Steam Turbine Repair

Stellite® delamination, valve wear, journal wear, and dimensional loss from repeated outages cause steam turbine components to fail early. HFW rebuilds these parts to spec, backed by our ISO 9001:2015 certification and electrical mechanical runout (EMRO) measurements when needed.

HFW also accommodates emergency steam turbine repair requests. A power generation OEM once needed a component 13 days earlier than planned for its customer, one of the largest oil refining companies. HFW moved up the schedule and shipped a week ahead of the already-expedited date.

Have a component on an urgent timeline?
RFQ@hfwindustries.com | (716) 875-3380

Stellite Delamination Stopped for at Least Five Years

A large southeastern utility contacted HFW after Stellite delamination on steam turbine valve discs and seats made from chromium-molybdenum steel. The valve stems were made from an iron-base superalloy.

HFW controlled preheat, interpass temperature, post-weld cooling, and LP/UT inspection. The repair prevented repeat delamination for at least five years, a result driven by process discipline across welding, machining, and inspection rather than the coating material alone. Read the delamination case study.

Facing repeat delamination or premature valve wear?
RFQ@hfwindustries.com | (716) 875-3380

Steam Turbine Repair for Critical Components

When choosing among steam turbine repair companies, it's important to consider the entire manufacturing or repair workflow. Utilities, OEMs, and repair organizations turn to HFW when a critical component needs more than a single operation.

• Complete machining for steam turbine components that need coordinated repair or manufacture
• Thermal spray coatings, hardfacing, and weld overlay for wear, corrosion, or fit restoration
• Precision grinding to final size, finish, and fit requirements; tolerances as tight as 0.0002"
• EMRO inspection, TIR checks, and quality documentation

That coordinated workflow gives reliability, planning, and procurement teams one supplier for steam turbine parts repair, where coating, machining, grinding, and inspection all affect the outcome.

Have a component on an urgent timeline?
RFQ@hfwindustries.com | (716) 875-3380

Valves, Rotors, Shafts, Housings, and Wear Surfaces

Our one-source capabilities make HFW a premier turbine repair company that can handle various components:

• Steam Turbine Valve Repair
  • Valve discs, seats, stems, and hardfaced surfaces rebuilt with controlled welding, including Stellite 6 overlays.
• Rotors, Shafts, and Journals
  • Steam turbine rotor repair and shaft work with machining, HVOF coating, precision grinding, EMRO inspection, and TIR checks.
• Blades, Buckets, and Wear Surfaces
  • Steam turbine blade repair, bucket repair, and small wear-surface rebuilds using coating, finishing, and final inspection.
• Seal and Bearing Housings
  • Seal housings and bearing housings repaired or manufactured with bore restoration, coating, machining, and dimensional verification.
• Balance Pistons and Labyrinth Seals
  • Balance pistons, rotating labyrinth seals, shaft sleeves, and spacers restored or manufactured for clearance control and fit-critical service.
• Bushings, Couplings, and Parts
  • Steam turbine components repair for bushings, couplings, ancillary parts, and assemblies that need one accountable supplier.

Ready to discuss a steam turbine repair?
RFQ@hfwindustries.com | (716) 875-3380 | Request a Quote

Additional Technical Resources for Turbomachinery Professionals

Sign up for our newsletter and explore these resources from our Knowledge Base:

• How Does HFW Serve the Turbomachinery Industry?
  • Learn about HFW's one-source repair and manufacturing strategy for turbines, rotors, and other turbomachinery equipment
• Emergency Turbomachinery Repair
  • See how HFW can improve the reliability of your turbomachinery and cut downtime when it matters most
• Hard Chrome Plating Alternatives: Why Industry Is Turning to HVOF
  • See why HVOF is the proven replacement as tightening regulations are accelerating the move away from hard chrome plating
• Managing the Tungsten Carbide Shortage in 2026
  • Learn about recent market conditions and understand alternative, cost-effective coatings
• How HFW Extends Equipment Life
  • See a real-world example of innovation in action: 30x increase in service life for a chemical client
• Reducing Assembly Time by 75% at 1/3 the Cost
  • Learn how HFW's one-source strategy can streamline our customer's processes and rein in costs
• Overview of Thermal Spray Coatings: HVOF & Tungsten Carbide
  • Why these materials are key to high-performance surface protection
• Precision Grinding Services at HFW
  • A look inside our plant, detailing HFW's precision grinding services such as CNC grinding
• What are HFW's Hardfacing Capabilities?
  • Explore how HFW’s hardfacing expertise restores industrial equipment with proven weld procedures and precision inspection

About the Authors: Matt Watson has spent more than 30 years as a thermal spray applications and materials specialist, helping industrial customers work through wear, erosion, abrasion, and coating-performance problems that don't have off-the-shelf answers. Nolan Watson writes about reliability, repair strategy, and steam turbine components for HFW Industries, translating what happens on the shop floor into practical guidance for maintenance and reliability teams.

Frequently Asked Questions

How does HFW repair steam turbine valve components?

HFW rebuilds valve discs, seats, and stems using controlled hardfacing, including Stellite 6 overlays. Preheat, interpass temperature, and post-weld cooling are controlled throughout, and repairs are inspected with liquid penetrant and ultrasonic testing before a component returns to service.

What causes Stellite delamination on turbine valve components, and how does HFW prevent it?

Delamination can be caused by inconsistent preheat, interpass temperature, or post-weld cooling during the original hardfacing process. HFW controls all three throughout the repair and inspects the finished surface with LP and UT testing, an approach that stopped repeat delamination for at least five years on a documented steam turbine repair.

Can HFW manufacture steam turbine components, not just repair them?

Yes. HFW can manufacture and repair valve discs, seats, stems, rotors, shafts, journals, blades, buckets, and housings using the same machining, coating, and grinding capabilities, whether the part is being restored or built to spec from scratch.

What is EMRO inspection, and why does it matter for turbine components?

Electrical mechanical runout (EMRO) inspection verifies a component's total indicated runout (TIR) after machining, coating, or grinding. For fit-critical steam turbine parts like turbine shafts, EMRO confirms the finished part meets dimensional tolerance before it goes back into service.

How fast can HFW turn around an urgent steam turbine repair?

Turnaround depends on scope, but HFW can compress schedules to meet urgent deadlines. In one case, an OEM needed a turbine component 13 days earlier than planned for a refinery customer, and HFW shipped the part a week ahead of the already-expedited date.

Does HFW work directly with OEMs and repair organizations, or only end users?

Both. HFW supports utilities, OEMs, and repair organizations, often as the manufacturing and repair partner behind a component that ships under another company's name.

Attribution Statement

• Stellite® is a registered trademark of KENNAMETAL INC.