Turbines
Introduction
TECHNOSERVICES is a professional solution provider for turbine and rotating equipment refurbishment through innovation, quality and customer-centric solutions, We speciaize in comprehensive maintenance and restoration of turbine components to ensure peak performance and reliability, through innovative and cost effective solutions that enhance equipment reliability, extend operational life and reduce downtime. We also offer special coatings to extend life of turbine blades.
Turbine Repair Services :
With over a decade of experience we supply industrial steam turbines up to 100Megawatt Electric (MWe) and refurbish rotating equipment. We offer steam turbine solutions for Industrial Captive and Renewable Power. Our products are high-tech and precision engineered-to-order.n We provide a comprehensive range of solutions by combining product and aftermarket services across the entire lifecycle of the Steam Turbine Generator (STG), through a committed staff of
highly qualified and experienced industry experts. Our experienced and qualified engineers allow us to meet the aftermarket requirements of customers for any brand.
1.Rotor and Casing Repairs :
Precision repair and refurbishment of turbine rotors and casings to restore integrity and efficiency.
Scope : Crack repair, metal build-up, machining to restore concentricity, balancing and surface finish restoration.
Process : NDT (visual, dye-penetrant, ultrasonic) → weld metal build up with compatible filler → stress relief heat treatment if required → finish machining to original geometry → dynamic balancing. Blade Reconditioning, Replacement and Profiling
Key deliverable : Restored run out and concentricity to OEM or agreed tolerances. Field repairs (rotor-in) are possible for journals and some rotor work to reduce outage time.
2.Blade Reconditioning, Replacement and Profiling :
Precision repair and refurbishment of turbine rotors and casings to restore integrity and efficiency.
Reconditioning of worn blades : Erosion/corrosion removal, crack repair, tips restoration, shot-peening or
peening for residual stress improvement.
Replacement with high quality parts : supply of OEM equivalent blades or upgraded alloysfitcheck and dovetail attachment refurbishment.
Profiling of optimal aerodynamic performance : Aerofoil recontouring to restore lift/efficiency. Final inspection with 3D scanning and profile comparison to baseline. Blade balancing and tip clearance verification after reinstallation.
3.Bearing Journal Rebuilding :
Restoring journals to original specifications for smooth and reliable operation.
Options : Metal build-up (welding or thermal spray), machining to nominal diameter, or
insitu machining with location on bearing halves for rotor-in repairs.
Controls : Restore journal roundness, taper and surface finish to specified Ra and geometric
tolerances, re-establish oil film clearances per bearing specifications. Field machining can
dramatically shorten outages when feasible.
4.Alignment and Clearances Corrections :
Ensuring precise alignment and proper clearances to minimize wear and maximize efficiency.
Activities : Shaft alignment (laser or optical), casing-to-rotor concentricity check, axial and
radial clearance measurement, shim or machining corrections.
Deliverables : Documented alignment reports, clearance maps and acceptance criteria tied
to OEM or plant standards.
5.Seal Restoration :
Repairing and restoring seals to prevent leakage and maintain system integrity.
Types : Labyrinth seals, Brush seals and Abradable coatings.
Work : Replace worn segments, recoat abradable surfaces, restore seal and land geometry
and verify leakage performance during commissioning.
6.Turbo Charger Repair Services :
Full We provide end-to-end solutions to restore turbochargers to peak efficiency and reliability Complete Dismantling and Inspection.
● Full disassembly of the turbocharger unit.
● Detailed inspection of all components using visual checks, non-destructive testing(NDT)and Dimensional measurements.
● Identification of wear, cracks, erosion or imbalance issues
● Comprehensive inspection report with recommended corrective
actions.
7. Shaft and Rotor Repair :
● Precision machining and straightening of bent or worn out shafts.
● Journal restoration to OEM tolerances for proper bearing fit.
● Rotor crack repair, weld build-up and re-machining.
● Dynamic balancing of repaired rotors to ensure vibration free operation.
8. Compressor Wheel and Turbine Blade Restoration :
● Reprofiling of blades to restore aerodynamic efficiency.
● Crack detection and repair using welding techniques.
● Replacement of damaged blades with OEM or upgraded
materials.
● Surface treatment (shot-peening, polishing) to improve fatigue resistance
9.Housing Repair and Replacement :
● Restoration of compressor and turbine housings, through welding, machining and re-boring.
● Correction of erosion, corrosion and distortion.
● Replacement with OEM grade housings when repair is not feasible.
● Verification of concentricity, clearance and tolerances.
10. Dynamic Balancing to International Standards :
● High-speed balancing of rotors and assemblies per ISO/ANSI standards
● Correction of imbalance to minimize vibration and extend bearing life.
●Certification of balance quality with documented reports.
● Ensure compliance with international performance and safety benchmarks.
Deliverables :
● Restored turbocharger performance to OEM specifications.
● Reduced downtime through precision repairs.
● Certified inspection and balancing reports.
● Extended service life and improved reliability of equipment
Inspection, Testing and QA :
Repairing and restoring seals to prevent leakage and maintain system integrity.
NDT Suite : Visual, Dye-penetrant, magnetic particle, ultrasonic and bore-scope inspections
Dimensional Control : 3D scanning, CMM and run-out (bearing clearance gauges)
Dynamic Tests : Spin tests, Vibration analysis and thermography during run-up.
Documentation : SRepair reports, material certificates, weld procedures and post repair test.
Materials, Tolerances and Turnaround :
Repairing and restoring seals to prevent leakage and maintain system integrity.
Materials : Matching base alloys, high nickel weld consumables, abradable coatings and OEM grade bearing materials.
Typical tolerances : Journals to/within 0,01-0,05 mm roundness depending on machine class and clearances per bearing
specifications.
Turnaround : Field journal repairs can be completed within outage windows. Full shop
rotor rebuilds depend on scope(days to week).
Risk and Mitigations :
Repairing and restoring seals to prevent leakage and maintain system integrity.
Risk : Hidden Cracks or metallurgical changes after welding, improper clearances causing
bearing failure.
Mitigation : Full NDT and post-weld treatment where required.. Precision machining, trial
assembly and oil film verification.
Safety, Standards & Compliance :
TECHNOSERVICES follows structured safety and quality procedures.
● ISO aligned quality system.
● Strict compliance with safety protocol.
● Environmental care and sustainable operations.
● Skilled technicians with ongoing training and certification
