SAE-AMS-2470M-2007.pdf
《SAE-AMS-2470M-2007.pdf》由会员分享,可在线阅读,更多相关《SAE-AMS-2470M-2007.pdf(8页珍藏版)》请在三一文库上搜索。
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 2007 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: custsvcsae.org SAE WEB ADDRESS: http:/www.sae.org AMS 2470M AEROSPACE MATERIAL SPECIFICATION Issued JAN 1940 Revised APR 2007 Superseding AMS 2470L Anodic Treatment of Aluminum Alloys Chromic Acid Process RATIONALE This specification revision was issued as part of the SAE Fi
5、ve Year Review process. ORDERING INFORMATION: The following information shall be provided to the processor by the purchaser. 1) Purchase order shall specify not less than the following: AMS 2470M Basis metal to be anodized Required color, if dyed Special features, geometry or processing present on p
6、arts that requires special attention by the processor Quantity of pieces to be anodized 2) Parts manufacturing operations such as heat treating, forming, joining and media finishing can affect the condition of the substrate and adversely affect the finished part. The sequencing of these types of ope
7、rations should be specified by the cognizant engineering organization or purchaser and is not controlled by this specification. 1. SCOPE 1.1 Purpose This specification establishes the requirements for anodic coatings on aluminum alloys. 1.2 Application This process has been used typically to increas
8、e corrosion resistance and to provide surfaces which will promote adherence of paint and other organic finishes, and has been found useful for assemblies which have faying surfaces and/or which may trap electrolyte, but usage is not limited to such applications. 1.2.1 This process is primarily appli
9、cable to aluminum and aluminum alloy parts which have nominal copper content not greater than 5% by weight or total nominal alloy content not greater than 7.5% by weight, AMS 2471 being recommended for parts having higher alloy content. Coating may be dyed if specified, but AMS 2472 is recommended w
10、here a colored finish is required. SAE AMS 2470M - 2 - 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 inv
11、olved 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 measure to ensure the health and safety of all personnel involved. 2. APPLICABLE DOCUMENTS The issue of the following documen
12、ts 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 referenced document has been cancelled and no superseding document ha
13、s 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 (outside USA), www.sae.org. AMS 2471 Anodic Treatment of Alumin
14、um Alloys, Sulfuric Acid Process, Undyed Coating AMS 2472 Anodic Treatment of Aluminum Alloys, Sulfuric Acid Process, Dyed Coating AMS 2473 Chemical Film Treatment for Aluminum Alloys, General Purpose Coating AMS 4037 Aluminum Alloy Sheet and Plate, 4.4Cu - 1.5Mg - 0.60Mn, (2024; -T3 Flat Sheet, -T3
15、51 Plate), Solution Heat Treated 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 137 Measurement of Mass of Coating on Anod
16、ically Coated Aluminum ASTM D 1193 Reagent Water ASTM D 3762 Adhesive Bonded Surface Durability of Aluminum (Wedge Test) 3. TECHNICAL REQUIREMENTS 3.1 Solutions 3.1.1 Electrolyte The electrolyte shall be an aqueous chromic acid solution. Use of surfactants and anti-misting additives shall be approve
17、d by the cognizant engineering organization. If surfactants have been approved for use and if anodized parts are to be subsequently adhesively bonded, purchaser shall notify processor of the need to perform the adhesive bond verification test of 3.4.3. 3.1.2 Dye, when used, shall be as required to p
18、roduce the specified color. 3.1.3 Sealer Unless otherwise permitted, the sealer shall be water of suitable purity and controlled pH maintained at a suitable temperature (See 8.2.10 - 8.2.12). -,-,- SAE AMS 2470M - 3 - 3.2 Preparation 3.2.1 Cleaning and Deoxidation Parts shall have clean surfaces, fr
19、ee from water break, prior to immersion in the anodizing bath. 3.2.1.1 Cleaning materials or products used for surface preparation containing iron, such as steel wool, iron oxide rouge, or steel wire, which may become embedded in the metal and accelerate subsequent corrosion, are prohibited. 3.2.2 M
20、asking Areas where anodizing is prohibited shall be masked. 3.2.3 Tight electrical contact shall be maintained during the anodic treatment, to prevent contact arcing (burning) of parts, but small irregularities of coating at points of electrical contact are acceptable. For parts which are to be anod
21、ized all over, contact locations shall be acceptable to purchaser. For parts which are not to be anodized all over, locations shall be in areas on which anodize is not required. 3.3 Procedure: 3.3.1 Anodizing The cleaned parts shall be made the anode(s) in the electrolyte contained in a suitable che
22、mical-resistant tank which may also serve as the cathode. The processing shall be adjusted to obtain the required weight and quality of the coatings. The rate of increase of the voltage shall be maintained within a range of two volts per minute of the nominal value, and the anodizing voltage shall b
23、e maintained within two volts of the nominal value. After anodizing, parts shall be rinsed thoroughly in water at ambient temperature and sealed (See 3.3.3) unless dyeing (See 3.3.2) or other treatment is specified. 3.3.2 Dyeing Parts shall be dyed, when specified, to the color required by immersing
24、 in an appropriate dye solution. The anodic coating shall not be allowed to dry before dyeing. The temperature of the solution and the time of immersion shall be as necessary to produce the specified color. Either the parts or the solution shall be agitated during immersion. Parts shall then be rins
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- SAE AMS 2470 2007
链接地址:https://www.31doc.com/p-3792790.html