, and the length of section A-A into the riser is equal to the width of the bottom of section A-A. When casting begins, the flow of the metal stream suddenly becomes smaller in section A-A, preventing the molten metal from flowing into the riser fluently