新型浇注系统与充型过程的计算机模拟.pdfVIP

维普资讯 学兔兔 May 2008 铸 造 VO1．57 NO．5 FOUNDRY ·481· 新型浇注系统与充型过程的计算机模拟 张玉妥 ，贾 丹 ，李贵茂·，王承志 (1．沈阳理工大学材料科学与工程学院，辽宁沈阳110168；2．中国科学院金属研究所，辽宁沈阳110016) 摘要：对比模拟了新型浇注系统与传统浇注系统的充型过程，包括金属液在浇口杯、直浇道、横浇道和内浇道中的流 动情况。基于新型浇注系统设计原则设计并模拟了摇枕铸件的充型过程，模拟结果进一步证明了新型浇注系统充型平 稳，浇道处于充满状态，避免了气体和夹杂卷入型腔。 关键词：浇注系统；充型过程；计算机模拟 中图分类号：TP391．9 文献标识码：A 文章编号：1001—4977(2008)05～0481—03 A New Gating System and Its Computer Simulation of Filling Process ZHANG YU-tuo’，2 J IA Dan’，LI Gui．mao’．WANG Cheng．zhi’ (1．School of Materials Science and Engineering，Shenyang Ligong University，Shenyang 1 1 01 68， Liaoning，China；2．Institute of MetaI Research，CAS，Shenyang 1 10016，Liaoning，China) Abstract：The simulation of the filling process for both the new and traditionaI gating systerns has been carried out comparatively，including the flowing of liquid metal as it travels through the pouring basin，sprue．runner and ingate．The filling process of the gating systern designed for bolster casting has been simulated based on the designing principle of the new gating systern．The results showed that the mould filling was smooth．and the runners were completely fulI of Iiquid metaI during the filling process．which avoid the entrapment of oxide and gas into the mould cavity． Key words：gating systern；filling process；computer simulation 浇注系统设计是铸造工艺设计的一项重要内容， ①在确保铸件能够充满、不产生冷隔缺陷的前提下， 是控制铸件质量的关键因素之一。优良的浇注系统应 直浇道、横浇道和内浇道的尺寸设计应保证金属液在 该保证金属液快速、平稳地充型；有利于金属液中夹 流动过程中始终充满浇注系统，防止气体和夹杂物的 渣和气体的集中与排除；调节铸件的凝固顺序，有利 卷入；②充型平稳，尽量降低充型速