1、ASD STANDARD NORME ASD ASD NORM prEN 4020 Edition P 2 October 2007 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. + 32 2 775 8126 - Fax. + 32 2 763 3565 - www.asd-stan.orgICS: Supersedes edition P 1 of April 1
2、994 and will supersede EN 4020:2001 Descriptors: ENGLISH VERSION Aerospace series Pipe coupling 830 in titanium alloy Elbows 90, welded end with thrust wire nut Srie arospatiale Systme de raccordement 830 en alliage de titane Raccords couds 90 souder, avec crou jonc Luft- und Raumfahrt Rohrverschrau
3、bung 830 aus Titanlegierung Winkelverschraubungen 90 mit Anschweiende, mit Mutter mit Schubdraht 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
4、 the European Aerospace Industry. It has been technically approved 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 functiona
5、lly, without re-identification of the standard. After examination 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
6、national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 31 October 2007 Comments should be sent within six months after the date of publicat
7、ion to ASD-STAN Mechanical Domain Copyright 2007 by ASD-STAN prEN 4020:20072 Contents Page Foreword2 1 Scope 3 2 Normative references 3 3 Required characteristics.4 3.1 Configuration Dimensions Mass.4 3.2 Surface roughness 4 3.3 Materials .4 3.4 Surface treatment 4 3.5 Internal surface finishing 4 4
8、 Designation 7 5 Marking .7 6 Technical specification .7 7 Quality assurance7 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Ma
9、nual, this standard has received approval for Publication. prEN 4020:20073 1 Scope This standard specifies the characteristics of elbows 90, welded end, with thrust wire nut, for pipe couplings 830, in titanium alloy, for aerospace applications. Nominal pressure: up to 28 000 kPa Temperature range:
10、55 C to 135 C 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 5855-3,
11、Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systems. EN 2424, Aerospace series Marking of aerospace products. EN 2491, Aerospace series Molybdenum disulphide dry lubricants Coating methods. EN 2656, Aerospace series Pipe coupling Coupling ends, welded Geometric configuration
12、. EN 3264, Aerospace series Pipe coupling 830 in titanium alloy Thrust wire nuts. EN 3273, Aerospace series Pipe coupling 830 Dynamic beam seal end for elbows, tees and crosses Geometric configuration. EN 3275, Aerospace series Pipe coupling 830 up to 28 000 kPa Dynamic beam seal Metric series Techn
13、ical 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.1)EN 3314, Aerospace series Titanium alloy TI-P64001 Solution treated and aged Bar for machining D 75 m
14、m. 1)EN 3315, Aerospace series Titanium alloy TI-P64001 Solution treated and aged Forgings De 75 mm. 1) EN 4032, Aerospace series Pipe coupling 830 in titanium alloy Thrust wire. EN 9133, Aerospace series Quality management systems Qualification procedure for aerospace standard parts. 1) Published a
15、s ASD Prestandard at the date of publication of this standard. prEN 4020:20074 3 Required 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
16、 and acceptance requirements of EN 3275, type II are met. 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 Welded end without surface treatment min. 10 mm (out
17、side and bore diameters). Lubrication: according to EN 2491, on contact area between thrust wire and coupling. 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 giv
18、e a radius R of 0,3 mm to 1,0 mm and a surface roughness of 0,8 m. Hand deburring is not permitted. prEN 4020:20075 Dimensions in millimetres Key 1 Nut according to EN 3264 2 Thrust wire according to EN 4032 aArea for marking bAccording to EN 3273 cAcross flats s2dAccording to EN 2656 eAcross flats
19、s1f Fully inserted gR 0,3 to 1,0 Figure 1 prEN 4020:20076 Table 1 Dimensions in millimetres Code a,bThread cl1 dl2l3 dl4l5 er s1s2Mass g/piece 4H5H 0,2 0,2 0,3 020,010,h13 h13 max. 0504 0505 MJ10 1 19 24,8 19 14 6,6 1,0 14 8 10,01 10,10 0605 MJ12 1,25 21 27,7 21 15 7,5 1,0 16 9 13,82 0805 0806 MJ14
20、1,5 24 32,6 24 16 9,4 1,0 18 11 16,66 16,82 1005 1008 MJ16 1,5 25 33,5 25 16 9,3 1,2 21 13 21,10 21,71 1205 1206 1209 MJ18 1,5 27 36,2 27 17 10,5 1,2 22 15 28,70 28,96 29,72 1405 1408 1410 MJ20 1,5 28 37,1 28 19 10,4 1,2 24 16 33,77 34,81 35,44 1605 1606 1610 1612 MJ22 1,5 30 38,9 30 19 10,2 1,2 27
21、18 46,22 46,62 48,16 48,89 1805 1807 1810 1813 MJ24 1,5 32 41,1 32 19 10,9 1,2 30 21 61,18 62,09 63,38 64,62 2006 2007 2012 2015 MJ27 1,5 35 44,1 35 20 10,9 1,5 32 24 72,27 72,81 75,30 76,74 2208 2212 2216 MJ30 1,5 37 46,1 37 21 10,8 1,5 36 27 92,36 94,68 96,91 2508 2509 2514 2518 MJ33 1,5 40 49,1 4
22、0 23 10,8 1,5 41 30 123,95 124,69 128,28 131,06 2808 2810 2816 2820 MJ36 1,5 43 52,1 43 24 10,8 1,5 46 34 148,91 150,61 155,68 158,92 3210 3212 MJ39 1,5 45 53,9 45 25 10,6 1,5 50 36 177,97 180,05 aCorresponds to the pipe nominal outside diameter and wall thickness. bRelationship between code and pre
23、ssure classification according to EN 2656. cAccording to ISO 5855-3.dDrill depth dimension. eOnly applicable when diameter d2to EN 3273 is smaller than the actual forging diameter. Differences between these diameters are acceptable. prEN 4020:20077 4 Designation EXAMPLE Description block ELBOW 90, W
24、ELDED END Identity block EN4020-0806 Number of this standard Code (see Table 1) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 5 Marking According to EN 2424, style A and Figure 1. 6 Technical specification According to EN 3275, type II. 7 Quality assurance See EN 9133.
