铝合金支架铸造工艺设计与优化

发布时间：2018-01-23 07:51

本文关键词： 铝合金支架数值模拟铸造缺陷工艺优化　出处：《特种铸造及有色合金》2017年05期 　论文类型：期刊论文

【摘要】：以薄壁支架为研究对象,根据其结构特点及质量要求,设计了薄壁铝合金支架砂型铸造工艺方案,利用数值模拟软件对铸造工艺的充型及凝固过程进行模拟。结果发现,由于支架壁厚较薄,无法完全充满铸型,凝固过程中出现大量缩孔、缩松缺陷。分析了缺陷产生的原因,进一步优化浇注系统,并合理选择冒口和冷铁安放位置,设计腰圆形冒口与冷铁尺寸,再次进行数值模拟。结果表明,优化后铸造工艺能较好地消除铸造缺陷,生产出合格铸件。
[Abstract]:Taking the thin wall support as the research object, according to its structure characteristics and quality requirements, the sand mold casting process scheme of thin wall aluminum alloy support was designed. Numerical simulation software was used to simulate the filling and solidification process of the casting process. The results showed that because of the thin wall thickness of the support, it could not be fully filled with the mold, and a large number of shrinkage holes appeared in the solidification process. The causes of defects are analyzed, the gating system is further optimized, the riser and cold iron placement position is reasonably selected, the waist circular riser and the size of the cold iron are designed, and the numerical simulation is carried out again. The results show that. The optimized casting process can eliminate casting defects and produce qualified castings.
【作者单位】：河南理工大学材料科学与工程学院;平原光电科技有限公司;
【基金】：河南省高等学校重点科研项目(16A450002) 河南理工大学校内基金资助项目(B2016-007)
【分类号】：TG292
【正文快照】： 支架是各类工程器械的重要组成部件,其作用是固定和支撑机器运转。支架铸件需要高强度、薄壁,在采用砂型铸造时,易出现缩孔、缩松等铸造缺陷[1]。为减少铸造缺陷,本课题对支架铸造工艺进行了研究,采用View Cast软件对铸件充型和凝固过程进行数值模拟和优化,确定了浇注系统和浇

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