shrinkage porosity

Design and Development of System on Prediction& Analysis of Shrinkage/ porosity Defect in Castings

铸件缩孔/缩松缺陷预测及缺陷分析系统的设计与开发

Through analysis of typical technology for some lost wax casting examples, it is expounded that improvement of casting design with more reasonable technology offers an effective and simple way to obtain highly qualitative and compact castings without porosity and shrinkage defect.

通过对几个典型生产实例的工艺分析，说明用修改精铸件结构设计的方法，使铸件结构更具合理的工艺性，是获取优质精铸件的一条行之有效和便捷的途径。

Due to the special structure and strict technical requirements of the front shock absorber sleeve of motorcycle, which leads to casting defects, such as shrinkage porosity, surface blowhole, are very easy to occur in production.

铝合金摩托车液压式前减震器筒体特殊的结构、严格的技术要求，导致生产中铸件很容易出现缩松、皮下气孔等缺陷。

Through rationally controlling pouring temperature, preheated temperature for mould and temperature distribution of the cast mould, the shrinkage porosity in the castings can be eliminated to obtain the castings with high and even mechanical properties.

合理控制浇注温度和铸型预热温度能有效地消除大高径比铸件内的缩松，获得力学性能高且均匀的铸件。

At the same time, research has been done on the prediction of shrinkage cavity and porosity of SG iron based on the micro-modeling.

同时，从微观模拟的角度研究了球铁件缩孔缩松预测。

Solves problems such as shrinkage and porosity, without test castings.

不需要测试铸件,就能够解决收缩和多孔等问题.

Effects of 45 ° Chamfer Angle and Fillet on Shrinkage Porosity ( hole) in Investment Castings

45°倒角与圆角对熔模铸件缩松（孔）的影响

The numerical simulation of3D temperature field of castings during solidification process was carried out and the shrinkage cavity and porosity of sample castings were predicted using G/ R method.

对铸件开展了凝固过程三维温度场数值模拟，并应用G／R法对铸件进行了缩孔缩松预测。

During the casting process, The traditional Sterling silver alloy is prone to absorb air, oxidize and it has poor fluidity, and the tendency of shrinkage porosity in the castings, and is easy to blacken the casting surface.

传统斯特林银合金铸造时容易吸气氧化，流动性较差，有缩松倾向，铸造毛坯件表面容易发黑。

Bending strength, bulk density and thermal dilatation of molybdenum slag glass-ceramics are smaller when adding molybdenum slag more while obvious porosity, water-absorbing capacity, rate of shrinkage are bigger, the performance of Acidresistivity and alkali resistivity are excellent.

随着钼渣添加量增加，钼渣微晶玻璃的抗折强度、体积密度和热膨胀系数减小，而显气孔率、吸水率、收缩率增大，耐酸耐碱性能好。

Central shrinkage porosity and segregation are main defects of high-carbon steel billets.

高碳钢连铸坯存在的最大质量问题是中心缩松、中心偏析严重.