Roll category Roll category Roller hardness HS Roll neck tensile strength/MPa The main usage
Cast steel roll Cast steel, semi-steel, graphite steel, high chromium steel, tool steel (high carbon high speed steel) 30~70 35~70 35~60 70~80 80~90 500~1000 300~700 500~900 Composite roll neck material selection according to strength requirements Large and medium-sized steel blanking and roughing stands, rough rolling stands for strip mills, and support rollers. Large, medium and small steel intermediate and finishing stands, strip steel work rolls. Large, medium and small steel roughing stands. After the strip rough-rolled frame, the pre-rolling frame, the cold-rolled strip work roll. Hot-rolled strip finishing stands, small or wire finishing stands.
Cast iron roller Chilled cast iron, Unbounded (limited) chilled cast iron, Ductile iron, High chromium cast iron, Special cast iron 55~85 55~85 35~80 60~95 75~95 150~220 150~220 300~700 Composite roll neck material selection according to strength requirements Plates, wires, profiles, tube finishing racks Plates, wires, profiles, tubes in the rolling, finishing mill, plate strip rolling rack Profiles, wire rods, pipe roughing, and middle rolling stands Small steel, wire rod mill finishing stand, pre-finished rolling stand Small, wire, tube pre-finishing, finish rolling
Powder metallurgy rolls Tungsten carbide, Tool Steel 80~90 80~90 Composite roll neck material selection according to strength requirements Composite roll neck material selection according to strength requirements Small, wire rod finishing stands, cold rolled small steel Small, wire rod finishing stands, strip finishing stands
Forged steel roll Hot roll, Cold roll, Support roller, Forging semi-steel and white iron 35~60 75~105 40~70 35~70 500~1100 700~1400 700~1400 500~1000 Billet, large roughing stand, sheet steel roughing stand Cold rolled strip work rolls, profiles, welded tube forming rolls Cold and hot strip mill Large, medium and small rough, medium and fine rolling stands