SIST EN 1402-7:2004

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Neoblikovani ognjevzdržni izdelki - 7. del: Preskusi predhodno izdelanih oblikovancevUngeformte feuerfeste Erzeugnisse - Teil 7: Prüfungen an FertigteilenProduits réfractaires non façonnés - Partie 7: Essais sur pieces pré-forméesUnshaped refractory products - Part 7: Tests on pre-formed shapes81.080Ognjevzdržni materialiRefractoriesICS:Ta slovenski standard je istoveten z:EN 1402-7:2003SIST EN 1402-7:2004en01-maj-2004SIST EN 1402-7:2004SLOVENSKI
STANDARDSIST ENV 1402-7:19981DGRPHãþD



SIST EN 1402-7:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1402-7October 2003ICS 81.080Supersedes ENV 1402-7:1998English versionUnshaped refractory materials - Part 7: Tests on pre-formedshapesProduits et matériaux réfractaires - Partie 7: Essais surpièces pré-forméesUngeformte feuerfeste Erzeugnisse - Teil 7: Prüfungen anFertigteilenThis European Standard was approved by CEN on 20 June 2003.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1402-7:2003 ESIST EN 1402-7:2004



EN 1402-7:2003 (E)2ContentspageForeword.31Scope.42Normative references.43Terms and definitions.44Principle.75Apparatus.76Inspection by attributes.96.1Preparation of the test piece.96.2Measurement of dimensions.96.3Measurement of angles.106.4Measurement of warpage.106.5Measurement of corner defects.116.6Measurement of edge defects.126.7Measurement of craters and bubbles.136.8Measurement of cracks.146.9Measurement of protrusions and indentations.156.10Measurement of fins.156.11Segregations.156.12Friability.157Inspection by variables.167.1Destructive test methods.167.1.1General.167.1.2Physical properties.167.1.3Moisture content (see NOTE 2 of 7.1.4).167.1.4Loss on ignition.167.2Non-destructive test methods.177.2.1Ultrasonic testing.177.2.2Determination of the resonant frequency by mechanical shock.197.2.3Rebound hammer.217.2.4Mass.227.2.5Bulk density.228Test report.22Bibliography.24SIST EN 1402-7:2004



EN 1402-7:2003 (E)3ForewordThis document (EN 1402-7:2003) has been prepared by Technical Committee CEN/TC 187 "Refractory productsand materials", the secretariat of which is held by BSI.This European Standard shall be given the status of a national standard, either by publication of an identical text orby endorsement, at the latest by April 2004, and conflicting national standards shall be withdrawn at the latest byApril 2004.This document supersedes ENV 1402-7:1998.EN 1402 “Unshaped refractory products“ consists of eight parts:¾ Part 1Introduction and classification¾ Part 2 Sampling for testing¾ Part 3Characterization as received¾ Part 4 Determination of consistency of castables¾ Part 5Preparation and treatment of test pieces¾ Part 6 Measurement of physical properties¾ Part 7 Tests on pre-formed shapes¾ Part 8 Determination of complementary propertiesAccording to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 1402-7:2004



EN 1402-7:2003 (E)41 ScopeThis European Standard specifies methods for the testing of as-delivered pre-formed shapes. It applies to shapesfabricated from dense and insulating castables and ramming materials as defined in EN 1402-1.NOTEAcceptance values for the individual test methods described should be agreed between the parties involved.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 1402-1, Unshaped refractory products – Part 1 Introduction and classification.EN 1402-6, Unshaped refractory products – Part 6: Measurement of physical properties.3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.3.1corner defectmissing corner, defined by the three dimensions a, b and c as indicated in Figure 1cbaKeya, b and c Three dimensions defining the missing cornerFigure 1 — Typical corner defectSIST EN 1402-7:2004



EN 1402-7:2003 (E)53.2edge defectmissing edge, defined by the three dimensions, e, f, and g as indicated in Figure 2gefKeye, f, and gThree dimensions defining the missing edgeFigure 2 — Typical edge defect3.3craterclearly defined hole in the surface of a shape whose parameters, i.e. maximum diameter, minimum diameter anddepth, can be measuredNOTEIts origin can be a bubble produced during manufacture.3.4hairline cracksfine cracks visible on the surface of a shape whose length can be measured and whose width is less than or equal to0,2 mm (see Figure 3)SIST EN 1402-7:2004



EN 1402-7:2003 (E)6123Key1Hairline crack2Surface crazing3Open cracksFigure 3 — Typical cracks3.5surface crazingnetwork of hairline cracks confined to the surface of the shape (see Figure 3)3.6open crackscracks or tears on the surface whose length is more than 10 mm and whose width is more than 0,2 mm (see Figure 3)3.7protrusions and indentationsimperfections that can occur during fabrication or firing, if applicable3.8finsthin layer of material on the face of a shape that projects beyond the edge3.9segregationseparation of aggregate and fines during fabrication to leave a honeycomb appearance and/or a layer of excess fines3.10friabilitycrumbly texture due to poor consolidation and/or mould leakage3.11warpagedeviation of a plane surface from being flatSIST EN 1402-7:2004



EN 1402-7:2003 (E)74 PrincipleTesting of pre-formed shapes by qualitative and/or quantitative methods. These methods are of two types:a) Inspection by attributes by evaluating the integrity of a refractory shape by visual inspection of cracks orother surface defects and by conformance to dimensional tolerances;b) Inspection by variables by evaluating the quality of a refractory shape by determining physical propertiesusing appropriate destructive or non-destructive test methods.NOTEIt is not obligatory to use all the test methods described in this European Standard when determining the quality of apre-formed shape.5 Apparatus5.1Linear measuring devices, steel tape and/or callipers in accordance with the tolerance required andconforming to an accuracy twice the intended accuracy of the measurement.NOTEWhere possible, linear tolerances less than 1 mm should be measured with callipers. Steel tape measurements areaccurate to the millimetre (0,5 mm can be estimated) whereas callipers are accurate to 0,1 mm.5.2Steel straightedge, at least 5 mm thick and of sufficient length to span the diagonal of the largest shape tobe measured.5.3Two steel measuring wedges, which shall be either:a) type 1, at least 50 mm in length and 10 mm in thickness at one end, of uniform cross section for a length of atleast 10 mm from that end and then tapering to zero thickness at the other end (see for example Figure 4a), orb) type 2, up to 160 mm in length with an even taper from 4 mm to zero (see for example Figure 4b).Each wedge shall be graduated and numbered along the slope to show the thickness of the wedge between the baseand the slope in increments of either 0,5 mm (type 1) or 0,1 mm (type 2).SIST EN 1402-7:2004



EN 1402-7:2003 (E)8Dimensions in millimetres10864250
1010a) Type 140383634323028262422201816141210864 2 10354160b) Type 2Figure 4 — Two types of measuring wedge5.4Graticule, with 0,1 mm graduations and/or feeler gauges of an appropriate size and accuracy to be used forthe measurement of crack width. If necessary, the gauges can be replaced by measuring wedges of appropriateaccuracy.5.5Sliding bevel, for the measurement of angles.5.6Depth gauge calibrated in millimetres of depth, having a probe of 3 mm diameter.SIST EN 1402-7:2004



EN 1402-7:2003 (E)95.7Breakage defect sizer, with a slot uncovering 2 mm on both surfaces, for determination of minimumdefect sizes for corner and edge defects, according to Figure 5.NOTE 1One breakage defect sizer can be used together with a steel straightedge for the measurement of corner defects(see 6.5). Two breakage defect sizers can be used together with a linear measuring device for the measurement of edgedefects (see 6.6).NOTE 2A breakage defect sizer permits an objective definition of the point of departure for the measurement of the size of abroken edge.Dimensions in millimetres3303010030322Figure 5 — Breakage defect sizer5.8Balance, capable of measuring to an accuracy of 1 %.5.9Ultrasonic pulse velocity measuring equipment.5.10Equipment for determining the resonant frequency by mechanical shock.5.11Rebound hammer.5.12Drying oven, capable of being controlled at 110 °C ± 5 °C.5.13Furnace, capable of operating at 1 050 °C ± 5 °C.6 Inspection by attributes6.1 Preparation of the test pieceThe definition of edges may be improved, after any protrusions or indentations have been measured, by removing anyprojections such as fins or protrusions. This can normally be achieved by light abrasion.6.2 Measurement of dimensionsLinear dimensions shall be measured by means of a linear measuring device (see 5.1), and unless otherwise agreed,shall be measured to the nearest 0,5 mm.SIST EN 1402-7:2004



EN 1402-7:2003 (E)106.3 Measurement of anglesAngles shall be measured by adjusting the sliding bevel to fit the shape (see Figure 6) and the angle determined byuse of a protractor (see Figure 7).Figure 6 — Positioning the sliding levelFigure 7 — Measurement of the angle6.4 Measurement of warpageFor a concave surface, place the straightedge on edge across a diagonal of the surface being tested, insert a wedge atthe point of maximum warpage (ensuring that the reading is not affected by raised imperfections on the castablesurface) and record the maximum obtainable reading to the nearest 0,5 mm at the point of contact between the wedgeand the straightedge.For a convex surface, insert a wedge at each end of the straightedge and perpendicular to it as shown in Figure 8.Adjust the wedges, to a position not more than 15 mm from the corner of the shape, so that equal readings areSIST EN 1402-7:2004



EN 1402-7:2003 (E)11obtained
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