Large thick-section ductile Iron housing easily produces casting defects such as shrinkage cavity, shrinkage porosity, graphite floating and spheroidizing decay.
大型厚断面球墨铸铁件在铸造过程中极易产生缩孔、缩松、石墨漂浮及球化衰退等铸造缺陷。
The casting technique with top gating system, outer shaped iron chill, compound casting mold and core assembly molding was used for producing aluminum impeller on a large scale successfully.
详细介绍了采取顶注式浇注系统、成形外冷铁、复合铸型、组芯造型的铸造工艺，成功地生产出批量铝叶轮。
The factors which have an effect on the formation of a kind of defect called "iron thorn"on the large area of casting are discussed, and process parameters are presented for the process improvement.
根据铸件大面积铁刺缺陷的技术攻关，论述了造成铸件缺陷的影响因素，制定一套可行的工艺参数，对改进工艺参数有一定参考作用。
The white spot defect is an abnormal structure generally found in large cast iron cylinder sleeve by centrifugal casting.
白斑是离心铸造厚壁铸铁缸套的一种异常组织。
The centrifugal casting process of large diameter ductile iron pipes was introduced. The factors causing depression defects were analyzed, and the measures to prevent defects were described .
介绍大口径球铁管离心铸造技术，分析引起凹陷产生的因素，并说明解决方法。
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.
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。
Experimental result shows that the surface of ductile iron casting has a large amount of magnesium, and, there is a gradient distribution of magnesium from external to internal in the cross section.
实验结果表明，镁在球墨铸铁件表面大量富集，在整个横截面上由外到内呈梯度分布状态。
The paper describes the building-up process of a large size rotary jet slip-casting pile by quick pore-forming in bulky iron slag layer and in river banks floated pebble bed.
阐述了在松散渣铁层及河岸漂卵石层中快速成孔，形成较大直径的旋喷注浆桩的过程。
The paper describes the building-up process of a large size rotary jet slip-casting pile by quick pore-forming in bulky iron slag layer and in river banks floated pebble bed.
阐述了在松散渣铁层及河岸漂卵石层中快速成孔，形成较大直径的旋喷注浆桩的过程。
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