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 2010 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: +1 724-776-4970 (outside US
4、A) 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/ARP5369AAEROSPACERECOMMENDEDPRACTICEARP5369 REV. A Issued 1998-11 Reaffirmed 2004-12 Revised 20
5、10-08Superseding ARP5369 Guidelines for Wire Identification MarkingUsing the Hot Stamp Process RATIONALEThe ARP is being updated during the 5 year review to remove reference to inactive standards and introduce reference to new standards. FOREWORDThis SAE Aerospace Recommended Practice (ARP) is inten
6、ded to serve as a guide toward standard practice and is subject to change to keep pace with experience and technical advances. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE ARP5369A Page 2 of 7TABLE OF CONTENTS 1. SCOPE 32. REFERENCES 32.1 Appl
7、icable Documents 32.1.1 SAE Publications . 32.1.2 U.S. Government Publications 32.2 Definitions . 42.3 Symbols and Abbreviations 43. REQUIREMENTS . 43.1 Materials 43.2 Equipment . 43.3 Maintenance 54. QUALITY ASSURANCE PROVISIONS 54.1 Quality Control Inspection . 54.2 Process Qualification Testing .
8、 65. NOTES 7Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE ARP5369A Page 3 of 71. SCOPE 1.1 These guidelines have been written to provide process information regarding the hot stamp method of marking wire identification directly on aerospace wir
9、es and cables. 1.2 This document is not intended to encourage the use of hot stamp marking or to endorse the related process. This method of marking wire identification is prohibited on any aerospace vehicle wiring that is required to conform to the provisions of AS50881. Methods which do not deform
10、 wire or cable insulation, such as Ink Jet, Dot Matrix or UV Laser marking are encouraged as a means of minimizing the possibility of insulation damage, particularly on insulation constructions of less than 0.010 in wall thickness. AIR5575 provides a comprehensive report on the issue of wire damage
11、than can occur when hot stamp wire marking process is employed. 1.3 In recognition that the present use of hot stamp wire marking is in some operations and may continue for an extended period, the guidelines provided in this document are intended to provide process control information necessary to m
12、inimize the possibility of insulation damage. 2. REFERENCES 2.1 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 issue of the other publications shall be the issue in effect o
13、n 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 unless a specific exemption has been obtained. 2.1.1 SAE
14、 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.AS1241 Fire Resistant Phosphate Ester Hydraulic Fluid For Aircraft AS50881 Wiring, Aerospace Vehicle AS4373 Test Met
15、hods For Insulated Electric Wire ARP5607 Legibility of Print on Aerospace Wires and Cables AIR5575 Hot Stamp Wire marking Concerns for Aerospace Vehicle Applications 2.1.2 U.S. Government Publications Available from Document Automation and production Service (DAPS), Building 4D, 700 Robbins Avenue,
16、Philadelphia, PA 19111-5094, Tel: 215-697-6257, http:/assist.daps.dla.mil/quicksearch/.TT-I-735 Isopropyl Alcohol MIL-PRF-5606 Hydraulic Fluid, Petroleum Base, Aircraft, Missile, and Ordnance MIL-DTL-5624 Turbine Fuel, Aviation, Grade JP-4, JP-5, and JP-5/JP-8 ST MIL-PRF-7808 Lubricating Oil, Aircra
17、ft Turbine Engine, Synthetic Base MIL-DTL-83133 Turbine Fuel, Aviation, Kerosene Types, NATO F-34 (JP-8) and NATO F-35 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE ARP5369A Page 4 of 72.2 Definitions HOT STAMP MARKING: Hot stamp marking uses a
18、 heated typeface to transfer pigment from a ribbon or foil to the surfaces of wires or cables. PRESSURE: In the context of this specification, pressure shall be interpreted as the pneumatic air pressure required to provide suitable force to the printhead to obtain acceptable markings. DWELL TIME: Th
19、e specific length of time that is required to mark each individual character on a wire or cable. TEMPERATURE: In the context of this specification, temperature shall be interpreted as the machine setting for the heat applied during the marking process. 2.3 Symbols and Abbreviations UV Ultraviolet ps
20、i Pounds per square inch 3. REQUIREMENTS 3.1 Materials 3.1.1 Foils: A variety of types of marking foils are available from various manufacturers. The type of ribbon or foil to be used for a specific application is generally selected to provide compatibility with the manufacturers marking equipment a
21、nd the wire or cables insulation material and construction. Resistance to abrasion and resistance to aircraft fluids can also vary with the type of foil used. The specific color of identification marking also affects the selection of foil types. Consult your wire marking equipment and foil manufactu
22、rers for product recommendations for specific applications. CAUTION: The foils should be stored in accordance with the foil manufacturers recommendations and not used after the stated shelf life has expired. 3.2 Equipment 3.2.1 Marking Machines: A variety of wire marking machines have been developed
23、 and are in use at various facilities. Each has specific attributes. These machines are generally adjustable in terms of marking temperature, pressure and dwell time. CAUTION: Typewheels, marking type and fixtures must be selected on the basis of the outside diameter, not gauge, of the wire to be pr
24、inted. The proper selection and sizing of these items is critical to achieving maximum efficiency of the printer with a minimum of insulation penetration. It is not recommended that the Hot stamp process be used on wire with outside diameters of less than 0.035 in. 3.2.2 Adjustments: Consult your wi
25、re marking equipment manufacturer for specific adjustments of the recommended temperature, pressure and dwell time settings for each type of wire insulation construction to be marked. It may be advisable to send examples of wire to be marked to the equipment manufacturer as a means of ensuring that
26、appropriate machine settings are identified. This can be particularly helpful when new wire constructions are encountered. Wires of the same part number from different manufacturers will vary in their markability. Settings for temperature, pressure and dwell time may need to be frequently adjusted i
27、n order to maintain acceptable wire marking contrast and durability. With some insulation materials, adjustments may be required for each new reel of wire to be marked, even if the wire is of the same part number and manufacturer as the previously marked reel. The pressure necessary to obtain suitab
28、le print results is determined by the substrate being printed, the length of text to be applied and the condition of the equipment being used. In areas of high air demand, an air accumulator may be required in order to maintain print head pressure and assure consistent print quality. Provided by IHS
29、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-SAE ARP5369A Page 5 of 73.2.3 Typewheels: The selection of appropriate typewheels is dependent on character height, width and radius, the type of marking equipment used, the durometer or resiliency of the wire insulat
30、ion and the outside diameter of the wire to be marked. CAUTION: To avoid insulation damage, it is recommended that curved face type be used on smaller diameter wires. Consult the specific manufacturers instructions for recommended typewheels. 3.3 Maintenance 3.3.1 All printing equipment shall be kep
31、t clean. Dereeling apparatus for transporting wire between its reel or container and the marking equipment shall be inspected frequently to ensure that it is smooth running and free of surface irregularities, burrs, etc., which might damage wire or cable insulation. Regular maintenance of pneumatic
32、systems is required so as to assure that a clean, dry air source providing 100 psi regulatable air is provided. CAUTION: Typewheels and wire fixtures should be inspected regularly and replaced on an as needed basis to allow the best results when printing. 4. QUALITY ASSURANCE PROVISIONS 4.1 Quality
33、Control Inspection 4.1.1 Frequency of Inspection: Tests and examinations of 4.1.2 and 4.1.3 shall be performed on an ongoing basis at such times and with such quantity of samples as specified by the wire marking processors quality assurance activity. As a minimum, these examinations should be perfor
34、med whenever a different reel of wire or cable is put on the machine, whenever adjustments have been made to pressure, temperature, or dwell time, and when any change to equipment or marking foils has taken place. 4.1.2 Legibility: All characters must be legible and completely understood at 15 inche
35、s 2 inches in an ambient light of 30 foot candles, nominal. The wire ID information must be clear without magnification other than spectacles or contact lenses and read error-free. For additional information see ARP5607: Legibility of Print on Aerospace Wires and Cables. 4.1.3 Mandrel Wrap Examinati
36、on: A specimen of marked wire that is at least 12 in long shall be subjected to 5 cycles of bending at room temperature. One complete cycle shall consist of tightly winding the wire (5 loops minimum) around a mandrel, specified in Table 1, unwinding and reverse winding the wire. At least 1 marked pa
37、ttern shall be on the outside of the wire during the wrapping. After the fifth cycle, there shall be no visible evidence of cracking, piercing, wrinkling or splitting of the insulation when subjected to magnification between 6 and 10 times in an ambient light of 30 ft candles. Specimens used for thi
38、s test should not be used for installation on an aircraft. TABLE 1 BEND TEST MANDREL DIAMETERS Wire Size Mandrel Diameter (0.03 in) 26 0.125 24 0.125 22 0.250 20 0.250 18 0.250 16 0.375 14 0.500 12 0.500 10 and larger 10X wire outside diameter Provided by IHSNot for ResaleNo reproduction or networki
39、ng permitted without license from IHS-,-,-SAE ARP5369A Page 6 of 74.1.4 Acceptance Tests: 100% of wires and cables marked with the hot stamp method shall be subjected to the following dielectric test. Tests should be conducted using an in-line spark tester or a wet dielectric test (see 4.2.6). Leaka
40、ge current shall not exceed 20 mA when subjected to a dielectric withstanding voltage at the specified voltage at 60 Hz rms, for a minimum of 20 s. Voltage shall be ramped up and down at a rate of 500 V/s. For insulated wires, a 2500 V potential shall be applied between the conductor and the surface
41、 of the insulation. For single conductor shielded and jacketed cable, a 1000 V potential shall be applied between the shield and the surface of the outer jacket insulation. This procedure is not applicable to coaxial and other RF cables, and shielded MIL-C-85485 Filter Line Cable, which has a semi-c
42、onductive shield jacket. Any sign of dielectric failure, such as arc-over, flashover, leakage current in excess of 20 mA or a steady increase in leakage current shall be cause for rejection. CAUTION: It has been demonstrated that bead chain spark testers may not always detect all dielectric failures
43、. 4.2 Process Qualification Testing 4.2.1 Process Requirements: The following requirements are intended as a means of qualifying the marking characteristics and should not to be used on production wiring runs. Test procedures described herein are consistent with the procedures outlined in AS4373 Met
44、hod 711. A successful qualification should produce markings that meet the marking characteristics specified in MIL-W-5088 and AS50881 without causing insulation degradation. Tests designed for qualifying the marking characteristics should be undertaken whenever new or replacement equipment or markin
45、g foils are introduced and the first time that marking a new wire or cable type is initiated. Periodic testing of example specimens is also recommended to assure that the materials and processes incorporated in the hot stamp marking process produce consistent results. The frequency of the periods fo
46、r testing the marking process should be based on the production usage time of the equipment. 4.2.2 Specimens: At least 3 samples, consisting of 5 specimens of 3 ft minimum length shall be tested. All specimens shall be tested for abrasion resistance in accordance with 4.2.3. One sample shall be subs
47、equently subjected to each of the tests for thermal aging, fluid immersion, and wet dielectric withstanding described in 4.2.4, 4.2.5, and 4.2.6. 4.2.3 Abrasion Resistance: All specimens to be tested shall be mounted in the specimen clamp of a scrape abrasion tester or in an equivalent fixture so th
48、at the abrading needle of the scrape abrasion tester will make continuous contact with the marking on the specimen. At least 3 marks shall be tested. A weight of 500 g, including the weight of the fixture, shall be applied through the needle to the identification marking. The abrading needle shall be 0.025 in 0.002 in in diameter and shall be securely attached to a machined clamp that holds the needle in compression while it reciprocates along the surface of the wire. The specimen shall be subjected to 125 cycles (250 stro
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