Using thin, wide ingate and chill can prevent the shrinkage defect, and improve casting yield by 3%.
采用薄、宽的内浇道和冷铁工艺消除了飞轮铸件的缩孔缺陷，铸造工艺出品率提高3%；
Since contraction of nodular iron is bigger than its expansion nodular iron castings must be fed from outside to prevent shrinkage defect.
由于球铁的收缩大于膨胀，球铁件铸造必需外部补缩。
The numerical simulation of temperature field and shrinkage defect prediction for a valve casting, which was involved in 4 kinds of casting proces.
对采用4种不同铸造工艺方案的阀体铸件凝固过程进行了数值模拟及缺陷预测，获得了与试验相一致的模拟结果。
The reason causing shrinkage defect was analyzed, and the following measure was adopted: setting chills on both the top and bottom surfaces of the casting.
对引起缩松的原因进行了分析，并采取了相应的工艺措施，上下底面同时加冷铁，消除了缩松缺陷。
Influence of the initial temperature fields and mold hardness on the shrinkage defect of ductile iron casting by EPC process was mainly investigated in this paper.
本文主要讨论了初始温度场和铸型硬度对消失模铸造球墨铸铁件收缩缺陷的影响。
According to the optimal results, the flange casting with the ratio of diameter and height of 10 was produced successfully, the shrinkage defect was avoided, the quality of the castings was ensured.
根据优化结果进行生产，成功地生产了直径与高度比为10的法兰铸件，避免了缩孔缺陷，保证了铸件的质量。
The main task of this paper is to develop prediction & analysis system of shrinkage cavity and porosity defect in a casting for foundry engineering application.
本论文以有限元分析软件为开发平台，运用设计参数化和功能模块化技术，初步开发了面向铸造工程应用的铸件缩孔缩松预测及缺陷分析系统。
The result indicated that the residual stress in the product produced by optimized project was decreased obviously, the volumetric shrinkage was homogeneous and the defect became slight.
结果表明，优化工艺后成型的复杂壳体制件的残余应力明显减小，体积收缩也比较均匀，缺陷明显减轻。
Centerline shrinkage is the main defect that affects the inner quality of continuous casting slab.
连铸坯内部中心缩松、缩孔是影响铸坯内部质量的主要缺陷之一。
The results showed that the root reason for valve body failure was seriously casting defect exist and its big and density shrinkage porosity form the original crack;
结果得出：阀体失效的主要原因是阀体本身存在严重的铸造缺陷，铸造疏松严重、孔洞尺寸大乃于形成原始裂纹源；
The results showed that the root reason for valve body failure was seriously casting defect exist and its big and density shrinkage porosity form the original crack;
结果得出：阀体失效的主要原因是阀体本身存在严重的铸造缺陷，铸造疏松严重、孔洞尺寸大乃于形成原始裂纹源；
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