COMPOSITION FOR COATING OF ELECTRODES FOR MANUAL ARC WELDING OF STRUCTURAL AND CAST STEEL CONTAINING NANODIFIFICATION SILICONE CARBIDE

摘要

The present invention relates to an electrode coating composition for manual arc welding of structural steel and cast steel parts, whose chemical composition, by weight % is as follows: marble flour 16,7?18 calcium fluorite 22,0?23,0 chalk 9,0?11,0 rutile 5,0?6,0 ferrotitanum 9,0?11,0 ferrosilicon 2,7?3,3 ferro-manganese 5,4?6,6 ferrochromium 3,1?3,9 potassium feldspar 4,0?5,0 talmagnesium bromide 2,4?3,6 potassium alginate 0,8?1,2 silicon carbide 0,2?1,4 iron powder up to 100% the particle size of silicon carbide (SiC) is in the range 50 ? 60 nm ± 5 nm. The coating composition subject to the patent application provides higher rigidity and increases the wear resistance of the welded metal. The tests show a significant ejection of the structure and a well-formed seam.