1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8503-2:2012Preparation of steel substratesbefore application of paintsand related products Surfaceroughness characteristics ofblast-cleaned steel substratesPart 2: Meth
2、od for the grading of surfaceprofile of abrasive blast-cleaned steel Comparator procedureBS EN ISO 8503-2:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of . It supersedes BSEN ISO 8503-2:1995 which is withdrawn.The UK participation in its preparation was entrus
3、ted to TechnicalCommittee STI/21, Surface preparation of steel.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. Th
4、e British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 63469 7ICS 17.040.20; 25.220.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Commit
5、tee on 31 March 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8503-2 February 2012 ICS 25.220.10 Supersedes EN ISO 8503-2:1995English Version Preparation of steel substrates before application of paints and related products - Surfa
6、ce roughness characteristics of blast-cleaned steel substrates - Part 2: Method for the grading of surface profile of abrasive blast-cleaned steel - Comparator procedure (ISO 8503-2:2012) Prparation des subjectiles dacier avant application de peintures et de produits assimils - Caractristiques de ru
7、gosit des subjectiles dacier dcaps - Partie 2: Mthodede classification dun profil de surface en acier dcape par projection dabrasif - Utilisation des comparateurs viso-tactiles (ISO 8503-2:2012) Vorbereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen - Rauheitskenngren von gestra
8、hlten Stahloberflchen - Teil 2: Verfahren zur Prfung der Rauheit von gestrahltem Stahl; Vergleichsmusterverfahren (ISO 8503-2:2012) This European Standard was approved by CEN on 14 February 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions
9、 for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in t
10、hree official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards
11、bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey an
12、d United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 85
13、03-2:2012: EBS EN ISO 8503-2:2012EN ISO 8503-2:2012 (E) 3 Foreword This document (EN ISO 8503-2:2012) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This Eu
14、ropean Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the ele
15、ments of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 8503-2:1995. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the foll
16、owing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slov
17、akia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8503-2:2012 has been approved by CEN as a EN ISO 8503-2:2012 without any modification. BS EN ISO 8503-2:2012ISO 8503-2:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntrodu
18、ction v1 Scope 12 Normative references . 13 Terms and definitions . 14 Principle . 25 Apparatus 26 Maintenance and re-calibration of comparators . 27 Procedure 28 Test report . 3BS EN ISO 8503-2:2012ISO 8503-2:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide fed
19、eration of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that comm
20、ittee. International organizations, governmental 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.International Standards are drafted in accordan
21、ce with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires a
22、pproval by at least 75 % of the member bodies casting a vote.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 8503-2 was prepared by Technical Comm
23、ittee ISO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel substrates before application of paints and related products.This second edition cancels and replaces the first edition (ISO 8503-2:1988), which has been technically revised.ISO 8503 consists of the following parts, unde
24、r the general title Preparation of steel substrates before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates: Part 1: Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfaces
25、Part 2: Method for the grading of surface profile of abrasive blast-cleaned steel Comparator procedure Part 3: Method for the calibration of ISO surface profile comparators and for the determination of surface profile Focusing microscope procedure Part 4: Method for the calibration of ISO surface pr
26、ofile comparators and for the determination of surface profile Stylus instrument procedure Part 5: Replica tape method for the determination of the surface profileiv ISO 2012 All rights reservedBS EN ISO 8503-2:2012ISO 8503-2:2012(E)IntroductionThe performance of protective coatings of paint and rel
27、ated products applied to steel is significantly affected by the state of the steel surface immediately prior to painting. The principal factors that are known to influence this performance are:a) the presence of rust and mill scale;b) the presence of surface contaminants, including salts, dust, oils
28、 and greases;c) the surface profile.International Standards ISO 8501 (all parts), ISO 8502 (all parts) and ISO 8503 (all parts) have been prepared to provide methods of assessing these factors, while ISO 8504 (all parts) provides guidance on the preparation methods that are available for cleaning st
29、eel substrates, indicating the capabilities of each in attaining specified levels of cleanliness.These International Standards do not contain provisions for the protective coating systems to be applied to the steel surface or for the surface quality provisions for specific situations, even though su
30、rface quality can have a direct influence on the choice of protective coating to be applied and on its performance. Such provisions are found in other documents such as national standards and codes of practice. It is necessary for the users of these International Standards to ensure that the qualiti
31、es specified are: compatible and appropriate both for the environmental conditions to which the steel is exposed and for the protective coating system to be used; within the capability of the cleaning procedure specified.The four International Standards referred to above deal with the following aspe
32、cts of preparation of steel substrates: ISO 8501: Visual assessment of surface cleanliness; ISO 8502: Tests for the assessment of surface cleanliness; ISO 8503: Surface roughness characteristics of blast-cleaned steel substrates; ISO 8504: Surface preparation methods.Irrespective of the procedures a
33、nd the type of abrasive used for the preparation of steel substrates, the surface after blast-cleaning consists of random irregularities with peaks and valleys that are not easily characterized. Consequently, it was concluded that, because of this random nature, no method is capable of giving a prec
34、ise value for the profile. Thus, it is intended that the profile be identified as either dimpled (where shot abrasives are used) or angular (where grit abrasives are used) and that it be graded as “fine”, “medium” or “coarse”, each grade being defined by the limits specified in ISO 8503-1. These sur
35、face characteristics are considered to give sufficient distinguishing features for most painting requirements.Particular attention, however, is drawn to the fact that the grades “fine”, “medium” and “coarse” represent different ranges in terms of roughness parameters, dependent upon whether these gr
36、ades are applied to shot abrasive or grit abrasive blast-cleaned surfaces. In consequence, the effect produced on a given coating by a given grade “fine”, “medium” or “coarse” is determined not only by the specific surface character but also by the specific roughness value Ry5or hybelonging to that
37、grade. Where surface profile is particularly important, both the grade of the surface profile (“fine”, “medium” or “coarse”) and the type of abrasive which is to be used are to be specified. ISO 2012 All rights reserved vBS EN ISO 8503-2:2012BS EN ISO 8503-2:2012Preparation of steel substrates befor
38、e application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates Part 2: Method for the grading of surface profile of abrasive blast-cleaned steel Comparator procedure1 ScopeThis part of ISO 8503 describes a visual and tactile method for assessing the
39、grade of the profile which is produced by one of the abrasive blast-cleaning procedures described in ISO 8504-2.The method uses ISO surface profile comparators for assessing, on site, the roughness of surfaces before the application of paint or other protective treatments.NOTE Where appropriate, ISO
40、 surface profile comparators can be used for assessing the roughness profile of other abrasive blast-cleaned substrates and, in addition, their use is not restricted solely to surfaces that are to be painted.The method is applicable to steel surfaces which have been blast-cleaned by use of either sh
41、ot abrasives or grit abrasives, but is only applicable to grades Sa 2 and Sa 3 of ISO 8501-1 where the entire surface under test shows an overall blast-cleaned appearance.lt is applicable to surfaces which have been cleaned with either metallic or non-metallic abrasives.2 Normative referencesThe fol
42、lowing referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 8501-1, Preparation of steel substrates before applic
43、ation of paints and related products 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 coatingsISO 8503-1:2012, Preparation of steel substrates before application of paints and re
44、lated products Surface roughness characteristics of blast-cleaned steel substrates Part 1: Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfacesISO 8503-3, Preparation of steel substrates before application of paints and related prod
45、ucts Surface roughness characteristics of blast-cleaned steel substrates Part 3: Method for the calibration of ISO surface profile comparators and for the determination of surface profile Focusing microscope procedureISO 8503-4, Preparation of steel substrates before application of paints and relate
46、d products Surface roughness characteristics of blast-cleaned steel substrates Part 4: Method for the calibration of ISO surface profile comparators and for the determination of surface profile Stylus instrument procedureISO 8504-2, Preparation of steel substrates before application of paints and re
47、lated products Surface preparation methods Part 2: Abrasive blast-cleaning3 Terms and definitionsFor the purposes of this document, the definitions given in ISO 8503-1 apply.INTERNATIONAL STANDARD ISO 8503-2:2012(E) ISO 2012 All rights reserved 1BS EN ISO 8503-2:2012ISO 8503-2:2012(E)4 PrincipleThe
48、surface profile of the test surface is compared by visual or tactile means with the profile of each of the segments of a calibrated ISO surface profile comparator to identify the two segments between the profiles of which the test surface lies. The results are converted to the appropriate grading: “
49、fine”, “medium” or “coarse”.5 Apparatus5.1 ISO surface profile comparator, calibrated, conforming to the requirements of ISO 8503-1 or other comparator design and configuration with four segments that conform to the profiles specified in ISO 8503-1.NOTE In ISO 8503-1, two comparators are specified: one with surface profiles corresponding to surfaces which have been blast-cleaned using grit abrasives (reference comparator G) and one with surface profiles corresponding to surfaces which have been blas
