1、BRITISH STANDARD CONFIRMED DECEMBER 1998 BS EN ISO 11124-4:1997 BS7079-E4: 1994 Incorporating Amendment No.1 to BS7079-E4:1994 (renumbers BS as BSENISO11124-4: 1997) Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cleaning abrasives
2、 Part 4: Low-carbon cast-steel shot The European Standard EN ISO11124-4:1997 has the status of a BritishStandard ICS 25.220.10; 87.020BSENISO11124-4:1997 This British Standard, having been prepared under the directionof the Surface Treatments and Coatings Standards Policy Committee, waspublished und
3、er the authorityof the Standards Boardand comes into effect on 15March 1994 BSI 04-2000 The following BSI references relate to the work on this standard: Committee referenceSTC/21 Draft for comment92/50233 DC ISBN 0 580 22899 1 Committees responsible for this British Standard The preparation of this
4、 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 Federat
5、ion 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 Pain
6、t Research Association Royal Society of Chemistry Amendments issued since publication Amd. No. Date of issue Comments 9723 November 1997 Indicated by a sideline in the marginBSENISO11124-4:1997 BSI 04-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Sc
7、ope 3 2 Normative references 3 3 Definitions 3 4 Designation of abrasives 4 5 Sampling 4 6 Requirements for low-carbon cast-steel shot abrasives 4 7 Package identification and lot traceability 4 8 Information to be provided by the manufacturer or supplier 4 Annex A (informative) Approximately equiva
8、lent codings for shot and grit 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 Low-carbon cast-steel shot Cumulative% retaine
9、d 5 Table 2 6 Table A.1 7BSENISO11124-4:1997 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 ISO11124-4:1997 Preparation of steel substrates before application of paints and related products Specificatio
10、ns for metallic blast-cleaning abrasives Part 4: Low-carbon cast-steel shot, published by the European Committee for Standardization (CEN). It is identical with ISO11124-4:1993, published by the International Organization for Standardization (ISO). International Standard ISO11124-4 was prepared by T
11、echnical Committee ISO/TC35, Paints and varnishes, 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 2: Chilled-iron grit; Part 3: High-carbon cast-steel s
12、hot and grit. Together with Part3, this Part of BS EN ISO11124 supersedes BS2451:1963, which is withdrawn. 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
13、 “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. Attention 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
14、 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
15、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) 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 IS
16、O 11124-4 June 1997 ICS 87.020 Descriptors: Paints, varnishes, substrates, steel products, blast-cleaning, abrasives, metallic abrasives, specifications, designation English version Preparation of steel substrates before application of paints and related products Specifications for metallic blast-cl
17、eaning abrasives Part 4: Low-carbon cast-steel shot (ISO11124-4:1993) Prparation des subjectiles dacier avant application de peintures et de produits assimils Spcifications pour abrasifs mtalliques destins la prparation par projection Partie4:Grenaillerondeenaciermoul bas carbone (ISO 11124-4:1993)
18、Vorbereitung von Stahloberflchen vor dem Auftragen von Beschichtungsstoffen Anforderungen an metallische Strahlmittel Teil 4: Stahlgu mit niedrigem Kohlenstoffgehalt, kugelig (shot) (ISO 11124-4:1993) This European Standard was approved by CEN on 1997-05-28. CEN members are bound to comply with the
19、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
20、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 versio
21、ns. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Committee for Standardization Comit Europen
22、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 CEN national Members. Ref. No. EN ISO11124-4:1997 EENISO11124-4:1997 BSI 04-2000 2 Foreword The text of the
23、 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 Technical Committee CEN/TC139, Paints and varnishes, the secretariat of which is held by DIN. This European Stand
24、ard 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 withdrawn at the latest by December1997. According to CEN/CENELEC Internal Regulations, the national standard
25、s organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. NOTENormative re
26、ferences to International Standards are listed inAnnex ZA (normative).ENISO11124-4:1997 BSI 04-2000 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 considered to
27、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 of ISO11124
28、specifies requirements for12grades of low-carbon cast-steel shot abrasive, as supplied for blast-cleaning processes. 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
29、 the “new” condition only. They do not apply to abrasives either during or after use. Test methods for metallic blast-cleaning abrasives are given in the various parts of ISO11125. Low-carbon cast-steel shot abrasives are used in both static and site blasting equipment. They are most often selected
30、where a facility exists for recovery and re-use of the abrasive. NOTE 1Information on commonly referenced national standards for metallic abrasives and their approximate relationship with ISO11124 is given inAnnex A and Annex B. NOTE 2Although this part of ISO 11124 has been developed specifically t
31、o meet requirements for preparation of steelwork, the 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 applicatio
32、n of paints and related products Surface preparation methods Part 2: Abrasive blast-cleaning. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO11124. At the time of publication, the editions indicated we
33、re valid. All standards are subject to revision, and parties to agreements based on this part of ISO11124 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 St
34、andards. ISO 439:1982, Steel and cast iron Determination of total silicon Gravimetric method. ISO 629:1982, Steel and cast iron Determination of manganese content Spectrophotometric method. ISO 4935:1989, Steel and iron Determination of sulfur content Infrared absorption method after combustion in a
35、n induction furnace. ISO 9556:1989, Steel and iron Determination of total carbon content Infrared absorption method after combustion in an induction furnace. ISO 10714:1992, Steel and iron Determination of phosphorus content Phosphovanadomolybdate spectrophotometric method. ISO 11125-1:1993, Prepara
36、tion of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part 1: Sampling. ISO 11125-2:1993, Preparation of steel substrates before application of paints and related products Test methods for metallic blast-cleaning abrasives Part
37、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, Preparation of steel substrates before applicati
38、on 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 blast-cleaning abrasives Part 5: Determination
39、 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 11125-7:1993, Preparation of steel substrates
40、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 low-carbon cast-steel shot a metallic blast-cleaning abrasive produced
41、 by a casting process in which molten low-carbon steel is formed into shot (see also3.2) by means of an atomization processENISO11124-4:1997 4 BSI 04-2000 3.2 shot particles that are predominantly round, that have a length of less than twice the maximum particle width and that do not have edges, bro
42、ken faces or other sharp surface defects 3.3 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 abrasive (seeTable 2). 3.3.1 void a smooth-surfaced internal cavity considered undesirable when greater than10% of the cros
43、s-sectional area of a particle 3.3.2 shrinkage defect an internal cavity with a rough dendritic surface or a zone of microporosity, considered undesirable when greater than 40% of the cross-sectional area of a particle 3.3.3 crack a linear discontinuity that has a length-to-width ratio of 3:1 or gre
44、ater, that extends over more than20% of the diameter or shortest dimension of a particle and that is radial in direction 3.4 foreign matter any material or particles mixed with the abrasive which are not attached to the abrasive particles and which are nonmagnetic 4 Designation of abrasives Low-carb
45、on cast-steel shot abrasives shall be identified by “Abrasive ISO11124” and the abbreviation “M/LCS” indicating metallic, low-carbon cast-steel abrasive. The symbol “S” shall follow to indicate the required particle shape of the shot as purchased. The designation shall be completed by a3-digit numbe
46、r denoting the grade, or nominal particle size, required. EXAMPLE 1 Abrasive ISO 11124 M/LCS/S100 denotes an abrasive of the metallic, low-carbon cast-steel type, complying with the requirements of this part of ISO11124, of particle shape shot and grade100 (i.e.nominal particle size1,00mm). It is es
47、sential that this full product designation is quoted on all orders. NOTE 3Grade requirements and codes are specified inTable 1, The grade code is based on a number indicating the approximate middle of the particle size range, or nominal diameter, for each grade, expressed in millimetres 100. NOTE 4A
48、nnex 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 ISO11125-1. 6 Requirements for low-carbon cast-steel shot abrasives The requirements for low-carbo
49、n cast-steel 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.pallet, 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 5Inclusion of additional marking to allow product traceability to a particular production per
