• Shrinkage and shrinkage porosity, stress and deformation often occurs during the production of heavy steel casting.

    大型铸钢件实际生产中易产生缩孔松、应力变形等缺陷。

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  • It is discussed that adiabatic material, as well as ratio of height and width effected solidification, shrinkage cavity and shrinkage porosity.

    讨论了锭模绝热板材质对凝固位置及缩孔疏松的影响

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  • According to the simulated temperature fields and solid fraction, the hot spot and shrinkage porosity are not found in the bolster casting, so the new casting process is feasible.

    温度相分数模拟结果表明,铸件没有产生缩孔缺陷,表明工艺的可行性。

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  • The morphology of austenite dendrites in shrinkage porosity in nodular iron is displayed by the color etching technique and the formation mechanism of shrinkage porosity has been analyzed.

    采用着色腐蚀技术,金相显示球墨铸铁区中奥氏体枝晶组织形貌,分析了球铁缩松形成机制

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  • Large thick-section ductile Iron housing easily produces casting defects such as shrinkage cavity, shrinkage porosity, graphite floating and spheroidizing decay.

    大型断面球墨铸铁件在铸造过程中极易产生缩孔、缩松、石墨漂浮球化衰退铸造缺陷

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  • The influence of chemical composition, inoculation process, temperature of molten iron and pouring system on the formation of shrinkage cavity and porosity was described.

    叙述化学成分孕育工艺温度浇注系统等因素对薄壁球铁铸件缩孔缩松形成影响

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  • The common defects of the housing casting include cracks, sand drop, slag inclusion, shrinkage porosity and rough grain, etc.

    机架常见缺陷裂纹、掉、夹缩孔缩松晶粒粗大等。

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  • And the shrinkage porosity distribution in the castings and the mechanical properties of the castings were also researched.

    研究铸件中的铸件力学性能分布特点。

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  • Owing to both physical and chemical properties of metal material, there are inevitably shrinkage cavities, porosity and segregation in ingots.

    由于钢锭内部不可避免地存在偏析疏松缩孔微裂纹等冶金缺陷。

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  • The reasons resulting in the shrinkage porosity, gas-hole and impacted sand in bronze castings were analyzed.

    分析了青铜叶轮铸件出现缩孔、气孔砂等缺陷的原因

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  • The shrinkage cavity, depression, shrinkage porosity, scab and swell defects often took place with the heavy plate castings produced by adopting traditional foundry method.

    厚实铸件传统工艺生产,容易产生缩孔、缩、缩松、夹砂包等铸造缺陷

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  • Batch production shows there are no shrinkage cavity and porosity in casting, and no blowholes and sand inclusions on the top surface. The yield of the casting is 81%.

    经批量生产验证铸件缩孔、缩松缺陷,表面无渣气孔缺陷,工艺出品率81%。

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  • 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.

    论文有限元分析软件为开发平台,运用设计参数化功能模块化技术,初步开发了面向铸造工程应用的铸件缩孔缩松预测缺陷分析系统

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  • A numerical analysis method is presented to simulate the shrinkage porosity formation in steel castings on the basis of heat flow, interdendritic fluid flow and possible evolution of dissolved gases.

    提出了预测铸钢件缩松缺陷数值方法,考虑了传热、枝晶间液相流动气体析出等因素。

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  • It is liable to produce various casting defects, such as coarse grain, shrinkage cavity, shrinkage porosity, hot tearing, microstructure segregation and solute segregation.

    铸造过程中容易产生各种铸造缺陷晶粒粗大、缩孔缩松、开裂、组织成份偏析等

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  • Three cylindrical steel castings with different diameters were cast to study the shapes of shrinkage cavity and porosity, and the calculated results match the experiments quite well.

    计算实浇了三个不同直径圆柱形铸钢件,计算结果实验结果基本一致。

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  • Compared the compound porous metal with copper powder sintered porous metal, the results show that the former has smaller shrinkage rate and higher porosity.

    结果显示相比于烧结多孔材料,泡沫金属铜粉烧结复合多孔材料具有更小收缩率更大的孔隙率。

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  • By use of orthogonal test design, how the injection speed, pouring temperature and mold temperature effects the casting shrinkage porosity forming is studied.

    然后,本文通过正交试验方法研究了速度浇注温度模具预热温度铸件松缩孔缺陷的影响

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  • The results indicate that the casting defects are mainly shrinkage porosity and cracks caused by solidification shrink, which mainly presents in the hot spot between the spoke and the rim.

    研究表明:轮毂的工艺缺陷主要缩孔、缩松以及凝固过程收缩导致裂纹缺陷,主要分布轮辋、辐条交汇的部位

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  • The effects of sintering schedule on the shrinkage, open porosity and bending strength of the stainless steel foam with 3-D opened network structure were investigated in this paper.

    研究烧结制度具有三维网状结构泡沫不锈钢线收缩率、孔孔隙度、抗弯强度影响。

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  • 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;

    结果得出阀体失效主要原因阀体本身存在严重铸造缺陷,铸造疏松严重孔洞尺寸大乃于形成原始裂纹源

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  • 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;

    结果得出阀体失效主要原因阀体本身存在严重铸造缺陷,铸造疏松严重孔洞尺寸大乃于形成原始裂纹源

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