1、STDaAECflA PREN 2bOB-ENGL 1999 101i23LL 0033290 538 Edition approved for publication AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months C4 Chairman after the date of publication to prEN 2608 Edition P I Decem ber I999 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE IN
2、DUSTRIES (AECMA) Guiiedeiie 94 - 8-1200 BRUXELLES - Tel. (+32) 2 i75 8110 - Fax. (+32) 2 775 8111 ICs: Descriptors: ENGLISH VERSION Aerospace series Installation and removal requirements for 8“30 adaptors, threaded with lockrng Srie arospatiale Luft- und Raumfahrt Spcification de montage et de dmont
3、age des raccords implanter 830 bague de scurit Ein- und Ausbaubedingungen fr gerade Einschraubverschraubungen 830 mit Sicherungsring This %Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green pa
4、per for the needs of AECMA- Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeabihty is af
5、fected, physically or functionally, without re-identification of the standard. Aiter examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Oficial Services of the Member countries it will be submitted as a drait European Standard to CEN (European Committee
6、 for Standardization) for formal vote. 1999-12-31 AECMA Guliedelle 94 8-1200 BRUXELLES Mr Staib I l I 0 aecma 1999 STl.AECMA PREN 2b-ENGL 1999 10123LL OOL79L 474 m Page 3 prEN 2608: 1999 I Scope This standard specifies the installation and removal requirements for adaptors, threaded, with lockring f
7、or pipe couplings 830 according to EN 2603. This standard establishes an accurate procedure of adaptor installation, removal and reinstallation to ensure the repeatability of the installation operation and to ensure the effective compliance to sealing and locking requirements. The adaptor shown on a
8、ll figures of this standard is given as an example for the 8 30 interface according to EN 2604. This procedure is used for adaptors 830, for nominal pressure up to 28 O00 kPa. 2 Normative references This European Standard incorporates, by dated or undated reference, provisions from other publication
9、s. These normative references are cited at the appropriate places in the 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
10、 undated references, the latest edition of the publication referred to applies. IS0 5855-1 IS0 5855-3 EN 2435-01 EN 2602 EN 2603 EN 2604 EN 2645 EN 3566 EN 3663 MIL-H-5606 MI L-H-83282 MIL-H-87257 Aerospace - MJ threads - Part 1: General requirements Aerospace - MJ threads - Part 3: Limit dimensions
11、 for fluid systems Aerospace series - Paints and varnishes - Corrosion resistant chromated two component cold curing primer - Part 01: Minimum requirements Aerospace series - Ports for installation of straight metric-size unions with locking ring - Dimensions 1) Aerospace series - Straight metric-si
12、ze unions with locking ring - Port end - Dimensions 1) Aerospace series - Straight metric-size unions with locking ring 830 union interface - Dimensions 1) Aerospace series - Straight metric-size unions with locking ring - Locking ring - Dimensions 1) Aerospace series - Pipe coupling 8“30 in titaniu
13、m alloy -Adapters with locking ring 1) Aerospace series - Pipe coupling - O-rings in acrylonitrile-butadiene elastomer (NBR), 75 IRHD -Temperature range: -55 “C to 135 “C 1) Hydraulic fluid, Petroleum Base; Aircraft, Missile, Ordnance 2) Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, M
14、etric, NATO Code Number Hydraulic Fluid, Fire Resistant, Low Temperature, Synthetic Hydrocarbon Base, Aircraft and Missile 2) H-537 2) 1) Published as AECMA Prestandard at the date of publication of this standard 2) Published by: Department of Defense (DOD), the Pentagon, Washington, D.C. 20301. Pre
15、vious page is blank Page 4 prEN 2608: 1999 STD-AECMA PREN 2608-ENGL 3999 = 1012333 0037292 300 3 Installation instructions 3.1 Engineering information I I 1 Key 1 The adaptor according to EN3566 is used in the 830 coupling system with an interface according to EN 2604. The locknng according to EN 26
16、45 prevents the adaptor from rotating in the port and also avoids port damage at tubing installation due to torquing. Seal is metal to metal, and O-ring according to EN 3663. 2 3 NOTE: This seal is only compatible with hydraulic fluids such as MIL-H-5606, MlL-H-83282 and MIL-H-87257. 4 Tapped hole (
17、boss port side) for the 830 adaptor installation according to EN 2602. 5 Port side interface of the adaptor according to EN 2603. Comparison of numbers for Rosan and AECMA parts see annex A. Figure 1 Table 1: General information Dimensions in millimetres I I I I 32 3566-3332 350 MJ39 x 1,5 MJ33 x 1,
18、5 3663-A-O300 4,lO Corresponds to the pipe nominal outside diameter. According to IS0 5855-3, except MJ6 x 1. MJ6 x I according to IS0 5855-1. a STD-AECMA PREN 2bOB-ENGL 1999 W LO12311 0027293 247 = Paae 5 32 I 350 I 31,576 prEN 2608: 1999 48,25 25,4 29,45 32,45 3.2 Pott preparation The manufacturin
19、g sequence of port preparation is for information only. Qualification of the assembly is required for each manufacturing sequence and type of tool for a given port material installation method and nominal pressure. The hole shall confirm to EN 2602, using the applicable tools for - tap drilling - po
20、rt machining - serration broaching - thread cutting NOTE: The design office can speciy a hole without serration pre-broaching, when low resistance material is used. Figure 2 Page 6 prEN 2608: 1999 a Corresponds to the pipe nominal outside diameter. PT Porting Tool. This tool counterbores, countersin
21、ks, provides a radius and produces a tap drill diameter in one pass. Contours are ground to ensure concentricity. Cutter geometry and material permit the use of this tool with most common materials. b For information only - 3.2.2 Port machining The port machining shall be made in accordance with EN
22、2602. Special porting tools can be used as shown in figure 3 and table 3. Table 3: Porting tools Dimensions in millimetres Dimensions in millimetres a For information only Figure 3 3.2.3 Serration broaching Broaching shall be made according to EN 2602. Special broaching tool can be used as shown in
23、figure 4 and table 4. In this case the following procedure shall apply: 1) Prior to broaching, the cutter teeth will rest on the surface of the boss and the body of the tool will be 2) The tool may be hand-held or used under a press. 3) Locate broaching tool pilot into the port. 4) Slowly apply a fo
24、rce to the mandrel while holding the body to allow the teeth to broach into the parent 5) Broaching is complete when the external shoulder of the mandrel contacts the internal shoulder in the 6) The installation force is then relieved and the tool is ready for removal. 7) To remove the tool from the
25、 boss, tum the nut in clockwise direction against the body and the mandrel free to move up and down. Note that the nut should be backed away from the body of the tool. material counterbore. body. will move up and show the cutting teeth from the counterbore. Table 4: Serration tools Dimensions in mil
26、limetres a Corresponds to the pipe nominal outside diameter. BT: Broaching Tool counterbores, countersinks, provides a radius and produces a tap drill diameter in one pass. Contours are ground to ensure concentricity. For this tool cutter geometry and material permit the use of the most common mater
27、ials with a maximum hardness of 32HRC. Replacement or spare cutters may be purchased individually. For information only Across flats Page 8 prEN 2608: 1999 830 coupling code a STD=AECMA PREN 2bOB-ENGL 3997 LO12311 O037276 T5b - Port Thread 16 dimension code 4h6h Dimensions in millimetres 05 06 08 Ke
28、y 1 Spiral pin 2 Body 3 Mandrel 077 MJ6 x 1 14,50 098 MJ8 x 1 15,60 125 MJ10 x 1 16,90 4 Shoulders in contact 5 Cutter 6 Pilot 10 12 14 16 a Noted runout and the controlled minor diameter of EN 2602 port will result in a permissible maximum runout of 0,23 mm between the serration major diameter and
29、the controlled thread diameter after broaching. Figure 4 136 MJ12 x 1,25 17,60 153 MJ14 x 1,5 18,20 170 MJ16 x 1,5 18,90 1 92 MJ18 x 1,5 19,50 3.2.4 Thread cutting Using the correct tool tap the port to at least the minimum full thread depth Is specified (see table 5 and figure 5). Remove all chips,
30、 burrs, cutting fluids etc., from the threads and the cut area. 18 20 Table 5: Thread preparation 214 MJ20 x 1,5 21,20 23 1 MJ22 x 1,5 21,90 Dimensions in millimetres 22 25 28 32 253 MJ24 x 1,5 22,70 295 MJ27 x 1,5 23,70 320 MJ30 x 1,5 24,70 350 MJ33 x 1,5 25,70 Page 9 8“30 coupling code a 05 06 prE
31、N 2608: 1999 O-ring O-ring Thread d9 di o dl i 17 18 installation Tool Part No. Part No. + 1,25 -A0045 2608-OTO6 MJ6 x 1 7,80 6,05 4,25 17,5 5,60 -A0060 2608-OTO8 MJ8 x 1 9,80 8,05 5,70 19,5 6,10 EN 3663 EN 4h 6h max. min. max. min. - 0,25 Key 1 Thread a Corresponds to the pipe nominal outside diame
32、ter. According to IS0 5855-3, except MJ6 x I. MJ6 x 1 according to IS0 5855-1. OT: O-ring Installation Tool depends on thread dimension b - u Figure 5 3.3 Adaptor installation 3.3.1 O-ring installation O-ring shall slide over the thread of the port side of the adaptor by using the applicable tools a
33、s shown in figure 6 and table 6. O-ring damage is not accepted. The O-ring and the tool shall be lubricated with the system fluid, or a lubricant compatible with all other system components. Check that O-ring is not twisted and is properly seated in the groove of the adaptor before removing the tool
34、. STD-AECMA PREN 2bO8-ENGL 3999 W LOL2333 0037298 829 Page 10 prEN 2608: 1999 Material: Polytetrafluoroethylene (PTFE) Figure 6 3.3.2 A combination wrench and drive tool according to figure 8 and table 7 should be used to install the adaptor and the lockring into the boss port. Adaptor installation
35、into boss port 3.3.2.1 The hole and the thread of the port side of the adaptor shall be lubricated with the system fluid, or a lubricant compatible with all other system components. Scratches, dents or rough spots are not allowed in O-ring contact area and the sealing cone area on the adaptor or in
36、the port. 3.3.2.2 The thread of the port side of the adaptor shall be inserted into the boss by hand using a clockwise rotation until the adaptor is seated. To avoid possible O-ring damage, the adaptor should not be rotated in a counterclockwise direction. 3.3.2.3 Using the applicable tool engage th
37、e serration of the tool with those on the external serrations of the adaptor lockring as shown in figure 7a. Place a torque wrench of the proper size over the hex of the wrench and apply a torque equal to the minimum value specified in table 8. 3.3.2.4 When prebroaching is already made, note the rel
38、ationship of the serrations of the lockring with respect to the prebroached serrations in the port. If they match, proceed to 3.3.2.6. If the serrations do not match the prebroached serrations in the port, continue to slowly torque the adaptor until the serrations of the lockring match the boss serr
39、ations, without exceeding the maximum torque value according to table 8. This will nomially take between 3“ and 8“ of turning and the maximum value need not be reached if serrations align themselves prior to that value. Do not exceed maximum torque value. 3.3.2.5 between minimum and maximum values s
40、hall be applied according to table 8. For installation on low resistance material, when no pre-broaching is required, a mean torque 3.3.2.6 Apply enough zinc chromate primer, e.g. according to EN 2435-01 with a brush or small syringe to the counterbore area of the boss and below the adaptor lockring
41、 so that primer will be extruded out between external serrations of the lockring and the serrations in the port when lockring is installed. NOTE: Installing design document may specify no primer or sealant in place of or in addition to zinc chromate according to materials and user manufacturing proc
42、ess. 3.3.2.7 equipment. The qualification should also required further tests, e.g. impulse fatigue test. Proof pressure test has to be applied during qualification and after final assembly of the STD-AECMA PREN 2608-ENGL 1999 10323LB 0037299 765 Page 11 prEN 2608: 1999 18 20 22 25 28 32 3.3.2.8 For
43、adaptor lockring installation, use the applicable drive tool according to figure 7b, with an axial load in the direction of the port in order to conform with the maximum value X according to table 1. If the thread of the adaptor is used for this operation, the torque applied to install the lockring
44、shall be less than maximum installation torque of the coupling swivel nut given by the design office, to avoid port damage. MJ24x1,5 2415 2608DW2415214 214 35,OO 28,50 47,3 3,95 37,60 41 43 MJ27 x 1,5 2715 2608 DW2715231 231 37,20 30,65 47,3 3,95 38,lO 41 46 MJ30x1,5 3015 2608DW3015253 253 40,70 34,
45、20 53,l 3,95 38,O 46 36 MJ33 x 1,5 3315 2608 DW3315295 295 44,lO 37,60 53,l 3,95 38,lO 46 47 MJ39 x 1,5 3915 2608 DW3915350 350 50,lO 43,60 63,5 3,95 38,lO 55 53 MJ36x1,5 3615 2608DW3615320 320 48,OO 41,50 57,7 3,95 38,lO 50 32 Key 1 2 3 3 1 5 2 6 Port 4 Apply zinc chromate according to 3.3.2.6 5 Co
46、mbination drive and wrench tool 6 Figure 7a: Adaptor installation 3 4 5 6 1 Adaptor assembly Lockring O-ring Figure 7b: Lockring installation Table 7: Combination drive and wrench tool Dimensions in millimetres STD-AECIA PREN 2bOB-ENGL 1999 = LOLZ3L1 0017300 207 8“30 coupling code Page 12 prEN 2608:
47、 1999 Shear Axial load Installation torque Engagement on adaptor area 112 MPa min, pressure Tool Port Part NO. dimension code EN Nm Burst Key I 2 3 Thread 4 (Thread side) Dimension shall be according to adaptor thread interface (Serration side) Dimensions shall be according to adaptor lockring inter
48、face Spring wire stop in groove Figure 8 Table 8: Installation torque, axial load and shear area 05 06 08 10 12 min. max. mmL N 2608-DW1 O1 0077 077 50 610 43,23 4 843 2608-DW1212098 098 9,o 12,o 69,35 7 740 2608-DW1415125 125 20,o 24,O 102,12 11 412 2608-DWl615136 1 36 34, O 40,O 135,12 15 119 2608
49、-DW1815153 153 48,O 56,O 169,92 19 034 14 2608-DW2015170 16 2608-DW22 1 5 I 92 170 58,O 66,5 219,12 24 503 192 69.0 78.0 274.53 30 760 18 I 2608-DW2415214 I 214 l 82.0 91.5 I 337.55 I 37 728 20 22 32 I 2608-DW3915350 I 350 I 159,O I 177.0 I 894.10 I 100 079 2608-DW2715231 231 98,O 108,O 406,05 45 447 2608-DW3015253 253 106.0 117.0 479.76 53 710 a Corresponds to the pipe nominal outside diameter. DW: Combination Drive and Wrench tool Minimum shear engagement area shown in the assembled dimensional value for the overall engaged area of mating port thr
