熔鹽罐底板組對焊接工藝

1、熔鹽罐底板組對焊接工藝6 Assembly welding for tank bottom plate罐底由中幅板和邊緣板組成，罐底板焊縫均采用對接 焊。基礎(chǔ)驗收合格后，確定方位畫出中心線，得出中點、畫 出墊板、邊緣板安裝位置線，其中邊緣板安裝鋪設(shè)按設(shè)計直 徑和基礎(chǔ)坡度長度外加收縮余量來確定半徑。邊緣板之間鋪 設(shè)間隙外側(cè)為8-10mm，內(nèi)側(cè)為12-14mmTank bottom is composed of center plate and edge plate, the tank bottom plates are all butt welded, before laying the bot

2、tom plates, its lower surface should be painted with anti-corrosion coatings, leaving 50mm range of the edge. After foundation inspection & acceptance, the position shall be determined to draw the center line, so as to find the midpoint, draw the mounting position lines of backing board and edge pla

3、te, wherein the radius of edge plate mounting and laying is determined as the design diameter and foundation slope length plus shrinkage allowance. The laying gap of edge plates is 6mm of outside and 8mm of inside.6.1罐底邊緣板焊接6.1 Weld tank bottom plate弧形邊緣板的對接焊采用手工焊。先焊其外側(cè) 300mm焊縫，打底焊后進行滲透檢查，以第二層開始每層錯

4、開5070mm焊接完成后上部磨平。為控制焊接引起的角變形，將坡口處用夾具向上提起 68mm6.1.1Manual welding is applied for the butt welding of curved edge plates. First, the outside 300mm weld joint shall be carried out, with penetration inspection after backing welding.Starting from the second layer,each layer shall shift 50 70mm, after wel

5、ding is completed, the upper part shall be grinded flat. To control the angular distortion caused by welding, theend bevel shall be lifted 6 8mm up with clamp.邊緣板剩余對接焊縫的焊接，焊工應(yīng)對稱分布每 隔600mm隔縫跳焊600mm，焊縫表面應(yīng)光滑平整，焊接應(yīng) 加防變形板。6.1.2For the welding of edge plates butt weld seam, the welder should do the skip s

6、equence welding of 600mm in symmetrical distribution of 600mm.Weld surface should be smooth and anti-deformation plate should be added.Anti-deformation plate6.2中幅板焊接6.2 Center plate welding 中幅板的焊接，采用 CO2氣體保護焊打底，埋弧 自動焊蓋面焊接成形。6.2.1 The welding of center plate uses C02 gas shielded welding for backing,

7、 with submerged automatic arc welding and cosmetic welding.底板中幅板按照先短后長的順序進行焊接，初層 焊道采用分段退焊法施焊。6.2.2 The plate in the bottom plate is welded according to the order of the initial length and thelong post, and the primary bead is welded by subsection back welding method.中幅板鋪設(shè)時，按照排版圖從中心向四周鋪設(shè)， 邊緣板依安裝位置線鋪設(shè)

8、，墊板與相鄰兩塊底板中的一塊先 點焊，底板與墊板應(yīng)貼緊，其間隙不大于1mm6.2.3 When laying the center plates, it should be done according to the layout diagram from the centerto the edges, with backing plate and one of two adjacent bottom plates spot welded first, the bottom plate andbacking plate should be tightly against each other,

9、with the gap not greater than 1mm.中幅板組對時，其間隙控制在6lmm之間。底板 與墊板之間的點焊應(yīng)按焊接技術(shù)措施規(guī)定的次序嚴格執(zhí)行。6.2.4 When fitting up the center plates, the gapshould be kept between 4-6mm. Spot-welding between the base plate and backing plate should be carried out according to the sequence provided in welding technical specifications strictly.罐底板中幅板焊接時，按下圖順序進行:I庖L按照上圖所示焊接順序和方向進行分段倒退跳焊，同一 組內(nèi)的焊縫同時焊接，分段長度要一致，焊接層數(shù)相同，焊 接電流和焊接速度一致，層與層之間的焊接接頭要錯開，另 外中幅板之間丁字