THE INFLUENCE INVESTIGATION OF THE INTRODUCTION OF CARBON-FLUORINE CONTAINING ADDITIVES IN FLUX OK 10.71 ON THE PROPERTIES OF 10HSND STEEL WELDS

Abstract

The experimental study of the effect of carbon-fluorine containing additives in flux OK 10.71 for 10HSND steel welding has been carried out. The studies have shown, that the additive in the composition of an aluminate-base flux has a positive effect on the weld quality. It has been found out that using carbon-fluorine containing additives in an amount of 4 and 6 % in OK 10.71 flux by 10HSND steel welding the total oxygen content in the weld decreases, but the value of required mechanical properties and the impact viscosity at low temperatures increase, at the expense of reducing the impurity of the weld by oxide nonmetallic inclusions, besides the carbon concentration in the welds remains at the carbon concentration level of base metal.