SIST EN 4560:2004
(Main)Aerospace series - Pipe coupling 37°, spherical, up to 21000 kPa - Inch series - Technical specification
Aerospace series - Pipe coupling 37°, spherical, up to 21000 kPa - Inch series - Technical specification
This standard specifies the required characteristics, inspection and test methods, quality assurance and procurement requirements for inch series, pipe couplings, 37°, spherical, for temperature ranges from type II to type V according to ISO 6771 and nominal pressure up to 21 000 kPa.
In addition to the requirements of this technical specification, the coupling assemblies shall be qualified in accordance with equipment or component specification requirements.
Luft- und Raumfahrt - Rohrverschraubung 37° mit Kugelbuchse, bis 21 000 kPa - Inch-Reihe - Technische Lieferbedingungen
Diese Norm legt die Anforderungen, Prüfverfahren, Qualitätssicherung und Lieferbedingungen für Rohrverschraubungen 37° mit Kugelbuchse der Inch-Reihe für die Temperaturbereiche Typ II bis Typ V nach ISO 6771 und Nenndrücke bis 21 000 kPa fest.
Zusätzlich zu den Anforderungen dieser Technischen Lieferbedingungen müssen die Rohrverschraubungen nach den Anforderungen der Geräte- oder Komponentenspezifikationen qualifiziert werden.
Série aérospatiale - Systeme de raccordement sphérique 37°, jusqu'a 21000 kPa - Série inch - Spécification technique
Aerospace series - Pipe coupling 37°, spherical, up to 21000 kPa - Inch series - Technical specification
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aerospace series - Pipe coupling 37°, spherical, up to 21000 kPa - Inch series - Technical specificationLuft- und Raumfahrt - Rohrverschraubung 37° mit Kugelbuchse, bis 21 000 kPa - Inch-Reihe - Technische LieferbedingungenSérie aérospatiale - Systeme de raccordement sphérique 37°, jusqu'a 21000 kPa - Série inch - Spécification techniqueAerospace series - Pipe coupling 37°, spherical, up to 21000 kPa - Inch series - Technical specification49.080Aerospace fluid systems and componentsICS:Ta slovenski standard je istoveten z:EN 4560:2003SIST EN 4560:2004en01-maj-2004SIST EN 4560:2004SLOVENSKI
STANDARD
SIST EN 4560:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 4560February 2003ICS 49.080English versionAerospace series - Pipe coupling 37°, spherical, up to 21000kPa - Inch series - Technical specificationSérie aérospatiale - Système de raccordement sphérique37°, jusqu'à 21000 kPa - Série inch - SpécificationtechniqueThis European Standard was approved by CEN on 14 September 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovak Republic, Spain, Sweden, Switzerland andUnited Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4560:2003 ESIST EN 4560:2004
EN 4560:2003 (E)2ContentsForeword.31Scope.32Normative references.33Terms and definitions.44Requirements, inspection and test methods.74.1Test conditions and preparation of specimens for qualification.75Quality assurance.145.1Product qualification.145.2Quality control records.145.3Acceptance conditions.145.4Rejection.145.5Purchaser's (user's) quality control.146Preparation for delivery.156.1Cleaning.156.2Preservation and packaging.15SIST EN 4560:2004
EN 4560:2003 (E)3ForewordThis document EN 4560:2003 has been prepared by the European Association of Aerospace Manufacturers(AECMA).After enquiries and votes carried out in accordance with the rules of this Association, this Standard has receivedthe approval of the National Associations and the Official Services of the member countries of AECMA, prior to itspresentation to CEN.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by August 2003, and conflicting national standards shall be withdrawn at the latest byAugust 2003.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard : Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovak Republic, Spain, Sweden, Switzerland and United Kingdom.1 ScopeThis standard specifies the required characteristics, inspection and test methods, quality assurance andprocurement requirements for inch series, pipe couplings, 37°, spherical, for temperature ranges from type II totype V according to ISO 6771 and nominal pressure up to 21 000 kPa.In addition to the requirements of this technical specification, the coupling assemblies shall be qualified inaccordance with equipment or component specification requirements.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).ISO 1302Geometrical Product Specifications (GPS) - Indication of surface texture in technical productdocumentation.ISO 2685Aircraft - Environmental test procedure for airborne equipment - Resistance to fire in designated firezones.ISO 2859-1Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptancequality limit (AQL) for lot-by-Iot-inspection.ISO 6771Aerospace - Fluid systems and components - Pressure and temperature classifications.ISO 6772Aerospace - Fluid systems - Impulse testing of hydraulic hose, tubing and fitting assemblies.ISO 7137Aircraft - Environmental conditions and test procedures for airborne equipment.SIST EN 4560:2004
EN 4560:2003 (E)4ISO 8625-1Aerospace - Fluid systems - Vocabulary - Part 1 : General terms and definitions related to pressure.EN 2951Aerospace series - Metallic materials - Test method - Micrographic determination of content of non-metallic inclusions 1).EN 9133Aerospace series – Quality management systems – Qualification procedure for aerospace standardparts.EN 10204Metallic products - Types of inspection documents.TR 2674Aerospace series - Design and construction of pipelines for fluids in liquid or gaseous condition -Rigid lines, installation 2).MIL-L-23699Lubricating Oil, Aircraft Turbine Engine, Synthetic Base, NATO Code Number 0-156 3).3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1 pressurenominal pressure, proof pressure, impulse pressure, burst pressure according to ISO 8625-13.2 Coupling and assembling3.2.1 coupling assemblyassembled nut, ferrule and pipe mating with e.g. nipple, union, elbow, see Figure 1
1)Published as AECMA Prestandard at the date of publication of this standard2)Published as AECMA Technical Report at the date of publication of this standard3)Published by : Department of Defense (DoD), the Pentagon, Washington, D.C. 20301, USASIST EN 4560:2004
EN 4560:2003 (E)5Key1Straight union2Nut3FerruleFigure 1 – Example of coupling assembly3.2.2 dimensional codecorresponds to the nominal diameter given in 16th of inches within two digits.3.2.3 snugmoment when positive resistance to rotation is observed during assembling3.3 Surface defects3.3.1 surface irregularitynonconformity with general surface appearance, possible defect3.3.2 crackclean (crystalline) fracture passing through or across the grain boundaries that possibly follows inclusions of foreignelements. Cracks are normally caused by overstressing the metal during forging or other forming operations, orduring heat treatment. Where parts are subject to significant reheating, cracks are usually discoloured by scale.SIST EN 4560:2004
EN 4560:2003 (E)63.3.3 folddoubling over of metal, which can occur during the forging operation. Folds can occur at or near the intersection ofdiameter changes and are especially prevalent with non-circular necks, shoulders and heads.3.3.4 lapfold-like machining defect3.3.5 seam(1) usually a surface opening or crack resulting from a defect obtained during casting or forging(2) extraneous material, stringer in the material, which is not homogeneous with base metal3.3.6 pitvoid or hole in the surface as caused, for example, by corrosion.3.4 Quality assurance3.4.1 production batchdefinite quantity of some commodity or service produced at one time under conditions that are presumed uniform3.4.2 delivery batchbatch consisting of couplings with the same identity block which may come from different production batches3.4.3 acceptance quality limitAQLwhen a continuing series of lots is considered, a quality level which for the purposes of sampling inspection is thelimit of a satisfactory process average3.4.4 qualificationtesting required to demonstrate successful performance of the coupling assembly in simulated service (overload,destructive and fatigue tests)3.4.5 major defectdefect other than critical, that is likely to result in a failure or to reduce materially the usability of the consideredproduct for its intended purposeSIST EN 4560:2004
EN 4560:2003 (E)73.4.6 minor defectdefect that is not likely to reduce materially the usability of the considered product for its intended purpose, or thatis a departure from established specification having little bearing on the effective use or operation of this product4 Requirements, inspection and test methodsSee Table 1 and Table 2.Qualification tests given from 4.12 to 4.15 shall only be made when required. Complementary qualification testsmay be determined in direct relation with the application (e.g. vibration test, thermal shock test).The coupling shown on the figures of this standard are for information only. The test specimens shall be assembledwith the part to test (e.g. elbow fitting instead of straight fitting).Non removable coupling (e.g. welded elbow, welded reducer) shall be tested on sample pipes in combination withremovable (threaded) couplings.4.1 Test conditions and preparation of specimens for qualification4.1.1 Test fluidsUnless otherwise specified, tests shall be carried out using e.g. oil compatible with the test temperature range.Water may be used, whenever practical, for proof, burst, stress corrosion and re-use capability testing.4.1.2 Specimen preparationShaped parts shall be machined with the grain flow of the bar or plate in the direction of the fluid. Installations onthe coupling shall be in accordance with TR 2674. The coupling shall not be lubricated prior the first assembling.For the next assembling they shall be lubricated with engine oil (e.g. according to MIL-L-23699) at the interfacebetween the nut and the ferrule.Prior to testing, and unless otherwise specified, all couplings with dimensional code up to 12 shall be assembledusing either of the following methods. For couplings with dimensional code greater than 12 the assembling shall bemade by using the torque tightening method:· torque tightening method:A torque value comprised between the minimum and the maximum given in Table 3 shall be applied to the nut perTR 2674.· angle tightening method:The following sequence shall be applied :1 tighten the nut with a wrench to snug;2 turn the nut an additional 60° (see Figure 2a);3 loosen the nut; (for new parts assembling only);4 retighten the nut with a wrench to snug;5 turn the nut an additional 30° (see Figure 2b). Figure 2c gives also a checking method by using and returningan open end wrench with a 15° offset.SIST EN 4560:2004
EN 4560:2003 (E)8The torque tightening method used for the test and value applied shall be recorded.4.1.3 Pipe assemblyThe method of joining the pipe to the coupling (brazing, welding, mechanical attachment, etc.) shall not bedetrimental to the properties, strength or geometry of the pipe assembly. The joint shall be in accordance with thedesign instructions and shall be inspected by direct measurement, X-ray or other non-destructive methods.SIST EN 4560:2004
EN 4560:2003 (E)9Table 1 – Requirements, inspection and test methodsClauseCharacteristicRequirementInspection and test methodQ aA a4.2 bMaterialsMetallic
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.