Process method for reducing graphitization of low-carbon steel

The invention provides a process method for reducing graphitization of low-carbon steel, which comprises the following steps: heating carbon steel to 1000 DEG C for austenitizing and heat preservation, and then carrying out a controlled rolling and controlled cooling process to reduce the existing graphitization degree of the low-carbon steel. Through a controlled rolling and controlled cooling process, rolling is performed in a high-carbon steel austenite non-recrystallization region, so that a deformation zone in a deformed austenite grain is increased, a thin-sheet pearlite or an annealed pearlite is formed, and the diffusion distance of carbon is reduced, so that the carbon is not gathered to form graphite. After high-carbon steel is graphitized, a gas expansion phenomenon can occur, a product is easy to crack, at present, alloy elements such as chromium, titanium and niobium are generally added into steel to prevent graphitization, and the price is high, however, according to the process method provided