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Modern Porosity Sealing and its Use in Industrial Processes

机译:现代孔隙密封及其在工业过程中的应用

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摘要

Certain vital materials, such as metal castings and powdered metal parts, have inherent microp-orosity. These subsurface pores occur naturally during processing of the part; they are generally the result of crystal formation and shrinkage or gas inclusions. Many times these parts are used in critical assemblies that must be pressure tight to be functional. However, upon machining of the part, small pores are uncovered that can provide a gas or fluid leakage path.
机译:某些重要材料,例如金属铸件和粉末金属零件,具有固有的微孔隙。这些地下孔自然地在零件加工过程中出现。它们通常是晶体形成和收缩或气体夹杂的结果。很多时候,这些零件用于关键组件中,这些组件必须压力密封才能正常工作。但是,在加工零件时,会发现小孔,这些小孔可能会提供气体或流体泄漏路径。

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