论文部分内容阅读
为保証鑄型的质量,泥型造好以后,最好要經过三个阶段的干燥,自然阴干,低温干燥和高温干燥: (1) 自然阴干——自然阴干是将鑄型在常温下放置16～24小时,使型料中的部分水分慢慢蒸发出去。如有裂纹,用较细的泥型砂修补,裂紋較大时可以索性挖去,再行修补,然后刷上耐火涂料。 (2) 低温干燥——低温干燥是在100℃以下的温度进行干燥,将自然阴干后的鑄型装入烘爐焙烘,升温速度可以在每小时60～80℃在350～400℃保持10～15小时。
In order to ensure the quality of the mold, after the clay type is made well, it is best to go through three stages of drying, natural drying, low temperature drying and high temperature drying: (1) natural drying - natural drying is the mold placed at room temperature 16 ~ 24 hours, so that part of the material in the water slowly evaporated out. If cracked, with a smaller mud sand repair, a larger crack can simply dredged, and then repair, and then brush the refractory coating. (2) Low-temperature drying-Low-temperature drying is drying at a temperature below 100 ° C, and baking the naturally dried mold in an oven at a heating rate of 60 to 80 ° C per hour at 350 to 400 ° C ~ 15 hours.