SAE AMS 2416L-2010 Plating Nickel-Cadmium Diffused《电镀和镍镉扩散》.pdf
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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 there
2、from, 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 m
3、ay 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 U
4、SA) 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/AMS2416L AEROSPACE MATERIAL SPECIFICATION AMS2416 REV. L Issued 1955-08 Revised 2010-12 Super
5、seding AMS2416K Plating, Nickel-Cadmium Diffused RATIONALE AMS2416L results from a Five Year Review and update of this specification. NOTICE ORDERING INFORMATION: The following information shall be provided to the plating processor by the purchaser. 1) Purchase order shall specify not less than the
6、following: AMS2416L Plating thickness desired. See 3.3.1. Basis metal to be plated Tensile strength or hardness of the basis metal Pre-plate stress relief to be performed by plating processor (time and temperature) if different from 3.1.1 Special features, geometry or processing present on parts tha
7、t requires special attention by the plating processor Minimum thickness on internal surfaces, if required. See 3.3.1.1. Optional: Periodic testing frequency (4.2.2) and sample quantity (4.3.3) Quantity of pieces to be plated 2) Parts manufacturing operations such as heat treating, forming, joining a
8、nd media finishing can affect the condition of the substrate for plating, or if performed after plating, could adversely affect the plated part. The sequencing of these types of operations should be specified by the cognizant engineering organization or purchaser and is not controlled by this specif
9、ication. SAE AMS2416L Page 2 of 9 1. SCOPE 1.1 Purpose This specification covers the requirements for an electrodeposit of cadmium diffused into an electrodeposit of nickel on carbon, low-alloy, and corrosion-resistant steels. 1.2 Application This coating has been used typically to prevent corrosion
10、 of carbon, low-alloy, and corrosion resistant steel parts that may operate in service up to 900 F (482 C), but usage is not limited to such applications. This process is not suitable for use on parts of complex shape where minimum nickel plate thickness requirements cannot be met and on parts whose
11、 hardness or strength would be reduced below drawing or specification requirements by heating to 640 F (338 C). 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 sp
12、ecification does not address the hazards which may be involved in such use. It is the sole responsibility 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.
13、1.4 Warning This document includes cadmium as a plating material. The use of cadmium has been restricted and/or banned for use in many countries due to environmental and health concerns. The user should consult with local officials on applicable health and environmental regulations regarding its use
14、. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order 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 reference
15、d document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 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 (ou
16、tside USA), www.sae.org. AMS2750 Pyrometry 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 B 117 Operating Salt Spray (Fog) Testing Apparatus ASTM B 487 Measurement of Metal and Oxi
17、de Coating Thicknesses by Microscopical Examination of a Cross Section. ASTM B 499 Measurement of Coating Thicknesses by the Magnetic Method; Nonmagnetic Coatings on Magnetic Basis Metals ASTM B 504 Measurement of Thickness of Metallic Coatings by the Coulometric Method SAE AMS2416L Page 3 of 9 ASTM
18、 B 567 Measurement of Coating Thickness by Beta Backscatter Method ASTM B 568 Measurement of Coating Thickness by X-ray Spectrometry ASTM B 636 Measurement of Internal Stress of Plated Metallic Coatings With the Spiral Contractometer ASTM E 376 Measuring of Coating Thickness by Magnetic-Field or Edd
19、y-Current (Electromagnetic) Test Methods 3. TECHNICAL REQUIREMENTS 3.1 Preparation 3.1.1 Stress Relief Treatment All steel parts having hardness 40 HRC or above and that are machined, ground, cold formed or cold straightened shall be cleaned to remove surface contamination and thermally stress relie
20、ved before plating for relief of residual tensile stresses. Temperatures to which parts are heated shall be such that maximum stress relief is obtained without reducing hardness of parts below drawing limits, but, unless otherwise specified, not less than 275 F (135 C) for not less than 5 hours for
21、parts having hardness of 55 HRC or higher, or not less than 375 F (191 C) for not less than 4 hours for other parts. Residual tensile stresses have been found to be damaging during electrofinishing. 3.1.1.1 For parts, excluding nitrided parts, having a hardness of 55 HRC and above, including carburi
22、zed and induction hardened parts, stress relieve at 275 F 25 (135 C 14) for a minimum of 5 hours. 3.1.1.2 For parts having a hardness less than 55 HRC, stress relieve at 375 F 25 (191 C 14) for a minimum of 4 hours. Nitrided parts fall into this category. Higher temperatures shall be used only when
23、specified or approved by the cognizant engineering organization. 3.1.1.3 For peened parts, if stress relief temperatures above 375 F (191 C) are elected, the stress relief shall be performed prior to peening or the cognizant engineering organization shall be consulted and shall approve the stress re
24、lief temperature. 3.1.2 The plating shall be applied over a surface free from water breaks. The cleaning procedure shall not produce pitting or intergranular attack of the basis metal and shall preserve dimensional requirements. 3.1.3 Except for barrel plating, electrical contact points shall be as
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