Choice of Manufacturing Techniques for Fabricating Metal Aerospace Filter: A guide to process choice for design engineers
With recent advances in manufacturing techniques, aerospace system designers have new options for fabricating higher-quality, lower-weight, higher- capacity, cost-effective ﬁlters. Unfortunately, not all ﬁltration in aerospace applications can afford the cost of premium ﬁlters but new ﬁltration problems continue to arise such as the need for longer operating lifetimes in aggressive ﬂuids. Due to the increased process capabilities of non-traditional fabrication methods, in comparison to other methods such as stamping, drilling and milling, these new technologies have made a successful transition from the laboratory onto the production shop-ﬂoor. However, it is difﬁcult to choose which of these processes, such as photochemical machining (PCM), photo electroforming (PEF) and laser beam machining (LBM) should be chosen for fabricating small, inexpensive, lightweight aerospace ﬁlters. Moreover, the complexity of design, materials selection and other technical limitations are also factors in process choice, unlike formed wire mesh products. In this paper, according to manufacturing demands of special aerospace ﬁlters, PCM, PEF and LBM have been appraised technically and economically, to aid the manufacturing engineer in his choice of process for fabricating metal aerospace ﬁlters.
W. Wang, D.M.Allen, H.J.A.Almond, Cranfield University