用压汞法测定了离心成形坯体的孔隙率，曲线呈窄的单峰分布，证明了粉体无团聚。
The results show that the distribution curves are one-humped and concentric, which indicates that the powders have no agglomeration.
在离心铸管浇注过程中，扇形包翻转速度稳定与否是影响铸管成形质量的主要因素。
In the process of centrifugal casting, the stable overturn speed of the sector ladle is the main reason to influence the quality of casting pipes.
本文重点研究了离心铸造铝基复合材料梯度功能盘状零件的成形工艺。
The main task of this paper is to research the processing of functionally gradient disc-like parts by centrifugal casting.
为了提高水冷型离心机球墨铸铁管的成形率，降低废品率，对球墨铸铁管气孔、针孔产生的原因进行了分析，并提出了一些预防措施。
The paper reported the development and fine property of the nodular cast iron pipe used in gas pipeline, as well forecasted its market prospect.
为了提高水冷型离心机球墨铸铁管的成形率，降低废品率，对球墨铸铁管气孔、针孔产生的原因进行了分析，并提出了一些预防措施。
The paper reported the development and fine property of the nodular cast iron pipe used in gas pipeline, as well forecasted its market prospect.
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