High strength fracture splitting connecting rod non-quenched and tempered steel and continuous casting production process thereof

The invention relates to high strength fracture splitting connecting rod non-quenched and tempered steel and a continuous casting production process thereof. The steel has the chemical composition bythe mass percentage: 0.32-0.40% of C, 0.90-1.25% of Si, 0.85-1.30% of Mn, 0.008-0.045% of P, 0.055-0.095% of S, not more than 0.35% of Cr, not more than 0.30% of Ni, not more than 0.25% of Cu, not more than 0.10% of Mo, not more than 0.035% of Al, 0.030-0.070% of Ti, 0.25-0.35% of V, 0.009-0.022% of N, and the balance Fe and impurity elements. The product has a form of a hot rolled round steel bar. The process flow comprises the steps of treatment with an electric furnace or converter, off-furnace refining, VD or RH vacuum degassing, continuous casting and continuous rolling. The steel can obtain uniform ferrite and pearlite; a fracture splitting connecting rod is formed by forging, the mechanical property Rel of the connecting rod is not less than 900 MPa, Rm is not less than 1100 MPa, and the hardness is 305-360