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1、BRITISH STANDARD BS EN ISO 294-3:2003 Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates The European Standard EN ISO 294-3:2003 has the status of a British Standard ICS 83.080.20 ? Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2
2、006, Uncontrolled Copy, (c) BSI BS EN ISO 294-3:2003 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 7 August 2003 BSI 7 August 2003 ISBN 0 580 42401 4 National foreword This British Standard is the official English language version of EN ISO
3、 294-3:2003. It is identical with ISO 294-3:2002. It supersedes BS EN ISO 294-3:1998 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee PRI/21, Plastics test methods, which has the responsibility to: A list of organizations represented on this committee
4、can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search
5、” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obli
6、gations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary
7、of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 8, the annex ZA page and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issue
8、d. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 294-3 July 2003 ICS 83.080.20Supersedes EN ISO 294-3:1998 English version P
9、lastics - Injection moulding of test specimens of thermoplastic materials - Part 3: Small plates (ISO 294-3:2002) Plastiques - Moulage par injection des prouvettes de matriaux thermoplastiques - Partie 3: Plaques de petites dimensions (ISO 294-3:2002) Kunststoffe - Spritzgieen von Probekrpern aus Th
10、ermoplasten - Teil 3: Kleine Platten (ISO 294-3:2002) This European Standard was approved by CEN on 26 June 2003. 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 a
11、lteration. Up-to-date lists and bibliographical references concerning such national standards 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 tran
12、slation under the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, I
13、reland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of
14、exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 294-3:2003 E Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI I NESO 92-4:302( 30E) 2 Foreword The text of ISO 294-3:2002 has been prepared
15、 by Technical Committee ISO/TC 6 “Plastics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 294-3:2003 by Technical Committee CEN/TC 249 “Plastics“, the secretariat of which is held by IBN. This European Standard shall be given the status of a national s
16、tandard, either by publication of an identical text or by endorsement, at the latest by January 2004, and conflicting national standards shall be withdrawn at the latest by January 2004. This document supersedes EN ISO 294-3:1998. According to the CEN/CENELEC Internal Regulations, the national stand
17、ards organizations of the following countries 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 U
18、nited Kingdom. Endorsement notice The text of ISO 294-3:2002 has been approved by CEN as EN ISO 294-3:2003 without any modifications. NOTE Normative references to International Standards are listed in Annex ZA (normative). EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38
19、:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI Reference number ISO 294-3:2002(E) OSI 2002 INTERNATIONAL STANDARD ISO 294-3 Second edition 2002-06-01 Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates Plastiques Moulage par injection des prouvettes de matri
20、aux thermoplastiques Partie 3: Plaques de petites dimensions EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-492 O3:(2002)E lcsid FDParemi ihTs PDF file mc yatnoaie nmt deddebyfepca.se Icca ncnadrow eitA hebods licsneilop
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25、 1 11 xaF0 947 22 14 + 9 74 E-mial coirypthgis.oc h Web ww.wiso.ch ii ISO 2002 Allr ithgsr esedevr EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-492 O3:(2002)E I SO 2002 All irthgs ersedevr iii Contents Page Foreword.iv
26、 1 Scope1 2 Normative references1 3 Terms and definitions .1 4 Apparatus.2 5 Procedure.4 6 Report on test-specimen preparation5 Annex A (informative) Weld lines 6 Bibliography8 EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI
27、 IS-492 O3:(2002)E I SO 2002 All irthgs ersedevr iv 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. Ea
28、ch 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 Internatio
29、nal 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 3. The main task of technical committees is to prepare International Standards. Draft International Standar
30、ds 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 part of ISO 294 may be the s
31、ubject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 294-3 was prepared by Technical Committee ISO/TC 61, Plastics, Subcommittee SC 9, Thermoplastic materials. This second edition cancels and replaces the first edition (ISO 294-3:1996), which
32、has been technically revised. ISO 294 consists of the following parts, under the general title Plastics Injection moulding of test specimens of thermoplastic materials: Part 1: General principles, and moulding of multipurpose and bar test specimens Part 2: Small tensile bars Part 3: Small plates Par
33、t 4: Determination of moulding shrinkage Part 5: Preparation of standard specimens for investigating anisotropy Annex A of this part of ISO 294 is for information only. EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI INTENRA
34、TIONAL TSANDADR IS-492 O3:(2002)E I SO 2002 All irthgs ersedevr 1 Plastics Injection moulding of test specimens of thermoplastic materials Part 3: Small plates 1 Scope This part of ISO 294 specifies two two-cavity moulds, the type D1 and D2 ISO moulds, for the injection moulding of small plates meas
35、uring 60 mm 60 mm with a preferred thickness of 1 mm (type D1) or 2 mm (type D2), which can be used for a variety of tests. The moulds may additionally be fitted with inserts for studying the effects of weld lines on the mechanical properties (see annex A). 2 Normative references The following norma
36、tive documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 294. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 294 are encouraged
37、 to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 294-1:1
38、996, Plastics Injection moulding of test specimens of thermoplastic materials Part 1: General principles, and moulding of multipurpose and bar test specimens ISO 294-4:2001, Plastics Injection moulding of test specimens of thermoplastic materials Part 4: Determination of moulding shrinkage ISO 6603-
39、1:2000, Plastics Determination of puncture impact behaviour of rigid plastics Part 1: Non- instrumented impact testing ISO 6603-2:2000, Plastics Determination of puncture impact behaviour of rigid plastics Part 2: Instrumented impact testing 3 Terms and definitions For the purposes of this part of I
40、SO 294, the terms and definitions given in ISO 294-1:1996 apply. EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-492 O3:(2002)E 2 I SO 2002 All irthgs ersedevr 4 Apparatus 4.1 Type D1 and D2 ISO moulds Type D1 and D2 ISO
41、moulds are two-cavity moulds (see Figure 1) intended for the preparation of plates measuring 60 mm 60 mm. The plates produced using these moulds shall have the dimensions shown in Figure 2 and given in Table 1. The main constructional details of type D1 and D2 ISO moulds shall be as shown in Figures
42、 1 and 2 and shall meet the following requirements: a) See ISO 294-1:1996, subclause 4.1.1.4, item a). b) Not applicable. c) See ISO 294-1:1996, subclause 4.1.1.4, item c). d) and e) Not applicable. f) See ISO 294-1:1996, subclause 4.1.1.4, item f). g) See ISO 294-1:1996, subclause 4.1.1.4, item g),
43、 but with reference to ISO 6603. The main dimensions, in millimetres, of the cavities shall be as follows (see also Figure 2): length: 60 to 62; width: 60 to 62; depth: type D2 mould 2,0 to 2,1 type D1 mould 1,0 to 1,1. h) to j) See ISO 294-1:1996, subclause 4.1.1.4, items h) to j). k) Figure 2 show
44、s the position of a pressure sensor P within the cavity, which is mandatory for the measurement of moulding shrinkage only (see ISO 294-4). It may be useful, however, in controlling the injection period with any ISO mould see ISO 294-1:1996, subclause 4.1.1.4, item k). The pressure sensor shall be f
45、lush with the cavity surface in order to avoid interference of the melt flow. I) to n) See ISO 294-1:1996, subclause 4.1.1.4, items l) to n). NOTE 1 Gates which are severely limited in height have a great influence on the orientation of the material within the cavity, even at large distances from th
46、e gate. The change in height at the gate has therefore been fixed at a value which facilitates subsequent measurement of the moulding shrinkage (see ISO 294-4). NOTE 2 The height and length of the gate strongly influence the process of solidification of the melt as it flows into the cavity, and henc
47、e the moulding shrinkage (see ISO 294-4). The dimensions of the gate are therefore defined with tight tolerances. NOTE 3 The value specified for the gate length lG allows the two test specimens to be cut from the runners with a fixed distance lC between the cuts (see Figure 1), even when the mouldin
48、g shrinkage varies from one material to another. NOTE 4 The distance lC between the lines along which the test specimens are cut from the runners (see Figure 1) is given by lC = 2(lG + lR + l*) (see Figure 2). Taking this distance as 80 mm gives the advantage that the same cutting machine can be use
49、d to cut 80 mm 10 mm 4 mm bars from the central sections of multipurpose test specimens see ISO 294-1:1996, subclause 4.1.1.4, item l). EN ISO 2943:2003 Licensed Copy: sheffieldun sheffieldun, na, Mon Nov 20 02:38:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI IS-492 O3:(2002)E I SO 2002 All irthgs ersedevr 3 Key Sp Sprue G Gate lC is the distance between the lines along which the test sp