TIG Riveting of Temperature Sheath Microprobe

Mircea Burcă; Marin Liţă; Laurenţiu Roland Cucuruz

doi:10.3139/120.110273

Article

TIG Riveting of Temperature Sheath Microprobe

Mircea Burcă , Marin Liţă and Laurenţiu Roland Cucuruz

Published/Copyright: May 26, 2013

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From the journal Materials Testing Volume 53 Issue 10

Abstract

In order to close one of the microprobe ends covering, considering geometrical sizes and the properties of the material, the electro riveting process by TIG welding was chosen. The semi spherical shape of the end closed by welding supposed a pre-preparation of the end and an adequate positioning of gun and covering so that the material burning was avoided and the process automatically developed. Macroscopic investigations related to the geometrical shape of the closed end allowed the optimization of the welding process and the structural investigations made by optical microscopy and X-rays diffraction evinced the structural transformations of the material, supplying information for the post welding heat treatment to increase the corrosion resistance characteristics of the covering.

Kurzfassung

Um die Endabdeckungen einer Mikroprobe zu schließen, wurde unter Berücksichtigung der Geometrie und der Eigenschaften des Werkstoffes ein Elektronietprozess durch WIG-Schweißen gewählt. Die Halbkugelform des durch Schweißen zu schließenden Endes erfordert eine Vorbereitung des Endes und eine adäquate Positionierung des Schweißbrenners in einer Weise, dass ein Materialabbrand verhindert und der Prozess automatisiert werden kann. Makroskopische Untersuchungen wurden für die diesem Beitrag zugrunde liegende Studie mit der geometrischen Form des zu schließenden Endes verglichen und erlaubten eine Optimierung des Schweißprozesses. Die strukturellen Untersuchungen mittels Lichtmikroskopie und Röntgendiffraktion ließen die Phasentransformtionen des Werkstoffes erkennen und lieferten Informationen zur Wärmenachbehandlung zur Verbesserung der Korrosionsbeständigkeit der Abdeckung.

Mircea Burcă was born in 1955. He received the Dr. Tech. Sci. degree from Politechnica University of Timisoara in 2002. He is a Lecturer at the Mechanical Engineering Faculty, Materials Science and Welding Department. His field of interest includes fusion welding technologies, resistance welding and welding equipments.

Marin Liţă was born in 1952. He received the Dr. Tech. Sci. degree from the Politehnica University of Timisoara România. He is a Lecturer at the Mechanical Engineering Faculty, Materials Science Department, “Politehnica” University of Timisoara. His fields of interest include materials science, physical metallurgy, thermal treatments, preparation of magnetorheological suspensions, characterization of magnetic fluids and magnetorheological suspensions.

Laurenţiu Roland Cucuruz was born in 1949. 1972 he received his Engineer degree (mechanical engineering); 1986 hD.-Eng. in Physical Metallurgy. Since 1977 he was assistant, working at the Department for Material sciences of the Mechanical Engineering Faculty of the “Politehnica” University of Timisoara România. Since 1988 he is professor for materials science, casting technologies, and nonferrous materials. His fields of interest include advanced materials, especially copper and aluminum alloys.

References

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Published Online: 2013-05-26

Published in Print: 2011-10-01

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https://doi.org/10.3139/120.110273