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1、DefinitionsofSurfaceQualityA–SurfaceTexture.Naturalsurfaceofthecastingaftershptblasting(4levels)B–NonMetallicInclusions–Nonmetallicmaterialtrappedonthecastingsurface(4levels)C–GasPorosity–Indicationsofgasatthecastingsurface(4levels)D–SolidificationDiscontinuitiesE–SandexpansionDiscontinuitiesF
2、–MetalInsertsG–MetalRemovalMarks–Surfaceremainingafterusingoxigasoraircarbonorprocessesformetalremoval(4levels)H–MetalRemovalMarks–Surfaceremainingafterusingamechanicalmeansofdressingacastsurfaceorapreviouslythermallydressedsurface(4levels)J–MetalRemovalMarks–Welds.Indicationsofweldsfullyorpar
3、tiallyremovedbythermalormechanicaldressing(4levels)ASTMA802StandardPracticeforSteelCastings,SurfaceAcceptanceStandards,VisualExaminationVisualCriteriaforGEWESandCastingsGEWE.all._spc_castings_supplement.GEEN.00(392A1165)QualityLevelthatallGEWECastingSuppliersmustdeliverytoGEWEfacilitySurfaceTe
4、xtureQualityLevelA1CriticalAreasSurfaceTextureQualityLevelA2CriticalAreas&NonCriticalAreasSurfaceTextureQualityLevelA3NonCriticalAreasGasPorosityQualityLevelC1CriticalAreasGasPorosityQualityLevelC2NonCriticalAreasGasPorosityQualityLevelC3NoacceptableNonMetallicInclusionsQualityLevelB1CriticalA
5、reas&NonCriticalAreasNonMetallicInclusionsQualityLevelB2NonAcceptableNonMetallicInclusionsQualityLevelB4NonAceptableSolidificationDiscontinuityLevelD1NonAceptableSolidificationDiscontinuityLevelD2NonAceptableSandExpansionDiscontinuityQualityLevelE3NonAceptableSandExpansionDiscontinuitiesQualit
6、yLevelE5NonAceptableMetalInsertsQualityLevelF1NonAceptableMetalInsertsQualityLevelF3NonAceptable
