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针对新一代直喷发动机油底壳,利用模流软件以及缺陷对比,对其压铸浇注系统进行了工艺分析和工艺设计。浇注系统改为3边进浇,将内腔难补缩位置靠近进浇口,下侧为鹰嘴式内浇口入料,两侧为普通的平搭式内浇口入料,产品不设搭桥。加大直冷运水管直径,局部位置增加隔水片。由此,有效地消除了铸件冷隔、缩孔、气孔、夹层、烧伤、变形等缺陷,提高了模具的稳定性。
Aiming at a new generation of direct injection engine oil sump, process analysis and process design of its die-casting pouring system were carried out by using mold-flow software and defect comparison. Casting system into the 3 into the pouring, the cavity near the filling position is difficult to fill, the lower part of the ingot-type ingot feeding, both sides of the ordinary flat take type ingot feeding, the product does not set Take the bridge. Increase the direct cooling pipe diameter, local location to increase the water separator. As a result, defects such as cold separation, shrinkage cavity, porosity, interlayer, burns and deformation of the casting are effectively eliminated, and the stability of the mold is improved.