Method for producing tin phosphorus bronze band by direct cold cogging

The invention discloses a method for producing a tin phosphorus bronze band by direct cold cogging, comprising: charge mixture, materials are melted and then transferred into a heat preserving furnacewith the copper liquid temperature being 1140-1200 DEG C; horizontal casting is carried out, and roll blank having the thickness of 14.0-16.5mm, the width of 210-430mm and the length of 45-68mm can be obtained by the technique of pulling, stopping and reversely pushing; face-milling is carried out on the roll blank, and every side is milled by 0.5-0.8mm; then, direct cold cogging rolling is carried out for a first time, and a coiled stock having the thickness of 5.6-9.2mm can be obtained by rolling; intermediate annealing is carried out on the coiled stock in a bell jar furnace for a first time, the annealing temperature is 520-640 DEG C, and the heat preservation lasts for 4.5-6h; after that, the steps of crude rolling thinning, secondary intermediate annealing, surface cleaning passivation, cold fine rolling, l