Welding

Repair welding

One of our special competencies is the repair welding of large pieces. The process varies from case to case. Our experts analyze the materials to be repaired, survey damages, and plan a repair procedure for the work.

Welding coating

Welding coating is used when a piece is badly worn or requires a new, wear-resistant surface.

Improving abrasive, erosive, and corrosive wear resistance

Several industrial devices require materials to protect them from intensive wear or corrosion. Telatek Service has developed suitable coatings for various uses, designed to prevent abrasive, erosive, and corrosive wear. Thanks to an extensive selection of welding materials and coating methods, we can select the optimal coatings method for your needs.

PTA welding

PTA welding is proof of our continuous process development. PTA welding has a narrower and more efficient arc than traditional welding. It also transfers less heat to the piece, minimizing the HAZ zone. This is beneficial in e.g. the repair welding of crusher axles, where the worn and damaged surface is filled back to its original dimensions.

This method also enables efficient welding of Inconel alloys, carbides, and stellites in e.g. valve surfaces.

Typical welding applications include

  • Steam and gas turbine sealing surfaces
  • Turbine housings and inner housings
  • Turbine blades and labyrinths
  • Crushers
  • Mills and drums
  • Axles
  • Coatings of pump rotors, housings, suction, and pressure ends (stelliting)
  • Coatings of valve sealing surfaces and shanks
  • Autoclaves
  • Reactors
  • Boilers
  • Filters
  • Cyclones
  • Feeding and conveyor screws
  • Fan parts
  • Steam preheaters (nuclear power plants)
  • Power plant boiler repair and coating
  • Coatings of valve sealing surfaces and shanks
  • Offshore and onshore structures
  • Machine rolls and cylinders
  • Wind turbine foundation steel structures, bearing and sealing surfaces
  • Chemical tanks
  • Pulleys
  • Heat insulation and heat seal coatings (zirconium oxides)
  • Electrical insulation coatings (aluminium oxide)
  • Electromagnetic interference protection (Zn, Al, Sn)
  • Other wear, erosion, and corrosion damage repairs
  • Improving abrasive, erosive, and corrosive wear resistance
  • Autoclaves
  • Reactors
  • Boilers
  • Filters
  • Cyclones
  • Other wear, erosion, and corrosion damage repairs
  • Improving abrasive, erosive, and corrosive wear resistance

valves, pumps, shafts, spindles, and screws, as well as bearing and sealing faces.