立式真空淬火炉(不是胡写).docx

课程设计立式真空淬火炉设计说明书（PFTH700/1600型） 目 录第一章 前言············································3第二章 设计任务说明···································4第三章 确定炉体结构和尺寸·······························53.1 炉膛尺寸的确定······································53.2 炉衬隔热材料的选择································53.3各隔热层、炉壳内壁的面积及厚度····················63.3.1 隔热屏············································63.3.2 炉壳内壁·········································7第四章 炉子热平衡计算································94.1 有效热的计算······································94.2 无热功的计算······································94.3 结构的蓄热量······································124.4 炉子功率的验证······································14第五章 电热元件的选择及布置·····························15第六章 工件进出料传送装置设计··························18第七章 其他部件的设计计算·····························197.1 淬火油槽的设计·······································197.2 冷却系统设计·······································207.2.1 冷却水消耗计算····································207.2.2 确定水在水壳内的经济流速和当量直径···············217.2.3 球对流热换系数··································217.2.4 验算水冷炉壁得温度 (℃)·························217.2.5 冷却水的管道设计·······························217.2.6 水冷系统的安全保护·······························227.3 水冷电极···········································227.4 观察窗···········································227.5 热电偶测温装置·····································227.6 风扇··············································237.7 真空放气阀、真空安全阀····························237.8 法兰设计···········································23第八章 真空热处理炉真空系统的设计···················248.1 根据设计技术条件,确定真空系统方案················248.2 真空炉必要抽速计算·······························248.3 根据炉子必要抽气速率选择主泵······················258.4 选配前级真空泵·····································258.5 确定真空系统管及配件尺寸·························26第九章 真空热处理的优点·······························27第十章 真空热处理炉特点·······························28第十一章 参考文献·····································29第一章 前言真空热处理技术是随着国防尖端工业、精密机械制造业等的发展而发展起来的新型热处理技术。尤其是近年来，零件性能及精度要求的提高，使得真空热处理技术日益受到重视，不仅用于活泼及难熔金属的热处理，还逐渐推广到钢铁材料的退火、淬火、回火