Preparation process of quenched and tempered spring steel wire with tensile strength of 2300-2400 MPa

The invention discloses a preparation process of a quenched and tempered spring steel wire with tensile strength of 2300-2400 MPa. A steel wire rod is included, the preparation process of the quenchedand tempered spring steel wire with the tensile strength of 2300-2400 MPa comprises the following steps of A, peeling, B, toughening and surface treatment, C, cold drawing and D, quenching and tempering, and eddy current flaw detection. By means of the preparation process, the quenched and tempered spring steel wire for a tail door spring with the tensile strength being 2300-2400 MPa and the percentage reduction of area being larger than or equal to 40% can be effectively produced, and the performance of the tail door spring manufactured through the quenched and tempered spring steel wire canmeet the requirements that the maximum working stress is 1469 MPa, the fatigue life is 60,000-100,000 times, and the attenuation rate is smaller than 5% after 1000 hours of heat preservation at 80 DEG C; and meanwhile, the pr