case study cold spray landing gear-rev.9.3 - coc · pdf file | info@coc- platform: northrop...

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PLATFORM: Northrop F-5 E / F

PROGRAM: LandingGearReconstruction

PRODUCT: NoseandMainLandingGear

CASE STUDY

PARTNUMBERS:14-40600MainGear&14-41600(7829186to7829194)NoseGearTECHPUBLICATIONS:T.O.1F5E-2-7SeriesTECHNOLOGIES:COLDSPRAYtoMIL-STD-3021

PROBLEM:Replacementcostsandmanufacturingtimefornewproductionlandinggearcomponents. SOLUTION:ColdSpray is theapplicationof supersonicparticledeposition (SPD) for repairingandenhancing theairworthiness and integrity of aging aircraft structures.With Cold Spray, there is no degradation ofmaterialheattreattemperbecauseitutilizeskineticratherthanthermalenergy.Thisadditiveprocess,inwhichmetalparticlesentrainedinasupersonicjetofanexpandedgas,impactasolidsurfacewithsufficient energy to cause plastic deformation and bonding with the surface so that the powder isreconstituted intoametalwithout the creationof aheataffected zone. Moreover, thedeleteriouseffectsofdepositoxidation,evaporation,andresidualstressesareavoided.UsingColdSpray,COCAerospacere-appliesmaterialback intothedamagedlandinggearparts. Theparts are re-machined to original dimensions, then final processing is performed including chrome,grind,anodize,etc.AllColdSprayisperformedthroughCOC’sPartnerMOOGattheirColdSprayCenterofExcellence.COCAerospacelandinggearreconstructioniscertifiedtoMIL-STD-3012andAS9100Rev’C’.Landing gear components that are the best candidates for Cold Spray repair and reconstructioninclude:

• MAINLANDINGGEARPISTONS&CYLINDERS• NOSELANDINGGEARMAINHOUSINGS&CYLINDERS

Costsavingisnormallyover60%ofnewparts.Cycletimetoreturnpartstoserviceis5timesfaster.

www.coc-aerospace.com|info@coc-aerospace.com

PLATFORM: Northrop F-5 E / F

PROGRAM: LandingGearReconstruction

PRODUCT: NoseandMainLandingGear

CASE STUDY

AfterColdSpray,partscanbereturnedtotheiroriginalstate

Damagedpartis‘cleanedup’,thenColdSprayedandremachined

Significantamountsofmaterialscanbereappliedtoheavly

damagedparts

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