CENTRATOR -BG MANUAL OPERATION INTERNAL ALIGNMENT & PURGE GAS EQUIPMENT FOR Tig ,PIPE_WELDING PETROCHEMICAL NUCLEAR AEROSPACE FOOD & BREWERY PROCESS INDUSTRIES Operation :- By turning the central actuating handle, two sets of conical fingers are drawn together forcing the backing ring segments radially into the bores of the pipes to be aligned. Strong clamping forces hold the pipes firmly in close abutment permitting welding to take place without the need for tacking. Pipes with wall thickness upto 5% of pipe diameter are rounded and pipes upto 12 Metres in length can be welded by adding standard extensions. Backing Ring Segments:- Standard replaceable backing ring segments are made of stainless steel - Gas Purging:- Argon or Helium purging gas is fed into the purge gas manifold and distributed through gas pipes to each individual segment. Purge gas is concentrated at the underside of the weld, purging is rapid and welding can start immediately. * Low gas flow rate and pressure avoids blow back and 1-2 lit/min is sufficient to provide shielding. *(per inch of pipe dia) Ref No 11.
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Operation :-By turning the central actuating handle, two sets ofconical fingers are drawn together forcing thebacking ring segments radially into the bores of thepipes to be aligned.Strong clamping forces hold the pipes firmly in closeabutment permitting welding to take place withoutthe need for tacking.Pipes with wall thickness upto 5% of pipe diameterare rounded and pipes upto 12 Metres in length canbe welded by adding standard extensions.
Backing Ring Segments:-Standard replaceable backing ring segments aremade of stainless steel -
Gas Purging:-Argon or Helium purging gas isfed into the purge gasmanifold and distributed through gas pipes to eachindividual segment.Purge gas is concentrated at the underside of theweld, purging is rapid and welding can startimmediately. *Low gas flow rate and pressure avoids blow back and 1-2 lit/min is sufficient to provide shielding.*(per inch of pipe dia)
Ref No 11.
SPECIFICATION :-
\HEAD ASSEMBLY
WHEELED SUPPORT SPIDER
EXTENSION ASSEMBLY
I~ ~---------~----------~
= __ ..r'~--------- ----------- --
CENTRATOR-BG HEAD UNIT COMPLETE ACTUATOR ASSEMBLY EXTENSION ASSEMBLYWHEELED
SIZE OPERATING MINIMUM 0.5Met 1.0Met 2.0Met 1.0Met 2.0Met 4.0Met SUPPORTmm RANGE mm DIA.mm LONG LONG LONG LONG LONG LONG SPIDER
CENTRATOR UK LTDUNIT A, ALBION ROADSILEBYLEICESTERSHIRELE12 7RAENGLANDTelephone: +44 (0)1509 814626www.centrator.com
Pipes within the 10% Operating Range are Welded. Additionalcollapse to Minimum Diameter is provided to enable Head Unit to bewithdrawn past penetration.
Conical fingers act independently ensuring pipes with different boresare acccurately aligned.