| 摘要 |
<p>"MICROWAVE DRYING OF CERAMIC SHELL MOLDS" A method of drying a refractory slurry layer deposited on a mold pattern formed of a thermally fusible material having low heatability by subjection to microwave energy, to form a shell mold. The mold pattern is coated with a slurry layer and is subjected to microwave energy sufficient to heat the refractory slurry. A portion of the liquid phase of the heated slurry is withdrawn while concurrently cooling the slurry and mold pattern to maintain the mold pattern at a temperature subjacent the fusion temperature of the mold pattern material. The mold pattern may be recoated, resubjected concurrently to microwave energy and withdrawal of the liquid phase of the slurry until the slurry is effectively dried in the mold pattern while effectively preventing undesirable thermal distortion of the mold pattern.</p> |
