FLTM-BI_157-06-1

FORDLABORATORYTESTMETHODBI157-06DateActionRevisions20010320RevisedEditorial–notechnicalchangeA.Cockman19961002PrintedcopiesareuncontrolledPage1of7Copyright©2001,FordGlobalTechnologies,Inc.HIGHPERFORMANCESTONECHIPRESISTANCETESTNEWRATINGSCALEApplicationThistestmethodisusedtodeterminetheresistanceofpaint,onexteriorbodysurface,tostonechipping.ApparatusRequiredStoneChipResistanceTesterVDAModel508Source:ErichsenGmbHandCo.KGorPearsonPankeLtd.D-5870Hemer-Sundwig1-3HalegroveGardensGermanyLondonNW73LREnglandorequivalentEvaluationStandards8blackandwhitephotographsSource:CentralLaboratoryFord-WerkeAGD-5000KolnWestGermanyTestPanelsPlanesurface,preparedandpaintedinaccordancewiththeapplicableEngineeringMaterialSpecification,minimumdimension200x100mm.ThecoatingthicknessistobedeterminedaccordingtoFLTMBI117-01orasotherwisespecified.MaterialsRequiredChilledIronGritDiamantAngular,4-5mminsize,rustfreeSource:EisenwerkeWurthGmbHD-7101BadFredrichshall/JagstfeldGermanyFORDLABORATORYTESTMETHODBI157-06Page2of7Copyright©2001,FordGlobalTechnologies,Inc.ConditioningandTestConditionsAlltestvaluesindicatedhereinarebasedonmaterialconditionedinacontrolledatmosphereof23+/-2°Cand50+/-5%relativehumidityfornotlessthan24hpriortotestingandtestedunderthesameconditionsunlessotherwisespecified.Procedure1.AgetestpanelsaccordingtoapplicableEngineeringMaterialSpecification.2.Gritblastthetestpanelsforaperiodof30to35secondswith2000gofthegritusinganairpressuresettingof2barat23+/-2°C.3.PerformwaterimmersiontestaccordingtoBI104-01for72hours.4.Repeatthegritblastingasspecifiedunderprocedure2withinonehourofremovingthepanelfromwaterimmersion.5.EvaluatebycomparisonwithEvaluationStandardsPhotographs.6.Allchippingshallbereported.Wherepossibleidentifyandrecordtheplaneinthepaintlayerswherechippingoccurs.GeneralInformation1.Forspecialtests(e.g.)initialsample,performthetestintriplicateandreporttheaverageresult.2.Thestonechipresistanceequipmentshallbestandardizedperiodicallyforeffectiveness.Ifnecessary,theairpressureshallbeadjustedtocorrelatewiththestandardsonfileattheMaterialsLaboratoryofProductEngineering.3.Toavoidaerodynamicresistanceensurethattheendoftheflexibleoutlethasagroundclearanceofatleast50mm.4.Ensurethatthegritwillproduceconsistentresults.Checkgritweightbeforestartingtestandsubsequently,every25cycles,removeusedgrittogiveaweightof1950gandmakeupweightto2000gwithnewgrit.Wherelossinusereducestheweighttolessthan1950gdonotremoveanyusedshotbutmakeupto2000g.Chemicals,materials,parts,andequipmentreferencedinthisdocumentmustbeusedandhandledproperly.Eachpartyisresponsiblefordeterminingproperuseandhandlinginitsfacilities.FORDLABORATORYTESTMETHODBI157-06Page3of7Copyright©2001,FordGlobalTechnologies,Inc.HIGHPERFORMANCESTONECHIPRESISTANCETESTFORDLABORATORYTESTMETHODBI157-06Page4of7Copyright©2001,FordGlobalTechnologies,Inc.HIGHPERFORMANCESTONECHIPRESISTANCETESTFORDLABORATORYTESTMETHODBI157-06Page5of7Copyright©2001,FordGlobalTechnologies,Inc.HIGHPERFORMANCESTONECHIPRESISTANCETESTFORDLABORATORYTESTMETHODBI157-06Page6of7Copyright©2001,FordGlobalTechnologies,Inc.HIGHPERFORMANCESTONECHIPRESISTANCETESTFORDLABORATORYTESTMETHODBI157-06Page7of7Copyright©2001,FordGlobalTechnologies,Inc.HIGHPERFORMANCESTONECHIPRESISTANCETEST