1、ASD STANDARD NORME ASD ASD NORM prEN 4025 Edition P 2 December 2009 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P 1 of April 1994
2、 and will supersede EN 4025:2001Descriptors: ENGLISH VERSION Aerospace series Pipe coupling 830 in titanium alloy Elbows 45, bulkhead Srie arospatiale Systme de raccordement 830 en alliage de titane Raccords couds 45 pour traverse de cloison Luft- und Raumfahrt Rohrverschraubung 830 aus Titanlegieru
3、ng Winkel-Schottverschraubungen 45 This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically appr
4、oved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examinat
5、ion and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national lev
6、el by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 15 December 2009 Comments should be sent within six months after the date of publication to ASD-STAN Mechanical Domain Copyright 2009 by ASD-STAN
7、prEN 4025:2009 (E) 2 Contents Foreword2 1 Scope 3 2 Normative references 3 3 Required characteristics.3 4 Designation 5 5 Marking .5 6 Technical specification .6 7 Installation details6 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inqu
8、iries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4025:2009 (E) 3 1 Scope This standard specifies the characteristics of elbows 45, bulkhead, for pipe couplings 830, in titanium
9、alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa. Temperature range: 55 C to 135 C. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the
10、text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to ap
11、plies (including amendments). EN 2424, Aerospace series Marking of aerospace products EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods EN 3267, Aerospace series Washers, bulkhead, in titanium alloy EN 3274, Aerospace series Pipe coupling 830 Thread end Geometric configu
12、ration EN 3275, Aerospace series Pipe coupling 830 up to 28 000 kPa Dynamic beam seal Metric series Technical specification EN 3311, Aerospace series Titanium alloy TI-P64001 Annealed Bar for machining D 150 mm 1)EN 3312, Aerospace series Titanium alloy TI-P64001 Grade 2 Annealed Forgings De 150 mm
13、1)EN 3314, Aerospace series Titanium alloy TI-P64001 Solution treated and aged Bar for machining D 75 mm 1)EN 3315, Aerospace series Titanium alloy TI-P64001 Solution treated and aged Forgings De 75 mm 1)ISO 5855-3, Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systems. 3 Requ
14、ired characteristics 3.1 Configuration Dimensions Mass According to Figure 1 and Table 1. The values apply before lubricating. Dimensions not specified are at the manufacturers option provided that the qualification and acceptance requirements of EN 3275, type II are met. 1) Published as ASD-STAN Pr
15、estandard at the date of publication of this standard. prEN 4025:2009 (E) 4 3.2 Surface roughness According to Figure 1, unless otherwise specified in the design documentation. 3.3 Materials According to EN 3311 or EN 3314, EN 3312 or EN 3315. 3.4 Surface treatment Lubrication: according to EN 2491,
16、 on threads and sealing faces. Prior to application of the lubricant, the surface shall be abrasive blasted using non-metallic grit. Film thickness 0,005 mm to 0,013 mm. 3.5 Internal surface finishing Finishing shall give a radius R of 0,3 mm to 1,0 mm and a surface roughness of 0,8 m. Hand deburrin
17、g is not permitted. Dimensions in millimetres Key aArea for marking bAccording to EN 3274, form C cAccording to EN 3274, form D dThread eAcross flats s f Radius of the complete internal junction shall be between R 0,3 to 1,0 Figure 1 prEN 4025:2009 (E) 5 Table 1 Dimensions in millimetres Codea Threa
18、db e c l1c L2 c L3s d Mass g/piece 4g6g 0,2 0,2 0,2 h13 max. 05 MJ10 1 0,9 16,3 32,3 16,8 8 10,1 06 MJ12 1,25 1,0 17,8 37,0 19,0 9 16,1 08 MJ14 1,5 1,4 20,8 40,8 19,8 11 22,9 10 MJ16 1,5 1,8 21,8 40,8 19,8 13 29,6 12 MJ18 1,5 2,2 23,8 42,8 19,8 15 37,0 14 MJ20 1,5 2,4 23,8 42,8 19,8 16 58,7 16 MJ22
19、1,5 2,8 25,8 43,8 20,8 18 64,6 18 MJ24 1,5 3,2 27,8 44,8 21,8 21 71,7 20 MJ27 1,5 4,7 27,8 45,8 22,8 24 89,2 22 MJ30 1,5 4,3 30,8 46,8 23,8 27 104,3 25 MJ33 1,5 4,6 32,8 48,8 25,8 30 139,1 28 MJ36 1,5 5,3 34,8 50,8 26,3 34 176,7 32 MJ39 1,5 5,0 36,4 53,8 29,5 36 212,6 aCorresponds to the pipe nomina
20、l outside diameter. bAccording to ISO 5855-3. cDrill depth dimension = l1 e or l2 e. dAcross flats. 4 Designation EXAMPLE Description block ELBOW 45, BULKHEAD Identity block EN4025-05 Number of this standard Code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description
21、 block and the identity block. 5 Marking According to EN 2424, style A and Figure 1. prEN 4025:2009 (E) 6 6 Technical specification According to EN 3275, type II. 7 Installation details See Figure 2. Dimensions in millimetres Key 1 Bulkhead 2 Washer according to EN 3267 aGrip length bThread cThread + 0,5 Figure 2
