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-In this study, termite welding process was applied to R260 quality railway rails. Residual stress of original and termite welded rails was measured according to the DIN EN 13674-1 standard. Strain gauges were attached in the middle of the rail foot (also welded part of rail). Cutting was performed than strain values were obtained. Wear test was also performed under 50N. Results show that, residual stress was increased after the welding process and wear rate value was lower than original rails in head part of termite welded rail.

International Iron & Steel Symposium
UDCS

Harun ÇUĞ M. Emre TURAN Mustafa DURSUNLAR

Welding is made up of many scientific and technical works. In industrial applications, it is applied to increase work efficiency and safety, reduce size and weight, and reduce production cost. Welding in the railway is usually done at the joints of the rails. Rail junctions have caused serious problems since the early days of railroads. As a solution, durable algebras have been developed but not sufficient in this application. As a result, the request for removal of the rail joints has emerged. Accordingly, different welding techniques have been developed. Among these techniques, aluminothermite and combustion head are widely used today. In this study, ultrasonic inspection results of the incinerator application applied to the rails in Karabük train station are examined.

International Iron & Steel Symposium
UDCS

Mustafa DURSUNLAR Harun ÇUĞ

It is called superstructure member rail which is made of cast steel which guides the wheels on the railway vehicles and transverses the forces coming from the axles to sleepers. The fish plate used in joining the rails; cause noise, prevent acceleration, increase repair costs, cause damage in vehicles, cause rail to break etc. it is due to the reasons for the rails welding. Rails usually welded by alumino-thermit rail welding, flash butt welding and electric arc welding methods. Alumino-thermit welding based on the removal of heavy metals by the aluminum of heavy metal oxides. In the flash butt welding method is the rail ends are heated to the melting point with the electrical resistance system without any additional elements then pressure is applied to the molten rail ends so that the rails are welded. In this study, hardness properties, optical and SEM images of alumino-thermit and Flash butt welded S49 rails were investigated. In the optical and SEM microstructure examination, the perlitic structure was generally observed in the source region of the sample to which the burn-in source was applied, while the decarburized regions were observed in the source region of the sample to which the thermit source was applied. Low stiffness values were obtained in the fungus and I profile regions of the rail specimen subjected to the effect of decarburized regions and of the rail specimens subjected to thermit welding compared to the burn-in origin specimen.

International Conference of Advanced Materials and Manufacturing Technologies
ICAMT

Harun ÇUĞ Soner ÇETİN Mustafa DURSUNLAR Hayrettin AHLATCI M. Hüseyin ÇETİN