Preliminary communication

ANALYSIS OF WELDING TECHNOLOGY FOR SELFSHIELDED FLUX CORED ARC PROCESS OF RAIL PROFILE 60R1

Ivica Garašić ; Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu,Zagreb,Hrvatska
Ivan Jurić ; Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu,Zagreb,Hrvtaska
Darko Vranješ ; Zagrebački holding,podružnica ZET,Zagreb,Hrvatska

Abstract

In this paper some aspects of application of self shielded flux cored arc process ( HRN EN ISO 4063:114 ) are described as well as properties of welded joints.
According to experimental work on rails of grade R200 and 60R1 profile different options of joinrt preparation and preheat temperatures are applied in order to define optimal technology.
Samples are investigated with NDT methods and generally lack of fusion is determined what points out on poor welding technique.
MAcroetch analisys showed that there is significant difference in heat affected zone width and structure depending on applied welding technique and heat temperature.
Furthermore,it is shown that lower preheat temperatures will generate higher hardness in heat affected zine and therefore increase susceptibility to brittle cracking in weld joint.

Keywords

strett car rails; selfshielded flux cored arc welding; technology

Hrčak ID:

196036

URI

https://hrcak.srce.hr/196036

Publication date:

20.3.2018.

Article data in other languages: croatian german

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