Flash butt welding process
When flash butt welding is a pressure welding process that with the pressure butt welding is used. The welding heat required is generated by electrical current and, using the electrical resistance in the welding zone, is generated in the form of an arc as a result of the passage of current .
When welding railway tracks, correspondingly large apparatuses are required to generate typically 40–100 kA amperage at 6–15 V voltage. This process (abbreviation: RA) is regularly used in the rail welding works, but recently also in the track. It shortens the splint somewhat by using up material.
The connection welding of rail joints causes a reduction of the wheel-rail noise . The seamless welding of the rails to each other enables a reduction of the rail traffic noise by 6 dB (A).
Flash butt welding was also used on the Australian Fortescue course built in 2006-2008 ; it is the route with the world's highest load capacity (as of 2014).
literature
- Dilthey: Welding technology manufacturing processes 1 , Springer, 3rd edition, pp. 116–121
Web links
- Stephan Kallee: Flash butt welding - a resistance welding process for metals (EN ISO 4063: Reference No. 24).
- Youtube: Explanation of the flash butt welding process
- Patent DE3404649C2 June 8, 1989: Resistance flash butt welding
Individual evidence
- ↑ Lothar Fendrich (Ed.): Manual Railway Infrastructure. Volume 10, Springer, Berlin 2006, ISBN 3-540-29581-X , pp. 317-319.
- ^ Matthias Müller and Thorsten Schaeffer: Website Gleisbau-Welt, Mobile flash butt welding. 2003–2012, accessed February 26, 2012.
- ↑ Claudia Hämmerling: Much ado about nothing at Karower Kreuz and how safe is the Szczecin Railway?