中温井式电阻炉设计.docx

目 录 一、设计任务 1、专业课程设计题目· ················································1 2、专业课程设计任务及设计技术要求· ··································1 二、 炉型的选择· ·····················································1 三、 炉膛尺寸的确定· ·················································1 1、炉膛有效尺寸（排料法）· ······································1 确定炉膛内径 D ······································ 1 确定炉膛有效高度 H ······································· 2 炉口直径的确定· ············································ 2 炉口高度的确定 ·········································· 3 四、 炉体结构设计 ················································ 3 1、炉壁设计 ·················································· 3 2、炉底的设计· ··················································5 3、炉盖的设计· ··················································6 4、炉壳的设计· ··················································7 五、 电阻炉功率的确定· ···············································7 1、炉衬材料蓄热量 Q蓄 7 ········································ 8 2、加热工件的有效热量 Q件 ····································· 9 3、工件夹具吸热量 Q夹 ········································· 10 4、通过炉衬的散热损失 Q散 ······································10 5、开启炉门的辐射热损失 Q辐 ···································12 6、炉子开启时溢气的热损失 Q溢 ··································12 7、其它散热 Q它 ··········································· 13 8、电阻炉热损失总和 Q总 ··································· 13 9、计算功率及安装功率· ·········································13 六、 技术经济指标计算· ··············································13 1、电阻炉热效率· ···············································13 2、电阻炉的空载功率· ···········································14 3、空炉升温时间· ···············································14 七、 功率分配与接线方法· ············································14 1、功率分配· ···················································14 2、供电电压与接线方法· ·········································14 八、 电热元件的设计· ···············································