Novexa 55 rue Linné 26500 Bourg les VALENCE
Contact us+33 (0)4 75 25 14 18 France

Welding

Our welding activity includes the following:
- Welding repairs (on gears and tires)
- Ring replacement and tire shimming
- Repair of cracks on shells and mill trunnion ends

Welding repair

NOVEXA offers their skills in the following cases when repairs are necessary:

  • Cracking on gears’ tooth base
  • Tooth breakage on gears, whatever their hardness up to 60 HRC

Method: preheating at 150°C maximum, regular reswage, Inconel PERMA stick, preheating if Arcair Machining of the teeth following NOVEXA procedures, accuracy 0.1 mm

  • Breakages or cracks on tires and rollers
  • All types of cracks or breakages on girth gear junctions, roller sides, rim, others.
  • Repair of cracks on shells and mill trunnion ends

Gears are never beyond repair. One or several broken teeth can be changed and have a long-term durability.

Ring replacement and shim welding

Our teams are trained on complete refurbishment of rotative tubes:

  • Setting sticks be they basic, steel, inox, inconel
  • Use of stick procedure or semi-automatic
  • Supply of rings, stops, shims
  • Backlash measurement and geometrical deformation

Crack repair on shells and out of round defects on ball mills.

We have many references for thimble repairs and mills' bottom end. The applied procedures are very strict in order to limit, even avoid, geometrical deformations.
We can organise our resources in 3 times 8 hours or 2 times 10 hours in order to reduce intervention times.

Novexa's offer

Experts in rotative equipment wear management (gears and tires)

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Our teams are at your disposal.
Enquire with our experts

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