SIST EN 22063:1999

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Metallische und andere anorganische Schichten - Thermische Spritzen - Zink, Aluminium und ihre Legierungen (ISO 2063:1991 geändert)Revetements métalliques et inorganiques - Projection thermique - Zinc, aluminium et alliages de ces métaux (ISO 2063:1991 modifiée)Metallic and other inorganic coatings - Thermal spraying - Zinc, aluminium and their alloys (ISO 2063:1991)25.220.40Kovinske prevlekeMetallic coatings25.220.20Površinska obdelavaSurface treatmentICS:Ta slovenski standard je istoveten z:EN 22063:1993SIST EN 22063:1999en01-junij-1999SIST EN 22063:1999SLOVENSKI
STANDARD



SIST EN 22063:1999



SIST EN 22063:1999



SIST EN 22063:1999



INTERNATIONAL STANDARD Second edition 1991~11-01 Metallic and other inorganic coatings - Thermal spraying - Zinc, aluminium and their alloys ReviVemenfs m&alliqnes et inorganiques - Projection thermique - Zinc, aluminium et alliages de ces metaux ------ --- BP ~- -_-- Reference number ISO 2063:1991(E) SIST EN 22063:1999



ISO 2063:1991(E) Foreword ISO (the International Organization for Standardization) is a woridwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, govern- mental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inter- national Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 2063 was prepared by Technical Committee ISO/TC ‘fO7, Metallic and other inorganic coatings, Sub-Committee SC 5, Metal spraying. This second edition cancels and replaces the first edition (ISO 2063:1973), of which it constitutes a technical revision. Annex A forms an integral part of this International Standard. Annex B is for information only. 0 ISO 1991 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN 22063:1999



ISO 2063:1991(E) lntroduction Thermal sprayed metallic coatings are produced by projecting the coating metal heated to its molten state, in a stream of gas, onto the surface to be coated. It is essential that the purchaser specifies the coating metal or alloy and the thickness of the coating required: merely to ask for thermal metal spraying to be carried out in accordance with ISO 2063, without this in- formation, is insufficient. lt is essential that the design of the article enables it to be coated properly. . . . Ill SIST EN 22063:1999



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INTERNATIONAL STANDARD ISO 2063:1991(E) Metallic and other inorganic coatings - Thermal spraying - Zinc, aluminium and their alloys 1 Scope This international Standard deals with characteristic properties and gives test methods for coatings ob- tained by the spraying of zinc and aluminium and their alloys for the general purpose of corrosion protection. lt gives firstly the definition, classification and sym- bols for these coatings in relation to their thickness. lt then deals with the preparation of surfaces, appli- cation of coatings and their characteristic proper- ties: namely, thickness, appearance and adhesion. Finally it gives test methods for checking these properties. lt does not deal with repairs to damaged metal areas. This International Standard applies to thermal- sprayed metallic coatings for the protection of iron and steel against corrosion by applying zinc or alu- minium or their alloys to the surface to be protected. lt does not, in general, apply to coatings obtained by the application of metals other than zinc or alu- minium, although for other metals some of the pro- visions are valid and may be adopted by agreement between the interested Parties. 2 Normative references The following Standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publi- cation, the editions indicated were valid. All stan- dards are subject to revision, and Parties to agreements based on this International Standard are encouraged to investigate the possibility of ap- plying the most recent editions of the Standards in- dicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO/R 115: 1968, Classification and composition of unalloyed aluminium ingots for remelfing. ISO 209-1: 1989, Wrought aluminium and aluminium alloys - Chemical composition and forms of prod- ucts - Part 1: Chemical composition. ISO 752:1981, Zinc ingots. ISO 1463:1982, Metallic and Oxide coatings - Measurement of coating thickness - Microscopical method. ISO 20643980, Metallic and other non-organic coatings - Definitions and conventions concerning the measurement of thickness. ISO 2178:1982, Non-magnetic coatings on magnetic Substrates - Measurement of coating thickness - Magnetit method. ISO 8501-1:1988, Reparation of steel Substrates be- fore application of paints and related producfs - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel substrates and of steel Substrates after Overall removal of previous coatings. 3 Definitions For the purposes of this International Standard, the definitions given in ISO 2064 and in particular the following, apply. 3.1 significant surface: The patt of the article cov- ered or to be covered by the coating and for which the coating is essential for serviceability and/or ap- pearance. 3.2 minimum local thickness: The lowest value of the local thickness found on the significant surface of a Single article. 1 SIST EN 22063:1999



ISO 2063:1991 (E) 4 Manner of specifylng requirements When specifying the coating of articles by thermal spraying in accordance with this International Stan- dard, the purchaser shall state, in addition to the number of the International Standard, the significant surface of the metal coating and its thickness in ac- cordante with the Symbols indicated in table 1. 5 Classification The zinc, aluminium or Zn-Al alloy coatings con- sidered in this International Standard are classified in a scale according to their thickness, in conformity 6 Manufacture 6.1 Preparation of surfaces to be eoated by thermal sprayingl’ The surface shall be thoroughly cleaned and roughened with a suitable abrasive grit. Blasting shall be continued untii the surface has a white me- tallic appearance and uniform texture. Immediately before spraying, the surface shall be dry and free from dust, grease, scale, rust and other with the indications-in table 1. contaminants including soluble Safts. Table 1 - Classification of sprayed metal coatings This classification gives a series of thickness values applicable to zinc, aluminiuni and In-Al alloy coatings. lntermediate values may be specified by agreement between the Parties concerned. The Symbol corresponding to each coating shall be composed of the Symbol for the metal used (Zn = zinc, Al = aluminium) followed by the minimum local thickness. 1) Minimum local thlckness U.S. milli-inches ;;;;;5 i--~~ ; 6 _-_-~-----~- Micrometres*) 503) 150 250 100 200 3004) - 1) To specify an alloy coating, the Chemical Symbol corresponding to each element should be followed by the alloy content in mass percentage of this element; e.g. a coating of 120 Lim consisting of 85 90 zinc/l5 o/O aluminium alloy shall be specified as: Zn 85 Al 15)120, the parentheses being essential for the identification of the alloy terms. If the coating is obtained using an alloy whose Symbol appears in another International Standard, that symbol shall be used: e.g. 150 iirn of 95 O/o Al/5 O/o Mg alloy shall be specified as: (ISO 209: Al Mg5)150. 2) In conformity with ISO 2064. 3) Thicknesses requiring an agreement between the interested Parties, notably on the spr-aying technique used to achieve uniformity of thickness, the use of paints or sealers and the test methods. 4) By special agreement between the interested Parties, greater minimum thicknesses may be used if the coating obtained remains in conformity with this International Standard. 1) This subclause specifies the most important elements of surface preparation before thermal spraying of zinc, aluminium and their alloys. For more detailed specifications, refer to ISO 8504-2, Preparation of steel substrates before application of paint and related products - Surface preparatiori methods - Part 2: Abrasive blast-cleaning (to be published). 2 SIST EN 22063:1999



ISO 2063:1991 (E) In all Gases, the roughness of the surface shall be verified by comparison with a reference surface having similar properties to the workpiece, prepared according to specifications agreed between the in- terested Parties. Unless othetwise specified, one of the following abrasives shall be used in the preparation of the surface: - hematitic chilled cast iron grit; - aluminium Oxide grit. In certain cases in some countries*), other abrasives may be used, by agreement between the interested Parties, but with special precautions to achieve suf- ficient roughness to ensure the adhesion of the sprayed metal. The grit size of the abrasive is generally between 0,5 mm and 1,5 mm. The abrasive used, whatever its type, shall be clean and dry and, in particular, free from soluble salts. In the case of abrasive blasting using compressed air, the air shall be sufficiently clean and dry to prevent contamination of the abrasive or the surface to be sprayed with metal. Furthermore, it is desirable to check the cleanliness of the gritblasted surface using “grade Sa 3” ac- cording to ISO 8501-1. 6.2 Coating metal The coating metal shall comply with the following conditions: - Zinc: zinc having a composition in accordance with type Zn 99,99 of ISO 752. - Aluminium: aluminium of a quality at least equal to that of type Al 99,5 (1050A) of ISO 209-1. - Zinc alloys: alloy basis shall be Zn 99,99 zinc (in accordance with ISO 752) and Al 99,7 aluminium [in accordance with ISO 209-1 (Al 1070)]. The al- loy composition shall be indicated as in note 1) of table 1. The tolerante for alloy metals shall be + 1 % of the nominal percentage content unless - otherwise specified. For example, zinc- aluminium alloys from 87 % zinc113 % alu- minium to 65 % zinc/35 % aluminium tan be used. The preferred alloy is 85 % zinc/15 % alu- minium. Appropriate Symbols shall be used. - Aluminium alloy: aluminium alloy with 5 % magnesium, Al Mg5 in accordance with ISO 209-1 tan be used. 6.3 Thermal spraying The thermal spraying shall be carried out after the surface has been prepared by abrasive blasting, within a period that allows the metal to be sprayed onto a prepared surface which is still clean, dry and not visibly oxidized. This time allowed shall be as short as possible and shall be less than 4 h depe nding on IOC al conditi ons. Spraying shall not be carried out under conditions leading to condensation on the surface to be sprayed and the surface shall be maintained at a temperature above the dew-Point. Thermal spraying shall be performed when the steel temperature is at least 3 “C above the dew-Point to avoid blistering. If a deterioration of the surface to be coated is ob- served, the preparation treatment shall be repeated on the surface to be coated (see 6.1). 6.4 Sealing or painting 6.4.1 The purpose of metallic coa
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