1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 8503-3:2012Preparation of steel substratesbefore application of paintsand related products Surfaceroughness characteristics ofblast-cleaned steel substratesPart 3: Meth
2、od for the calibration of ISOsurface profile comparators and for thedetermination of surface profile Focusingmicroscope procedureBS EN ISO 8503-3:2012 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of . It supersedes BSEN ISO 8503-3:1995 which is withdrawn.The UK par
3、ticipation in its preparation was entrusted 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 re
4、sponsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 63470 3ICS 17.040.20; 25.220.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of
5、 theStandards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8503-3 February 2012 ICS 25.220.10 Supersedes EN ISO 8503-3:1995English Version Preparation of steel substrates before applicatio
6、n of paints and related products - 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 procedure (ISO 8503-3:2012) Prparation des subjectiles dac
7、ier avant application de peintures et de produits assimils - Caractristiques de rugosit des subjectiles dacier dcaps - Partie 3: Mthodedtalonnage des comparateurs viso-tactiles ISO et de classification dun profil de surface - Utilisation dun microscope optique (ISO 8503-3:2012) Vorbereitung von Stah
8、loberflchen vor dem Auftragen von Beschichtungsstoffen - Rauheitskenngren von gestrahlten Stahloberflchen - Teil 3: Verfahren zur Kalibrierung von ISO-Rauheitsvergleichsmustern und zur Bestimmung der Rauheit - Mikroskopverfahren (ISO 8503-3:2012) This European Standard was approved by CEN on 14 Febr
9、uary 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions 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 ob
10、tained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three 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
11、CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembour
12、g, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and 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
13、rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8503-3:2012: EBS EN ISO 8503-3:2012EN ISO 8503-3:2012 (E) 3 Foreword This document (EN ISO 8503-3:2012) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in collab
14、oration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European 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 st
15、andards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibility that some of the elements 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 I
16、SO 8503-3:1995. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
17、Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 8503-3:2012 has been approved by CEN as a EN ISO 8503-3:2012 without any mo
18、dification. BS EN ISO 8503-3:2012ISO 8503-3:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Terms and definitions . 14 Principle . 15 Apparatus 26 Test surfaces 26.1 ISO surface profile comparator . 26.2 Blast-cleaned steel substrate
19、s/replica 27 Procedure for measurement of maximum peak-to-valley height . 28 Calculation and expression of results . 39 Test report . 3Annex A (normative) Determination of backlash (play) in the microscope adjustment mechanism 5Annex B (normative) Test report for the calibration of ISO surface profi
20、le comparators and for the determination of surface profiles 6Annex C (normative) Form for recording surface profile measurements made in accordance with this part of ISO 8503 . 7Annex D (informative) Guidance notes for calibrating ISO surface profile comparators using a focusing microscope 8Annex E
21、 (informative) Guidance notes for the preparation and measurement of replicas 10Bibliography . 11BS EN ISO 8503-3:2012ISO 8503-3:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing I
22、nternational 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 committee. International organizations, governmental and non-governmental, in liaison
23、 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 accordance with the rules given in the ISO/IEC Directives, Part 2.The main task of techni
24、cal 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 approval by at least 75 % of the member bodies casting a vote.Attention is drawn t
25、o 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 8503-3 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel s
26、ubstrates before application of paints and related products.This second edition cancels and replaces the first edition (ISO 8503-3:1988), which has been editorially updated.ISO 8503 consists of the following parts, under the general title Preparation of steel substrates before application of paints
27、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 Part 2: Method for the grading of surface profile of abrasive blast-cleaned stee
28、l 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 profile comparators and for the determination of surface profile Stylus instrument
29、 procedure Part 5: Replica tape method for the determination of the surface profileiv ISO 2012 All rights reservedBS EN ISO 8503-3:2012ISO 8503-3:2012(E)IntroductionThe performance of protective coatings of paint and related products applied to steel is significantly affected by the state of the ste
30、el 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 and greases;c) the surface profile.International Standards ISO 8501 (all parts)
31、, 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 which are available for cleaning steel substrates, indicating the capabilities of each in attaining specified leve
32、ls of cleanliness.These International Standards do not contain provisions for the protective coating systems to be applied to the steel surface, nor for the surface quality provisions for specific situations even though surface quality can have a direct influence on the choice of protective coating
33、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 qualities specified are: compatible and appropriate both for the environmental condi
34、tions 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 aspects of preparation of steel substrates: ISO 8501: Visual assessment of surfac
35、e 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.The optical microscope is one of the most widely used instruments for measuring surface profile. The method c
36、an be used by any laboratory equipped with a good microscope which has a calibrated focusing mechanism meeting the requirements of 5.1. This procedure can also be used to determine the profile of a substrate after abrasive blast-cleaning either directly or from a replica.This method is based on that
37、 developed in the USA by the Steel Structures Painting Council (now the Society for Protective Coatings). lt entails averaging a series of maximum peak-to-valley measurements obtained by focusing a specified microscope, first on the highest peak and then on the lowest valley in the same field of vie
38、w, noting the distance of movement of the stage (or objective lens).This method has the disadvantage of requiring a series of tedious measurements, but good precision and agreement between laboratories and between operators can be obtained by specifying closely the field of view and depth of field o
39、f the microscope. To avoid a widespread divergence in measuring profile within and between laboratories, this method requires a significant number of measurements as well as correct calibration, proper focus movement, standardized depth of field and field diameter of the microscope necessary to meas
40、ure properly both coarse and fine profiles under a single set of conditions.ISO 8503-4 describes the procedure using a stylus instrument. ISO 8503-1 specifies the requirements for ISO surface profile comparators and ISO 8503-2 describes their use. The many abrasive blast-cleaning procedures in commo
41、n use are described in ISO 8504-2. ISO 2012 All rights reserved vBS EN ISO 8503-3:2012BS EN ISO 8503-3:2012Preparation of steel substrates before application of paints and related products Surface roughness characteristics of blast-cleaned steel substrates Part 3: Method for the calibration of ISO s
42、urface profile comparators and for the determination of surface profile Focusing microscope procedure1 ScopeThis part of ISO 8503 specifies the optical microscope and describes the procedure for calibrating ISO surface profile comparators conforming to the requirements of ISO 8503-1.This part of ISO
43、 8503 is also applicable to the determination of the surface profile, within the range hy= 20 m to 200 m, of essentially planar blast-cleaned steel. The determination can be carried out on a representative section of the blast-cleaned substrate or, if direct observation of the surface is not feasibl
44、e, on a replica of the surface (see Annex E).NOTE Where appropriate, this procedure can be used for assessing the roughness profile of other abrasive blast-cleaned substrates.An alternative procedure is described in ISO 8503-4.2 Normative referencesThe following referenced documents are indispensabl
45、e 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 8503-1, Preparation of steel substrates before application of paints and related products Surface
46、 roughness characteristics of blast-cleaned steel substrates Part 1: Specifications and definitions for ISO surface profile comparators for the assessment of abrasive blast-cleaned surfaces3 Terms and definitionsFor the purposes of this document, the definitions given in ISO 8503-1 apply.4 Principle
47、The test surface is observed over a specified field of view using a specified microscope. The microscope is adjusted, by movement of the objective lens (or the stage), to focus on the highest peak within the field of view. The distance, hy, moved by the objective lens (or the stage) in order to focu
48、s on the lowest valley within the same field of view is determined.The procedure is repeated to obtain values for a further 19 different fields of view, and calculation, of the arithmetic mean of the distance, hy, between the highest peak and lowest valley in each field of view, as the mean maximum
49、peak-to-valley height, hy, is performed.INTERNATIONAL STANDARD ISO 8503-3:2012(E) ISO 2012 All rights reserved 1BS EN ISO 8503-3:2012ISO 8503-3:2012(E)5 Apparatus5.1 Optical microscope, having a fine focus adjustment with little or no backlash (play) (see A.5).The adjustment shall give fine control of the movement of the objective lens or stage and shall be fitted with a graduated vernier scale having a scale value of not more than 1 m. The microscope shall have an objective lens with a numerical aperture of not less
