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3 - 4 Shells Poles Production Process

How 3-4 shells poles become coupled and welded?


The realization of poles with diameter within 1000 mm e 2900 mm with thickness of 12 ÷ 30 mm, due to the high thickness, weight and blanks availability on the market, in term of length, is done through the resolution of the entire pole in more shells. For poles of such dimensions the optimal solution that take in consideration the handiness and blank optimization use is the pole resolution in 4 shells.
Poles resolution in 4 shells

The realization of these poles pass through 3 phases, upon blank cutting to measure and bending through hydraulic presses: Phase I: Referring, clamping and internal welding of the shells I and II and further the welding of the shells III and IV;
Composition shells I and II – Phase I

Phase II: Riferimento, bloccaggio e saldatura esterna dei gusci realizzati in fase I; Phase III: Completamento delle saldature interne ed esterne non realizzate nelle fasi I e II.
Composition shells III and IV – Phase I

The phase I is realized thanks to the use of referring and clamping station and thanks to a welding machine MIG/MAG for longitudinal path with telescopic arm. At the end of the phase I needs to weld manually on the pole internal side two supports that will reinforce the shells structure making easy the safety poles movement to the following station.
Pole composition – Phase II

The phase II is realized thanks to a referring / clamping station and a SAW welding machine with telescopic arm. The phase III is realized thanks to the use of a referring / clamping station and thanks to MIG/MAG welding machine with telescopic arm to perform the pole internal joint welding path.
Pole finished – Phase III


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