SURFACE TECHNOLOGIES

PROBLEMS WE SOLVE

Component failure is usually due to a sequence or combination of events which can initiate from the design and choice of materials through to manufacturing processing and assembly including the application of heat, welding and grinding, as well as machining and distortion of the part due to bending, rolling or forging. In services conditions can also contribute to the failure of a part such as variation in temperature and environmental conditions, uneven, high or low cyclic loads or stress profile, compression, torsion and bending as well as foreign object damage. Matching the maintenance needs of the component to its operating conditions and environment is also important to reduce the effects of aging and wear.

Curtiss-Wright Surface Technologies supports every stage of the manufacturing process from design and new manufacturing, to material testing and analysis through to in service maintenance, metal repair and overhaul of components – our metal repair and component protection services increase the strength and performance of parts and reducing costs and downtime.

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What Causes

The table below gives a brief overview of typical components that we process, what failures they are susceptible to and the component protection available to prevent failure. Note: Failure Modes and Solutions may be relevant for some or all of the components.

For materials characterization or failure analysis, contact IMR Test Labs

Aerospace-Engines

Blade Roots
Blade Roots
Air Foils/Blisks/IBR’s
Air Foils/Blisks/IBR’s
Compressor Airfoils
Blisks/IBR’s
Air Foils/Blisks/IBR’s
Labyrinth Seals
Air Foils/Stators
Turbine Discs
Fuel Nozzles
Combustion Liners
Turbine Blades
Turbine Blades
Turbine Shrouds
Bearing Seals
Carbon Seals
Compressor Cases
Tie Wire Holes
Propeller blades
Transmissions, Gearing
Transmissions, Gearing
Hydraulic Systems
High Temperature Fasteners
Engine Fuel Pump Bearings
Inconel/Stainless Steel / Aluminum Base Materials
Airfoils / Stators
Airfoils / Stators
Filters / Oil Separators

Failure modes

Fretting/Galling
Fretting Fatigue
Fatigue
Contact Fatigue
Corrosion Protection
Clearance Control
Foreign Object Damage
Clearance Control
Erosion/heat protection
Fretting Fatigue
Wear
Thermal Fatigue
Thermal Fatigue
Clearance Control
Clearance Control
Wear
Wear
Clearance Control
Fatigue
Fatigue
Fatigue/Pitting
Bending Fatigue/Pitting
Corrosion
Torque/Tension, Galling  
Friction / Wear
Stress Cracks / Durability

Gap Control / Joining / Assembly
Gap Control / Joining / Assembly
Gap Control / Joining / Assembly

Aircraft Structure

Wingskin Forming
Wingskin
Wingskin
Stingers, Spars,Bulkheads,etc.
Stringers,Spars,Bulkheads,Skins
Fasteners
Fasteners
Landing Gear
Landing Gear
Landing gear
Landing Gear
Composite Components
Printed Circuit Boards
Mechanical Components (splines, actuator shafts, hydraulic fittings)
Ballscrew Gimbals
Slat Tracks
Flap Tracks
Helicopter Rotors
Brackets
Helicopter Rotating Parts
Helicopter Rotating Parts

Failure modes

Shape correction
Fatigue
Stress corrosion/exfoliation
Fatigue/Stress Corrosion
Fatigue debit from coatings
Torque/tension
Lightning Strike
Foreign Object damage
Stress Corrosion cracking
Fatigue debit from hard chrome
Replace Hard Chrome
EMI / RFI Shielding
Conformal Barrier

Friction, Wear, Galling

Wear
Wear
Wear
Friction / Tension
Wear
Metal Fatigue
 Foreign Object Damage (FOD)

Automotive

Connecting rods
Crankshafts, fatigue
Crankshafts, fatigue
Valve Springs, fatigue
Rocker Arm, fatigue, wear
Gears
Shafts
Suspension components
Various components
Frames/Weldments
Springs
Fasteners
Fuel Injection System
Turbocharger
Turbocharger

Failure modes

Fatigue cracking
Fatigue cracking
Fatigue cracking
Fatigue cracking
Fatigue cracking
Bending/contact fatigue
Torsion fatigue splines
Fatigue cracking
Galling
Stress Corrosion Cracking
Lubricity/BSR
Torque/Tension/Corrosion
Fatigue/Stress Corrosion Cracking
Fatigue
Clearance Control

Gas and Steam Turbines/Power G.

Blade Roots
Blade Roots
Air Foils
Air Foils
Compressor Airfoils
Compressor Diaphragms
Compressor Diaphragms
Combustion Liners, Tranitions
Turbine Airfoils
Turbine Shrouds
Air Foils
Air Foils
Air Foils
Rotors/fir trees
Rotors/fir trees
Rotors/fir trees
Rotors/fir trees
Steam Turbine Blades
Steam Turbine Diaphragms
Rotors
Rotors
All Components
Blade Seals and Guides
Fasteners
Pelton-/Francis Turbine
Gears
Turbine Vanes / Blades
Turbin Vanes / Blades

Failure modes

Fretting/Galling
Fretting fatigue
Fatigue
Cavitation erosion
Corrosion Protection
Corrosion Protection
Clearance Control
Thermal Fatigue
Thermal Fatigue
Clearance Control
Cavitation erosion
Water droplet erosion
Water droplet erosion
Fretting
Fretting/Galling
Dimensional Restoration
Fretting fatigue
Solid Particle Erosion
Solid Particle Erosion
Stress Corrosion
Fatigue
Stress Corrosion Cracking
Friction/Wear
Torque/Tension/Galling/Corrosion
Fatigue/Water Droplet Erosion
Bending/contact fatigue
Fatigue
Compression / Strength Improvement

Industrial: Oil/Gas/Chemical/Mining

Weldments/Structures
Weldments/Structures
Valves/Connectors

Metal seated ball valves

Gate valves
Catalyst valves
Compressor cylinders
Valve stems
Extrusion screws/barrrels
Rotors
Autoclave mixers
Earthmoving eq
Rotors/drums/rolls
Natural gas compressor liners, con rods, stems,
Shafts/Gears
O Rings
Flapper Valves/Seals

Failure modes

Fatigue/Stress Corrosion
Environmental Corrosion
Erosion/Cavitation

Corrosion/Erosion

Corrosion/Erosion
Corrosion/Erosion/Oxidation
Friction/wear
Friction/wear
Erosion/abrasion/corrosion
Erosion/abrasion/corrosion
corrosion/erosion
wear
wear

Friction/wear

Fatigue/Stress Corrosion
Conformal barrier
Fatigue

Medical

Hip/Knee implants
Screws/Brackets
Stents/Catheters 

Failure modes

Fatigue/Fretting
Fatigue/Stress Corrosion
Conformal barrier/Friction

Electronics

Printed Circuit Boards 
Wearables
Fixtures

Failure modes

 Wear
 Wear
Wear

solutions

Additive Manufacturing

 
 
 

Failure modes

Metal Fatigue 
Rough Surface Finish
Surface Densification                        

solutions

Shot Peening / Laser Peening
Shot Peening / Dual Peening
Shot Peening / Dual Peening
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