Manufacturing method of silicon deoxidized 304 stainless steel excellent in surface quality

摘要

The present invention relates to a method for producing a 304 stainless steel having excellent surface quality, and more particularly, to a method for producing 304 stainless steel using an AOD type refining furnace and silicon (Si) deoxidation, A step of making the concentration of the slag refining furnace in the molten steel after filling to 80 to 120 g / T-steel, and a step of reducing the amount of deoxidation to 30 to 50 ppm from immediately before the refining furnace to the tundish Which is superior in surface quality to a silicon oxynitride 304 stainless steel.