1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2011 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: 724-776-4970 (outside USA)
4、Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS1730DAEROSPACESTANDARDAS1730D Issued 1982-09 Reaffirmed 2007-08 Revised 2011-07Superseding AS173
5、0C Coupling, Fuel, Rigid, Threaded Type RATIONALERevised to specify lower bending stress for sizes -48 and above, relocated strain gages near the holding clamp, clarified o-ring criteria and revised repeated assembly requirements for sizes -06 thru -12. 1. SCOPE This specification defines the requir
6、ements for a threaded rigid coupling assembly, which utilizes ferrule type machined tube end fittings, to join tubing and components in aircraft fuel, vent, and other systems. This coupling assembly is designed for use from -65 to 200 F and at 125 psig operating pressure. 1.1 Classification 1.1.1 Th
7、e coupling assemblies shall be of the following types: a. Type I: without wrenching lugs b. Type II: with wrenching lugs 2. APPLICABLE DOCUMENTS The following publications form a part of this document to the extent specified herein. The latest issue of SAE publications shall apply. The applicable is
8、sue of other publications shall be the issue in effect on the date of the purchase order. In the event of conflict between the text of this document and references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations
9、unless a specific exemption has been obtained. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AS567 Safety Cable, Safety Wire, Key Washers, and Cotter Pins
10、for Propulsion Systems, General Practices for Use of AS568 Aerospace Size Standard for O-rings ARP1185 Flexure Testing of Hydraulic Tubing Joints and Fittings AS1731 Coupling, Rigid, Fixed Cavity, Threaded Ferrule Type Tube Ends, Envelope Dimensions Design StandardSAE AS1730D Page 2 of 18AS1732 Body
11、, Coupling, Rigid, Fixed Cavity, Threaded, Ferrule Type Tube Ends, Type I AS1733 Body, Coupling, Rigid, Fixed Cavity, Threaded, Ferrule Type Tube Ends, Type II AS1734 Nut, Coupling, Rigid, Fixed Cavity, Threaded, Ferrule Type Tube Ends, Type I AS1735 Nut, Coupling, Rigid, Fixed Cavity, Threaded, Fer
12、rule Type Tube Ends, Type II AS1736 Washer, Coupling, Rigid, Fixed Cavity, Threaded, Ferrule Type Tube Ends AS1737 Ferrule, Coupling, Rigid, Fixed Cavity, Threaded, Ferrule Type Tube Ends AS4060 Tube Fitting Swaged Joint, Roller Expander Manual Process, Requirements for AS7003 Nadcap Program Require
13、ments ARP9013 Statistical Product Acceptance Requirements AMS-WW-T-700/6 Tube, Aluminum Alloy, Drawn, Seamless, 6061 2.2 U.S. Government Publications Available from the Document Automation and Production Service (DAPS), Building 4/D, 700 Robbins Avenue, Philadelphia, PA 19111-5094, Tel: 215-697-6257
14、, http:/assist.daps.dla.mil/quicksearch/.PPP-B-566 Boxes, Folding Paperboard PPP-B-585 Boxes, Wood, Wirebound PPP-B-676 Boxes, Set-Up VV-P-236 Petrolatum, Technical MIL-HDBK-831 PREPARATION OF TEST REPORTS MIL-L-10547 Liners, Case and Sheet, Overwrap: Water-Vaporproof or Waterproof, Flexible MIL-PRF
15、-680 Performance Specification Degreasing Solvent MIL-PRF-7024 Performance Specification Calibration Fluids, Aircraft Fuel System Components MIL-R-25988/1 Rubber, Fluorosilicone Elastomer, Oil and Fuel-Resistant, O-Rings, Class 1, Grade 70 MIL-STD-129 Military Marking for Shipment and Storage MIL-ST
16、D-130 Identification Marking of U.S. Military Property MIL-STD-810 Environmental Engineering Considerations and Laboratory TestsMIL-STD-889 Dissimilar Metals FED-STD-H28/2 Screw Thread Standards for Federal Services Section 2: Unified Inch Screw Threads - UN and UNR Thread Forms SAE AS1730D Page 3 o
17、f 18A-A-669 Box, Shelf, Stationary Storage (Cancelled; no superseding document) A-A-2807 Box, File (Cancelled; no superseding document) 2.3 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org.AST
18、M B 117 Standard Practice for Operating Salt Spray (Fog) Apparatus ASTM D 1974 Standard Practice for Methods of Closing, Sealing, and Reinforcing Fiberboard Boxes ASTM D 5118/D 5118M Standard Practice for Fabrication of Fiberboard Shipping Boxes ASTM D 5486/D 5486M Standard Specification for Pressur
19、e Sensitive Tape for Packaging, Box Closure, and SealingASTM D 6210 Standard Specification for Fully-Formulated Propylene Glycol-Base Engine Coolant for Heavy-Duty Engines ASTM D 6251/D 6251M Standard Specification for Wood Cleated Panelboard Shipping Boxes 2.4 PRI Publications Available from Perfor
20、mance Review Institute, 161 Thorn Hill Road, Warrendale, PA 15086-7527, Tel: 724-772-1616, www.pri-network.org.AC7112 National Aerospace and Defense Contractors Accreditation Program Requirements for Fluid System ComponentsAC7112/3 NADCAP Audit Criteria for Couplings and Formed Sheet Metal Products
21、PD2001 Qualified Product Management Council Procedures for Qualified Products Group PD2101 Aerospace Quality Assurance, Product Standard, Qualification Procedures, Fluid Systems 2.5 ANSI Publications Available from American National Standards Institute, 25 West 43rd Street, New York, NY 10036-8002,
22、Tel: 212-642-4900, www.ansi.org.ANSI/ASQ Z1.4 Sampling Procedures and Tables for Inspection by Attributes 3. REQUIREMENTS 3.1 Qualification Coupling assemblies supplied in accordance with this procurement specification shall be manufactured by the same processes used to manufacture the couplings whi
23、ch have been subjected to and which have successfully passed the qualification tests specified herein.3.1.1 Manufacturer Qualification A manufacturer producing a product in conformance to this procurement specification shall be accredited in accordance with the requirements of PD2101, AS7003, AC7112
24、 and AC7112/3, and shall be listed in a Performance Review Institute (PRI) Qualified Manufacturers List (QML). SAE AS1730D Page 4 of 183.1.2 Product Qualification All products shall conform to the requirements of this procurement specification and shall be approved in accordance with the requirement
25、s of PD2001 and PD2101 for listing in a Performance Review Institute (PRI) Qualified Parts List (QPL). A responsible agency for the QPL is the Performance Review Institute, 161 Thorn Hill Road, Warrendale PA 15086-7527, phone +1 724-772-1616, Fax +1 724-772-1699. The On-Line QPL is available at www.
26、eAuditN. Additional information regarding the QPL Program is located at www.pri- / Qualified Products / Qualified Products List.3.2 Materials and Finishes Materials and finishes for the components shall be those designated on standards and drawings. All materials and finishes shall be uniform in qua
27、lity, free from defects, suitable for the purpose intended and consistent with good manufacturing practices. 3.2.1 Dissimilar Materials Materials shall possess adequate corrosion-resistance characteristics or shall be suitably protected by the use of finishes to resist corrosion which may result fro
28、m such conditions as dissimilar metal combinations, moisture, salt spray, and high-temperature deterioration. Dissimilar materials are defined by MIL-STD-889. 3.3 Design and Construction The coupling assembly shall be a lightweight rigid connection for fuel, vent, and other system lines using the ba
29、sic principles of O-ring sealing. It shall be designed for use at 125 psig operating pressure and at temperatures ranging from -65 to 200 F. Types shall be in accordance with 1.1.1. 3.3.1 Coupling Components The coupling assembly shall consist of the following components as shown in Table 1. TABLE 1
30、 - COUPLING ASSEMBLY Type I - Without Wrenching Lugs Type II - With Wrenching Lugs One Body - AS1732 /1/ One Body - AS1733 /1/ One Ferrule - AS1737 /1/ One Ferrule - AS1737 /1/ One Nut - AS1734 One Nut - AS1735 One Washer - AS1736 One Washer - AS1736 One O-ring Seal /2/ One O-ring Seal /2/ /1/ Compo
31、nents attached to tubing by roller swaging. /2/ Not part of assembly. Supplied by user. SAE AS1730D Page 5 of 183.3.2 Threads Threads shall be in accordance with Federal Standard FED-STD-H28/2. 3.3.3 Seals MIL-R-25988/1 O-ring seals with sizes in accordance with AS568 shall be used for all test spec
32、imens. O-rings are not considered a part of this specification except for coupling qualification test requirements. O-ring sizes for the couplings are given in Table 2. O-ring failures during qualification testing do not constitute a failure unless the o-ring is damaged by a test part. Any o-ring re
33、placements during testing shall be documented in the test report and failed or damaged o-rings shall be retained as part of the qualification documentation. TABLE 2 - PHYSICAL REQUIREMENTS CouplingSize (Ref) TubeSize (Ref)inchesNegativeOperatingPressure In Hg Positive OperatingPressure psigNegativeP
34、roofPressure in Hg Positive ProofPressure psigMinimumBurst Pressure psigAS568O-ringDash No. (Ref)04 .250 24 125 28 250 375 -012 05 .312 24 125 28 250 375 -013 06 .375 24 125 28 250 375 -014 08 .500 24 125 28 250 375 -016 10 .625 24 125 28 250 375 -018 12 .750 24 125 28 250 375 -020 16 1.000 24 125 2
35、8 250 375 -024 20 1.250 24 125 28 250 375 -028 24 1.500 24 125 28 250 375 -030 28 1.750 24 125 28 250 375 -032 32 2.000 24 125 28 250 375 -034 36 2.250 10 125 12 250 375 -036 40 2.500 10 125 12 250 375 -038 44 2.750 10 125 12 250 375 -040 48 3.000 10 125 12 250 375 -042 56 3.500 10 125 12 250 375 -0
36、44 64 4.000 10 125 12 250 375 -046 72 4.500 10 125 12 250 375 -048 80 5.000 10 125 12 250 375 -050 3.4 Dimensions The coupling assembly envelope dimensions shall be as specified in AS1731. Part dimensions shall be specified in applicable part standards. 3.4.1 Coupling Weight The coupling assembly an
37、d components nominal weights are listed on the applicable standard or drawing. 3.5 Performance The coupling assembly shall meet the following performance requirements. SAE AS1730D Page 6 of 183.5.1 Proof Pressure The coupling assembly shall meet the negative and positive proof pressures listed in Ta
38、ble 2. A decrease in negative pressure exceeding .5 inches Hg within 5 minutes, any visible leakage when pressurized for a minimum of 5 minutes or evidence of any malfunction or yielding shall be cause for rejection. Testing is specified in 4.6.2. 3.5.2 Repeated Assembly The coupling assemblies shal
39、l show no evidence of permanent deformation, damage, or material degradation and shall withstand, without evidence of leaking (sufficient to form a drop), the proof pressure requirements of 3.5.1 after 100 repeated assembly operations. Testing is specified in 4.6.3. 3.5.3 Salt Fog The coupling assem
40、bly shall show no evidence of excessive corrosion, peeling, chipping, or blistering of the finish or exposure of base metal and shall meet the electrical resistance requirement of 3.5.6 and the proof pressure requirements of 3.5.1 after being exposed to salt fog for 168 hours. Test method is specifi
41、ed in 4.6.4. 3.5.4 Rotary Flexure The coupling assembly shall meet the electrical resistance requirement of 3.5.6 and proof pressure requirements of 3.5.1 after being subjected to 1 000 000 planar or rotary flexure cycles. Half of the flexure cycles shall be conducted at room temperature. The remain
42、ing flexure cycles shall be equally divided between flexure testing at 200 F and -65 F. Specimen lengths and deflections shall be in accordance with Tables 3 and 4. Testing is specified in 4.6.5. 3.5.5 Burst The coupling assembly shall not rupture nor show evidence of leakage (sufficient to form a d
43、rop) at any pressure up to the Table 2 burst pressures. Testing is specified in 4.6.6. 3.5.6 Electrical Bonding The electrical resistance of the coupling when measured from tube-to-tube shall not exceed 1.0 : at any time. Testing is specified in 4.6.7. 3.6 Identification of Product Coupling assembli
44、es and parts shall be marked for identification in accordance with the applicable standard or drawing and with applicable parts of MIL-STD-130. 3.7 Cleaning The coupling assemblies as supplied shall be free of oil, grease, dirt or any other foreign material both internally and externally.4. QUALITY
45、ASSURANCE PROVISIONS 4.1 Responsibility for Inspection Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection and test requirements as specified herein. Except as otherwise specified, the supplier may utilize his own facilities
46、 or any commercial laboratory acceptable to PRI for the performance of the inspection and test requirements. PRI reserves the right to witness any of the inspections and tests set forth in the specification, where such inspections and tests are deemed necessary to ensure supplies and services confor
47、m to prescribed requirements. SAE AS1730D Page 7 of 184.2 Classification of Inspections The examining and testing of assemblies shall be classified as: a. Qualification inspections (see 4.3) b. Quality conformance inspections (see 4.4) 4.3 Qualification Inspections 4.3.1 Qualification Test Specimens
48、 Test specimens shall be in accordance with Figures 1 or 2 and Table 3. The number of specimens are specified in 4.3.2. Tubing for fabrication of the test specimens shall be 6061-T4 in accordance with AMS-WW-T-700/6 with wall thickness as shown in Table 4. Attachment of ferrule and body to tubing sh
49、all be in accordance with AS4060. FIGURE 1 - TEST SPECIMEN CONFIGURATION SAE AS1730D Page 8 of 18FIGURE 2 - FLEXURE TEST SPECIMEN CONFIGURATION TABLE 3 - TEST SPECIMEN LENGTHS AND END FITTING CONFIGURATIONS Specimens 1, 2, 5, & 6 /1/ 3 & 4 /2/ CouplingSizeL1 L2 L1 L2 L4 /3/ inches .2 inches .2 inches .060 inches .2 inches .2 04 6 6 05 6 6 06 6 6 8.0 9 2.3 08 6 6 10 6 6 12 6 6 10.1 9 2.3 16 6 6 13.2 9 2.
