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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 2008 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.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS3044F AMS3044F AEROSPACE MATERIAL SPECIFICATION Issued 1974-03 Revised 2008-12 Superseding AMS
5、3044E Magnetic Particles, Fluorescent Wet Method, Dry Powder RATIONALE AMS3044F revises 3.2.2 for ultraviolet light, 4.3.3 to specify water conditioning agents in accordance with AS4792 and is a Five Year Review and update of this specification. 1. SCOPE 1.1 Form This specification covers fluorescen
6、t magnetic particles in the form of a dry powder. 1.2 Application These particles have been used typically as the inspection medium in wet, fluorescent magnetic particle inspection system as defined in ASTM E 1444 using either an oil or conditioned-water vehicle, but usage is not limited to such app
7、lication. 1.3 Safety - Hazardous Materials While the materials, methods, applications, and processes described or referenced in this specification may involve the use of hazardous materials, this specification does not address the hazards which may be involved in such use. It is the sole responsibil
8、ity of the user to ensure familiarity with the safe and proper use of any hazardous materials and to take necessary precautionary measures to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase ord
9、er forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue o
10、f that document shall apply. SAE AMS3044F - 2 - 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. AMS2641Vehicle, Magnetic Particle Inspection, Petroleum Base
11、 AS4792 Water Conditioning Agents for Aqueous Magnetic Particle Inspection AS5282Tool Steel Ring for Magnetic Particle Inspection 2.2 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. ASTM D 1
12、966 Test Method for Foots in Raw Linseed Oil ASTM E 11 Wire-Cloth Sieves for Testing Purposes ASTM E 1444 Magnetic Particle Examination 3. TECHNICAL REQUIREMENTS 3.1 Material The product shall be composed of durable fluorescent magnetic particles, suitable for long time use, which have been treated
13、to obtain the fluorescent color specified. This dry powder shall be formulated for use with an aqueous vehicle containing appropriate conditioning agents, a magnetic particle vehicle conforming to AMS2641, or equivalent odorless oil, and shall disperse evenly and thoroughly in the recommended vehicl
14、e. 3.2 Properties The product shall conform to the following requirements; tests shall be performed, on the product supplied, in accordance with specified test methods using a test suspension prepared as in 4.3.3. 3.2.1 Contamination The product shall show no evidence of foreign material, agglomerat
15、ion, or scum, determined by visual examination of the test suspension at the following times: 3.2.1.1 During preparation of the test suspension as in 4.3.3. 3.2.1.2 After mixing the test suspension, allowing it to stand for not less than 30 minutes, and agitating it slightly. 3.2.1.3 During tests to
16、 determine conformance with other characteristics of the product. 3.2.2 Color The color of the magnetic particles shall be fluorescent in the yellow-green range, unless another color is specified by purchaser. The color shall be determined by observing the indications formed, during the sensitivity
17、test of 3.2.5, in a darkened area under ultraviolet light with a minimum UV-A intensity of 1000 W/cm2 at the inspection surface. Visible light shall not exceed 2 foot-candles (20 lx) at the inspection surface. SAE AMS3044F - 3 - 3.2.3 Particle Size The fluorescent magnetic particles shall be of such
18、 size that not less than 98% by weight shall pass through a 3-inch (76-mm) diameter U.S. Standard No. 325 (45 m) sieve, as defined in ASTM E 11, determined by passing a 1-quart (1-L) sample of thoroughly-mixed test suspension, as in 4.3.3, through the screen/sieve. After the test suspension liquid v
19、ehicle has completely passed through the sieve, rinse with 1 quart (1 L) of the original liquid vehicle. Dry the sieve to remove all of the liquid and determine the dry weight of the residual particulate material not passing through the screen/sieve as related to the original weight of the particula
20、te material in the sample, expressed in percentage. 3.2.4 Durability Fluorescent magnetic particles shall retain their initial sensitivity, color, and brightness of indication after placing not less than 400 mL of thoroughly-mixed test suspension, prepared as in 4.3.3, in a 1-quart (1-L) capacity co
21、nstant speed blender, operating the blender at approximately 10,000 to 12,000 rpm for a total of 10 minutes, in 2 minute intervals, allowing the suspension to cool for 5 minutes between stirring cycles, and, at the end of the cumulative 10 minute blending, conduct the sensitivity test of 3.2.5. 3.2.
22、5 Sensitivity 3.2.5.1 Ring Test The product shall show a seven-hole indication on the ring test specimen defined in 4.3.4, determined by placing the ring on a 1-inch (25-mm) diameter copper bar and circularly magnetizing the ring in a standard magnetic particle inspection unit by passing 2500 ampere
23、s of direct current through the copper bar immediately before flooding the ring with agitated test suspension that has passed the contamination (3.2.1) and concentration (4.3.3) tests. Examine the ring in a darkened area under blacklight as defined in 3.2.2. The test shall be repeated using a sample
24、 of test suspension that has been subjected to the durability test of 3.2.4. 3.2.5.2 Flaw-to-Background Test Obtain a test part, or prepare a test specimen, containing flaws of the size expected to be found in production inspection. The surface finish of the test specimen shall be representative of
25、production parts. Magnetize and flood the test specimen as specified in 3.2.5.1, using a sample of agitated test suspension that has passed the contamination (3.2.1) and concentration (4.3.3) tests. View the flaw indications in a darkened area under blacklight as defined in 3.2.2. Indications shall
26、be sharp and distinct. Background fluorescence around the flaws shall be of a level which will neither obscure the flaw indications nor cause difficulty in flaw detection. The test shall be repeated using a sample of test suspension that has been subjected to the durability test of 3.2.4. 3.2.6 Long
27、-Term Durability Fluorescent magnetic particles shall retain their initial sensitivity, color, and brightness of indication after allowing 1.5 quarts (1.4 L) of freshly-prepared, thoroughly-mixed test suspension, prepared as in 4.3.3, to stand undisturbed at room temperature for not less than 14 day
28、s. Following the dwell, the test suspension shall be well dispersed when stirred and shall meet the requirements of 3.2.1 through 3.2.5. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The manufacturer of the product shall supply all samples for manufacturer s tests and shall be re
29、sponsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements. -,-,- SAE AMS3044F - 4 - 4.2 Classification of Tests 4.2.1 Acceptance Tests Contaminatio
30、n (3.2.1), color (3.2.2), particle size (3.2.3), durability (3.2.4), and sensitivity (3.2.5) are acceptance tests and shall be performed on each lot. 4.2.2 Preproduction Tests All technical requirements are preproduction tests and shall be performed prior to or on the initial shipment of the product
31、 to a purchaser, when a change in ingredients and/ or processing requires reapproval as in 4.4.2, and when purchaser deems confirmatory testing to be required. 4.3 Sampling and Testing Shall be as follows: 4.3.1 Acceptance Tests Sufficient product shall be taken at random from each lot to perform al
32、l required tests. The number of determinations for each requirement shall be as specified in the applicable test procedure or, if not specified therein, not less than three. 4.3.1.1 Lot A lot shall be all product produced in a single production run from the same batch of raw materials under the same
33、 fixed conditions and presented for manufacturer s inspection at one time. 4.3.1.2 A statistical sampling plan, acceptable to purchaser, may be used in lieu of sampling as in 4.3.1. 4.3.2 For Preproduction Tests As agreed upon by purchaser and vendor. 4.3.3 Test Suspension Preparation The test suspe
34、nsion shall be prepared in accordance with manufacturer s recommendation by adding sufficient dry powder solids to distilled water containing conditioning agents in accordance with AS4792 or to AMS2641 magnetic particle inspection vehicle, usually 0.025 to 0.18 ounce per gallon (0.19 to 1.3 g/L), to
35、 produce a suspension concentration of 0.10 to 0.40 mL of magnetic particles in 100 mL of suspension. The concentration shall be verified by mixing the suspension thoroughly, filling a 100-mL calibrated centrifuge tube as specified in ASTM D 1966, allowing the tube to stand undisturbed for at least
36、30 minutes, and reading, on the calibrated tube, the volume of the particles settled from the suspension. 4.3.4 Tool Steel Test Ring Shall be in accordance with AS5282. 4.4 Approval 4.4.1 Sample product shall be approved by purchaser before product for production use is supplied, unless such approva
37、l be waived by purchaser. Results of tests on production product shall be equivalent to those on the approved sample. -,-,- SAE AMS3044F - 5 - 4.4.2 Manufacturer shall use ingredients, manufacturing procedures, processes, and methods of inspection on production product that are the same as those use
38、d on the approved sample. If necessary to make any changes in ingredients, processing techniques, or manufacturing procedures, manufacturer shall submit for reapproval a statement of the proposed changes in ingredients and/or processing and, when requested, sample product. Production product shall n
39、ot be shipped prior to receipt of reapproval. 4.5 Reports The vendor of the product shall furnish with each shipment a report stating that the product conforms to all technical requirements. This report shall include the purchase order number, lot number, AMS3044F, manufacturer s material designatio
40、n, and date of manufacture. 4.6 Resampling and Retesting If any sample used in the above tests fails to meet specified requirements, disposition of the product may be based on the results of testing three additional samples for each original nonconforming sample. Failure of any retest sample to meet
41、 specified requirements shall be cause for rejection of the product represented. Results of all tests shall be reported. 5. PREPARATION FOR DELIVERY 5.1 Packaging and Identification 5.1.1 The product shall be packaged in containers of a type and size acceptable to purchaser. 5.1.2 A lot of magnetic
42、particles may be packaged in small quantities and delivered under the basic lot approval provided lot identification is maintained. 5.1.3 Each package or container shall be identified with a durable label, that is legible on receipt, with not less than the following information: MAGNETIC PARTICLES,
43、FLUORESCENT, WET METHOD, DRY POWDER AMS3044F COLOR _ MANUFACTURERS IDENTIFICATION_ DATE OF MANUFACTURE _ * _ LOT NUMBER _ QUANTITY _ MANUFACTURERS INSTRUCTIONS FOR USE _ * _ APPROPRIATE WARNINGS OR PRECAUTIONARY NOTICES _ * May be included in the manufacturers identification or lot number. * May be
44、on a separate sheet. 5.1.4 Individual packages or containers shall be packed in an exterior shipping container capable of protecting the product, during shipment and storage, against damage from exposure to moisture, weather, or any other normal hazard. 5.1.5 Containers of the product shall be prepa
45、red for shipment in accordance with commercial practice and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the product to ensure carrier acceptance and safe delivery. SAE AMS3044F - 6 - 6. ACKNOWLEDGMENT A vendor shall mention this sp
46、ecification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Product not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. 8. NOTES 8.1 A change bar ( l ) located in the left margin is fo
47、r the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this document. An (R) symbol to the left of the document title indicates a complete revision of the document, including technical revisions. Change bars and (R) are not used in original publications, nor in documents that contain editorial changes only. 8.2 Terms used in AMS are clarified in ARP1917. 8.3 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary: dimensions and properties in SI units and the Celsius temperatur