| 摘要 |
<p>TAPERED MOLD LINER FACING A continuous molten metal casting mold has front, rear and side walls and is open at the top and bottom in a box-like configuration. The mold walls define a cavity therebetween. Each mold wall comprises an outer backing plate, an intermediate liner plate and an interior facing with the interior facing being of a material having a substantially lower thermal conductivity than the material of the liner plate. The backing plate and liner plate are each of constant thickness, in cross-section, from top to bottom. The interior facing gradually increases in thickness, in cross-section, from top to bottom and the mold cavity decreases, in cross-section, from top to bottom. As the metal being cast flows downwardly through the mold and is cooled, the metal which shrinks upon cooling remains in contact with the facing. Furthermore, because of the increased thickness of the facing, the rate of cooling is reduced as the metal travels downwardly through the mold. Consequently, there is a substantial reduction in air gaps between the cooling metal and the mold walls resulting in a cast metal slab having a smoother exterior surface.</p> |
