Tapping hole drilling machine main function is to regularly ream the taphole of the converter. As the steelmaking process proceeds, the taphole will gradually narrow due to erosion by high-temperature molten steel and accumulation of cold steel, affecting tapping efficiency and quality. Meanwhile, the reaming operation also facilitates the replacement of worn taphole sleeve bricks, helping to extend the service life of the sleeve bricks and improve steelmaking efficiency. #moj_content