Adaptive location of repaired blade for multi-axis milling

Wu, Baohai; Wang, Jian; Zhang, Ying; Luo, Ming

doi:10.1016/j.jcde.2015.06.009

Cited by 11 publications

(2 citation statements)

References 10 publications

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“…Zhang et al [16][17][18] formulated a unified localization constraint for matching unfinished and finished surfaces. Wu et al [19] localized the cross-sectional curves of a blisk blade into its billet, instead of the whole blade volume. In summary, the above methods are to localize the part design in the middle of the billet to pursue even machining allowance.…”

Section: Literature Reviewmentioning

confidence: 99%

Part localization theory and its application on near-net-shape machining

Chang

Wan

Chen

et al. 2018

Int J Adv Manuf Technol

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As an emerging technique, near-net-shape machining implies that billets of a part are near to its net shape (or its design), and thus, little machining of the billets is required to produce qualified pieces. This technique has been employed in production of critical parts, repair of important but worn out parts, and machining of three-dimensional (3-D) printed parts. To cut a near-net-shape billet, its part localization should be conducted by transforming (or localizing) its part design model geometrically such that the transformed model is inside the billet and within the part tolerances. This transformed model is called machining model. After that, the machining model is used to generate tool paths and the billet is cut with the tool along the paths. Unfortunately, the current problem of this technique is that the conventional part localization methods cannot ensure that the transformed model is within the tolerance and tool paths generated with this model cannot be used to cut the billet for a qualified piece. To address this problem, an innovative and practical approach is proposed to transform part features individually, making sure that the transformed model is inside the billet model and satisfies the part tolerance. In this work, three practical examples are rendered to verify this approach. This approach lays a theoretical foundation of part localization and is an effective solution to near-net-shape machining in industry.

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Section: Literature Reviewmentioning

confidence: 99%

Part localization theory and its application on near-net-shape machining

Chang

Wan

Chen

et al. 2018

Int J Adv Manuf Technol

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“…Researchers have employed various methods to repair aero-engine components, such as Powder Metallurgy (PM), welding (GTAW-Gas Tungsten Arc Welding, PAW-Plasma Arc Welding), High-Velocity Oxy-Fuel (HVOF), brazing, and plasma spray [24][25][26][27][28][29]. Ellison et al used an advanced powder metallurgy technique known as Liburdi Powder Metallurgy (LPM) to repair and join high-temperature materials include nickel and cobaltbased alloys.…”

Section: Introductionmentioning

confidence: 99%

Reclamation of intermetallic titanium aluminide aero-engine components using directed energy deposition technology

Mallikarjuna

Reutzel

2022

Manufacturing Rev.

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Titanium Aluminide (TiAl) alloys are intermetallics that offer low density, high melting point, good oxidation and corrosion resistance compared to Ni-based superalloys. As a result, these alloys are used in aero-engine parts such as turbine blades, fuel injectors, radial diffusers, divergent flaps, and more. During operation, aero-engine components are subjected to high thermal loading in an oxidizing and corrosive environment, which results in wear and other material damage. Replacement of the entire component may not be desirable due to long lead time and expense. In such cases, repair and refurbishing may be the best option for the reclamation of TiAl parts. Unfortunately, approved repair technology is not currently available for TiAl based components. Additive Manufacturing (AM) based Directed Energy Deposition (DED) may serve as an option to help repair and restore expensive aero-engine parts. In this work, a review of efforts to utilize the DED technique to repair damaged TiAl-based aerospace parts locally is conducted. Replacing the entire TiAl part is not advisable as it is expensive. DED is a promising technique used to produce, repair, rework, and overhaul (MRO) damaged parts. Considering the high-quality standard of the aircraft industry, DED repaired TiAl parts to be certified for their future use in the aircraft is very important. However, there are no standards for the certification of TiAl repaired parts is reported. Case studies reveal that DED is under consideration for repair of TiAl parts. Hybrid technology comprising machining, repair and finishing capability in a single machine is an attractive implementation strategy to improve repair efficacies. The review shows that the investigations into development and applications of DED-based repairing techniques are limited, which suggests that further investigations are very much needed.

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