1、BRITISH STANDARD CONFIRMED DECEMBER 1998 BS EN ISO 11124-2:1997 BS7079-E2: 1994 Incorporating Amendment No.1 to BS7079-E2:1994 (renumbers BS as BSENISO11124-2: 1997) Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abrasives
2、 Part 2: Chilled-iron grit The European Standard EN ISO11124-2:1997 has the status of a British Standard ICS 25.220.10; 87.020BSENISO11124-2:1997 This British Standard, having been prepared under thedirectionof the Surface Treatments and Coatings Standards Policy Committee waspublished under the aut
3、horityof the Standards Boardand comes into effect on 15March1994 BSI 04-2000 The following BSI references relate to the work on this standard: Committee reference STC/21 Draft for comment 92/50231 DC ISBN 0 580 22895 9 Committees responsible for this British Standard The preparation of this British
4、Standard was entrusted by the Surface Treatments and Coatings Standards Policy Committee (STC/-) to Technical CommitteeSTC/21, upon which the following bodies were represented: Association of Consulting Engineers British Chemical Engineering Contractors Association British Coatings Federation Ltd. B
5、ritish 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
6、 Association Royal Society of Chemistry Amendments issued since publication Amd. No. Date Comments 9721 November 1997 Indicated by a sideline in the marginBSENISO11124-2:1997 BSI 04-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Normative r
7、eferences 3 3 Definitions 3 4 Designation of abrasives 4 5 Sampling 4 6 Requirements for chilled-iron grit abrasives 4 7 Package identification and lot traceability 4 8 Information to be provided by the manufacturer or supplier 4 Annex A (informative) Approximately equivalent codings for shot and gr
8、it abrasives 7 Annex B (informative) Bibliography 8 Annex ZA (normative) Normative references to international publications with their relevant European publications Inside back cover Table 1 Screening specifications by grade Chilled-iron grit Cumulative% retained 5 Table 2 6 Table A.1 7BSENISO11124
9、-2:1997 ii BSI 04-2000 National foreword This British Standard has been prepared by Technical Committee STC/21 and is the English language version of EN ISO 11124-2:1997 Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abras
10、ives Part2: Chilled-iron grit, published by the European Committee for Standardization (CEN). It is identical with ISO11124-2:1993, published by the International Organization for Standardization (ISO). International Standard ISO11124-2 was prepared by Technical Committee ISO/TC35, Paints and varnis
11、hes, Subcommittee SC12. Preparation of steel substrates before application of paints and related products. The other parts of BS EN ISO11124 are: Part 1: General introduction and classification; Part 3: High-carbon cast-steel shot and grit; Part 4: Low-carbon cast-steel shot. Cross-references The Br
12、itish 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. Attent
13、ion is drawn toAnnex ZA, which gives the European Standards that correspond to the International Standards referred to. 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
14、 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, theEN ISO title page, pages 2 to 8, an inside back cover and a back cover. This standard has been updated (see copyright date)
15、 and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO11124-2 June1997 ICS 87.020 Descriptors: Paints, varnishes, substrates, steel products, blast-cleaning, abrasives, metallic abras
16、ives, specifications, designation English version Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abrasives Part 2: Chilled-iron grit (ISO 11124-2:1993) Prparation des subjectiles dacier avant application de peintures et de
17、 produits assimils Spcifications pour abrasifs mtalliques destins la prparation par projection Partie2: Grenaille angulaire (ISO 11124-2:1993) Vorbereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen Anforderungen an metallische Strahlmittel Teil2: Hartgu, kantig (Grit) (ISO11124-
18、2:1993) This European Standard was approved by CEN on1997-05-28. 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 national standard without any alteration. Up-to-date lists and bibliographical r
19、eferences 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 membe
20、r 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, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portuga
21、l, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr 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 C
22、EN national Members. Ref. No. EN ISO11124-2:1997EENISO11124-2:1997 BSI 04-2000 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 over as a European Standard by Technica
23、l 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 by December1997, and conflicting national standards shall be with
24、drawn at the latest by December1997. According to CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxe
25、mbourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. NOTENormative references to International Standards are listed inAnnex ZA (normative).ENISO11124-2:1997 BSI 04-2000 3 WARNING Equipment, materials and abrasives used for surface preparation can be hazardous if u
26、sed carelessly. Many national regulations 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 adequa
27、te instructions are given and that all required precautions are exercised. 1 Scope This part of ISO11124 specifies requirements for 12 grades of chilled-iron grit abrasives, as supplied for blast-cleaning processes. It specifies ranges of particle sizes, together with corresponding grade designation
28、s. Values are specified for hardness, density, defect/structural requirements and chemical composition. The requirements specified in this part of ISO11124 apply to abrasives supplied in the “new” condition only. They do not apply to abrasives either during or after use. Test methods for metallic bl
29、ast-cleaning abrasives are given in the various parts of ISO11125. Chilled-iron grit abrasives are used in both static and site blasting equipment. They are most often selected where a facility exists for recovery and re-use of the abrasive. NOTE 1Information on commonly referenced national standard
30、s for metallic abrasives and their approximate relationship with ISO11124 is given inAnnex A andAnnex B. NOTE 2Although this part of ISO11124 has been developed specifically to meet requirements for preparation of steelwork, the properties specified will generally be appropriate for use when prepari
31、ng 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 methods Part 2: Abrasive blast-cleaning. 2 Normative references The foll
32、owing standards contain provisions which, through reference in this text, constitute provisions of this part of ISO11124. 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 ISO11124 are encouraged to i
33、nvestigate 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 9556:1989, Steel and iron Determination of total carbon content Infrared absorption method after combustion in a
34、n induction furnace. ISO 11125-1:1993, Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part1: Sampling. ISO 11125-2:1993, Preparation of steel substrates before application of paints and related products Test method
35、s for metallic blast-cleaning abrasives Part 2: Determination of particle size distribution. 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. ISO 11125-4:1993, Pre
36、paration of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 4: Determination of apparent density. ISO 11125-5:1993, Preparation of steel substrates before application of paints and related products Test methods for metallic b
37、last-cleaning abrasives Part 5: Determination of percentage defective particles and of microstructure. ISO 11125-6:1993, Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 6: Determination of foreign matter. ISO 1
38、1125-7:1993, Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 7: Determination of moisture. 3 Definitions For the purposes of this part of ISO11124, the following definitions apply. 3.1 chilled-iron shot a metal
39、lic blast-cleaning abrasive produced by a casting process in which molten iron is formed into shot (see also3.3) by means of an atomization process 3.2 chilled-iron grit a metallic blast-cleaning abrasive obtained by crushing various chilled iron-shot sizes into sharp-edged angular particles NOTE 3C
40、hilled-iron shot may also be used as a blast-cleaning abrasive but is not included in this part of ISO11124. 3.3 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 defectsENISO1
41、1124-2:1997 4 BSI 04-2000 3.4 grit particles that are predominantly angular, that have fractured faces and sharp edges and that are less than half-round in shape 3.5 defect A fault or weakness in an abrasive which, if present at or above a given level, may be detrimental to the performance of the ab
42、rasive (seeTable 2). 3.5.1 void a smooth-surfaced internal cavity considered undesirable when greater than10% of the cross-sectional area of a particle 3.5.2 shrinkage defect an internal cavity with a rough dendritic surface or a zone of microporosity, considered undesirable when greater than40% of
43、the cross-sectional area of a particle 3.5.3 crack a linear discontinuity that has a length-to-width ratio of3:1 or greater, that extends over more than20% of the diameter or shortest dimension of a particle and that is radial in direction 3.6 foreign matter any material or particles mixed with the
44、abrasive which are not attached to the abrasive particles and which are nonmagnetic 4 Designation of abrasives Chilled-iron abrasives shall be identified by “Abrasive ISO 11124” and the abbreviation “M/CI” indicating metallic, chilled-iron abrasive. The symbol “G” shall follow to indicate the requir
45、ed particle shape of the grit as purchased. The designation shall be completed by a 3-digit number denoting the grade, or nominal particle size, required. EXAMPLE 1 Abrasive ISO 11124 M/CI/G100 denotes an abrasive of the metallic, chilled-iron type, complying with the requirements of this part of IS
46、O11124, of particle shape grit and of grade 100 (i.e.nominal particle size1,00mm). It is essential that this full product designation is quoted on all orders. NOTE 4Grade requirements and codes are specified inTable 1. The grade code is based on a number indicating the approximate middle of the part
47、icle size range, or nominal diameter, for each grade, expressed in millimetres 100. NOTE 5Annex A provides guidance on approximately equivalent grades and codings in other commonly referenced national standards for cast-metal abrasives. 5 Sampling Sampling procedures shall be as specified in ISO1112
48、5-1. 6 Requirements for chilled-iron grit abrasives The requirements for chilled-iron grit abrasives shall be as specified inTable 2. 7 Package identification and lot traceability All supplies shall be clearly marked and identified using the designation specified in clause4. The unit of sale, i.e.pa
49、llet, drum, box, etc., shall be clearly labelled with the full product coding. Sub-units, i.e.bags, shall be marked with the particle shape and grade codes. NOTE 6Inclusion of additional marking to allow product traceability to a particular production period or lot is strongly recommended. Traceability references should be included at least at the pallet, drum or box level of package marking. 8 Information to be provided by the manufacturer or supplier The manufacturer or supplier shall pro
