SAE-AS-1960-1986-R2007.pdf
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1、AEROSPACE STANDARD AS1960 Issued1986-06 Reaffirmed2007-08 Coupling Assembly, V-Band, Sheet Metal Flange, Pneumatic Tube 1.SCOPE: 1.1This specification defines the requirements for a grooved clamp coupling and flanges suitable for joining intermediate pressure and temperature ducting in aircraft air
2、systems. The rigid coupling joint assembly, hereafter referred to as “the joint“, shall operate within the temperature range of -65 F to +800 F. 2.APPLICABLE DOCUMENTS: The following documents of the issues in effect on the date of invitation for bid or request for proposal shall form a part of this
3、 specification to the extent specified herein. 2.1Specifications: 2.1.1Military: MIL-W-6858Welding, Resistance, Aluminum Magnesium, Nonhardening Steels or Alloys, Nickel Alloy, Heat Resisting Alloys, and Titanium Alloy, Spot and Seam MIL-W-8611Welding, Metal Arc and Gas, Steels and Corrosion and Hea
4、t Resistant Alloys; Process for MIL-S-8879Screw Threads, Controlled Radius Root with Increased Minor Diameter: General Specification for RATIONALE This document has been reaffirmed to comply with the SAE 5-Year Review policy. SAE Technical Standards Board Rules provide that: “This report is publishe
5、d 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 therefrom, is the sole responsibility of the user.” SAE reviews each technical re
6、port at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2007 SAE International All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form o
7、r 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) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.
8、sae.org Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 21:16:29 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE AS1960 - 2 - 2.2Standards: 2.2.1Military: DOD-STD-100Engineering Drawing
9、Practices MIL-STD-129Marking for Shipment and Storage MIL-STD-130Identification Marking of U.S. Military Property MIL-STD-810Military Standard Environmental Test Methods MIL-STD-831Test Reports, Preparation of 3.REQUIREMENTS: 3.1Qualification: The joint furnished under this specification shall be a
10、product identical to specimens which have successfully passed the tests specified in Section 4 of this specification. 3.2Materials: The joint component materials shall be uniform in quality, free from defects, suitable for service, consistent with good manufacturing practices, and in conformance wit
11、h the applicable specifications and requirements stated herein. Specific materials used in the joint components shall be specified on the applicable AS standard drawing. 3.2.1Duct Material: Duct materials will be stainless steel and titanium. The coupling joint shall meet the requirements herein whe
12、n assembled on stainless or titanium flanges. 3.2.2Equipment Flanges: Equipment flange materials may be stainless steel, titanium or aluminum. The flange may be solid, machined, forged or cast shape. For an aluminum flange joint, the maximum temperature is +260 F. 3.3Design and Construction: The joi
13、nt consisting of coupling and flanges listed in Table 1 shall fulfill all design and performance requirements of this specification. 3.3.1Coupling: The material of the coupling shall be corrosion resistant alloy as specified on the applicable AS drawing noted in Table 1. 3.3.1.1Coupling Retainer Str
14、ength: The coupling shall maintain joint integrity at operating pressure in the event of coupling retainer failure. The coupling shall be so designed that 3/4 of the coupling retainer circumference shall be sufficient to hold the joint and leakage shall not exceed 0.03 SCFM per inch of diameter at o
15、perating pressure of Table 2 at 800 F. Copyright SAE International Provided by IHS under license with SAELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 21:16:29 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE AS1960 - 3 - 3.3.2Flanges: The material of
16、 the flanges shall be corrosion resistant alloy as specified on the applicable AS drawing shown in Table 1. TABLE 1 - Joint Component Control Numbers 3.3.3Welding: Resistance or fusion welding shall be in accordance with MIL-W-6858 or MIL-W-8611. 3.3.4Bolt: Bolt material shall be as specified on the
17、 applicable AS drawing, with an ultimate tensile strength of 160,000 psi. 3.3.4.1Bolt Threads: Bolt threads shall conform to MIL-S-8879, and may be lubricated using an anti-sieze high temperature lube. 3.3.5Nut: The nut shall be a self locking type with a running torque of 1.8 to 30 inch lbs. The ma
18、terial shall be as specified on the applicable coupling drawing. The nut shall have a minimum life of ten (10) complete full on-off cycles without damage to the bolt or nut or threads when installed within 120 rpm on the bolt. 3.3.6Safety Latch: The safety latch, when specified shall be a permanent
19、part of the coupling and shall engage and maintain joint integrity in the event of primary bolt failure. Joint leakage shall not be in excess of 0.03 (SCFM) per inch of diameter at operating pressure of Table 2 while being supported only by the safety latch (failed bolt case). The safety latch shall
20、 not require any tools for its operation or release. The safety latch shall be automatically positioned when the clamp is installed, and must be designed so that failure of the primary bolt is clearly evident on visual inspection. 3.3.7Duct Installation: The coupling joint shall be so designed as to
21、 permit removal of a single duct section without moving mating ducting axially. Each joint must be self aligning during assembly. The self aligned joint may have a total of .06 transverse mismatch and must meet the requirements herein. Copyright SAE International Provided by IHS under license with S
22、AELicensee=Defense Supply Ctr/5913977001 Not for Resale, 12/04/2007 21:16:29 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE AS1960 - 4 - TABLE 2 - Minimum Rated Limit Load Capability Copyright SAE International Provided by IHS under license with SAELicensee=Defense Sup
23、ply Ctr/5913977001 Not for Resale, 12/04/2007 21:16:29 MSTNo reproduction or networking permitted without license from IHS -,-,- SAE AS1960 - 5 - 3.4Temperature: The joints shall meet the requirements of this specification under any combination of ambient/fluid temperature exposure within the range
24、of -65 F to +800 F. 3.5Performance: The values specified herein shall define the requirements for satisfactory performance and shall apply to performance under the conditions as specified in 3.4. 3.5.1Static Leakage: The joint, consisting of the coupling and flanges noted in 3.3. shall show no evide
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