Patent ID: 11679429

Abstract:
A processing method of NPR steel rebar coil is disclosed. The NPR steel rebar is cold processed and has a diameter of less than 14 mm, and has a yield strength of 800˜950 MPa, a tensile strength of 900˜1100 MPa, and a elongation of not less than 20%. The processing method comprises: an I-shaped placing step L20, an uncoiling step L30, a flattening step L40, a pointing step L50, a butt welding step L60, a hydraulic head-pushing step L70, a cold drawn smoothing step L80, a grit blasting step L90, an in-situ inline annealing step L10, an air-cooled tempering step L11, a coiling step L12, a placing step L13, a flattening step L14, a cold drawn spiral ribbing step L15, a straightening step L16, and a coiling step L17. The method can achieve full intelligence, meet the processing requirements and the automatic intelligent production requirements of NPR steel rebar coil.