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Solvay La Rochelle – France

A rotating tube section replacement was avoided thanks to Novexa

Wear due to seizure of a filter tube bearing element was found. This fault results after years of operation, therefore preventing the mounting of a new bearing without altering it.
A recognised specialised in on-site reloading and machining, Novexa was selected by Solvay. Our commitment combines a reprofiling guarantee and respect of a very short response time.

Finishing passes on the 2 intervention areas respected a roundness under 0.03mm and a maximum roughness of 0.8 The Novexa welder can work alone. He can also be assisted by a local operator to reduce costs. Reloading is finished. A pre-adjustment was performed with a portable grinder. Our special machines enable machining in all circumstances (the rotation is the only constraint).
Finishing passes on the 2 intervention areas respected a roundness under 0.03mm and a maximum roughness of 0.8
The Novexa welder can work alone. He can also be assisted by a local operator to reduce costs.
Reloading is finished. A pre-adjustment was performed with a portable grinder.
Our special machines enable machining in all circumstances (the rotation is the only constraint).

A multiphase operation

  • removal of the protective housing and access to the shaft
  • reloading the shaft with a stainless steel rod (2mm thick)
  • reassembly of a support to ensure the rotation
  • machining of the shaft with a tolerance of 0.03 mm roundness

A 5-day intervention

The entire operation was carried out in 5 days in 1 shift per day, the deadline was not a requirement.
Novexa has the means, without subcontracting, to deal with sites, including audits, reloading, machining, adjustments.

Solvay La Rochelle, by reducing downtime and accepting on-site repair, consolidated the reliability of its filter tube and assured the return to production without the risk of new seizure on starting.

Advantages for our client

  • 0,03 mm tolerance with on-site machining (flatness and concentricity)
  • 12 month guaranteed, with application of Perma rods
  • Ensuring more reliable production and limitation of risks

Novexa’s offer

Experts in rotative equipment wear management (gears and tires)

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