ISO INTERNATIONAL STANDARD 27831-2 First edition 2008-10-15 Metallic and other inorganic coatings - Cleaning and preparation of metal surfaces - Part 2: Non-ferrous metals and alloys Revetements métalliques et autres revetements inorganiques - Nettoyage et preparation des surfaces métalliques. Partie 2: Métaux non ferreux et alliages Reference number ISO 27831-2:2008(E) Downloaded:200% Single-user lice I networking prohibited. @ ISO 2008 ISO 27831-2:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF fle can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ?ISO2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyright@iso.org Web www.iso.org Published in Switzerland Licensed by SAC to WIMP Downloaded: 2008-12-30 Single-user licence only, copying and networking prohibited = @ IS0 2008 - All rights reserved ISO 27831-2:2008(E) Contents Page Foreword. vii Introduction . vili 1 Scope 2 Normative references .. 3 Terms and definitions.. 3 4 Essential information to be supplied by the purchaser to the processor . 3 5 Requirements.. 6 Standard cleaning methods... 7 Non-corrosion-resisting steels, cast irons and pure irons .. 8 Corrosion-resisting and heat-resisting steels.... 6 9 Pretreatment of metals prior to powder coating 10 Cleaning and preparation processes.. 11 Aluminium and aluminium alloys... 6 11.1 General. 11.2 General degreasing and cleaning .. 11.3 Removal of corrosion products . 11.4 Preparation prior to anodizing .. 11.5 Preparation prior to oxide removal treatment (process O) or filming treatment 11.6 Preparation prior to adhesive bonding of unanodized items 11.7 Preparation prior to electroplating.... 11.8 Preparation prior to autocatalytic nickel plating .. 11.9 Preparation prior to conversion coating ... 11.10 Preparation prior to metal spraying........ 11.11 Preparation prior to vitreous enamelling ... 11.11.1 Sheet, extrusions and items made from casting alloys... 11.11.2 Other castings.. 11.12 Preparation prior to supplementary treatments on physically vapour deposited aluminium... 12 Copper and copper alloys.... 12.1 General degreasing and cleaning . 8 12.2 Preparation prior to electroplating... 12.3 Preparation prior to autocatalytic nickel plating .... 9 12.4 Preparation prior to hot tinning (TRI process) .... 12.5 Preparation prior to vitreous tinning .. 10 13 Nickei aiioys .. 10 13.1 General degreasing and cleaning .. 13.2 Preparation prior to electroplating..... 10 13.3 Preparation prior to autocatalytic deposition .... 11 13.4 Preparation prior to vitreous enamelling .... 11 14 Titanium and titanium alloys . 11 14.1 General degreasing and cleaning ... 11 14.2 Preparation prior to electroplating.... 12 14.3 Preparation prior to autocatalytic nickel plating .... 12 15 Magnesium alloys... 12 15.1 General degreasing and cleaning prior to electroplating and conversion coating ... 12 Licensed by SAC to WIMP Downloaded:2008-12-30 Single-user licence only, copying and networking prohibited. Is 2008 -All rights reserved ili

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