欢迎来到麦多课文档分享! | 帮助中心 海量文档,免费浏览,给你所需,享你所想!
麦多课文档分享
全部分类
  • 标准规范>
  • 教学课件>
  • 考试资料>
  • 办公文档>
  • 学术论文>
  • 行业资料>
  • 易语言源码>
  • ImageVerifierCode 换一换
    首页 麦多课文档分享 > 资源分类 > PDF文档下载
    分享到微信 分享到微博 分享到QQ空间

    AECMA PREN 3769-1996 Aerospace Series Electrolytic Polishing of Corrosion Resistant Steels and Heat Resisting Alloys Edition 1《航空航天系列电解抛光防腐蚀和耐热合金钢.第1版》.pdf

    • 资源ID:420713       资源大小:139.35KB        全文页数:6页
    • 资源格式: PDF        下载积分:5000积分
    快捷下载 游客一键下载
    账号登录下载
    微信登录下载
    二维码
    微信扫一扫登录
    下载资源需要5000积分(如需开发票,请勿充值!)
    邮箱/手机:
    温馨提示:
    如需开发票,请勿充值!快捷下载时,用户名和密码都是您填写的邮箱或者手机号,方便查询和重复下载(系统自动生成)。
    如需开发票,请勿充值!如填写123,账号就是123,密码也是123。
    支付方式: 支付宝扫码支付    微信扫码支付   
    验证码:   换一换

    加入VIP,交流精品资源
     
    账号:
    密码:
    验证码:   换一换
      忘记密码?
        
    友情提示
    2、PDF文件下载后,可能会被浏览器默认打开,此种情况可以点击浏览器菜单,保存网页到桌面,就可以正常下载了。
    3、本站不支持迅雷下载,请使用电脑自带的IE浏览器,或者360浏览器、谷歌浏览器下载即可。
    4、本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰。
    5、试题试卷类文档,如果标题没有明确说明有答案则都视为没有答案,请知晓。

    AECMA PREN 3769-1996 Aerospace Series Electrolytic Polishing of Corrosion Resistant Steels and Heat Resisting Alloys Edition 1《航空航天系列电解抛光防腐蚀和耐热合金钢.第1版》.pdf

    1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 1996-01-31 prEN 3769 Edition 1 January 1996 The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 92138 ISSY - LES - MOULINEAUX CEDEX - FRANCE PUBLISH

    2、ED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (32) 2 775 81 10 - Fax. (32) 2 775 81 11 ICs : 49.040.40 ENGLISH VERSION Aerospace series Electrolytic polishing of corrosion resistant steels and heat resisting alloys Srie arospatiale Luft- und R

    3、aumfahrt Polissage lectrolytique Elektrolytisches Polieren des aciers rsistant la corrosion et des alliages rsistant chaud von korrosionsbestndigen Sthlen und hochwarmfesten Legierungen This Aerospace series“ Standard has been drawn up under the responsibility of AECMA (The European Association of A

    4、erospace Industries). It is published on yellow paper in three equivalent versions (English, French, German). It will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Copyright Association Europeene des Constructeurs de Materiel Aerospatial P

    5、rovided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STD*AECMA PREN 37b9-ENGL 377b O 3032333 O032777 702 O Page 3 prEN 3769 : 1996 1 Scope This standard specifies the electrolytic polishing of corrosion resistant steels and heat re

    6、sisting alloys used in aerospace constructions. It shall be applicable whenever referenced. 2 Purpose of process To improve the surface condition and/or increase the corrosion resistance by eliminating any metallic surface contamination. 3 Normative references This European Standard incorporates by

    7、dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standar

    8、d only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. IS0 9227 Corrosion tests in artificial atmospheres - Salt spray tests EN 2000 Aerospace series - Quality assurance - EN aerospace products - Approval of the qual

    9、ity system of manufacturers EN 251 6 Aerospace series - Passivation of corrosion resistant steels and decontamination of nickel base alloys 4 Definitions For the purposes of this standard, the following definitions apply. 4.1 material), treated at the same time in the same bath. Batch : Unless other

    10、wise specified, it shall comprise parts of the same nature (form, size, 4.2 Pre-production parts : Parts representing future production. 5 Information for the processor - Designation, see 11 ; - number of the material standard and metallurgical conditon of the latter ; - areas to be processed ; - pe

    11、rmitted electrical contact points or areas where these are prohibited. 1) Published as AECMA Standard at the date of publication of this standard Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or network

    12、ing permitted without license from IHS-,-,-STD-AECMA PREN 37b7-ENGL L77b W LOL23LL 0012778 bq7 Page 4 prEN 3769 : 1996 6 Treatment The parts shall be : - degreased and deoxidized ; - treated in a solution. Examples of appropriate solutions are described in annex A ; - rinsed and dried. To improve co

    13、rrosion resistance, a passivation in accordance with EN 2516 may be carried out. 7 Required characteristics 7.1 Appearance The surface shall be smooth and glossy, free from corrosion Pittings. 7.2 Surface cleanness and corrosion resistance The surface of the parts shall have no metallic contaminatio

    14、n and no signs of corrosion even after 24 h of exposure to salt spray. 7.3 They shall be in accordance with the indications in the design documents. Dimensions and surface roughness after processing 7.4 Intergranular corrosion The surface of the parts shall have no such corrosion. 8 Inspection and t

    15、est methods 8.1 Approval of the process 8.1 .I Appearance Visual inspection 8.1.2 The salt spray test shall be made in accordance with IS0 9227 in a 5 % solution of sodium chloride. Surface cleanness and corrosion resistance 8.1.3 They shall be verified by dimensional measurements carried out before

    16、 and after processing. Dimensions and surface roughness after processing 8.1.4 Intergranular corrosion Metallographic examination shall be made on a cross-section at a magnification of min. 300 times. 8.2 Acceptance of parts 8.2.1 Appearance See 8.1 .I. Copyright Association Europeene des Constructe

    17、urs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-I STD-AECMA PREN 37b7-ENGL L77b LOL23LL 0032799 585 Page 5 prEN 3769 : 1996 8.2.2 See 8.1.2. Surface cleanness and corrosion resistance 8.2.3 Dimensi

    18、onal inspection See 8.1.3. 8.2.4 Intergranular corrosion See 8.1.4. 9 Quality assurance 9.1 Approval of the processor See EN 2000. 9.2 Process approval The processor shall carry out : - electrolytic polishing on pre-production parts and/or test pieces, determined by agreement between the purchaser a

    19、nd processor ; - tests specified in this standard, unless otherwise agreed between the purchaser and processor. Other specific tests may be carried out at the purchasers request, for example creep, impact strength, etc When the test results have been accepted as satisfactory by the purchaser, he sha

    20、ll give his written approval to start production. The procedure shall not be changed without previous agreement from the purchaser. 9.3 Acceptance The frequency and nature of the inspection of parts and test pieces shall be defined in the design documents or determined by agreement between the purch

    21、aser and processor. The appearance inspection (see 8.2.1) shall be carried out on the whole batch unless otherwise specified. By no means it shall be less than 10 % of the batch with a minimum of 20 parts. In case of accompanying test pieces, the metallographic examination (see 8.2.4) shall be carri

    22、ed out at a rate of one test per batch. The frequency of the other tests (see 8.2.2 and 8.2.3) shall be determined by agreement between the purchaser and processor. 9.4 Re-treatment It is permitted if the parts are not within the specified dimensions or if the surface roughness is not achieved. Copy

    23、right Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-io The locally applicable regulations and laws shall be observed. Health, safety and environmental aspects

    24、11 Designation EXAMPLE : Number of this standard ” Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,- STD-AECflA PREN 37bq-ENGL 177b = LO12311 O013001 83

    25、1 Page 7 prEN 3769 : 1996 V A/dm2 Annex A (informative) Electrolytic polishing 15 to 30 12 to 30 11 to 15 100 to 200 20 to 40 60 to 75 Composition of the solution and use conditions Phosphoric acid (d = 1,701 Chromic acid anhydride I Suiphuric acid (d = 1,841 Operating temperature Voltage Current de

    26、nsity I Units I no1 1 200I 100 260 f 30 Solution n02 I n03 130 I20 330 i 25 OC 70 to 90 60 to 75 35 to 40 The solutions shall be controlled to maintain product concentrations in the given range. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-


    注意事项

    本文(AECMA PREN 3769-1996 Aerospace Series Electrolytic Polishing of Corrosion Resistant Steels and Heat Resisting Alloys Edition 1《航空航天系列电解抛光防腐蚀和耐热合金钢.第1版》.pdf)为本站会员(bonesoil321)主动上传,麦多课文档分享仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知麦多课文档分享(点击联系客服),我们立即给予删除!




    关于我们 - 网站声明 - 网站地图 - 资源地图 - 友情链接 - 网站客服 - 联系我们

    copyright@ 2008-2019 麦多课文库(www.mydoc123.com)网站版权所有
    备案/许可证编号:苏ICP备17064731号-1 

    收起
    展开