1、iAECMA PREN32b7 90 a 3032333 0005335 i.I W . . Edition approved for publication 5th January 1990 A. E. C. M .A. STAN DARD NORME A.E.C.M.A. A.E.C.M.A. NORM Comments should be sent within six months C4 Chairman after the date of publication decision A.E.C.M.A. 88, Bd. Malesherbes Mr. Staib 75008 PARIS
2、 FRANCE prEN 3267 Issue P 1 January 1990 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boufevard Malesherbes, 75008 PARIS - TL. 45-63-82-85 UDC : Key words ENGLISH VERSION Aerospace series Washer, bulkhead in titanium alloy Srie arospa$iale Rondelle pour traverse de cloi
3、son en alliage de titane Luft- und Raumfahrt Scheibe fr Schottanschlup aus Titan This Aerospace Series pre-standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It h
4、as been technically approved by the experts of the concerned Commission following comment by the Member countries. Subsequent to the publication of ihis pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-i
5、dentification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. prEN 3267
6、 Page 2 Contents 1 Scope and field of a,pplication References Required characteristics Designation Marking Technical specification SAE Interest: Fuure revision of this stsndarshail be coordinated with SA? G-3/G-3B IAECMA PREN32b7 90 m LO12311 0005137 B m prEN 3267 Page 3 1 Scope and field of applica
7、tion This standard specifies the characteristics of washer,bulkhead in titanium alloy intended for use in aircraft fluid system pipe lines. 2 References EN 2424 Aerospace series - Identification marking of standard fasteners 2) EN 2808 Aerospace series - Anodizing of titanium and titanium alloys 1)
8、EN 3314 Aerospace series - Titanium alloy TI-P63 - Solution treated and aged - Rrn / 1070 MPa - Bar for machining - De 50 mm 2) EN 3456 Aerospace series - Titanium alloy TI-P63 - Annealed - 920 Rm 2 1180 MPa - Sheet and strip a 6 mm 2) 1) In preparation 2) Published as AECMA pre-standard AECMA PREN3
9、2b7 90 30323LL 0005338 T I- _ prEN 3267 Page 4 3 Required characteristics 3.1 Configuration-Dimensions-Tolerances The configuration shall be in accordance with the figure; the dimensions and tolerances shall conform with the values shown in the figure and table after anodizing. 3.2 Surf ace roughnes
10、s See figure. Unless other values of referenced design standards are specified. Values apply before anodizing. 3.3 Material Titanium alloy: EN 3314 or EN 3456 3.4 Surface treatment Anodizing EN 2808 3f/6q Break all sharp edges 0.1 mm TO 0,4 mm -II- Figure - Configuration IAECMA I-. PREN3267 90 30323
11、33 0005337 3 a prEN 3267 Page 5 Table Dimensions - tolerances and mass Dimensions in mi 11 imetres 18 24.5 42 1.5 6.22 20 27.5 45 1.5 6.78 22 30.5 50 1.5 8.40 25 133.5 I 55 11.5 I 10.18 28 36.5 58 1.5 10.87 32 39.5 63 1 :5 12.88 I) DN = Dto. Nomtnal (outstde dtameter of the correspondtng ptpe) 2) To
12、lerance ts per semtftntshed pro- ducts for sheet matertals or * 0.1 when manufactured from bar. 4 Designation Each washer shall only be designated as in the following example: Identity block I EN3267-05 Description block WASHER, BULKHEAD Number of EN standard I 05 = DN (see table) Note: between the
13、description block and identity block If necessary the originator code I9005 may be introduced 5 Marking Identification in accordance with EN 2424, style A prEN 3267 Page 6 6 Technical specification Parts supplied to this standard shall be checked for conformity with this standard in respect of: - material and surface treatment - dimensional parameters - marking for the first batch from a manufacturer 100%; for subsequent batches for major nonconformance at 1,5 and for minor nonconformance at 2,5 AQL
