BS EN ISO 11124-1-1994 Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abrasives General introduction a.pdf

1、BRITISH STANDARD CONFIRMED DECEMBER 1998 BS EN ISO 11124-1:1997 Incorporating Amendment No. 1 to BS 7079-E1:1994 (renumbers BS as BSEN ISO 11124-1: 1997) Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abrasives Part 1: Gen

2、eral introduction and classification The European Standard EN ISO 11124-1:1997 has the status of a BritishStandard ICS 25.220.10; 87.020BSENISO11124-1:1997 This British Standard, having been prepared under the directionof the Surface Treatments and Coatings Standards Policy Committee, waspublished u

3、nder the authorityof the Standards Boardand comes into effect on 15March1994 BSI 03-2000 The following BSI references relate to the work on this standard: Committee reference STC/21 Draft for comment 92/54599 DC ISBN 0 580 22894 0 Committees responsible for this British Standard The preparation of t

4、his 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 Fede

5、ration 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 P

6、aint Research Association Royal Society of Chemistry Amendments issued since publication Amd. No. Date Comments 9589 September 1997 Indicated by a sideline in the marginBSENISO11124-1:1997 BSI 03-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Introduct

7、ion 3 1 Scope 3 2 Definitions 3 3 Classification 4 4 Designation of abrasives 4 5 Package indentification and lot traceability 5 Annex A (informative) International Standards for metallic and non-metallic blast-cleaning abrasives 6 Table 1 Commonly used metallic (M) blast-cleaning abrasives for stee

8、l substrate preparation 4 Table 2 Initial particle shape 4BSENISO11124-1:1997 ii BSI 03-2000 National foreword This Part of BS7079 has been prepared under the direction of the Surface Treatments and Coatings Standards Policy Committee. It is identical with ISO11124-1:1993 Preparation of steel substr

9、ates before application of paints and related products Specifications for metallic blast-cleaning abrasives Part1:General introduction and classification, published by the International Organization for Standardization (ISO). In 1997, the European Committee for Standardization (CEN) accepted ISO1112

10、4-1:1993 as European Standard EN ISO11124-1:1997. International Standard ISO11124-1 was prepared by Technical Committee ISO/TC35, Paints and varnishes, Subcommittee SC12, Preparation of steel substrates before application of paints and related products. The other Parts of ISO11124 are identical with

11、 the following Parts of BS7079: Part E1: General introduction and classification; Part E2: Specification for chilled-iron grit; Part E3: Specification for high-carbon cast-steel shot and grit; Part E4: Specification for low-carbon cast-steel shot. A further Part, ISO11124-5 Cut steel wire, is in pre

12、paration. 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

13、comprises a front cover, an inside front cover, pages i and ii, theEN ISO title page, pages2 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.EUROPEAN STANDARD

14、NORME EUROPENNE EUROPISCHE NORM EN ISO 11124-1 January 1997 ICS 87.020 Descriptors: See ISO document English version Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abrasives Part 1: General introductionandclassification (I

15、SO11124-1:1993) Prparation des subjectiles dacier avant application de peintures et de produits assimils Spcifications pour abrasifs mtalliques destins la prparation par projection Partie 1: Introduction gnrale et classification (ISO 11124-1:1993) Vorbereitung von Stahloberflchen vor dem Auftragen v

16、on Beschichtungsstoffen Anforderungen an metallische Strahlmittel Teil1: Allgemeine Einleitung und Einteilung (ISO 11124-1:1993) This European Standard was approved by CEN on1996-12-27. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin

17、g 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 versio

18、ns (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, De

19、nmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36,

20、 B-1050 Brussels 1997 Copyright reserved to CEN members Ref. No. EN ISO 11124-1:1997 EENISO11124-1:1997 BSI 03-2000 2 Foreword The text of the International Standard from Technical Committee ISO/TC35, Paints and varnishes, of the International Organization for Standardization (ISO) has been taken ov

21、er as an European Standard by Technical Committee CEN/TC139, 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 byJuly1997, and conflicting

22、 national standards shall be withdrawn at the latest byJuly1997. According to CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway

23、, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. Endorsement notice The text of the International Standard ISO11124-1:1993 has been approved by CEN as a European Standard without any modification.ENISO11124-1:1997 BSI 03-2000 3 Introduction This is one of a number of parts of ISO11124 s

24、pecifying requirements for metallic abrasives for blast-cleaning. Test methods for metallic blast-cleaning abrasives are given in the various parts of ISO11125 (seeAnnex A). The requirements for non-metallic abrasives commonly used for blast-cleaning are specified in the various parts of ISO11126. T

25、est methods to be used to define these requirements are contained in the various parts of ISO11127 (seeAnnex A). Abrasive blast-cleaning techniques are widely used to clean and prepare surfaces. During work on development of a series of International Standards dealing with the preparation of steel s

26、ubstrates before application of paints and related products, it was decided that a need existed for a series of International Standards covering those blast-cleaning abrasives commonly used in preparation of steelwork. The type of blast-cleaning abrasive used and its particle shape can significantly

27、 affect the surface appearance and profile form of the treated surface. The informative supplement to ISO 8501-1 1)provides photographic examples of the change in appearance imparted to steel when blast-cleaned with different abrasive types. ISO8503-2 2)describes the assessment of the surface roughn

28、ess of prepared surfaces using comparators.Table 1 of this part of ISO11124 identifies the type of comparator to be used with each of the blast-cleaning abrasives considered. WARNING Equipment, materials and abrasives used for surface preparation can be hazardous if used carelessly. Many national re

29、gulations exist for those materials and abrasives that are considered to be hazardous during or after use (waste management), such as free silica or carcinogenic or toxic substances. These regulations are therefore to be observed. It is important to ensure that adequate instructions are given and th

30、at all required precautions are exercised. 1 Scope This part of ISO11124 describes a classification of metallic blast-cleaning abrasives for the preparation of steel substrates before application of paints and related products. It specifies the characteristics which are required for the complete des

31、ignation of such abrasives. This part of ISO11124 applies to abrasives supplied in the “new” or unused condition only. It does not apply to abrasives either during or after use. NOTE 1Although this part of ISO11124 has been developed specifically to meet requirements for preparation of steelwork, th

32、e properties specified will generally be appropriate for use when preparing other material surfaces, or components, using blast-cleaning techniques. These techniques are described in ISO8504-2:1992, Preparation of steel substrates before application of paints and related products Surface preparation

33、 methods Part 2: Abrasive blast-cleaning. 2 Definitions For the purposes of this part of ISO11124, the following definitions apply. 2.1 blast-cleaning abrasive solid material intended to be used for abrasive blast-cleaning 2.2 abrasive blast-cleaning impingement of a high-kinetic-energy stream of bl

34、ast-cleaning abrasive on to the surface to be prepared 2.3 shot particles that are predominantly round, that have a length of less than twice the maximum particle width and that do not have edges, broken faces or other sharp surface defects 2.4 grit particles that are predominantly angular, that hav

35、e fractured faces and sharp edges and that are less than half-round in shape 1) ISO 8501-1:1988/Suppl, Preparation of steel substrates before application of paints and related products Visual assessment of surface cleanliness Part 1: Rust grades and preparation grades of uncoated steel substrates an

36、d of steel substrates after overall removal of previous coatings Informative Supplement to Part 1: Representative photographic examples of the change of appearance imparted to steel when blast-cleaned with different abrasives. (To be published). 2) ISO 8503-2:1988, Preparation of steel substrates be

37、fore 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 procedure.ENISO11124-1:1997 4 BSI 03-2000 Table 1 Commonly used metallic (M) blast-cleaning

38、 abrasives for steel substrate preparation 2.5 cylindrical sharp-edged particles, having a diameter to length ratio of1:1, cut so that their faces are approximately at right angles to their centreline 3 Classification 3.1 Abrasive type Blast-cleaning abrasives shall be classified according to materi

39、al, origin or manufacture. Table 1 gives the abbreviated coding which shall be used to identify each of the types considered. NOTE 2The metallic abrasives listed inTable 1 are those commonly used for the preparation of steel substrates before application of paints and related products. The list is n

40、ot intended to be exhaustive. 3.2 Initial particle shape The particle shape characterizes the geometric form of the abrasive particles. Basic forms of metallic blast-cleaning abrasives are specified in Table 2, together with the symbol which shall be used to describe each. NOTE 3As the particle shap

41、e of an abrasive may change during use, only the initial particle shape is given in the various parts of ISO11124. Table 2 Initial particle shape 3.3 Particle size range Metallic blast-cleaning abrasives consist of mixtures of differently sized particles. These shall be classified into size ranges o

42、r grades. A3-digit number shall be used to indicate each particular size range or grade. This number indicates the nominal or approximate midpoint of the size range in millimetres 100. EXAMPLE 1 4 Designation of abrasives Metallic abrasives shall be identified by using the full product designation w

43、hich consists of the term “Abrasive” followed by “ISO 11124” and the abbreviation specified inTable 1. This shall be followed, without spaces, by an oblique stroke and then by the symbol specified inTable 2 to indicate the required particle shape of the abrasive as purchased. The designation shall b

44、e completed, again without a space, by a3-digit number denoting the grade, or nominal particle size, required. If alternative hardnesses of abrasive are available, the particular Vickers hardness (HV) range required shall also be specified. EXAMPLES Type Abbreviation Initial particle shape (see3.2)

45、Comparator a Metallic (M) blast-cleaning abrasives Cast iron Chilled M/CI G G Cast steel High-carbon M/HCS S or G S b Low-carbon M/LCS S S Cut steel wire M/CW C S b a Comparator to be used when assessing the resultant surface profile. The method for evaluating surface profile by comparator is descri

46、bed in ISO8503-2 (see the introduction). b Certain types of abrasive rapidly change their shape when used. As soon as this happens the appearance of the profile changes and becomes more similar to that of the “shot” comparator. Designation and Initial particle shape Symbol Shot round S Grit angular,

47、 irregular G Cylindrical sharp-edged C Grade 200 Approximate middle of the particle size range or nominal diameter of the grade 2,00 mm Particle size range over 2,36 mm Nil over 1,70 mm 80% 2 Abrasive ISO 11124 M/CI/G100 denotes an abrasive of the metallic, chilled-iron type, complying with the requ

48、irements of the appropriate part of ISO 11124, of initial particle shape grit and of grade100 (i.e.nominal particle size1,00mm). 3 Abrasive ISO 11124 M/HCS/G140/ 570-710HV denotes an abrasive of the metallic, high-carbon cast-steel type, complying with the requirements of the appropriate part of ISO

49、11124, of initial particle shape grit and of grade140 (i.e.nominal particle size1,40mm), and with a hardness range of570HV to710HV.ENISO11124-1:1997 BSI 03-2000 5 It is essential that this full product designation is quoted on all orders. 5 Package identification and lot traceability All supplies shall be clearly marked and identified using the appropriate designation as specified in clause4. The unit of sale, i.e.pallet, drum, box, etc., shall be clearly labelled with the full product coding, including hardne