EN ISO 11124-3:1997

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Vorbereitung von Stahloberflächen vor dem Auftragen von Beschichtungsstoffen - Anforderungen an metallische Strahlmittel - Teil 3: Stahlguß mit hohem Kohlenstoffgehalt, kugelig und kantig (Schot und Grit) (ISO 11124-3:1993)Préparation des subjectiles d'acier avant application de peintures et de produits assimilés - Spécifications pour abrasifs métalliques destinés a la préparation par projection - Partie 3: Grenaille ronde et angulaire en acier moulé a haut carbone (ISO 11124-3:1993)Preparation of steel substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives - Part 3: High-carbon cast-steel shot and grit (ISO 11124-3:1993)25.220.10Priprava površineSurface preparationICS:Ta slovenski standard je istoveten z:EN ISO 11124-3:1997SIST EN ISO 11124-3:1997en01-december-1997SIST EN ISO 11124-3:1997SLOVENSKI
STANDARD
INTERNATIONAL STANDARD ISO 11124-3 First edition 1993-12-15 Preparation of steel Substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives - Part 3: High-carbon cast-steel shot and grit Prbparation des subjectiles d’acier avant application de peintures et de produits assimik - Spkifications pour abrasifs m&alliques destines a Ia pkparation par projection - Partie 3: Grenaille ronde et angulaire en acier mouk A haut carbone Reference number ISO 11124-3:1993(E) SIST EN ISO 11124-3:1997

ISO 11124=3:1993(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national Standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Esch member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take patt in the work. ISO collaborates closely with the International Electrotechnical Commission (1 EC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an lnternational Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 11124-3 was prepared by Technical Committee lSO/TC 35, Paints and varnishes, Subcommittee SC 12, Preparation of steel Substrates before application of paints and related products. ISO 11124 consists of the following Parts, under the general title Prep- aration of steel Substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives: - Part 1: General introduction and classifica tion - 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 At the time of publication of this part of ISO 11124, part 5 was in course of preparation. Annexes A and B of this patt of ISO 11124 are for information only. 0 ISO 1993 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronie or mechanical, including photocopying and microfilm, without Permission in writing from the publisher. International Organization for Standardization Case Postale 56 l CH-l 211 Geneve 20 l Switzerland Printed in Switzerland ii SIST EN ISO 11124-3:1997

INTERNATIONAL STANDARD 0 ISO ISO 11124=3:1993(E) Preparation of steel Substrates before application of paints and related products - Specifications for metallic blast-cleaning abrasives - Part 3: High-carbon cast-steel shot and grit WARNING - Equipment, materials and abrasives used for surface preparation tan be hazardous if used 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. lt is important to ensure that adequate instructions are given and that all required precautions are exercised. 1 Scope This patt of ISO 11124 specifies requirements for 14 grades of high-carbon cast-steel shot and 12 grades of high-carbon cast-steel grit, 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 ISO 11124 apply to abrasives supplied in 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 ISO 11125. High-carbon cast-steel shot and grit are used in both static and site blasting equipment. They are most of- ten selected where a facility exists for the recovery and re-use of the abrasive. NOTES 1 Information on commonly referenced national Standards for metallic abrasives and their approximate relationship with ISO 11124 is given in annexes A and B. 2 Although this part of ISO 11124 has been developed specifically to meet requirements for preparation of steelwork, the properties specified will generally be appro- priate for use when preparing other material surfaces, or components, using blast-cleaning techniques. These tech- niques are described in ISO 8504-2:1992, Reparation of steel Substrates before application of pain ts and related products - Surface preparation methods - Part 2: Abras- ive blas t-cleaning. 2 Normative references The following Standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 11124. At the time of publication, the editions indicated were valid. All Standards are subject to revision, and Parties to agreements based on this part cf ISO 11124 are encouraged to investi- gate the possibility of applying the most recent edi- tions of the Standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. SIST EN ISO 11124-3:1997

ISO 11124-3:1993(E) ISO 439:1982, Steel and cast iron - Determination of total Silicon - Gravimetric method. 63 ISO 3 Definitions ISO 629:1982, Steel and cast iron - Determination of manganese content - Spectrophotometric method. ISO 4935: 1989, Steel and iron - Determination of Sulfur con ten t - Infrared absorption method after combustion in an induction furnace. ISO 9556: 1989, Steel and iron - Determination of total carbon con ten t - 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, Preparation 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 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 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 blast-cleaning abrasives - Part 5: Determination of percentage defective par- ticles and of microstructure. ISO 11125-6:1993, Preparation of steel Substrates before application of pain ts and rela ted products - Test methods for metallic blast-cleaning abrasives - Part 6: Determination of foreign matter. ISO 11125-711993, Preparation of steel Substrates before application of paints and related products - Test methods for metallic blast-cleaning abrasives - Part 7: Determination of moisture. For the purposes of this part of ISO 11124, the fol- lowing definitions apply. 3.1 high-carbon cast-steel shot: A metallic blast- cleaning abrasive produced by a casting process in which molten high-carbon steel is formed into shot (see also 3.3) by means of an atomization process. 3.2 high-carbon cast-steel grit: A metallic blast- cleaning abrasive obtained by crushing various high- carbon cast-steel shot sizes into sharp-edged angular particles. 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 defects. 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 characteristics of the abrasive (see table 3). 3.5.1 void: A smooth-surfaced internal cavity con- sidered undesirable when greater than 10 % of the Cross-se
...