Monolithic (unshaped) refractory products - Part 7: Tests on pre-formed shapes (ISO 1927-7:2012)

ISO 1927-7:2012 specifies methods for the testing of as-delivered pre-formed shapes. It applies to shapes fabricated from dense and insulating castables and ramming materials as defined in ISO 1927-1.

Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 7: Prüfungen an Fertigteilen (ISO 1927-7:2012)

Dieser Teil der ISO 1927 legt Verfahren für die Prüfung von Fertigteilen im Anlieferungszustand fest. Sie gilt für Fertigteile aus dichten und wärmedämmenden Feuerbetonen sowie Rammmassen, wie sie in ISO 1927 1 festgelegt sind.
ANMERKUNG   Abnahmewerte für die beschriebenen Einzelprüfverfahren sollten zwischen den Vertragspartnern vereinbart werden.

Produits réfractaires monolithiques (non façonnés) - Partie 7: Essais sur pièces pré-formées (ISO 1927-7:2012)

L'ISO 1927-7:2012 spécifie les méthodes d'essai des pièces pré-formées dans leur état de livraison. Elle s'applique aux produits fabriqués à partir de bétons denses et isolants et de matériaux moulables, tels que définis dans l'ISO 1927-1.

Neoblikovani ognjevzdržni izdelki - 7. del: Preskusi predhodno izdelanih oblikovancev (ISO 1927-7:2012)

Ta del standarda ISO 1927 določa metode za preskušanje predhodno izdelanih oblikovancev, ki so takšni kot ob dobavi. Uporablja se za oblikovance, izdelane iz zgoščenih in izolacijskih betonov ter mašilnih materialov, kot je opredeljeno v standardu ISO 1927-1. OPOMBA: O vrednostih sprejemljivosti za navedene posamezne preskusne metode se morata dogovoriti vključeni strani.

General Information

Status
Published
Publication Date
30-Nov-2012
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
01-Dec-2012
Completion Date
01-Dec-2012

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SLOVENSKI STANDARD
SIST EN ISO 1927-7:2013
01-maj-2013
1DGRPHãþD
SIST EN 1402-7:2004
Neoblikovani ognjevzdržni izdelki - 7. del: Preskusi predhodno izdelanih
oblikovancev (ISO 1927-7:2012)

Unshaped refractory materials - Part 7: Tests on pre-formed shapes (ISO 1927-7:2012)

Ungeformte feuerfeste Erzeugnisse - Teil 7: Prüfungen an Fertigteilen (ISO 1927-7:2012)

Produits réfractaires non façonnés - Partie 7: Essais sur pièces pré-formées (ISO 1927-

7:2012)
Ta slovenski standard je istoveten z: EN ISO 1927-7:2012
ICS:
81.080 Ognjevzdržni materiali Refractories
SIST EN ISO 1927-7:2013 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 1927-7:2013
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SIST EN ISO 1927-7:2013
EUROPEAN STANDARD
EN ISO 1927-7
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2012
ICS 81.080 Supersedes EN 1402-7:2003
English Version
Monolithic (unshaped) refractory products - Part 7: Tests on pre-
formed shapes (ISO 1927-7:2012)

Produits réfractaires monolithiques (non façonnés) - Partie Ungeformte (monolithische) feuerfeste Erzeugnisse - Teil 7:

7: Essais sur pièces pré-formées (ISO 1927-7:2012) Prüfungen an Fertigteilen (ISO 1927-7:2012)

This European Standard was approved by CEN on 30 November 2012.

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 references concerning such national

standards may be obtained on application to the CEN-CENELEC 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 translation

under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same

status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1927-7:2012: E

worldwide for CEN national Members.
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SIST EN ISO 1927-7:2013
EN ISO 1927-7:2012 (E)
Contents Page

Foreword ....................................................................................................................................................... 3

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SIST EN ISO 1927-7:2013
EN ISO 1927-7:2012 (E)
Foreword

This document (EN ISO 1927-7:2012) has been prepared by Technical Committee ISO/TC 33 "Refractories"

in collaboration with Technical Committee CEN/TC 187 “Refractory products and 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 or by endorsement, at the latest by June 2013, and conflicting national standards shall be withdrawn at

the latest by June 2013.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN 1402-7:2003.

According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 1927-7:2012 has been approved by CEN as a EN ISO 1927-7:2012 without any modification.

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SIST EN ISO 1927-7:2013
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SIST EN ISO 1927-7:2013
INTERNATIONAL ISO
STANDARD 1927-7
First edition
2012-12-01
Monolithic (unshaped) refractory
products —
Part 7:
Tests on pre-formed shapes
Produits réfractaires monolithiques (non façonnés) —
Partie 7: Essais sur pièces pré-formées
Reference number
ISO 1927-7:2012(E)
ISO 2012
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any

means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the

address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Principle ........................................................................................................................................................................................................................ 4

5 Apparatus ..................................................................................................................................................................................................................... 4

6 Inspection by attributes ................................................................................................................................................................................ 6

6.1 Preparation of the test piece ....................................................................................................................................................... 6

6.2 Measurement of dimensions ....................................................................................................................................................... 6

6.3 Measurement of angles .................................................................................................................................................................... 6

6.4 Measurement of warpage .............................................................................................................................................................. 7

6.5 Measurement of corner defects ................................................................................................................................................ 8

6.6 Measurement of edge defects ..................................................................................................................................................... 9

6.7 Measurement of craters and bubbles ...............................................................................................................................10

6.8 Measurement of cracks .................................................................................................................................................................11

6.9 Measurement of protrusions and indentations .......................................................................................................11

6.10 Measurement of fins ........................................................................................................................................................................12

6.11 Segregations ...........................................................................................................................................................................................12

6.12 Friability ....................................................................................................................................................................................................12

7 Inspection by variables ...............................................................................................................................................................................12

7.1 Destructive test methods ............................................................................................................................................................12

7.2 Non-destructive test methods ................................................................................................................................................14

8 Test report ................................................................................................................................................................................................................19

Bibliography .............................................................................................................................................................................................................................21

© ISO 2012 – All rights reserved iii
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(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. Each 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 part in the work.

ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of

electrotechnical standardization.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of technical committees is to prepare International Standards. Draft International

Standards adopted by the technical committees are circulated to the member bodies for voting.

Publication as an International Standard requires approval by at least 75 % of the member bodies

casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights.

ISO 1927-7 was prepared by Technical Committee ISO/TC 33, Refractories.

ISO 1927 consists of the following parts, under the general title Monolithic (unshaped) refractory products:

— Part 1: Introduction and classification
— Part 2: Sampling for testing
— Part 3: Characterization as received
— Part 4: Determination of consistency of castables
— Part 5: Preparation and treatment of test pieces
— Part 6: Measurement of physical properties
— Part 7: Tests on pre-formed shapes
— Part 8: Determination of complementary properties
iv © ISO 2012 – All rights reserved
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SIST EN ISO 1927-7:2013
INTERNATIONAL STANDARD ISO 1927-7:2012(E)
Monolithic (unshaped) refractory products —
Part 7:
Tests on pre-formed shapes
1 Scope

This part of ISO 1927 specifies methods for the testing of as-delivered pre-formed shapes. It applies to

shapes fabricated from dense and insulating castables and ramming materials as defined in ISO 1927-1.

NOTE Acceptance values for the individual test methods described should be agreed between the parties

involved.
2 Normative references

The following referenced documents are indispensable for the application of this document. For dated

references, only the edition cited applies. For undated references, the latest edition of the referenced

document (including any amendments) applies.

ISO 1927-1, Monolithic (unshaped) refractory products – Part 1 Introduction and classification

ISO 1927-6, Monolithic (unshaped) refractory products — Part 6: Measurement of physical properties

3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
corner defect

missing corner, defined by the three dimensions a, b and c as indicated in Figure 1

© ISO 2012 – All rights reserved 1
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
Key
a, b and c Three dimensions defining the missing corner
Figure 1 — Typical corner defect
3.2
edge defect

missing edge, defined by the three dimensions, e, f, and g as indicated in Figure 2

Key
e, f, and g Three dimensions defining the missing edge
Figure 2 — Typical edge defect
3.3
crater

clearly defined hole in the surface of a shape whose parameters, i.e. maximum diameter, minimum

diameter and depth, can be measured
NOTE Its origin can be a bubble produced during manufacture.
2 © ISO 2012 – All rights reserved
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
3.4
hairline cracks
fine cracks visible on the surface of a shape whose length can be
measured and whose width is less than or equal to 0,2 mm, see Figure 3
Key
1 Hairline crack
2 Surface crazing
3 Open cracks
Figure 3 — Typical cracks
3.5
surface crazing
network of hairline cracks confined to the surface of the shape, see Figure 3
3.6
open cracks

cracks or tears on the surface whose length is more than 10 mm and whose width is more than 0,2 mm

See Figure 3.
3.7
protrusions and indentations
imperfections that can occur during fabrication or firing, if applicable
3.8
fins
thin layer of material on the face of a shape that projects beyond the edge
3.9
segregation

separation of aggregate and fines during fabrication to leave a honeycomb appearance and/or a layer

of excess fines
3.10
friability
crumbly texture due to poor consolidation and/or mould leakage
3.11
warpage
deviation of a plane surface from being flat
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
4 Principle

Testing 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 or other surface defects and by conformance to dimensional tolerances;

b) Inspection by variables by evaluating the quality of a refractory shape by determining physical

properties using appropriate destructive or non-destructive test methods.

NOTE It is not obligatory to use all the test methods described in this part of ISO 1927 when determining the

quality of a pre-formed shape.
5 Apparatus

5.1 Linear measuring devices, steel tape and/or callipers in accordance with the tolerance required

and conforming to an accuracy that is twice the intended accuracy of the measurement.

NOTE Where possible, linear tolerances less than 1 mm should be measured with callipers. Steel tape

measurements are accurate to the millimetre (0,5 mm can be estimated) whereas callipers are accurate to 0,1 mm.

5.2 Steel straightedge, at least 5 mm thick and of sufficient length to span the diagonal of the largest

shape to be measured.
5.3 Two 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 at least 10 mm from that end and then tapering to zero thickness at the other end (see for

example Figure 4a), or

b) 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 base and the slope in increments of either 0,5 mm (type 1) or 0,1 mm (type 2).

Dimensions in millimetres
a) Type 1
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
b) Type 2
Figure 4 — Two types of measuring wedge

5.4 Graticule, with 0,1 mm graduations and/or feeler gauges of an appropriate size and accuracy

to be used for the measurement of crack width. If necessary, the gauges can be replaced by measuring

wedges of appropriate accuracy.
5.5 Sliding bevel, for the measurement of angles.

5.6 Depth gauge calibrated in millimetres of depth, having a probe of 3 mm diameter.

5.7 Breakage defect sizer, with a slot uncovering 2 mm on both surfaces, for determination of

minimum defect sizes for corner and edge defects, according to Figure 5.

NOTE 1 One 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 edge defects (see 6.6).

NOTE 2 A breakage defect sizer permits an objective definition of the point of departure for the measurement

of the size of a broken edge.
Dimensions in millimetres
100
Figure 5 — Breakage defect sizer
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SIST EN ISO 1927-7:2013
ISO 1927-7:2012(E)
5.8 Balance, capable of measuring to an accuracy of 1 %.
5.9 Ultrasonic pulse velocity measuring equipment.
5.10 Equipment for determining the resonant frequency by mechanical shock.
5.11 Rebound hammer.
5.12 Drying oven, capable of being controlled at 110 °C ± 5 °C.
5.13 Furnace, capable of operating at 1 050 °C ± 25 °C.
6 Inspection by attributes
6.1 Preparation of the test piece

The definition of edges may be improved, after any protrusions or indentations have been measu

...

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