Large-scale great current mixed mode cathode roll

The invention relates to a large-specification large current compound cathode roll; the main shaft of the roll is arranged in a roll cylinder along the axial direction; the roll cylinder is fixedly connected with the main shaft through a conductive wheel and a copper conductive plate. The two ends of the roll cylinder are sealed by baffles; the roll cylinder is formed through thermally mounting atitanium cylinder in the outer layer and a steel-copper compound cylinder which uses steel to coat the copper in the inner layer. The invention adopts an end part coining forming method to process a height with an amount that can be forged which is easy and practical; folding phenomena is hard to form when forging; welding line tissues can be further improved by rolling after being forged; the titanium cylinder manufactured by the method has the advantages of low cost and high quality. The cathode roll prepared by the material can ensure the conductive uniformity when large current is inputted; the surface of the roll