It is thin extremely form reform manner null of the metal

摘要

PURPOSE: To continuously elongate a dead thin metal strip ≤0.3mm in thickness in the longitudinal direction and to correct its shape while restraining its longitudinal elongation by rolling. ;CONSTITUTION: When the dead thin metal strip S having a modulus E of longitudinal elasticity, an yield point or 0.2% yield strength Y, a plate thickness t≤0.3mm is passed through a gap G along a cylindrical roll 3, bent along a floating roll 5, passed through the gap G again, bent and unbent along a cylindrical roll 4 under such a state that a tensile stress T of 0.1Y≤TY is given, the diameter D of the floating roll 5 is given by 3-100mm and is small enough to satisfy Dt(E+T-Y)/(Y-T) and when the angles through which lines connecting the axes of the cylindrical rolls 3, 4 with a floating roll 5 make to lines connecting the axes of the cylindrical rolls with each other are given respectively by α, β, the cylindrical rolls satisfy 50°≤α+β and the cylindrical rolls 3 and/or 4 small in diameter are supported by ≥1 backup rolls 10.;COPYRIGHT: (C)1993,JPO&Japio