Carbon steel containing vanadium and titanium and a manufacturing method thereof include: primary steelmaking water; When the C content of molten steel is 0.05% ~ 0.10%, the P content is not more than 0.015%, and the S content is not more than 0.020%, the steel is drawn from the ladle. In the process of steel extraction, the content of Si and Mn in molten steel is adjusted to 0.17% ~ 0.37%, 0.70% ~ 1.00%, and the oxygen content of molten steel is adjusted to less than 0.0020%. The Als content of the controlled molten steel is 0.015% ~ 0.025%, and Als represents acid-soluble aluminum. The oxygen content of molten steel is adjusted below 0.0010% in ladle refining furnace. Adjust the Ti content of molten steel to 0.005% ~ 0.010%, V content to 0.02% ~ 0.04%; Adjust the C content of molten steel to 0.17% ~ 0.23%, so as to obtain carbon steel, The carbon steel contains 0.17% ~ 0.23% C, 0.17% ~ 0.37% Si, 0.70% ~ 1.00% Mn, 0.005% ~ 0.010% Ti, 0.005% ~ 0.010% Als and 0.02% ~ 0.04% V, with a residual of Fe and unavoidable impurities. The content of each element in carbon steel is the weight percentage content.
The manufacturing method of carbon steel containing vanadium and titanium includes the following steps: (a) initial steelmaking water; (b) When the C content of molten steel is 0.05% ~ 0.10%, the P content is not more than 0.015%, and the S content is not more than 0.020%, the steel is drawn from the ladle; (c) Adjust the Si content of molten steel to 0.17% ~ 0.37%, Mn content to 0.70% ~ 1.00%, and adjust the oxygen content of molten steel to less than 0.0020% during the process of steel drawing; (d) Control the Als content of molten steel to 0.015% ~ 0.025%, Als represents acid-soluble aluminum; (e) Adjust the oxygen content of molten steel in ladle refining furnace to less than 0.0010%, and adjust the C content of molten steel to 0.17% ~ 0.23%; (f) Recycle vacuum degassing of molten steel, and adjust the Ti content of molten steel to 0.005% ~ 0.010%, V content to 0.02% ~ 0.04%, so as to obtain carbon steel containing vanadium and titanium. The carbon steel contains 0.17% ~ 0.23% C, 0.17% ~ 0.37% Si, 0.70% ~ 1.00% Mn, 0.005% ~ 0.010% Ti, 0.005% ~ 0.010% Als and 0.02% ~ 0.04% V, with a residual of Fe and unavoidable impurities. The content of each element in carbon steel is the weight percentage content.
