Preparation process of environment-protecting and corrosion-resisting brass material for sea farming

The invention discloses a preparation process of an environment-protecting and corrosion-resisting brass material for sea farming. The preparation process comprises the process flow of casting-heating-hot rolling-surface milling-primary rolling-intermediate annealing-finish rolling-finished product annealing-shearing-packing and warehousing; the finished product specifications are as follows: a belt material is 0.5-5*600-1000 mm; a plate is 0.5-5*600-1000*1000-6000 mm or 3-5*1000-3000*1000-9000 mm; and the performances are as follows: tensile strength(Rm) is 280-550 MPa; extension strength(Rp0.2) is 200-450 MPa; percentage elongation after fracture (Al1.3) is not lower than 40%. The preparation process keeps the antibacterial performance of a copper alloy net cage, and improves the corrosion resistance; the service lifetime of the net cage is prolonged by more than 5 years; and the preparation process can totally satisfy needed environment protecting and corrosion resisting demands required in an actual worki