| 摘要 |
<p>PURPOSE:To improve corrosion resistance of glass conveying roll (a lift-out roll, a rear roll, etc.) to molten tin in a float glass production line. CONSTITUTION:The surface of a drum part (metal) (11) of a roll is coated with a flame sprayed film (12) of a Co-based alloy composed of 15-30% Cr, 5-16% Al, 0.1-1% Y and the remainder substantially composed of Co. Thereby, corrosion and sticking of tin with molten tin are hardly caused and a sound roll surface is maintained for a long period as compared with that of a conventional roll made of heat-resisting steel. As a result, effects such as improvement in roll useful life and reduction in maintenance thereby, improvement in line productivity and stabilization of glass quality can be obtained.</p> |
