SIST EN ISO 2818:2019
(Main)Plastics - Preparation of test specimens by machining (ISO 2818:2018)
Plastics - Preparation of test specimens by machining (ISO 2818:2018)
This document establishes the general principles and procedures to be followed when machining and
notching test specimens from compression-moulded and injection-moulded plastics, extruded sheets,
plates and partially finished or wholly finished products.
In order to establish a basis for reproducible machining and notching conditions, the following general
standardized conditions are applied. It is assumed, however, that the exact procedures used are selected
or specified by the relevant material specification or by the standards on the particular test methods. If
sufficiently detailed procedures are not thus specified, the interested parties agree upon the conditions
to be used.
Kunststoffe - Herstellung von Probekörpern durch mechanische Bearbeitung (ISO 2818:2018)
Dieses Dokument legt die allgemeinen Grundsätze und Verfahren fest, die zu befolgen sind, wenn durch mechanische und zerteilende Bearbeitung von aus durch Formpressen und Spritzgießen gefertigten Kunst¬stoffen, extrudierten Tafeln, Platten sowie Halbfertig oder Fertigerzeugnissen Probekörper hergestellt werden.
Um eine Grundlage für reproduzierbare Bedingungen für die mechanische und zerteilende Bearbeitung zu schaffen, werden die folgenden allgemeinen genormten Bedingungen angewendet. Es wird jedoch davon ausgegangen, dass die genauen angewendeten Verfahren anhand der entsprechenden Werkstoff-Spezifikation oder Normen zu den bestimmten Prüfverfahren ausgewählt oder festgelegt werden. Wenn keine ausreichend detaillierten Verfahren auf diese Weise festgelegt sind, vereinbaren die interessierten Parteien die anzuwendenden Bedingungen.
Plastiques - Préparation des éprouvettes par usinage (ISO 2818:2018)
Le présent document établit les principes et modes opératoires généraux à suivre lors de l'usinage et de la production des entailles sur les éprouvettes produites à partir de plastiques moulés par compression et par injection, de feuilles extrudées, de plaques, et de produits partiellement ou entièrement finis.
Il convient d'appliquer les conditions normalisées générales suivantes pour établir une base permettant d'obtenir des conditions reproductibles en matière d'usinage et de production d'entailles. On présume, cependant, que les modes opératoires exacts à utiliser sont choisis ou précisés dans les spécifications relatives à la matière concernée ou dans les normes afférentes aux méthodes d'essai particulières. Si les modes opératoires spécifiés ne sont pas suffisamment détaillés, il est essentiel que les parties concernées s'accordent sur les conditions à utiliser.
Polimerni materiali - Strojna priprava preskušancev (ISO 2818:2018)
Ta dokument določa splošna načela in postopke pri strojni obdelavi in
izrezovanju preskušancev iz polimernih materialov, oblikovane z vbrizgavanjem ali stiskanjem, ekstrudiranih plošč,
lamel in nedokončanih ali končnih izdelkov.
Za vzpostavitev podlage za ponovljive pogoje strojne obdelave in izrezovanja se uporabljajo naslednji splošni
standardizirani pogoji. Kljub temu se predpostavlja, da so uporabljeni postopki izbrani
ali določeni z ustrezno specifikacijo materiala ali s standardi za posamezno preskusno metodo. Če
na ta način niso določeni dovolj podrobni postopki, se zainteresirane strani dogovorijo o pogojih
uporabe.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN ISO 2818:2019
01-marec-2019
1DGRPHãþD
SIST EN ISO 2818:2000
Polimerni materiali - Strojna priprava preskušancev (ISO 2818:2018)
Plastics - Preparation of test specimens by machining (ISO 2818:2018)
Kunststoffe - Herstellung von Probekörpern durch mechanische Bearbeitung (ISO
2818:2018)
Plastiques - Préparation des éprouvettes par usinage (ISO 2818:2018)
Ta slovenski standard je istoveten z: EN ISO 2818:2019
ICS:
83.080.01 Polimerni materiali na Plastics in general
splošno
SIST EN ISO 2818:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN ISO 2818:2019
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SIST EN ISO 2818:2019
EN ISO 2818
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2019
EUROPÄISCHE NORM
ICS 83.080.01 Supersedes EN ISO 2818:1996
English Version
Plastics - Preparation of test specimens by machining (ISO
2818:2018)
Plastiques - Préparation des éprouvettes par usinage Kunststoffe - Herstellung von Probekörpern durch
(ISO 2818:2018) mechanische Bearbeitung (ISO 2818:2018)
This European Standard was approved by CEN on 24 December 2018.
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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2818:2019 E
worldwide for CEN national Members.
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SIST EN ISO 2818:2019
EN ISO 2818:2019 (E)
Contents Page
European foreword . 3
2
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SIST EN ISO 2818:2019
EN ISO 2818:2019 (E)
European foreword
This document (EN ISO 2818:2019) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by NBN.
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 July 2019, and conflicting national standards shall be
withdrawn at the latest by July 2019.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2818:1996.
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, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2818:2018 has been approved by CEN as EN ISO 2818:2019 without any modification.
3
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SIST EN ISO 2818:2019
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SIST EN ISO 2818:2019
INTERNATIONAL ISO
STANDARD 2818
Fourth edition
2018-12
Plastics — Preparation of test
specimens by machining
Plastiques — Préparation des éprouvettes par usinage
Reference number
ISO 2818:2018(E)
©
ISO 2018
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SIST EN ISO 2818:2019
ISO 2818:2018(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, 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 the requester.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2018 – All rights reserved
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SIST EN ISO 2818:2019
ISO 2818:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Test specimens. 5
4.1 Shape and state of the test specimens . 5
4.2 Preparation of test specimens . 6
5 Machinery and tools . 6
5.1 General . 6
5.2 Milling cutters . 6
5.3 Slicing or sawing machines . 6
5.4 Tubular cutting machines . 6
5.5 Lathes . 7
5.6 Planing machines . 7
5.7 Stamping tools . 7
5.8 Broaching tools . 7
6 Procedure. 7
6.1 General . 7
6.2 Preparation of dumb-bell specimens . 7
6.3 Preparation of rectangular test specimens by sawing or cutting with an abrasive disc . 7
6.4 Preparation of disc-shaped test specimens . 7
6.5 Stamping out test specimens of any shape . 8
6.6 Notching finished test specimens by milling or broaching . 8
7 Test report . 9
Bibliography .16
© ISO 2018 – All rights reserved iii
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SIST EN ISO 2818:2019
ISO 2818:2018(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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9,
Mechanical properties.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
This fourth edition cancels and replaces the third edition (ISO 2818:1994), of which it constitutes a
minor revision to update the references in Clause 2. It also incorporates the Technical Corrigendum
ISO 2818:1994/Cor 1:2007.
iv © ISO 2018 – All rights reserved
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SIST EN ISO 2818:2019
ISO 2818:2018(E)
Introduction
The preparation of test specimens by machining influences the finished surfaces and, in some cases,
even the internal structure of the specimens. Since test results are strongly dependent on both of these
parameters, exact definitions of tools and machining conditions are required for reproducible test
results with machined specimens.
© ISO 2018 – All rights reserved v
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SIST EN ISO 2818:2019
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SIST EN ISO 2818:2019
INTERNATIONAL STANDARD ISO 2818:2018(E)
Plastics — Preparation of test specimens by machining
1 Scope
This document establishes the general principles and procedures to be followed when machining and
notching test specimens from compression-moulded and injection-moulded plastics, extruded sheets,
plates and partially finished or wholly finished products.
In order to establish a basis for reproducible machining and notching conditions, the following general
standardized conditions are applied. It is assumed, however, that the exact procedures used are selected
or specified by the relevant material specification or by the standards on the particular test methods. If
sufficiently detailed procedures are not thus specified, the interested parties agree upon the conditions
to be used.
2 Normative references
There are no normative references in this document.
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https: //www .iso .org/obp
— IEC Electropedia: available at http: //www .electropedia .org/
3.1 Milling
NOTE In this machining operation, the tool has a circular primary motion and the workpiece a suitable feed
motion. The axis of rotation of the primary motion retains its position with respect to the tool, independently
of the feed motion (see ISO 3855). Complete dumb-bell and rectangular test specimens, as well as notches in
finished specimens, may be prepared by milling.
3.1.1 Geometry (see ISO 3002-1 and Figure 1)
NOTE Only a few details of the exact geometrical conditions of the milling tool and its position with respect
to the workpiece given in ISO 3002-1 are relevant to this document.
3.1.1.1
tool-cutting-edge angle
α
r
angle between the tool-cutting-edge plane, P , and the assumed working plane, P , measured in the tool
s f
back plane, P
r
3.1.1.2
tool back clearance
α
p
angle between the flank, A , of the cutter and the tool-cutting-edge plane, P , measured in the tool back
α s
plane, P
p
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SIST EN ISO 2818:2019
ISO 2818:2018(E)
3.1.1.3
tool side clearance
α
f
angle between the flank A of the cutter and the tool-cutting-edge plane P , measured in the assumed
α s
working plane, P
f
3.1.1.4
tool radius
R
distance between the axis of the circular primary motion of the tool and its cutting edge
3.1.1.5
number of cutting teeth
z
number of cutting edges on the outer periphery of the rotating milling tool
3.1.2 Tool and workpiece motions (see ISO 3002-1 and Figure 2)
3.1.2.1
rotational speed of tool
n
speed of the circular primary motion of the tool
Note 1 to entry: The rotational speed of tool is expressed in revolutions per minute (r/min).
3.1.2.2
cutting speed
v
c
instantaneous velocity of the primary motion of a selected point on the cutting edge relative to the
workpiece
Note 1 to entry: The relationship between v and n is given by the formula v = n·2πR.
c c
Note 2 to entry: The cutting speed is expressed in metres per minute.
3.1.2.3
feed speed
v
f
instantaneous velocity of the feed motion of a selected point on the cutting edge relative to the
workpiece
Note 1 to entry: The feed speed is expressed in metres per minute.
3.1.2.4
feed path
λ
distance at any given point on the surface of the workpiece covered during the time between two
successive cutting operations
Note 1 to entry: The feed path is given by the formula λ = v /z·n.
f
Note 2 to entry: The feed path is expressed in millimetres.
3.1.2.5
cutting depth
a
distance between the surfaces of the workpiece before and after one complete milling run
Note 1 to entry: The cutting depth is expressed in millimetres.
2 © ISO 2018 – All rights reserved
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SIST EN ISO 2818:2019
ISO 2818:2018(E)
3.2 Cutting of rectangular test specimens
NOTE In this machining operation, rectangular test specimens are cut by means of a circular or band saw,
made from hardened steel or coated with diamond or cubic boron nitride powder, or cut with the aid of an
abrasive disc of which the cutting edge may be coated with diamond or boron nitride powder. For further details
on abrasive discs and abrasive products, see ISO 21950 and ISO 6104.
3.2.1 Geometry
3.2.1.1
tool radius
R
distance between the rotary axis of a circular saw or an abrasive disc and the cutting edges of the tool
Note 1 to entry: The tool radius is expressed in millimetres.
3.2.1.2
number of cutting teeth
z
number of cutting teeth on the periphery of a circular saw
3.2.2 Tool and workpiece motions
3.2.2.1
rotational speed of tool
n
speed of rotation of a circular saw or an abrasive disc
Note 1 to entry: Rotational speed of tool is expressed in revolutions per minute (r/min).
3.2.2.2
cutting speed
v
c
instantaneous velocity of the cutting tip of a saw tooth, or of a selected point on the cutting edge of an
abrasive disc, relative to the workpiece
Note 1 to entry: For a circular saw or an abrasive disc, the relationship between v and n is given by the formula
c
v = n·2πR.
c
Note 2 to entry: The cutting speed is expressed in metres per minute.
3.2.2.3
feed speed
v
f
instantaneous velocity of the tool feed parallel to the saw or disc plane and perpendicular to the cutting
direction relative to the workpiece
Note 1 to entry: The feed speed is expressed in metres per minute.
3.3 Cutting of disc-shaped test specimens (see Figure 4)
NOTE In this machining operation, disc-shaped test specimens are cut from sheet material with the aid
of a circular cutter with a saw-toothed edge of hardened steel or which may be coated with diamond or cubic
boron nitride powder. The test specimens may also be cut by means of a milling cutter with one or more teeth, as
described in 3.1, which moves in a circular orbit. Furthermore, the test specimens may also be cut from a roughly
preshaped pack of individual sheets with the aid of a turning lathe.
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SIST EN ISO 2818:2019
ISO 2818:2018(E)
3.3.1 Geometry
3.3.1.1
tool radius
R
distance between the rotary axis of the circular cutter and the inner limit of the cutting edge
Note 1 to entry: The tool radius is equal to the radius of the finished test specimen. It is expressed in millimetres.
3.3.1.2
number of cutting teeth
z
number of teeth on the sawtooth cutting edge of a circular cutter
Note 1 to entry: If a lathe is used for cutting circular test specimens, the geometrical definitions of the cutting
tool are the same as those given in 3.1.
3.3.2 Tool and workpiece motions
3.3.2.1
rotational sp
...
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