| Issue |
MATEC Web Conf.
Volume 390, 2024
3rd International Scientific and Practical Conference “Energy-Optimal Technologies, Logistic and Safety on Transport” (EOT-2023)
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|
|---|---|---|
| Article Number | 04013 | |
| Number of page(s) | 7 | |
| Section | Modeling and Computer Engineering, Modernization and Repair of Transport Facilities, Materials Science and Extension of the Resource of Structural Elements | |
| DOI | https://doi.org/10.1051/matecconf/202439004013 | |
| Published online | 24 January 2024 | |
Ensuring the technological strength when welding the shaft with flange of auto-vehicles
1 Lviv Polytechnic National University, Department of Oil and Gas Engineering and Welding, 79013 Lviv, S.Bandera Str., 12, Ukraine
2 Lviv Polytechnic National University, Department of Motor Vehicle Transport, 79013 Lviv, S.Bandera Str., 12, Ukraine
3 Lviv Polytechnic National University, Department of Technical Mechanics and Engineering Graphics, 79013 Lviv, S.Bandera Str., 12, Ukraine
* Corresponding author: andrii.r.dziubyk@lpnu.ua
In engineering, the use of highly loaded shafts with flanges is mainly intended for additional attaching of various technological equipment. At the same time, the shaft-flange fitting is performed using an annular weld. Next, parts such as gears, pulleys, bushings, etc. are mechanically attached to the flange. The work considers the achievement of the technological strength of the shaft-flange fit when using arc welding methods. It has been established that the emergence of dangerous defects such as weld cracks is possible. The cause for this is a number of structural, technological and metallurgical restrictions. It is shown that it is expedient to apply welding technological schemes that make it possible to minimize areas of structural heterogeneity. It is proposed to use a transition layer made of low-carbon material, which is characterized by high plastic properties. As a result, the creation of a barrier layer in the zone of structural heterogeneity is achieved. The plastic intermediate weld contributes to the partial relaxation of residual stresses of welding and increases the crack resistance of the welded joint as a whole.
© The Authors, published by EDP Sciences, 2024
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