Blade Recovery
Blade Recovery Heat Treatments:
As the official OEM overhaul facility, RWG is the industry leader worldwide with over 6,000 Turbine blade sets refurbished to date.
EC&T division uses its proprietary Recovery Heat Treatment Process to fully recover turbine blades back to the ‘as-new’ condition. This service is considered to be vital to the refurbishment process and is carried out as standard on turbine blades.
In contrast to the limited warranties offered by other heat treatment vendors, our recovery process is fully included along with all other overhaul activity under the RWG engine overhaul warranty scheme.
The RWG Materials Laboratory fully supports the EC&T division and its recovery heat treatment processes by carrying out microstructural overheat and creep void assessments using OEM approved laboratory specifications. RWG has a long track record of blade examinations and this knowledge is especially important with, for example, RB211 ‘G’ Rated HP and ‘C’ Rated IP turbine blade sets now being refurbished with over 75,000 and 100,000 running hours respectively, being recorded.
We have the full capability to perform OEM approved recovery heat
treatment cycles on all service-run turbine blade material including
Nimonic, Incoloy and Marm-002 (DS and equiaxed) alloys.
This effectively covers HP, IP and LP Turbine blades used in all RB211, Avon and Olympus engines.
Our recovery heat treatments ensure that microstructures are returned
to an 'as-new' condition that will take turbine blades comfortably
through to the next scheduled overhaul, producing an 'as-new' rating
relative to the previous service run.
To prove the benefits of these heat treatments - E&CT Division commissioned a verification exercise with a major independent laboratory using Marm-002 (DS and equiaxed) material.
Component Repair
The Rolls Wood Group Component Repair Division was established in November 1992 to provide a dedicated component repair service for the Rolls Wood Group engine Projects. The facility provides an in-house capability for over 90% of the repair processes required for the Rolls-Royce RB211, Avon, Olympus and 501 gas generators.
The Component Repair Division operates from 2 site locations in Aberdeen, Scotland (Wellheads and Kirkhill) and is designed around a 'cellular production' concept, with 3 distinct production zones established to enhance the quality and turn-times of the components being processed.
The Wellheads site incorporates approximately 22,000 sq feet of floor space and the Kirkhill site covers a space of 14,000 sq feet.
The Repair Division Capabilities are as follows:
- Thermal Spray Systems:
HVOF Sulzer Metco DJ 2600/2700
Plasma - F4 and F4 90 Deg
Flame - 6P11 Abradables.
- Hot End Coatings:
Sermaloy J
- Machining:
Vertical Boring, Turning, Surface Grinding, Milling, Drilling, Creep Feed Grinding and Salvage Fitting.
- Protective (Paint) Coatings:
SermeTel W, Teflon, Polymide, Epoxy Resin, LHRSE, HHRSE & Dense Pack.
- Inspection:
Fluorescent Dye Penetrant, Dimensional, Visual and Ultrasonic turbine blade wall thickness inspections.
- Calibration Department
- Welding and Brazing:
TIG Welding, Arc Welding, Acetylene Gas Welding, Torch Brazing, Resistance Welding Spot, Seam & Circumferential & Dot riveting.
- The Laboratory supplies a comprehensive quality control service for all production activities.
- Metal Forming:
Polishing, Hand Grinding and Fettling, Hydraulic Presses and Shears, Belt Sanding & Superpolishing.
- Chemical Treatment:
Chromate Conversion Coatings. Ferric Chloride etch, Nitric Acid Stripping of Braze & Abradables, Stripping of Platinum Aluminising and Sermaloy J, HVOF, Plasma & flame spray coating.
- Heat Treatment:
Degussa, Vacuum and Carbolite Furnaces perform Solution, Brazing, Ageing and Diffusion Heat Treatments and the Curing of Protective Coatings.
- Plating:
Selective Plating Process - Silver, Copper 7 Nickel Cobalt.