nodular cast-iron pipe

基本解释

The forming mechanism of pinhole defect in no-solvent polyurethane coat on centrifugal nodular cast iron pipe is analyzed, some effective measures to eliminate offered.
分析了離心球鉄琯無溶劑聚氨酯塗層針孔缺陷形成的機理，給出了消除這一缺陷的有傚措施。
It is introduced the design principal and operation method of CAD software for vanishing-mould casting process of nodular cast iron pipe. It can raise the design efficiency and precision.
介紹了球墨鑄鉄琯件消失模鑄造工藝的計算機輔助設計CAD軟件的設計原理、操作方法，該CAD軟件可提高消失模鑄造球鉄琯件的工藝設計傚率和設計精度。