Ispitivanje zamorne čvrstoće i normi emisije štetnih supstanci u vazduhu tokom MIG i TIG zavarivanja 1460 legure aluminijum-litijum

Anna Lukianenko,Sviatoslav Motrunich,Darko Bajić,Tetiana Labur,Anatolii Pokliatskyi

doi:10.5937/fmet1903608l

Abstract

This work presents the results of studying harmful substances in the air, released in the case of tungsten inert gas (TIG) and metal inert gas (MIG) welding of 1460 aluminum alloy (Al-Cu-Li). It is shown that the TIG process is accompanied by smaller evolution of the solid component and gas component of welding fumes than in MIG welding. Ozone concentrations during TIG and MIG welding are significantly (1.3 and 7.4 times, respectively) higher than the maximum permissible concentration. It is found that ultraviolet radiation, accompanying the welding process, is the main factor of toxic gas generation in the working zone of the studied aluminum-lithium alloys. Also, this paper presents analyses of microstructure, hardness, strength characteristics and fatigue behavior of 1460 TIG weld joints.

Highlights

Aluminium-lithium alloys are widely used in aircraft and aerospace equipment design
Results of studying the welding fumes during metal inert gas (MIG) and tungsten inert gas (TIG) welding of 1460 alloy showed that solid component of welding fumes (SCWF) components of complex chemical composition are released into the air within the working zone, which have different hazard class according to the GOST 12.1.00588 national standard [8]
TIG welding of aluminium-lithium alloy 1460 has smaller amount of WFSC and WFGC compared to MIG welding process

Summary

Professor University of Montenegro Faculty of Mechanical Engineering

This work presents the results of studying harmful substances in the air, released in the case of tungsten inert gas (TIG) and metal inert gas (MIG) welding of 1460 aluminum alloy (Al-Cu-Li). It is shown that the TIG process is accompanied by smaller evolution of the solid component and gas component of welding fumes than in MIG welding. Ozone concentrations during TIG and MIG welding are significantly (1.3 and 7.4 times, respectively) higher than the maximum permissible concentration. It is found that ultraviolet radiation, accompanying the welding process, is the main factor of toxic gas generation in the working zone of the studied aluminum-lithium alloys. This paper presents analyses of microstructure, hardness, strength characteristics and fatigue behavior of 1460 TIG weld joints

INTRODUCTION

Welding process MIG TIG

CONCLUSION

TIG MIG SCWF GCWF GOST

Findings

ИСПИТИВАЊЕ ЗАМОРНЕ ЧВРСТОЋЕ И НОРМИ ЕМИСИЈЕ ШТЕТНИХ СУПСТАНЦИ