Repair Repair

Repair of GTE components

Our processes

The basic principle of LLC “Paton turbine technologies” in development and implementation of GTE components repair is to restore the entire complex of product properties affecting reliability and lifespan during operation. In this regard, the mandatory technological components of the repair process flow include operations on restoration of the product geometry (grinding, build-up, high-temperature brazing, etc.) as well as operations on restoration of base material properties (heat treatment, hardening).

Grit blastingGrit blasting
The operation is performed to remove scale and coating residues prior to repair, preparation for high-temperature brazing and coating deposition. Various abrasive materials based on silicon carbide and aluminum oxide are used.

Heat treatment in airHeat treatment in air
In order to prevent recrystallization of the product material surface, vacuum heat treatment of components is performed in air electric furnaces. Equipment is also used for evaluation of completeness of coating residues removal.

Vacuum heat treatmentVacuum heat treatment
It includes: homogenization (including accelerated argon cooling), annealing (diffusion, removal of welding stresses, softening), high-temperature brazing, etc. The furnace is NADCAP certified as per AMS 2750.

Vacuum brazingVacuum brazing
It is performed to eliminate casting defects, cracks, restore geometry. Composite solder systems based on high-temperature materials, including the systems developed by our company are used.

Electric discharge machiningElectric discharge machining
It is used to burn perforation holes in the parts and swirl vanes, form the blade airfoil tip after restoration build-up.

Manual grindingManual grinding
It is used to eliminate shallow defects after operation preserving the airfoil profile geometry and before coating deposition to provide appropriate surface finish.

Microbead peeningMicrobead peening
It is carried out to increase the strength of the blade root and densify coating. The process is automated and allows simultaneous processing from six guns.

Hydroabrasive treatmentHydroabrasive treatment
It is performed for local cleaning of component surfaces subject to meet the strict surface finish and material removal requirements and is mainly used to clean the blade roots.

Welding/build-upWelding/build-up
It is implemented for nickel and cobalt-based superalloys by heat-resistant and high-temperature materials in shielding gas atmosphere by nonconsumable electrode. The company has developed the method of monocrystalline alloys build-up by wear-resistant heat-resistant materials.

MachiningMachining
It is implemented for nickel and cobalt-based superalloys by heat-resistant and high-temperature materials in shielding gas atmosphere by nonconsumable electrode. The company has developed the method of monocrystalline alloys build-up by wear-resistant heat-resistant materials.

Nondestructive testingNondestructive testing
It includes: penetrant inspection, eddy current testing, surface finish analysis, material hardness and microhardness test.

Special methods of repairSpecial methods of repair
They consist in restoration of the part airfoil (profile) with the use of electron-beam technology. Both blade leading edge and airfoil tip can be restored.

Certifications

  • ISO 9001
  • ISO 14001
  • AS 9100
  • NADCAP Certificate
  • FAA Certificate #PP3Y475X

Products and Services

  • Thermal Barrier Airfoil Coating
  • Repair of Aero and IGT parts
  • Development and Manufacturing of EB PVD Equipment
  • Research and Development of New EB PVD Technologies
  • Manufacturing of Ceramic and Metallic Ingots

EH&S

PolicyEnvironment, Health & Safety Policy