BS-EN-ISO-11127-2-1998 BS-7079-F12-1994.pdf

BRITISH STANDARD CONFIRMED DECEMBER 1998 BS EN ISO 11127-2:1998 BS 7079-F12: 1994 Incorporating Amendment No.1 to BS 7079-F12:1994 (which it renumbers as BS EN ISO 11127-2:1998 Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 2: Determination of particle size distribution The European Standard EN ISO 11127-2:1997 has the status of a British Standard ICS 87.020 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11127-2:1998 This British Standard, having been prepared under the direction of the Surface Treatments and Coatings Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 March 1994 © BSI 04-1999 The following BSI references relate to the work on this standard: Committee reference STC/21 Draft for comment 92/50248 DC ISBN 0 580 23057 0 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Surface Treatments and Coatings Standards Policy Committee (STC/-) to Technical Committee STC/21, upon which the following bodies were represented: Association of Consulting Engineers British Chemical Engineering Contractors Association British Coatings Federation Ltd. British Constructional Steelwork Association Ltd. British Grit Association British Railways Board British Steel Industry Department of Transport Electricity Association Institute of Corrosion National Federation of Painting and Decorating Contractors Oil and Colour Chemists Association Paint Research Association Royal Society of Chemistry Amendments issued since publication Amd. No.DateComments 9847February 1998Renumbers BS 7079-F12:1994 as BS EN ISO 11127-2:1998, with addition of EN ISO title page, foreword and Annex ZA, and changes to national foreword (Indicated by a sidelines in the margin) Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11127-2:1998 © BSI 04-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 Text of EN ISO 11127-23 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN ISO 11127-2:1998 ii © BSI 04-1999 National foreword This British Standard has been prepared by Technical Committee STI/21 and is the English language version of EN ISO 11127-2:1997 Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 2: Determination of particle size distribution, published by the European Committee for Standardization (CEN). It is identical with ISO 11127-2:1993, published by the International Organization for Standardization (ISO). International Standard ISO 11127-2 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel substrates before application of paints and related products. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. The Technical Committee has reviewed the provisions of ISO 565:1990, to which normative reference is made in the text, and has decided that they are acceptable for use in conjunction with this standard. ISO 565:1990 is related to BS 410:1986. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN ISO 11127-2 July 1997 ICS 87.020 Descriptors: Paints, varnishes, substrates, steel products, blast-cleaning, abrasives, non-metallic abrasives, tests, size classification, grain size analysis, sieve analysis English version Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 2: Determination of particle size distribution (ISO 11127-2:1993) Préparation des subjectiles dacier avant application de peintures et de produits assimilés Méthodes dessai pour abrasifs non métalliques destinés à la préparation par projection Partie 2: Analyse granulométrique (ISO 11127-2:1993) Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen Prüfverfahren für nichtmetallische Strahlmittel Teil 2: Bestimmung der Korngrößenverteilung (ISO 11127-2:1993) This European Standard was approved by CEN on 1997-06-16. 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 obtained on application to the Central Secretariat 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comité Européen de Normalisation Europäisches Komitee für Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels © 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members Ref. No. EN ISO 11127-2:1997 E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11127-2:1997 2 © BSI 04-1999 Foreword The text of the International Standard from Technical Committee ISO/TC 35, Paints and varnishes, of the International Organization for Standardization (ISO) has been taken over as a European Standard by 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 January 1998, and conflicting national standards shall be withdrawn at the latest by January 1998. According to CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword2 1Scope3 2Normative references3 3Apparatus3 4Sampling3 5Procedure3 6Expression of results4 7Test report4 Annex A (informative) International Standards for non-metallic blast-cleaning abrasives5 Annex ZA (normative) Normative references to international publications with their relevant European publications6 Table 1 List of sieve mesh apertures to be used (from ISO 565:1990; R20/3 and R20 sizes)3 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11127-2:1997 © BSI 04-19993 1 Scope This is one of a number of parts of ISO 11127 dealing with the sampling and testing of non-metallic abrasives for blast-cleaning. The types of non-metallic abrasive and requirements on each are contained in the various parts of ISO 11126. The ISO 11126 and ISO 11127 series have been drafted as a coherent set of International Standards on non-metallic blast-cleaning abrasives. Information on all parts of both series is given in Annex A. This part of ISO 11127 specifies a method for the determination of the particle size distribution of non-metallic blast-cleaning abrasives by sieving. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 11127. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 11127 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 565:1990, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings. ISO 11127-1:1993, Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 1: Sampling. 3 Apparatus Ordinary laboratory apparatus and glassware, together with the following: 3.1 Test sieves, circular, with a height of between 25 mm and 50 mm and a sieving area approximately 200 mm in diameter, made of woven metal wire cloth. The frame of the test sieves shall be of metal. The range of nominal mesh apertures depends on the specification for the product to be tested and shall comply with the requirements of Table 2 in ISO 565:1990 as indicated in Table 1. The sieves shall have square openings. A lid and a residue pan shall also be provided. NOTE 1Smaller-diameter sieves may not produce accurate separation of the sample. Sieves shall be regularly checked for calibration and freedom from retained abrasive. Table 1 List of sieve mesh apertures to be used (from ISO 565:1990; R20/3 and R20 sizes) 3.2 Rotating sieve machine, for agitating the sieves with the sample at a frequency of rotation of approximately 300 min1 and provided with a timer for time periods of up to 30 min in 1 min intervals. NOTE 2Other sieve machines may be used provided the same results are obtained. 3.3 Balance, capable of weighing to an accuracy of 0,1 g. 4 Sampling Take a representative sample of the product to be tested, as described in ISO 11127-1. 5 Procedure Carry out the determination in duplicate. 5.1 Weigh out, to the nearest 0,1 g, a test portion of approximately 300 g of the sample (m0). 5.2 Use all the test sieves listed against the grade under test as given in the grade and screening specification table in the appropriate part of ISO 11126 (see Annex A) or, in the case of materials not covered by ISO 11126, as otherwise agreed between the interested parties. 5.3 Arrange the test sieves (3.1) with the largest-aperture sieve on the top and progress to the smallest aperture at the bottom, with a pan to catch any abrasive that falls through the finest sieve. 5.4 Place the test portion in the top sieve. 5.5 Place a cover over the top sieve. 5.6 Place the stack of sieves with the test portion in the rotating sieve machine (3.2) and operate the sieve machine for 15 min. 5.7 Carefully remove the top sieve from the stack and transfer any retained abrasive on to the balance pan. Brush the sieve clean of any trapped abrasive and add this to the balance pan. Weigh to the nearest 0,1 g and record this result (m1). Repeat for all the sieves in the stack, including the retaining pan. mmmmmmmm 0,036 0,040 0,045 0,050 0,056 0,063 0,071 0,080 0,090 0,100 0,112 0,125 0,140 0,160 00180 0,200 0,224 0,250 0,280 0,315 0,355 0,400 0,450 0,500 0,560 0,630 0,710 0,800 0,900 1,00 1,12 1,25 1,40 1,60 1,80 2,00 2,24 2,50 2,80 3,15 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11127-2:1997 4 © BSI 04-1999 6 Expression of results For each test sieve used, and for the residue in the pan, calculate the percentage of material retained R, expressed as a percentage by mass, using the equation where If the duplicate determinations differ by more than 10 % (relative to the higher result), repeat the procedure described in clause 5. Calculate the mean of two valid determinations and report the result to the nearest 1 %. 7 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested, in accordance with the appropriate part of ISO 11126 (see Annex A), if applicable; b) a reference to this part of ISO 11127 (ISO 11127-2); c) the result of the test; d) any deviation from the test method specified; e) the date of the test; f) the name of the person who carried out the test. m0is the mass, in grams, of the test portion; m1is the mass, in grams, of the residue on the sieve (or in the pan). R m1 m0 - - × 100= Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11127-2:1997 © BSI 04-19995 Annex A (informative) International Standards for non-metallic blast-cleaning abrasives Requirements and test methods for non-metallic blast-cleaning abrasives are contained in ISO 11126 and ISO 11127 respectively. ISO 11126 will consist of the following parts under the general title: Preparation of steel substrates before application of paints and related products Specifications for non-metallic blast-cleaning abrasives Part 1: General introduction and classification; Part 2: Silica sand; Part 3: Copper refinery slag; Part 4: Coal furnace slag; Part 5: Nickel refinery slag; Part 6: Iron furnace slag; Part 7: Fused aluminium oxide; Part 8: Olivine sand; Part 9: Staurolite; Part 10: Garnet; ISO 11127 will consist of the following parts, under the general title: Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 1: Sampling; Part 2: Determination of particle size distribution; Part 3: Determination of apparent density; Part 4: Assessment of hardness by a glass slide test; Part 5: Determination of moisture; Part 6: Determination of water-soluble contaminants by conductivity measurement; Part 7: Determination of water-soluble chlorides; Part 8: Determination of abrasive mechanical properties; Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 09:04:03 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 11127-2:1997 6 ©