1.2 Back-up 垫板 Back-ups shall be tacked on one side only.底板只能在一侧点焊。 1.3 α= 50° to 70°α= 50°－ 70° b=2to4mm b=2－4mm c=2to4mm c=2－4mm with cap pass有盖面焊道 1.4 t1 = 1/3 t αl = 50° to 70°αl = 50°－ 70° α2 = 40° to 60°α2 = 40°－ 60° b=0to4mm b=0－4mm 1.5 To have root penetration具有Only 根部熔深 permitted with plasma arc welding只允许采用等离子电弧焊 1.6 Not permitted in the shell area (refer to 1.7)在壳体区不允许（参照1.7） 1.7 Lap joint In the area of the connection to the shell与壳体连接区的搭接焊缝 Oct 2001200110月 No.序号 2.1 Mantel壳体 Boden 底板 2.2 2.3 Detail 详图 ，年
RPI 94/1 Annex 8.5 Page 5 of 11
附录8,5，第5页（共11页）
Application应用 Requirement(s) 要求 Remarks 备注 2. Bottom to Shell底板与壳体 Seam in contact with (Mantel = Shell壳the product to be 体) welded first.与产品接触的焊缝应先焊。 (Boden = Bottom底板) α= 45° to 60°α= 45°－ 60° b=2to4mm b=2－4mm α= 45° to 60°α= 45°－ 60° To have root penetration具有根部
熔深
RPI 94/1 Annex 8.5
Page 6 of 11附录8,5，第6页（共11页）
Oct 2001月
No.序号 3. Shell壳体 Vertical welds (4) shall be executed prior to horizontal welds (5).立缝（4）应在焊接水平焊缝（5）之前焊 3,1 3.2 α = 45° to 60°α = 45° － 60° b=2 to 4 mm b=2 － 4 mm with cap pass有盖面焊道 b1= 0 to 4 mm b1= 0 － 4 mm α1= 45° to 60°α － 1= 45° － 2= 45°t2 = 1/3 t 3.3 α1= 20° to 45°α1= 20° － 45° α2= 0 to 10°α2= 0 ，
2001年10
Detail详图 Application应用 Requirement(s)要求 Remarks备注 60° 60° α2= 45° to 60°α－10° b=2 to 4 mm b=2 －4 mm with cap pass有盖面焊道 3.4 b=2 to 4mm Where the wall (innen = inside内b=2 4mm － thickness is 侧) unequal the shell sections shall be α1= 30° to aligned on the 60°α1= 30°inside.当壳体壁－ 60° α2= 30° to 60°α2= 30°－ 60° 3,5 b=0 to 4mm To b=0 4mm have root Preferred welding processes:较好的焊接方法： - Plasma arc;等离子弧焊； - Submerged arc;埋弧焊 - TIG on both sides双面钨极氩弧焊 - Simultaneously 组合方法 － penetration 具有根部熔深 板壁厚不相等时，应在内侧对齐。