| 摘要 |
<p>Elongated backup rollers (8) have magnetized fins (26) with circular rims (28) in rolling contact with a reverse surface (34) of a revolving, flexible, thin-gauge, heat-conducting, magnetically soft ferromagnetic casting belt (40). The magnetized fins guide and stabilize the belt against thermal distortion while it moves along a mold cavity (C) being heated at its front surface by molten metal while being cooled at its reverse surface by flowing liquid coolant. Each roller includes a non-magnetic shaft (10) rotatable around its axis (22) with magnetically soft ferromagnetic annular fins spaced along the shaft. Collar-shaped reach-out permanent magnets (30) magnetized in a direction parallel with the axis (22) are mounted on the shaft between successive fins. The fins and reach-out collar magnets alternate in sequence along the shaft.</p> |
