| Issue |
MATEC Web Conf.
Volume 297, 2019
X International Scientific and Practical Conference “Innovations in Mechanical Engineering” (ISPCIME-2019)
|
|
|---|---|---|
| Article Number | 01004 | |
| Number of page(s) | 6 | |
| Section | Innovative Technological Processes of the Machine Parts Production, Assembly and Procuring Production | |
| DOI | https://doi.org/10.1051/matecconf/201929701004 | |
| Published online | 13 November 2019 | |
Electric Arc Surfacing of Defective Plots of Rails in the Area of Electrocontact Welded Joint
1
Irkutsk State Transport University, 15, Chernyshevsky St., Irkutsk 664074, Russia
2
Irkutsk National Research Technical University, 83, Lermontov St., Irkutsk 664074, Russia
* Corresponding author: mgrech@irk.ru
One of the main causes for the failure of the rails of a continuous joint made by electric contact welding is defects in collapse and wear in the joint zone. We address the usage of electric arc surfacing to repair defective rails. The structure and hardness are studied of the defective areas of rails recovered by electric arc surfacing performed in one and two layers. Static tests and fatigue tests of pilot samples of rails with eliminated defects were carried out. The pilot samples with defects eliminated by electric arc surfacing meet the criteria of static strength to the same degree as the rail samples without surfacing. The surfacing technology that we examined should be adjusted by applying preheating to reduce the cooling rate of metal in the weld zone. Fatigue tests showed a positive effect from surfacing at the wear sites in the welded joint. Performance tests confirm that electric arc surfacing is promising to eliminate defects in the collapse and wear of the rails in the area of the electric contact welded joint.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.