1、 - CEN PREN*4LBb 94 W 3404589 0075573 897 W A.E.C.M.A. STANDARD NORME A.E.C.M.A. A.E.C.M.A. NORM prEN 4186 Edition P 1 September 1994 EDITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 4
2、7.36.98.76 UDC : Descriptors : Srie arospatiale Raccordement 8O 30 en alliage de titane Raccords en croix ENGLISH VERSION Aerospace series Pipe coupling 8O 30 in titanium alloy Cross unions Luft- und Raumfahrt Rohrverschraubung 8O 30 aus Titanlegierung Kreuzverschrau bung en This “Aerospace Series“
3、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 has been technically approved by the experts of the concerned Commission folio wing comment by the Membe
4、r countries. Subsequent to the publication of this pre-standard, the technical content shall not be changed to an extent that interchangeability is affected, ph ysically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre
5、NPSI 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. Nota - Exira copies can be supplied by B N.A.E. - Tedinopolis 54 - 199, nie Jean-Jacques Rousseau - 92138 ISSY
6、LESMOULINEAUX CEDEX I Comments should be sent within six months after the date of DUbliCatiOn decision I Edition approved for publication 1994-09-30 A. E. C .M .A. Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE C4 Chairman M. Staib aecrna 1994 CEN PRENx4LBb 9
7、4 m 3404589 0075572 723 m prEN 4186 Page 2 Contents list 1 Scope 2 Normative references 3 Required characteristics 4 Designation 5 Marking 6 Technical specification H2LL (X/4.FX/X/X) 15.08.94 CEN PREN*4186 94 E 3404589 0075573 bbT prEN 4186 Page 3 - 1 Scope This standard specifies the characteristic
8、s of a cross union in titanium alloy intended for use in aircraft fluid system pipelines. Nominal pressure: Temperature range: - up to 28 O00 kPa - 55 C to 135 “C 2 Normative references IS0 5855-3 EN 2424 EN 2491 EN 3274 EN 3275 EN 3314 EN 3315 MIL-L-4601 OB Aerospace - MJ threads - Part 3: Limit di
9、mensions for fittings for fluid systems Aerospace series - Marking of aerospace products) Aerospace series - Molybdenum disulphide dry film lubricants - Coating methods) Aerospace series - Pipe coupling 830 - Thread end - Geometric configuration3) Aerospace series - Pipe coupling 8“30 - Dynamic beam
10、 seal up to 28 O00 kPa - Metric series - Technical specification3) Aerospace series - Titanium alloy TLP64001 - Solution treated and aged - Bar for machining - D 75 mm3) Aerospace series - Titanium alloy TI-P63 - Solution treated and aged - R, 1 1070 MPa- Forgings - De 5 50 mm3) Lubricant, solid fil
11、m, heat cured, corrosion inhibiting4) 1 Published as AECMA Standard at the date of publication of this standard ) In preparation at the date of publication of this standard 3, Published as AECMA Prestandard at the date of publication of this standard 4, Published by: Department of Defense (DOD), the
12、 Pentagon, Washington, D.C. 20301 H2LL (X/4.FX/X/X) 15.08.94 CEN PREN*4LBb 34 H 3404589 0075574 5Tb prEN 4186 Page 4 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances The configuration shall be in accordance with figure 1 ; the dimensions and tolerances shall conform with the va
13、lues shown in figure 1 and table 1 prior to application of dry film lubricant. The dimensions quoted are those required by design to meet installation and systems requirements. Dimensions and tolerances not quoted are at manufacturers option subject to meeting the qualification and acceptance requir
14、ements of EN 3275. 3.2 Surface roughness Use values quoted on figure 1 except for those values quoted in the referenced standards; these values will take precedence. 3.3 Material See EN 3314 or EN 3315. 3.4 Surface treatment Lubrication: see EN 2491, on threads and sealing faces. NOTE: Until EN 2491
15、 is published, the lubricant may be applied using MIL-1-4601OB. Abrasive blasting shall be carried out using aluminium oxide within the grade 90-220 mesh at a pressure of 480 kPa max. for a time to give a clean even surface and then rinsed in clean cold water. Lubrication shall be applied within 3 h
16、 Break ali sharp edges O. I mm to 0.U rnm Mark i ng YI/ I &/ Dry I ubr i cat i on+) n If=n v EN 3276 form C+) *) A i I four connect i ng faces Figure 1 : Configuration W Detai I x J-L / I I /I Corner to be removed by a process giving a radius of 0.3 rnm tc 1.0 mm and a surface finish of 0.8 vm. (Ha
17、nd deburring is not permitted) H2LL (XI4.FXIXIX) 15.08.94 CEN PREN*4LBb 74 3404589 0075575 432 16,3 17,8 20,8 21,8 23,8 23,8 25,8 27,8 prEN 4186 Page 5 8 11,04 9 16,44 11 25,94 13 34,22 15 44,26 16 53,24 18 70,OO 21 91,12 Table 1 : Dimensions, tolerances and mass 27,8 30,8 32,8 34,8 36,4 Thread ) DN
18、 1 49 6g 24 1 15,22 27 148,82 30 206,90 34 251 ,O8 36 265,28 - 05 06 08 22 25 28 32 10 12 14 16 18 MJ 30 x 1,5 MJ 33 x 1,5 MJ 36 x 1,5 MJ 39 x 1,5 MJ10x1 MJ 12 x 1,25 MJ 14 x 1,5 MJ 16 x 1,5 MJ 18 x 1,5 MJ 20 x 1,5 MJ 22 x 1,5 MJ 24 x 1,5 20 I MJ27x 1,5 Dimensions in millimetres I +: 0,2 1 h13 I max
19、 glpiece 4 Designation EXAMPLE: Description block Identity block CROSS, UNION Number of this standard DN (see table 1) NOTE: If necessary, the code i9005 shall be placed between the description block and the identity block. 5 Marking Each part shall be marked in the position shown in figure 1 in accordance with EN 2424, style A. 6 Technical specification Parts supplied to this standard shall conform with the requirements of EN 3275 type II. H2LL (XI4.FXIXIX) 15.08.94
