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半圆环板铸造工艺优化
Optimization of Casting Process for Half Ring Tube Shaped Casting
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- DOI:
- 作者:
- 郝亮亮 杜婷
HAO Liangliang;DU Ting
- 作者单位:
- 太原科技大学晋城校区
Jincheng Campus,Taiyuan University of Science and Technology,Jincheng 048011,China
- 关键词:
- 半圆环板 数值模拟 工艺优化 铸造缺陷
half-ring tube shaped casting numerical simulation process optimization casting defects
- 摘要:
- 对半圆环板的铸造工艺进行了模拟预测,并对砂型铸造过程和铸造缺陷进行了研究。在中型半圆环板结构和技术要求以及工艺难点分析基础上,设计了工艺方案;并使用Pro/E建立了铸件的三维模型,利用AnyC asting软件模拟了半圆环板的充型和凝固过程,分析了可能存在的缺陷。根据温度场和缺陷分布模拟结果,优化了工艺方案。结果表明,在铸件底部的表面,靠近冒口处出现缩松、缩孔缺陷的概率较大。通过冷铁改变凝固顺序,冒口的补缩效果得到提高,铸件无收缩类缺陷,铸造质量得到提高。
The casting process of half-ring plate was simulated and predicted,and the sand mold casting process and casting defects were studied.Based on the analysis of the structure,technical requirements and technical difficulties of the medium half-ring plate,the technological scheme was designed.In addition,the 3 D model of casting was established by using Pro/E,and the filling and solidification processes of the half-ring plate were simulated by AnyC asting software,and the possible defects were analyzed.According to the simulation results of temperature field and defect distribution,the process scheme was optimized.The results show that there is a high probability of shrinkage porosity and shrinkage cavity near the riser on the bottom surface of the casting.By changing the solidification sequence of the chillers,the shrinkage effect of the risers is improved,and the casting quality is improved without shrinkage defects.