Automatic girth welding



BYGGING submerged arc AUTOMATIC GIRTH WELDING (AGW) machine for SINGLE SIDE WELDING suitable for horizontal welding of tanks built “TOP-DOWN”

 

Salient Features:
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  • Make of Power Source & Wire Feeder - Lincoln Electric, USA.
  • Weatherproof Electrical cabinet.
  • Robust DC motor for tractor movement.
  • Auto flux recovery unit.
  • Fine adjustable manual cross slide for vertical & horizontal adjustment.
  • Weld head slide assembly.
  • Auto sensor for wire feeder speed.
  • Flux stored in Flux Recovery Unit as well as in Flux discharge hopper.
  • View glass in flux hopper & in Flux Recovery Unit
  • Same Power Source can be used for root welds and for FCAW / MIG / SMAW vertical welds.
  • Two or more FCAW / MIG / SMAW welding heads can be used using one Power Source (by using Multiweld 350) which increases vertical welding productivity by more than double.
  • Same mechanism can be used for Arc gouging.
  • Ambient temperature range at which the machine can work : -5 to + 65 deg C.
  • Machine is compact, light weight & can be handled without the need for a large crane.
  • Root welding with backing strip possible
  • Bygging AGW does the work equivalent to 6 welders

Technical Specification:
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Welding plate width : For first / top shell - Min. 800mm
For subsequent shells - No restriction.
Tank diameter : Suitable for tanks more than 8 mtr in diameter.
Welding current : From 250 Amps Upto 1000 Amps at 100% duty cycle.
Output Voltage : 44V
Welding Speed : 250 mm to 700 mm/min
Idle Travel Speed : Upto 1000 mm per minute.
Wire diameter : 2.4 / 3.2 mm / 4 mm
Weight of Welding head : 216 kgs (approx.) without flux & wire spool.

Submerged arc auomatic girth welding machine for double side welding on API 650 storage tanks, double side AGW
Rail for 2G position submerged arc automatic girth welding machine (AGW) fixed to tank shell using magnets, no welding of temporary cleats required to the tank shell
Bygging submerged arc automatic girth welding machine (AGW) running on a rail fixed to spacer beams, in use at ETT (VTTI) Europoort Rotterdam
Welding of circumferential  joints of storage tanks using submerged arc automatic girth welding machine; tank jacking and automatic welding solutions for storage tanks
Rail for submerged arc AGW fixed to spacer beams, bottom rail mounted automatic girth welding machine for horizontal welding on tanks
Bygging double side submerged arc automatic girth welding machine (AGW) in use for LNG storage tank at Adani Total Gas, Dhamra port, Odisha, India
2G weld bead produced by Bygging sumberged arc automatic girth welding machine (AGW)
Bygging SAW girth welder running on a rail fixed to tank shell using permanent magnets
Bygging automatic girth welding machine using submerged arc welding process (under powder welding)
Bygging SAW girth welding machine in use for tank welding at VTTI Vasiliko Tank Terminal in Cyprus, 2G weld bead produced by Bygging AGW
Bygging submerged arc automatic girth welding machine running on a rail fixed using cleats to the tank shell, VTT Vasiliko Terminal in Cyprus
Submerged arc welding using automatic girth welding machine for horizontal welding on storage tanks and absorber / scrubber tanks with C276 liner
Rate of deposition of weld metal is 6 kg per hour using Bygging sub-arc automatic girth welding machine for tank welding
Multiple weld passes on a 40 mm thick plate using Bygging sub-arc automatic girth welder, welding procedure qualification record (PQR) prepared at Bygging's factory
Welding PQR in progress using double side submerged arc automatic girth welding machine at Bygging Infrastructure's factory in Navi Mumbai, India