【正文】 .......................................... 6 下料 .......................................................................................................... 7 旋壓成形 ................................................................................................... 7 封頭邊緣的切割加工 ................................................................................. 7 打孔 .......................................................................................................... 8 開設(shè)坡口 ................................................................................................... 8 法蘭的加工工藝過程 ........................................................................................... 8 法蘭的選購及焊前準(zhǔn)備 .............................................................................. 8 開設(shè)坡口 ................................................................................................... 9 接管的加工工藝過程 ........................................................................................... 9 下料 .......................................................................................................... 9 開設(shè)坡口 ................................................................................................... 9 補強圈的加工工藝過程 ....................................................................................... 9 上封頭補強圈 ............................................................................................ 9 下封頭補強圈 .......................................................................................... 10 筒節(jié)補強圈 ............................................................................................. 10 開設(shè)坡口 ................................................................................................. 10 底腳的加工工藝過程 ......................................................................................... 10 下料 ........................................................................................................ 10 2 開設(shè)坡口 ..................................................................................................11 4 裝配工藝設(shè)計 ..............................................................................................................11 筒節(jié)與封頭的裝配 .............................................................................................11 裝配方案設(shè)計分析 ....................................................................................11 裝配設(shè)備的選取 ...................................................................................... 12 焊接工藝設(shè)計 .......................................................................................... 12 接管與封頭和筒節(jié)的裝配 .................................................................................. 13 裝配組對 .................................................................................................. 13 焊接方法 ........................