EN 993-20:2004

Methods of test for dense shaped refractory products - Part 20: Determination of resistance to abrasion at ambient temperature

This European Standard describes a method for the determination of the abrasion resistance of shaped refractory materials at ambient temperature. It provides an indication of its suitability for service in abrasive or erosive conditions.  It can also be used for unshaped refractory materials.

Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 20: Bestimmung der Beständigkeit gegen Abrieb bei Raumtemperatur

Diese Europäische Norm legt ein Verfahren für die Bestimmung der Beständigkeit gegen Abrieb von geformten und ungeformten feuerfesten Werkstoffen bei Raumtemperatur fest. Sie gibt Hinweise für deren Eignung beim Einsatz unter Bedingungen von Abrieb und Erosion.

Méthodes d'essai des produits réfractaires façonnés denses - Partie 20: Détermination de la résistance à l'abrasion à température ambiante

La présente Norme européenne définit une méthode de détermination de la résistance à l'abrasion des matériaux réfractaires façonnés et non façonnés à température ambiante. Elle fournit une indication quant à leur aptitude à être utilisés dans des conditions abrasives ou érosives.

Metode preskušanja gostih oblikovanih ognjevzdržnih izdelkov – 20. del: Ugotavljanje odpornosti proti obrabi pri sobni temperaturi

General Information

• Status: Withdrawn
• Publication Date: 25-May-2004
• Withdrawal Date: 06-May-2008
• ICS: 81.080 - Refractories
• Technical Committee: CEN/TC 187 - Refractory products and materials
• Drafting Committee: CEN/TC 187/WG 1 - Dense shaped refractory products
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 07-May-2008
• Completion Date: 07-May-2008
• Ref Project: SIST EN 993-20:2004 - Methods of test for dense shaped refractory products - Part 20: Determination of resistance to abrasion at ambient temperature

Relations

• Replaced By: EN ISO 16282:2008 - Methods of test for dense shaped refractory products - Determination of resistance to abrasion at ambient temperature (ISO 16282:2007)
• Effective Date: 22-Dec-2008

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2004
Metode preskušanja gostih oblikovanih ognjevzdržnih izdelkov – 20. del:
Ugotavljanje odpornosti proti obrabi pri sobni temperaturi
Methods of test for dense shaped refractory products - Part 20: Determination of
resistance to abrasion at ambient temperature
Prüfverfahren für dichte geformte feuerfeste Erzeugnisse - Teil 20: Bestimmung der
Beständigkeit gegen Abrieb bei Raumtemperatur
Méthodes d'essai des produits réfractaires façonnés denses - Partie 20: Détermination
de la résistance a l'abrasion a température ambiante
Ta slovenski standard je istoveten z: EN 993-20:2004
ICS:
81.080 Ognjevzdržni materiali Refractories
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 993-20
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2004
ICS 81.080
English version
Methods of test for dense shaped refractory products - Part 20:
Determination of resistance to abrasion at ambient temperature
Méthodes d'essai des produits réfractaires façonnés Prüfverfahren für dichte geformte feuerfeste Erzeugnisse -
denses - Partie 20: Détermination de la résistance à Teil 20: Bestimmung der Beständigkeit gegen Abrieb bei
l'abrasion à température ambiante Raumtemperatur
This European Standard was approved by CEN on 24 March 2004.
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 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 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
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 993-20:2004: E
worldwide for CEN national Members.

Contents           page
Foreword.3
1 Scope.4
2 Normative references.4
3 Terms and definitions .4
4 Principle.4
5 Apparatus.4
6 Test-pieces.7
7 Procedure.8
8 Calculation.8
9 Test report.9

Foreword
This document (EN 993-20:2004) has been prepared by 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 November 2004, and conflicting national standards shall be withdrawn at the latest
by November 2004.
EN 993 with the general title “Methods of test for dense shaped refractory products” consists of 20 Parts:
Part 1: Determination of bulk density, apparent porosity and true porosity
Part 2: Determination of true density
Part 3: Test methods for carbon-containing refractories
Part 4: Determination of permeability to gases
Part 5: Determination of cold crushing strength
Part 6: Determination of modulus of rupture at ambient temperature
Part 7: Determination of modulus of rupture at elevated temperatures
Part 8: Determination of refractoriness-under-load
Part 9: Determination of creep in compression
Part 10: Determination of permanent change in dimensions on heating
Part 11: Determination of resistance to thermal shock
Part 12: Determination of pyrometric cone equivalent (refractoriness)
Part 13: Specification for pyrometric reference cones for laboratory use
Part 14: Determination of thermal conductivity by the hot-wire (cross-array) method
Part 15: Determination of thermal conductivity by the hot-wire (parallel) method
Part 16: Determination of resistance to sulphuric acid
Part 17: Determination of bulk density of granular materials by the mercury method with vacuum
Part 18: Determination of bulk density of granular materials by the water method with vacuum
Part 19: Determination of thermal expansion by a differential method
Part 20: Determination of resistance to abrasion at ambient temperature
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

Published as a TS with the general title “Dense shaped refractory products”
1 Scope
This European Standard describes a method for the determination of the abrasion resistance of shaped refractory
materials at ambient temperature. It provides an indication of its suitability for service in abrasive or erosive
conditions. It can also be used for unshaped refractory materials.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For
dated references, subsequent amendments to or revisions of any of these publications apply to this European
Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the
publication referred to applies (including amendments).
EN 993-1, Methods of test for dense shaped refractory products - Part 1: Determination of bulk density, apparent
porosity and true porosity.
EN 1402-5, Unshaped refractory products — Part 5: Preparation and treatment of test pieces.
EN 1402-6, Unshaped refractory products — Part 6: Measurement of physical properties.
ISO 565, Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet - Nominal sizes of
openings.
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
resistance to abrasion
resistance of refractory test-pieces to the surface wear caused by the mechanical action of moving solids
3.2
resistance to erosion
resistance of refractory test-pieces to the surface wear caused by the mechanical action of a fluid, whether or not it
contains solid material
4 Principle
Determination of the volume of material abraded from a flat surface of the test-piece placed at a right angle to a
nozzle through which 1000 g of size-graded silicon carbide is blasted by air at 450 kPa.
5 Apparatus
5.1 Abrasion tester
An abrasion tester shall consist of the following equipment (see Figures 1 to 3).
a) Blast gun, (see Figure 1) consisting of a pistol type housing with an air nozzle delivering air into the barrel of
the gun which acts as a venturi with the abrasive medium entering the barrel at the side. The air delivery nozzle
shall have an inlet inside diameter between 2,84 mm and 2,92 mm and an outlet inside diameter between 2,36 mm
and
...