本节讨论砂型铸造工艺，包括型模、浇注口、浇道、设计考虑因素及铸造余量。
The processes of sand casting are discussed in this section, including patterns, sprues and runners, design considerations, and casting allowance.
从市场分析入手，对EPC法与传统砂型铸造工艺进行了比较，介绍了EPC法生产球墨铸铁管件的工程设计内容及对策，并提出了工艺设计的关键点。
Based on analysis of market conventional sand mold cast process has been compared with EPC process of which design and measures for s. g. iron pipes have been introduced as well as key of technology.
通过采用合理的铸造工艺，确保了其叶片型线尺寸精度、转轮表面质量及铸件内部的致密度满足了设计要求。
By adopting appropriate foundry techniques, the accuracy of dimension and shape were ensured. The surface quality and internal density of runner meet the requirements of design.
进而利用该项技术对板锤铸件进行模拟及缺陷预测与铸造工艺优化设计。
The CAX technology has been applied to predict casting defects and optimize foundry techniques in the foundry shop.
介绍了铝轮毂铸造生产工艺及铸造车间改进设计。
The cast technology and the improvement design of workshop for aluminum wheel were introduced in this article.
论文根据均衡凝固及大孔出流理论，用计算机辅助设计的方法改进了壳体灰铸铁件的铸造工艺。
In the paper, based on the Propotional Solidification Theory and Large Orifice Discharge Theory, the foundry technology of gray iron casting shell was designed by the method of CAD.
并从结构设计及铸造工艺设计两方面提出了防止球铁井盖上表面缩凹的措施，这些方法在生产实践中已得到检验。
Some prevention methods were proposed from two aspects of structural design and casting processing which has been verified by production practice.
并从结构设计及铸造工艺设计两方面提出了防止球铁井盖上表面缩凹的措施，这些方法在生产实践中已得到检验。
Some prevention methods were proposed from two aspects of structural design and casting processing which has been verified by production practice.
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