BS EN ISO 11125-5-1994 Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Determination of percent.pdf

1、BRITISH STANDARDBS EN ISO 11125-5:1997BS 7079-E10: 1994Incorporating Amendment No. 1 to BS 7079-E10:1994 (which it renumbers as BS EN ISO 11125-5:1997)Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 5: Determin

2、ation of percentage defective particles and of microstructureThe European Standard EN ISO 11125-5:1997 has the status of a British StandardICS 25.220.10; 87.020BS EN ISO 11125-5:1997This British Standard, having been prepared under the direction of the Surface Treatments and Coatings Standards Polic

3、y Committee, was published under the authority of the Standards Board and comes into effect on 15 March 1994 BSI 04-2000The following BSI references relate to the work on this standard:Committee reference STC/21Draft for comment 92/50238 DCISBN 0 580 23062 7Committees responsible for this British St

4、andardThe 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 EngineersBritish Chemical Engineering Contractors Associati

5、onBritish Coatings Federation Ltd.British Constructional Steelwork Association Ltd.British Grit AssociationBritish Railways BoardBritish Steel IndustryDepartment of TransportElectricity AssociationInstitute of CorrosionNational Federation of Painting and Decorating ContractorsOil and Colour Chemists

6、 AssociationPaint Research AssociationRoyal Society of ChemistryAmendments issued since publicationAmd. No. Date Comments9727 November 1997Renumbers BS 7079:Part E10:1994 as BS EN ISO 11125-5:1997, with addition of EN ISO title page, foreword and Annex ZA, and changes to national forewordBS EN ISO 1

7、1125-5:1997 BSI 04-2000 iContentsPageCommittees responsible Inside front coverNational foreword iiForeword 21Scope 32 Normative references 33 Apparatus 34Sampling 35 Preparation of the sample 36 Procedure 37 Test report 4Annex A (informative) International Standards for metallic blast-cleaning abras

8、ives 5Annex ZA (normative) Normative references to international publications with their relevant European publications 6List of references Inside back coverBS EN ISO 11125-5:1997ii BSI 04-2000National forewordThis British Standard has been prepared by Technical Committee STC/21 and is the English l

9、anguage version of EN ISO 11125-5:1997 Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 5: Determination of percentage defective particles and of microstructure, published by the European Committee for Standardi

10、zation (CEN). It is identical with ISO 11125-5:1993, published by the International Organization for Standardization (ISO).International Standard ISO 11125-5 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 12. Preparation of steel substrates before application of

11、 paints and related products.The other Parts of BS EN ISO 11125 are: Part 1: Sampling; Part 2: Determination of particle size distribution; Part 3: Determination of hardness; Part 4: Determination of apparent density; Part 6: Determination of foreign matter; Part 7: Determination of moisture.A Briti

12、sh 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.Cross-referencesPublication referred to Correspond

13、ing British StandardBS EN ISO Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasivesEN ISO 11125-1:1997 (ISO 11125-1:1993)Part 1:1997 SamplingEN ISO 11125-3:1997 (ISO 11125-3:1993)Part 3:1997 Determination of hardnessSumma

14、ry of pagesThis document comprises a front cover, an inside front cover, pages i and ii, the EN ISO title page, pages 2 to 6, an inside back cover 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 ta

15、ble on the inside front cover.EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 11125-5June 1997ICS 87.020Descriptors: Paints, varnishes, substrates, steel products, blast-cleaning, abrasives, metallic abrasives, tests, determination, defects, microscopic analysis.English versionPreparation of s

16、teel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 5: Determination of percentage defective particles and of microstructure(ISO 11125-5:1993)Prparation des subjectiles dacier avant application de peintures et de produits assimils

17、 Mthodes dessai pour abrasifs mtalliques destins la prparation par projection Partie 5: Dtermination du pourcentage de particules dfectueuses et de la microstructure (ISO 11125-5:1993)Vorbereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen Prfverfahren fr metallische Strahlmittel

18、 Teil 5: Bestimmung des Anteils an defekten krnern und des Gefges (ISO 11125-5:1993)This European Standard was approved by CEN on 1997-05-28. 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 nat

19、ional 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

20、 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

21、, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.CENEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All right

22、s of exploitation in any form and by any means reserved worldwide for CEN national Members.Ref. No. EN ISO 11125-5:1997 EEN ISO 11125-5:1997 BSI 04-20002ForewordThe text of the International Standard from Technical Committee ISO/TC 35, Paints and varnishes, of the International Organization for Stan

23、dardization (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

24、latest by December 1997, and conflicting national standards shall be withdrawn at the latest by December 1997.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

25、, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.NOTE Normative references to International Standards are listed in Annex ZA (normative)EN ISO 11125-5:1997 BSI 04-2000 31 ScopeThis is on

26、e of a number of parts of ISO 11125 dealing with the sampling and testing of metallic abrasives for blast-cleaning.The types of metallic abrasive and requirements on each are contained in the various parts of ISO 11124.The ISO 11124 and ISO 11125 series have been drafted as a coherent set of Interna

27、tional Standards on metallic blast-cleaning abrasives. Information on all parts of both series is given in Annex A.This part of ISO 11125 specifies test methods for the determination of the percentage of defective particles and of the microstructure of metallic blast-cleaning abrasives.2 Normative r

28、eferencesThe following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 11125. 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 11125

29、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 11125-1:1993, Preparation of steel substrates before application of paints and related product

30、s Test methods for metallic blast-cleaning abrasives Part 1: Sampling. ISO 11125-3:1993, Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 3: Determination of hardness. 3 ApparatusOrdinary laboratory apparatus an

31、d glassware, together with the following:3.1 Metallurgical microscope, having a magnification of up to 500.3.2 Binocular microscope, having a magnification of up to 50.4 SamplingTake a representative sample of the product to be tested, as described in ISO 11125-1.5 Preparation of the samplePrepare a

32、nd mount the sample as described in ISO 11125-3.6 Procedure6.1 Determination of cracks, laminations, voids and shrinkageNOTE 1 Definitions of defects are given in the part of ISO 11124 appropriate to the material under test.6.1.1 Examine the mounted sample (see clause 5) using the binocular microsco

33、pe (3.2) at an appropriate magnification of up to 50. Select the field of view randomly. Examine 50 particles.NOTE 2 Since the number of particles in a field of view will vary by particle size, it may be necessary to examine more than one field.6.1.2 Count the number of particles witha) cracks,b) la

34、minations,c) voids andd) shrinkage defects.Particles with more than one defect shall only be counted once.6.1.3 Calculate the percentage of each type of defect and the total percentage of defects.6.2 Determination of defectively shaped shot particles6.2.1 Place approximately 2 g of shot, one layer d

35、eep, on a glass microscope slide or in a dish. Examine the shot using the binocular microscope (3.2) at an appropriate magnification. Select the field of view randomly. Examine 50 particles.NOTE 3 Since the number of particles in a field of view will vary by particle size, it may be necessary to exa

36、mine more than one field.NOTE 4 For particle sizes of S200 and above, it may be necessary to use more than one sample to allow 50 particles to be examined.6.2.2 Count the number of particles with a length greater than twice the maximum particle width.6.2.3 Calculate the percentage of defective parti

37、cles.6.3 Determination of defectively shaped grit particles6.3.1 Place approximately 2 g of grit, one layer deep, on a glass microscope slide. Examine the grit using the binocular microscope (3.2) at an appropriate magnification. Select the field of view randomly. Examine 50 particles.NOTE 5 Since t

38、he number of particles in a field of view will vary by particle size, it may be necessary to examine more than one field.NOTE 6 For particle sizes of G200 and above, it may be necessary to use more than one sample to allow 50 particles to be examined.6.3.2 Count the number of round and half-round pa

39、rticles, taking particular care to note the particle orientation so as to avoid misjudging the particle shape.EN ISO 11125-5:19974 BSI 04-20006.3.3 Calculate the percentage of defective particles.6.4 Determination of defectively shaped cylindrical particles6.4.1 Place approximately 2 g of cylindrica

40、l particles, one layer deep, on a glass microscope slide. Examine the particles using the binocular microscope (3.2) at an appropriate magnification. Select the field of view randomly. Examine 50 particles.NOTE 7 Since the number of particles in a field of view will vary by particle size, it may be

41、necessary to examine more than one field.6.4.2 Count the number misshapen particles, taking particular care to note the particle orientation so as to avoid misjudging the particle shape.6.4.3 Calculate the percentage of defective particles.6.5 Determination of microstructure6.5.1 Etch a representati

42、ve sample (see clause 5) with 2 % nital or picral to reveal the microstructure so that it can be examined metallurgically. Examine the microstructure of 50 randomly selected particles using the metallurgical microscope (3.1) at an appropriate magnification.6.5.2 Count the number of particles having

43、unacceptable structures.6.5.3 Calculate the percentage of particles having an undesirable microstructure.7 Test reportThe 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 11124 (see An

44、nex A), if applicable;b) a reference to this part of ISO 11125 (ISO 11125-5);c) the result of each test;d) any deviation from the test method specified;e) the date of each test;f) the name of the person who carried out each test.EN ISO 11125-5:1997 BSI 04-2000 5Annex A (informative) International St

45、andards for metallic blast-cleaning abrasivesRequirements and test methods for metallic blast-cleaning abrasives are contained in ISO 11124 and ISO 11125, respectively.ISO 11124 will consist of the following parts, under the general title:Preparation of steel substrates before application of paints

46、and related products Specification for metallic blast-cleaning abrasives Part 1: General introduction and classification; Part 2: Chilled-iron grit; Part 3: High-carbon cast-steel shot and grit; Part 4: Low-carbon cast-steel shot; Part 5: Cut steel wire.ISO 11125 will consist of the following parts,

47、 under the general title:Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 1: Sampling; Part 2: Determination of particle size distribution; Part 3: Determination of hardness; Part 4: Determination of apparent de

48、nsity; Part 5: Determination of percentage defective particles and of microstructure; Part 6: Determination of foreign matter; Part 7: Determination of moisture; Part 8: Determination of abrasive mechanical properties.EN ISO 11125-5:19976 BSI 04-2000Annex ZA (normative) Normative references to inter

49、national publications with their relevant European publicationsThis European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of t