立式真空淬火炉设计说明书.docx

课程设计立式真空淬火炉设计说明书（PFTH700/1600型）第一章前言32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、渗碳、渗氮、渗金属等各领域。真空热处理工件通常具有一系列突出优点：不氧