Control method for carbon components of L415 pipeline steel

The invention relates to a carbon component control method for L415 pipeline steel, and belongs to the field of steelmaking. The method adopts a process route of combined blown converter-LF refining-RH refining-continuous casting. According to the method for controlling the carbon components of the L415 pipeline steel, the process route of converter steelmaking, LF refining, RH refining and continuous casting is adopted, molten steel with qualified components and temperature is obtained, the problem that the L415 pipeline steel depends on low-carbon ferrochrome is solved, smooth production scheduling of L415 pipeline steel production is guaranteed, and the production cost is reduced. The invention provides an L415 pipeline steel carbon component control method, through system planning, converter end point carbon is controlled to be 0.03-0.04%, low-carbon ferromanganese, ferrosilicon and ferromolybdenum are used in tapping, high-carbon ferrochromium, ferrocolumbium and ferrotitanium are used in an LF refining