1、November 2016 English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 81.060.30!%u“2588290www.din.deD
2、IN EN ISO 14629Fine ceramics (advanced ceramics, advanced technical ceramics) Determination of flowability of ceramic powders (ISO 14629:2012);English version EN ISO 14629:2016,English translation of DIN EN ISO 14629:2016-11Hochleistungskeramik Bestimmung der Fliefhigkeit keramischer Pulver (ISO 146
3、29:2012);Englische Fassung EN ISO 14629:2016,Englische bersetzung von DIN EN ISO 14629:2016-11Cramiques techniques Dtermination de laptitude lcoulement des poudres cramiques (ISO 14629:2012);Version anglaise EN ISO 14629:2016,Traduction anglaise de DIN EN ISO 14629:2016-11SupersedesDIN V ENV 14312:2
4、00211www.beuth.deDocument comprises 16 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.16 DIN EN ISO 14629:2016-11 2 A comma is used as the decimal marker. National foreword The text of ISO 14629:2012 has been prepared by Te
5、chnical Committee ISO/TC 206 “Fine ceramics” and has been taken over as EN ISO 14629:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committ
6、ee Materials Testing), Working Committee NA 062-02-91 AA Terminologie von Hochleistungskeramik und Prfung von monolithischen keramischen Werkstoffen und Pulvern. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 565 DIN ISO 565 ISO 690 DI
7、N ISO 690 ISO 4490 DIN EN ISO 4490 ISO 80000-1 DIN EN ISO 80000-1 ISO/IEC 17025 DIN EN ISO/IEC 17025 Amendments This standard differs from DIN V ENV 14312:2002-11 as follows: a) Clause 2 “Normative references” has been added; b) the mass of test portion has been increased from 30 g to 50 g; c) Claus
8、e 4 “Apparatus” has been extended; d) further dimensions have been included in Figure 1 “Example of funnel”; e) Figure 2 “Example of container” has been added; f) ISO 14629:2012 has been adopted. Previous editions DIN V ENV 14312: 2002-11 DIN EN ISO 14629:2016-11 3 National Annex NA (informative) Bi
9、bliography DIN ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of openings DIN ISO 690, Information and documentation Guidelines for bibliographic references and citations to information resources DIN EN ISO 4490, Metallic powders Determination of
10、flow rate by means of a calibrated funnel (Hall flowmeter) DIN EN ISO 80000-1, Quantities and units Part 1: General DIN EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories DIN EN ISO 14629:2016-11 4 This page is intentionally blank EUROPEAN STANDARD NORM
11、E EUROPENNE EUROPISCHE NORM EN ISO 14629 April 2016 ICS 81.060.30 Supersedes ENV 14312:2002English Version Fine ceramics (advanced ceramics, advanced technical ceramics) - Determination of flowability of ceramic powders (ISO 14629:2012) Cramiques techniques - Dtermination de laptitude lcoulement des
12、 poudres cramiques(ISO 14629:2012) Hochleistungskeramik - Bestimmung der Fliefhigkeit keramischer Pulver (ISO 14629:2012) This European Standard was approved by CEN on 18 March 2016. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving t
13、his 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
14、 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 Aus
15、tria, 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, Swed
16、en, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
17、 national Members. Ref. No. EN ISO 14629:2016 E2DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) Contents Page European foreword . 3 Foreword . 4 1 Scope 5 2 Normative references 5 3 Principle 5 4 Apparatus . 5 4.1 Funnel 5 4.2 Container 5 4.3 Stand and horizontal vibration-free base . 5 4.4 Sieve 6 4
18、.5 Balance 6 4.6 Stopwatch . 6 4.7 Glove . 6 4.8 Level meter 6 5 Sampling . 9 6 Test method 10 7 Calculation. 10 8 Test report 11 Bibliography . 12 European foreword The text of ISO 14629:2012 has been prepared by Technical Committee ISO/TC 206 “Fine ceramics” of the International Organization for S
19、tandardization (ISO) and has been taken over as EN ISO 14629:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorse
20、ment, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. 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 identif
21、ying any or all such patent rights. This document supersedes ENV 14312:2002. 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,
22、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. Endorsemen
23、t notice The text of ISO 14629:2012 has been approved by CEN as EN ISO 14629:2016 without any modification. 3DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The
24、 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-gove
25、rnmental, 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
26、 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.
27、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 14629 was prepared by Technical Committee ISO/TC 206, Fine ceramics.4DIN EN ISO 14629:2016-11 EN I
28、SO 14629:2016 (E) 1 ScopeThis International Standard specifies a test method to determine the flowability of granulated or ungranulated ceramic powders by means of a specified funnel. The method is applicable only to powders which flow freely through the specified test orifice.2 Normative references
29、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 565, Test sieves Metal wire cloth, perforated
30、metal plate and electroformed sheet Nominal sizes of openingsISO 80000-1, Quantities and units Part 1: GeneralISO/IEC 17025, General requirements for the competence of testing and calibration laboratories3 PrincipleThe flow time required for approximately 50,0 g of ceramic powder to flow through the
31、 orifice of a funnel having specified dimensions is determined. The mass of the powder divided by its flow time gives its flow rate, i.e. flowability.4 Apparatus4.1 FunnelA stainless-steel funnel (Figure 1) having an orifice of diameter 2,5 mm and another funnel with an orifice of diameter 5,0 mm. T
32、he funnel shall be made of a non-magnetic, corrosion-resistant metallic material such as stainless steel (for example SUS 304) having sufficient wall thickness and hardness to withstand distortion and excessive wear.4.2 ContainerA stainless-steel container large enough to collect all of the ceramic
33、powders discharged from the orifice of a funnel, e.g. as indicated in Figure 2.4.3 Stand and horizontal vibration-free baseA stand to support the funnel concentric with the container so that the bottom of the funnel orifice is approximately 50 mm above the top of the container when the apparatus is
34、assembled as shown in Figure 3.4.4 SieveA sieve, as specified in ISO 565, with an aperture size of 0,71 mm.5DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) 4.5 BalanceA balance capable of weighing to the nearest 0,1 g or 0,01 g.NOTE A balance capable of weighing to the nearest 0,01 g should be used f
35、or very fluffy powders such as aerosil (fumed silica).4.6 StopwatchA stopwatch capable of measuring the elapsed time to the nearest 0,1 s.4.7 GloveA glove composed of a cotton which minimizes static electricity.NOTE The material of a suitable glove is dependent on safety instructions of powder manuf
36、acturer. If possible, use gloves of cotton, polyethylene, latex, etc.4.8 Level meterA level meter capable of checking the horizontality of the funnel.6DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) Dimensions in millimetres6550,82055186041,480,2605,23,2 0,0513,3252,5 0,04(5,0 0,04)aaor 6,4 0,05 for
37、5,0 diameterFigure 1 Example of funnel7DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) Dimensions in millimetres50511Key1 containerFigure 2 Example of container8DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) Dimensions in millimetres150 2Key1 funnel2 containerFigure 3 Example of apparatus for flowabi
38、lity5 Sampling5.1 The mass of the test samples shall be at least 200 g.5.2 In general, the powder should be tested in the as-received condition. In certain instances, the powder may be dried. If the powder is required to be dried, it should be dried at (110 5)C for at least 1 h and cooled down to ro
39、om temperature in a desiccator. If the powder contains volatile substances, it shall not be dried.5.3 Should there be any treatment (e.g. drying) of the powder before measurement, it shall be recorded in the test report.9DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) 5.4 Immediately before the test,
40、 weigh out 50,0 g of test portion.5.5 The determination shall be carried out on three test portions.6 Test method6.1 Weigh an empty and clean container (m0).6.2 Pass the ceramic powder through the sieve.6.3 Weigh out a 50,0 g mass of the powder, as sampled, into another clean container.6.4 Place the
41、 funnel on its stand and make sure that the upper rim is horizontal.NOTE If the powder does not flow through the 2,5 mm diameter orifice, use the funnel having the 5,0 mm diameter orifice.6.5 Place the empty container on the base directly under the funnel orifice.6.6 Block the orifice at the bottom
42、of the funnel with a finger wearing a glove.6.7 Carefully pour the 50,0 g test portion of powder into the centre of the funnel without any tapping, vibration or movement of the funnel.6.8 Simultaneously remove your finger from the discharge orifice and start the stopwatch.If the powder fails to star
43、t flowing or flow continuously, this shall be recorded in the test report.6.9 Stop the stopwatch at the instant when the last of the powder leaves the orifice.6.10 Record the elapsed flow time to the nearest 0,1 s (t).NOTE It is desirable that the elapsed times for the flow of 50,0 g powder should b
44、e measured using an apparatus which can sense the flow of powder and record the elapsed time automatically. Automatic time-recording makes the flowability data more accurate than manual time-recording. In addition, the deviation of flowability data recorded automatically is smaller than that recorde
45、d manually.6.11 Weigh the container and its contents (m1).6.12 Repeat 6.1 to 6.11 with two additional portions and average the results.7 CalculationCalculate the flowability of the ceramic powder, F, expressed as grams per second, using the following equation and round to 0,01 g/s in accordance with
46、 ISO 80000-1.Fmmt=10(1)where10DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) F is the flowability, in grams per second, of the ceramic powder;m0is the mass, in grams, of the empty container;m1is the mass, in grams, of the container and the ceramic powder;t is the elapsed flow time, in seconds, of th
47、e ceramic powder.8 Test reportThe test report shall be in accordance with the reporting provisions of ISO/IEC 17025 and shall contain the following:a) the name of the testing establishment;b) date of the test, report identification and number, operator, signatory;c) temperature and relative humidity
48、 in the laboratory;d) a reference to this International Standard;e) all details for identification of the test sample (material type, manufacturer, batch or code number);f) all operations not specified by this International Standard, or regarded as optional (e.g. any pre-treatment of the powder such
49、 as drying);g) the results obtained; flowability (g/s);h) details of any occurrence which may have affected the result (e.g. blockage of orifice, etc.).i) comments about the test or test results.11DIN EN ISO 14629:2016-11 EN ISO 14629:2016 (E) Bibliography1 ENV 14312, Advanced technical ceramics Ceramic powders Determination of flowability behavior of ceramic granules2 JIS R 1639-4, Test methods of properties of fine ceramic
