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采用选择性激光熔化增材制造技术制造用于机械泵流体回路系统的闭式叶轮

Manufacturing of Closed Impeller for Mechanically Pump Fluid Loop Systems Using Selective Laser Melting Additive Manufacturing Technology.

作者信息

Adiaconitei Alexandra, Vintila Ionut Sebastian, Mihalache Radu, Paraschiv Alexandru, Frigioescu Tiberius Florian, Popa Ionut Florian, Pambaguian Laurent

机构信息

Satellites and Space Equipment Department, Romanian Research and Development Institute for Gas Turbines (COMOTI), 061126 Bucharest, Romania.

Gas Turbine Special Equipment, Physics and Mechanical Testing Laboratory, Romanian Research and Development Institute for Gas Turbines (COMOTI), 061126 Bucharest, Romania.

出版信息

Materials (Basel). 2021 Oct 9;14(20):5908. doi: 10.3390/ma14205908.

DOI:10.3390/ma14205908
PMID:34683501
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8538438/
Abstract

In the space industry, the market demand for high-pressure mechanically pumped fluid loop (MPFL) systems has increased the interest for integrating advanced technologies in the manufacturing process of critical components with complex geometries. The conventional manufacturing process of a closed impeller encounters different technical challenges, but using additive manufacturing (AM) technology, the small component is printed, fulfilling the quality requirements. This paper presents the Laser Powder Bed Fusion (LPBF) process of a closed impeller designed for a centrifugal pump integrated in an MPFL system with the objective of defining a complete manufacturing process. A set of three closed impellers was manufactured, and each closed impeller was subjected to dimensional accuracy analysis, before and after applying an iterative finishing process for the internal surface area. One of the impellers was validated through non-destructive testing (NDT) activities, and finally, a preliminary balancing was performed for the G2.5 class. The process setup (building orientation and support structure) defined in the current study for a pre-existing geometry of the closed impeller takes full advantages of LPBF technology and represents an important step in the development of complex structural components, increasing the technological readiness level of the AM process for space applications.

摘要

在航天工业中，市场对高压机械泵流体回路（MPFL）系统的需求增加了人们在制造具有复杂几何形状的关键部件过程中集成先进技术的兴趣。闭式叶轮的传统制造工艺面临不同的技术挑战，但使用增材制造（AM）技术，可以打印出满足质量要求的小部件。本文介绍了为集成在MPFL系统中的离心泵设计的闭式叶轮的激光粉末床熔融（LPBF）工艺，目的是定义一个完整的制造工艺。制造了一组三个闭式叶轮，每个闭式叶轮在对内表面区域进行迭代精加工工艺前后都进行了尺寸精度分析。其中一个叶轮通过无损检测（NDT）活动进行了验证，最后对G2.5级进行了初步平衡。当前研究中为闭式叶轮的现有几何形状定义的工艺设置（构建方向和支撑结构）充分利用了LPBF技术，代表了复杂结构部件开发中的重要一步，提高了AM工艺在空间应用中的技术就绪水平。

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Materials (Basel). 2020 Oct 28;13(21):4829. doi: 10.3390/ma13214829.
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Special Issue "Design and Application of Additive Manufacturing".特刊“增材制造的设计与应用”
Materials (Basel). 2022 Jun 28;15(13):4554. doi: 10.3390/ma15134554.