EN ISO 6508-2:2015
(Main)Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters (ISO 6508-2:2015)
Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing machines and indenters (ISO 6508-2:2015)
ISO 6508-2:2015 specifies two separate methods of verification of testing machines (direct and indirect) for determining Rockwell hardness in accordance with ISO 6508‑1:2015, together with a method for verifying Rockwell hardness indenters.
The direct verification method is used to determine whether the main parameters associated with the machine function, such as applied force, depth measurement, and testing cycle timing, fall within specified tolerances. The indirect verification method uses a number of calibrated reference hardness blocks to determine how well the machine can measure a material of known hardness.
The indirect method may be used on its own for periodic routine checking of the machine in service.
If a testing machine is also to be used for other methods of hardness testing, it shall be verified independently for each method.
ISO 6508-2:2015 is applicable to stationary and portable hardness testing machines.
Attention is drawn to the fact that the use of tungsten carbide composite for ball indenters is considered to be the standard type of Rockwell indenter ball. Steel indenter balls may continue to be used only when complying with ISO 6508‑1:2015, Annex A.
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 2: Überprüfung und Kalibrierung der Prüfmaschinen und Eindringkörper (ISO 6508-2:2015)
In diesem Teil von ISO 6508 sind zwei unterschiedliche Verfahren für die Überprüfung von Härteprüfmaschinen (direkt und indirekt) zur Bestimmung der Rockwellhärte nach ISO 6508 1 in Verbindung mit einem Verfahren für die Überprüfung von Rockwell-Härteeindringkörpern festgelegt.
Die direkte Überprüfung wird angewendet, um festzustellen, ob die Hauptparameter der Maschinenfunktion, wie z. B. die aufgebrachte Kraft, Eindringtiefenmessung und zeitliche Steuerung der Prüfzyklen, die festgelegten Grenzabweichungen einhalten. Bei der indirekten Überprüfung wird eine Reihe von kalibrierten Härtevergleichsplatten verwendet, um festzustellen, wie gut die Prüfmaschine in der Lage ist einen Werkstoff bekannter Härte zu messen..
Das indirekte Verfahren kann für sich allein zur regelmäßigen Routineüberprüfung der Maschine beim Anwender angewendet werden.
Soll eine Härteprüfmaschine auch für andere Härteprüfverfahren verwendet werden, so muss sie unabhängig für jedes dieser Verfahren überprüft werden.
Dieser Teil von ISO 6508 ist auf ortsfeste und tragbare Härteprüfmaschinen anwendbar.
Es ist zu beachten, dass als Normeindringkugel für die Rockwell-Prüfung nur solche aus Wolframcarbid-Hart-metall gelten. Stahleindringkugeln dürfen nur dann noch verwendet werden, wenn sie ISO 6508 1: , Anhang A entsprechen.
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Vérification et étalonnage des machines d'essai et des pénétrateurs (ISO 6508-2:2015)
L'ISO 6508-2:2015 spécifie deux méthodes séparées de vérification des machines d'essai (directe et indirecte) pour la détermination de la dureté Rockwell conformément à l'ISO 6508‑1:2015, de même qu'une méthode de vérification des pénétrateurs de dureté Rockwell.
La méthode de vérification directe est utilisée pour déterminer si les principaux paramètres associés aux fonctions de la machine, telles que la force appliquée, le mesurage de l'enfoncement et le phasage du cycle d'essai, se situent dans les tolérances spécifiées. La méthode de vérification indirecte utilise un certain nombre de blocs de dureté de référence étalonnés pour déterminer avec quelle exactitude la machine peut mesurer un matériau de dureté connue.
La méthode indirecte peut être utilisée seule pour une vérification périodique de routine de la machine en service.
Si une machine d'essai est également à utiliser pour d'autres méthodes d'essai de dureté, elle doit être vérifiée indépendamment pour chaque méthode.
L'ISO 6508-2:2015 est applicable aux machines d'essai de dureté fixes et portables.
L'attention est attirée sur le fait que l'utilisation d'un composite en carbure de tungstène pour les pénétrateurs à bille est considérée être le type courant de bille de pénétrateur Rockwell. Des billes de pénétrateur en acier peuvent continuer d'être utilisées seulement lorsqu'elles sont conformes à l'Annexe A de l'ISO 6508‑1:2015.
Kovinski materiali - Preskus trdote po Rockwellu - 2. del: Preverjanje in umerjanje naprav za preskušanje (ISO 6508-2:2015)
Ta del standarda ISO 6508 določa dve metodi preverjanja naprav za preskušanje (neposredno in posredno) za določanje trdote po Rockwellu v skladu s standardom ISO 6508-1:2015, skupaj z metodo za preverjanje vtisnih teles za preskušanje trdote po Rockwellu.
Z neposredno metodo preverjanja se ugotavlja, ali so glavni parametri, povezani z delovanjem naprave, kot so uporabljena sila, meritev globine in čas preskusnega ciklusa, znotraj določenih toleranc. Pri posredni metodi preverjanja se uporabi določeno število umerjenih ploščic referenčne trdote, s katerimi se preveri, kako natančno lahko naprava izmeri material z znano trdoto.
Posredni način se lahko uporabi samostojno pri rednem preverjanju naprave med delovanjem. Če se naprava za preskušanje uporablja tudi za druge metode preskusa trdote, jo je treba preveriti posebej za vsako metodo.
Ta del standarda ISO 6508 se uporablja za nepremične in premične naprave za preskušanje trdote. Opozoriti je treba, da se za standardno vrsto vtisne krogle po Rockwellu šteje kroglično vtisno telo iz kompozita volframovega karbida. Jeklene vtisne krogle se lahko še naprej uporabljajo pod pogojem, da so skladne z dodatkom A k standardu ISO 6508-1:2015.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-maj-2015
1DGRPHãþD
SIST EN ISO 6508-2:2006
Kovinski materiali - Preskus trdote po Rockwellu - 2. del: Preverjanje in umerjanje
naprav za preskušanje (ISO 6508-2:2015)
Metallic materials - Rockwell hardness test - Part 2: Verification and calibration of testing
machines and indenters (ISO 6508-2:2015)
Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil 2: Prüfung und Kalibrierung
der Prüfmaschinen und Eindringkörper (ISO 6508-2:2015)
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Vérification et étalonnage
des machines d'essai (ISO 6508-2:2015)
Ta slovenski standard je istoveten z: EN ISO 6508-2:2015
ICS:
77.040.10 Mehansko preskušanje kovin Mechanical testing of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 6508-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2015
ICS 77.040.10 Supersedes EN ISO 6508-2:2005
English Version
Metallic materials - Rockwell hardness test - Part 2: Verification
and calibration of testing machines and indenters (ISO 6508-
2:2015)
Matériaux métalliques - Essai de dureté Rockwell - Partie 2: Metallische Werkstoffe - Härteprüfung nach Rockwell - Teil
Vérification et étalonnage des machines d'essai et des 2: Überprüfung und Kalibrierung der Prüfmaschinen und
pénétrateurs (ISO 6508-2:2015) Eindringkörper (ISO 6508-2:2015)
This European Standard was approved by CEN on 10 January 2015.
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
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6508-2:2015 E
worldwide for CEN national Members.
Contents
Page
Foreword .3
Foreword
This document (EN ISO 6508-2:2015) has been prepared by Technical Committee ISO/TC 164 "Mechanical
testing of metals" in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other
than chemical analysis)” the secretariat of which is held by AFNOR.
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 September 2015, and conflicting national standards shall be
withdrawn at the latest by September 2015.
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 ISO 6508-2:2005.
According to the CEN-CENELEC Internal Regulations, the national standards organizations 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 6508-2:2015 has been approved by CEN as EN ISO 6508-2:2015 without any modification.
INTERNATIONAL ISO
STANDARD 6508-2
Third edition
2015-03-01
Metallic materials — Rockwell
hardness test —
Part 2:
Verification and calibration of testing
machines and indenters
Matériaux métalliques — Essai de dureté Rockwell —
Partie 2: Vérification et étalonnage des machines d’essai et des
pénétrateurs
Reference number
ISO 6508-2:2015(E)
©
ISO 2015
ISO 6508-2:2015(E)
© ISO 2015
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
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Published in Switzerland
ii © ISO 2015 – All rights reserved
ISO 6508-2:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 General conditions . 1
4 Direct verification of the testing machine . 2
4.1 General . 2
4.2 Calibration and verification of the test force. 2
4.3 Calibration and verification of the depth-measuring system . 2
4.4 Calibration and verification of the testing cycle . 3
4.5 Calibration and verification of the machine hysteresis. 3
5 Indirect verification of the testing machine . 4
5.1 General . 4
5.2 Procedure . 4
5.3 Repeatability . 5
5.4 Bias . 6
5.5 Uncertainty of measurement . 7
6 Calibration and verification of Rockwell hardness indenters . 7
6.1 General . 7
6.2 Diamond indenter . 7
6.2.1 General. 7
6.2.2 Direct calibration and verification of the diamond indenter . 7
6.2.3 Indirect verification of diamond indenters . 8
6.3 Ball indenter . 9
6.3.1 Direct calibration and verification of the ball indenter . 9
6.3.2 Indirect verification of the ball holder assembly .11
6.4 Marking .11
7 Intervals between direct and indirect calibrations and verifications .11
8 Verification report .12
Annex A (normative) Repeatability of testing machines .13
Annex B (informative) Uncertainty of measurement of the calibration results of the
hardness testing machine .15
Bibliography .24
ISO 6508-2:2015(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO ISO/TC 164, Mechanical testing of metals,
Subcommittee SC 3, Hardness testing.
This third edition cancels and replaces the first edition (ISO 6508-2:2005), which has been technically
revised.
ISO 6508 consists of the following parts, under the general title Metallic materials — Rockwell hardness
test:
— Part 1: Test method
— Part 2: Verification and calibration of testing machines and Indenters
— Part 3: Calibration of reference blocks
iv © ISO 2015 – All rights reserved
INTERNATIONAL STANDARD ISO 6508-2:2015(E)
Metallic materials — Rockwell hardness test —
Part 2:
Verification and calibration of testing machines and
indenters
1 Sc
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