| 摘要 |
PROBLEM TO BE SOLVED: To provide a cold rolling method to enable the mass production through the high-speed rolling while maintaining and improving the surface quality of aluminum plates and foils. SOLUTION: The oil film equivalent td (mm) introduced between a work roll and the plate is expressed by the formula 1, and the cold rolling is implemented in a range of the surface roughness ra (mmRa) of the work roll expressed by the formula 2 when the oil film equivalent td is not less than 10-7 mm, whereη(Pa.s) is the kinematic viscosity of a rolling oil at 40 deg.C, VR (mm/s) is the rolling speed, Vf (mm/s) is the plate speed on the work roll outlet side, r is the draft,Δh (mm) is the draft, R (mm) is the radius of the work roll, p (Pa) is the deformation resistance of a work to be rolled, A=(Δh/R)1/2 (rad) is the biting angle, and rf (%) is the minimum reflectance on the plate surface to be obtained. td=η[VR+ 1-r)Vf]/[Δh/R]1/2×p] (1) and (180A-1.0)td+(1.5×10-3A-6.0×10-6)<=ra<=[3.3 In(rf)-15]td+[6.0×10-4-1.3×10-4 In(rf)] (2).
|
