MATEC Web Conf.
Volume 216, 2018X International Scientific and Technical Conference “Polytransport Systems”
|Number of page(s)||6|
|Section||Construction and Transport Machinery, Non-Destructive Testing and Technical Diagnostics|
|Published online||17 October 2018|
Controlled atmosphere GMAW welding of transportation vehicles and production machines parts made from 30MnB5 steel
Polzunov Altai State Technical University, 656049 Barnaul, Russia
2 Altai State Agricultural University, 656049 Barnaul, Russia
3 “Emissiia” LLC, 656067 Barnaul, Russia
* Corresponding author: firstname.lastname@example.org
The paper studies the influence of shielding gas on the composition and the structure of weld joint metal of 30MnB5 steel applied in essential parts of automobiles and tractors. The welding was performed in inert, oxidizing and reducing atmospheres. It was established that TIG welding with argon used as shielding gas did not provide the required mechanical properties when using conventional welding materials. Carbon dioxide during MAG welding caused partial burning of alloying elements. Carbon monoxide used as shielding gas was proved to form reducing atmosphere enabling to obtain chemical composition close to the base metal composition. Metallographic examinations were carried out. The obtained results provided full-strength weld, as well as the required reliability and durability of welded components and joints.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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