Component Protection 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.Ìý Matching the maintenance needs of the component to its operating conditions and environment is also important to reduce the effects of ageing and wear.
ÁñÁ«ÊÓƵ¹ÙÍøÈë¿Ú Surface Technologies support every stage of the manufacturing process from design and new manufacture through to in service maintenance, metal repair and overhaul of components – our metal repair and component protection services increase the strength Ìýand performance of parts and reducing costs and downtime.
What Causes Component Failure?
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.
Aero-Engine
Blade roots
Air foils
Tie wire holes
Propeller blades
Turbine discs and blisks and drums
Rotating rings
Engine mounting brackets
PTO GearsFailure modes
Fretting
Galling
Fatigue
Contact fatigue
Corrosion
Stress corrosion cracking
Micro cracking
Foreign object damage
Erosion
Water droplet erosionSolutions
Controlled shot peening
Laser shock peening
C.A.S.E. isotropic superfinishing
Thermal spray coatings
Liquid coatingsAero Landing Gear
Failure modes
Foreign object damage
Temperature variation
Fatigue
Tensile stresses from hard chroming process
Stress corrosion cracking
Fretting
GallingSolutions
Controlled shot peening
HVOF WC coatingAirframe
Wing skins
Fasteners
Fuselage
Stringers
Spars
Bulkheads
BoltsFailure modes
Fatigue
Flexural bending fatigue
Stress corrosion cracking
Lighting strikeSolutions
Controlled shot peening
Shot peen forming
Laser peening
Laser peen formingConnecting Rods
Bore fillets
Feed rollers
Bearing races
Screw and oil holes
Contact faces
¸é²¹»å¾±¾±â€™sFailure modes
Residual compressive stress
FatigueSolutions
Controlled shot peeningCrankshafts, Camshafts, Axles
Crank pin bearing fillet
Keyways
Splines
Shear sections
Torsion bars
CV joint windows
Gears
Drive shaftsFailure modes
Ìý
Fatigue cracking
Contact fatigue
PittingSolutions
Ìý
Controlled shot peening
Laser Peening
C.A.S.E. isotropic superfinishingExhaust Stacks and Manifold Adapters
Flanges
Holders
WeldingsFailure modes
Ìý
Heat variationSolutions
Ìý
Controlled shot peening
Laser PeeningGas and Steam Turbines
Blade roots
Air foils
Diaphragm couplings
Rotors
Fir tree grooves
Locking nutsFailure modes
Fretting
Cavitation erosion
Water droplet erosion
Fatigue
Stress corrosion crackingSolutions
Controlled shot peening
Laser shock peening
Thermal spray – HVOF, Plasma and Flame sprayGears and Gear Systems
Fillet at root
FlanksFailure modes
Macro and micro pitting
Fretting
FatigueSolutions
Controlled shot peening
C.A.S.E. isotropic superfinishingMedical Implants
Hip joints
Medical screws
BarsFailure modes
Fatigue
Stress corrosion cracking
Fretting
Environmental attackSolutions
Parylene coating
Controlled shot peening
Laser peeningPipes and Tubes
Internal bores and surfaces
Oil well drill pipes
Cooling tubes – water walls and heat exchangers
Transmission shaft oil holes
Steam generator roll transition zone
Plastic pallet transportationFailure modes
Corrosion
Stress corrosion cracking
High temperature corrosion
Fatigue
Fretting
Galling
Angel hair effectSolutions
Controlled shot peening
Liquid coatings
Thermal spray coatings
Thermal barrier coatingsSprings
Compression/tension coil springs
Valve springs
Torsion springs
Disc springs
Leaf springsFailure modes
Fatigue
Fretting
CorrosionSolutions
Controlled shot peening
Liquid coatingsSteam and Gas Turbines
Blade roots
Air foils
Diaphragm couplings
Rotors
Fir tree grooves
Locking nutsFailure modes
Fretting
Cavitation erosion
Water droplet erosion
Fatigue
Stress corrosion crackingSolutions
Controlled shot peening
Laser shock peening
Thermal spray – HVOF, Plasma and flame sprayValves for Compressors and Pumps
Flapper valves
SealsFailure modes
Ìý
FatigueSolutions
Ìý
Controlled shot peening
C.A.S.E. isotropic superfinishingWelded Components and Fabrications
Fillet weld toe profile
HAZ (Heat affected zone)Failure modes
Ìý
Fatigue
Stress corrosion crackingSolutions
Ìý
Controlled shot peening
Laser peeningSubsea Components and Structures
Christmas tree structures
Welds – heat affected zones
Seals
Connectors
Valves
Fasteners, threads and shaftsFailure modes
Ìý
Environmental corrosion
Stress corrosion cracking
Pressure and hydrogen cracking
Galling
FrettingSolutions
Ìý
Controlled shot peening
Liquid coatings
Thermal Spray coatings
Cathodic protection
Zinc phosphate coatings