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Microwave heating and processing of solid metals using electromagnetic resonators

Microwave heating and processing of solid metals using electromagnetic resonators

Zhou, Jing, Li, Yingguang, Yang, Tao, Xue, Wenzheng, Hao, Xiaozhong and Gao, James ORCID: 0000-0001-5625-3654 (2022) Microwave heating and processing of solid metals using electromagnetic resonators. International Journal of Advanced Manufacturing Technology, 123 (3-4). pp. 1111-1121. ISSN 0268-3768 (Print), 1433-3015 (Online) (doi:

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Heating plays a vital role in various manufacturing processes of metallic products. Microwave heating has many advantages over conventional conductive heating methods whilst it is currently limited to heating dielectric materials and powdered metals. This paper reports a new microwave heating method using electromagnetic resonators, which was, for the first time, proved effective for heating solid metals. This is a quite promising discovery, because as known, solid metals are essentially reflective of microwaves, and thus metallic objects are often prohibited in microwave ovens. The experiment results showed almost complete microwave absorption and excellent heating performance for a range of metal plates including both magnetic (e.g., iron, nickel and invar) and non-magnetic (e.g., tin and zinc). A patterned microwave heating process was also presented by adjusting electromagnetic resonators and microwave radiations. On this basis, a new multi-zone microwave processing paradigm was developed and demonstrated for welding metal plates. The research work may not only provide potential solutions for efficient heating and processing of complex shaped metal parts, but also enable a plethora of applications like localized heating and thermal display.

Item Type: Article
Uncontrolled Keywords: solid metals; microwave heating; welding; electromagnetic resonators
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Faculty / School / Research Centre / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Design, Manufacturing and Innovative Products Research Theme
Faculty of Engineering & Science > School of Engineering (ENG)
Last Modified: 02 Nov 2022 12:14

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