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Open AccessReview

Review on Advances in Metal Micro-Tube Forming

Faculty of Automotive Systems Engineering and Production Engineering, TH Köln-University of Applied Sciences, Betzdorfer Str. 2, 50679 Köln, Germany
Metals 2019, 9(5), 542; https://doi.org/10.3390/met9050542
Received: 25 March 2019 / Revised: 3 May 2019 / Accepted: 6 May 2019 / Published: 10 May 2019
(This article belongs to the Special Issue Metal Micro-forming)
Metallic tubular micro-components play an important role in a broad range of products, from industrial microsystem technology, such as medical engineering, electronics and optoelectronics, to sensor technology or microfluidics. The demand for such components is increasing, and forming processes can present a number of advantages for industrial manufacturing. These include, for example, a high productivity, enhanced shaping possibilities, applicability of a wide spectrum of materials and the possibility to produce parts with a high stiffness and strength. However, certain difficulties arise as a result of scaling down conventional tube forming processes to the microscale. These include not only the influence of the known size effects on material and friction behavior, but also constraints in the feasible miniaturization of forming tools. Extensive research work has been conducted over the past few years on micro-tube forming techniques, which deal with the development of novel and optimized processes, to counteract these restrictions. This paper reviews the relevant advances in micro-tube fabrication and shaping. A particular focus is enhancement in forming possibilities, accuracy and obtained component characteristics, presented in the reviewed research work. Furthermore, achievements in severe plastic deformation for micro-tube generation and in micro-tube testing methods are discussed. View Full-Text
Keywords: micro-tubes; micro-tube drawing; micro-hydroforming; laser assisted; severe plastic deformation; micro-tube testing micro-tubes; micro-tube drawing; micro-hydroforming; laser assisted; severe plastic deformation; micro-tube testing
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MDPI and ACS Style

Hartl, C. Review on Advances in Metal Micro-Tube Forming. Metals 2019, 9, 542.

AMA Style

Hartl C. Review on Advances in Metal Micro-Tube Forming. Metals. 2019; 9(5):542.

Chicago/Turabian Style

Hartl, Christoph. 2019. "Review on Advances in Metal Micro-Tube Forming" Metals 9, no. 5: 542.

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