1、BRITISH STANDARD CONFIRMED DECEMBER 1998 BSENISO 11126-4:1998 BS 7079-F4: 1994 Incorporating Amendment No. 1 to BS 7079-F4:1994 (which it renumbers as BS EN ISO 11126-4:1998) Preparation of steel substrates before application of paints and related products Specifications for non-metallic blast-clean
2、ing abrasives Part 4: Coal furnace slag The European Standard EN ISO 11126-4:1998 has the status of a British Standard ICS 25.220.10; 87.020BSENISO11126-4:1998 This British Standard, having been prepared under the directionof the Surface Treatments and Coatings Standards Policy Committee, waspublish
3、ed under the authorityof the Standards Boardand 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 92/50243 DC ISBN 0 580 23060 0 Committees responsible for this British Standard The preparatio
4、n 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 Coating
5、s 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 Associa
6、tion Paint Research Association Royal Society of Chemistry Amendments issued since publication Amd. No. Date Comments 10090 August 1998 Indicated by a sideline in the marginBSENISO11126-4:1998 BSI 04-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text
7、of ENISO11126-4 3BSENISO11126-4:1998 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 11126-4:1998 Preparation of steel substrates before application of paints and related products Specification for non-m
8、etallic blast-cleaning abrasives Part 4: Coal furnace slag, published by the European Committee for Standardization (CEN). It is identical with ISO 11126-4:1993, published by the International Organization for Standardization (ISO). International Standard ISO 11126-4 was prepared by Technical Commit
9、tee 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 Cat
10、alogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their
11、 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, theENISOtitle page, pages 2 to 6 and a back cover. This standard has been updated (see co
12、pyright date) and may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11126-4 March 1998 ICS 87.020 Descriptors: Paints, varnishes, substrates, steel products, blast-cleaning, abrasives,
13、 non-metallic abrasives, specifications English version Preparation of steel substrates before application of paints and related products Specifications for non-metallic blast-cleaning abrasives Part 4: Coal furnace slag (ISO 11126-4:1993) Prparation des subjectiles dacier avant application de peint
14、ures et de produits assimils Spcifications pour abrasifs non mtalliques destines la prparation par projection Partie 4: Scories de chaudire a charbon (ISO 11126-4:1993) Vorbereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen Anforderungen an nichtmetallische Strahlmittel Teil 4:
15、Strahlmittel aus Schmelzkammerschlacke (ISO 11126-4:1993) This European Standard was approved by CEN on 2 March 1998. 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 a
16、ny 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 b
17、y 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, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ire
18、land, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation
19、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11126-4:1998 EENISO11126-4:1998 BSI 04-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC 35, Paints and varnishes, of the International Organization for Standardization (IS
20、O) 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 Sept
21、ember 1998, and conflicting national standards shall be withdrawn at the latest by September 1998. According to CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland
22、, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. NOTENormative references to International Standards are listed in Annex ZA (normative). Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definition 3 4 Designation of abrasives
23、 3 5 Sampling 4 6 Requirements 4 7 Identification and marking 4 8 Information to be supplied by the manufacturer or supplier 4 Annex A (informative) Bibliography 5 Annex ZA (normative) Normative references to international publications with their relevant European publications 6 Table 1 Particle siz
24、e distribution 4 Table 2 Particular requirements for coal furnace slag abrasives 4ISO11126-4:1993(E) BSI 04-1999 3 WARNING Equipment, materials and abrasives used for surface preparation can be hazardous if used carelessly. Many national regulations exist for those materials and abrasives that are c
25、onsidered 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 that all required precautions are exercised. 1 Scope This part
26、 of ISO 11126 specifies requirements for coal furnace slag abrasives, as supplied for blast-cleaning processes. It specifies ranges of particle sizes and values for apparent density, Mohs hardness, moisture content, conductivity of aqueous extract and water-soluble chlorides. The requirements specif
27、ied in this part of ISO 11126 apply to abrasives supplied in the “new” condition only. They do not apply to abrasives either during or after use. Test methods for non-metallic blast-cleaning abrasives are given in the various parts of ISO11127. NOTE 1Information on commonly referenced national stand
28、ards for non-metallic abrasives is given in Annex A. NOTE 2Although this part of ISO 11126 has been developed specifically to meet requirements for preparation of steelwork, the properties specified will generally be appropriate for use when preparing other material surfaces, or components, using bl
29、ast-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 following standards contain provisions which, through r
30、eference in this text, constitute provisions of this part of ISO 11126. 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 11126 are encouraged to investigate the possibility of applying the most r
31、ecent editions of the standards indicated below. Members of IEC and ISOmaintain registers of currently valid International Standards. ISO11127-1:1993, Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 1: Samp
32、ling. ISO 11127-2:1993, 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 11127-3:1993, Preparation of steel substrates before application of paints and rel
33、ated products Test methods for non-metallic blast-cleaning abrasives Part 3: Determination of apparent density. ISO 11127-4:1993, Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 4: Assessment of hardness by
34、 a glass slide test. ISO 11127-5:1993, Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasives Part 5: Determination of moisture. ISO 11127-6:1993, Preparation of steel substrates before application of paints and relate
35、d products Test methods for non-metallic blast-cleaning abrasives Part 6: Determination of water-soluble contaminants by conductivity measurement. ISO 11127-7:1993, Preparation of steel substrates before application of paints and related products Test methods for non-metallic blast-cleaning abrasive
36、s Part 7: Determination of water-soluble chlorides. 3 Definition For the purposes of this part of ISO 11126, the following definition applies. 3.1 coal furnace slag a synthetic mineral blast-cleaning abrasive manufactured, by granulation in water, drying and sieving, with or without mechanical crush
37、ing processes, from slag originating when coal is burned in coal-fired power stations. It is basically aluminium silicate slag NOTE 3Slags manufactured by air cooling instead of granulation in water are generally of a different mineral structure and are therefore not covered by this part of ISO11126
38、. 4 Designation of abrasives Coal furnace slag abrasives shall be identified by “Abrasive ISO 11126” and the abbreviation N/CS indicating non-metallic, coal furnace slag abrasive. This shall be followed, without spaces, by an oblique stroke and then by the symbol G to indicate the required particle
39、shape of the abrasive, when purchased, as grit. The designation shall be completed by numbers denoting the particle size range, in millimetres, required (seeTable 1).ISO11126-4:1993(E) 4 BSI 04-1999 EXAMPLE 1 Abrasive ISO11126 N/CS/G 0,2-1,4 denotes an abrasive of the non-metallic coal furnace slag
40、type, complying with the requirements of this part of ISO 11126, of initial particle shape grit and particle size range0,2mm to 1,4mm. It is essential that this full product designation is quoted on all orders. 5 Sampling Sampling procedures shall be as specified in ISO11127-1. 6 Requirements 6.1 Ge
41、neral requirements Coal furnace slag abrasives shall be vitreous amorphous materials that absorb no water but may be wetted on the surface only. Silica in coal furnace slag abrasives shall be present as bonded silicate. The content of free crystalline silica (such as quartz, tridimite or crystobalit
42、e) shall not exceed 1 %(m/m), as determined by X-ray diffraction. The material shall be free from corrosive constituents and adhesion-impairing contaminants. NOTE 4Coal furnace slag abrasives as supplied have a predominantly angular shape. More spherical particle shapes are not excluded as their eff
43、ect on the surface profile obtained corresponds generally to that produced by angular abrasive particles. 6.2 Particular requirements Particular requirements for coal furnace slag abrasives shall be as specified in Table 2. 7 Identification and marking All supplies shall be clearly marked or identif
44、ied using the appropriate designation as specified in clause4, either directly or by the accompanying delivery note. 8 Information to be supplied by the manufacturer or supplier The manufacturer or supplier shall supply, if requested, a test report detailing results for any relevant property as dete
45、rmined by the appropriate method specified in Table 2. Table 1 Particle size distribution Table 2 Particular requirements for coal furnace slag abrasives Particle size range a mm 0,2 to0,5 0,2 to 1 0,2 to1,4 0,2 to 2 0,2 to2,8 0,5 to 1 0,5 to1,4 1,0 to 2 1,4 to2,8 Oversize Sieve size mm 0,5 1 1,4 2
46、2,8 1 1,4 2 2,8 Residue % (m/m) max. 10 10 10 10 10 10 10 10 10 Nominal size Sieve size mm 0,2 0,2 0,2 0,2 0,2 0,5 0,5 1 1,4 Residue % (m/m) min. 85 85 85 85 85 80 80 80 80 Undersize Sieve size mm 0,2 0,2 0,2 0,2 0,2 0,5 0,5 1 1,4 Through-flow %(m/m) max. 5 5 5 5 5 10 10 10 10 a By agreement between
47、 the interested parties, abrasives of different particle size ranges may be mixed together. Details of proportions of nominal size, oversize and undersize shall be specified. The maximum particle size shall not exceed 3,15 mm and the proportion of particles less than 0,2 mm shall not exceed 5 % (m/m
48、). Property Requirement Test method Particle size range and distribution See Table 1 ISO11127-2 Apparent density kg/m 3 kg/dm 3 (2,4 to 2,6)10 3 2,4to2,6 ISO11127-3 Mohs hardness a min. 6 ISO11127-4 Moisture % (m/m) max. 0,2 ISO11127-5 Conductivity of aqueous extract mS/m max. 25 ISO11127-6 Water-so
49、luble chlorides % (m/m) max. 0,002 5 ISO11127-7 a Another method for assessing hardness may be used, together with an appropriate minimum requirement, by agreement between the interested parties.ISO11126-4:1993(E) BSI 04-1999 5 Annex A (informative) Bibliography Commonly referenced national standards for non-metallic abrasives are as follows: 1 DIN 8200:1982, Strahlverfahrenstechnik; Begriffe, Einordnung der Strahlverfahren (Blasting; terms, classification of blasting techniques). 2 DIN 820
