1、BSI Standards PublicationBS ISO 14629:2012Fine ceramics (advancedceramics, advanced technicalceramics) Determination of flowability of ceramic powders (ISO 14629:2012)BS EN ISO 14629:2016BS EN ISO 14629:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 14
2、629:2016. It is identical to ISO 14629:2012. It supersedes DD ENV 14312:2002 and BS ISO 14629:2012 which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee RPI/13, Advanced technical ceramics.A list of organizations represented on this committee can be obtaine
3、d on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016. Published by BSI Standards Limited 2016ISBN 978 0 580 91175 0ICS 81.060.30Compliance with
4、a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2012.Amendments/corrigenda issued since publicationDate Text affected31 May 2016 This corrigendum renumbers BS ISO 14
5、629:2012 as BS EN ISO 14629:2016EUROPEAN STANDARD NORME 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
6、 techniques - Dtermination de laptitude lcoulement des 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
7、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
8、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 version
9、s. 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, Pol
10、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, 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
11、in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14629:2016 EBS ISO 14629:2012ISO 14629:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing I
12、nternational 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
13、 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 main task of techni
14、cal 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.Attention is drawn t
15、o 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. ISO 2012 All rights reserved iiiEN ISO 14629:2016
16、 (E) 3 European foreword The text of ISO 14629:2012 has been prepared by Technical Committee ISO/TC 206 “Fine ceramics” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 14629:2016 by Technical Committee CEN/TC 184 “Advanced technical ceramics” the secreta
17、riat 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 endorsement, at the latest by October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Attention is drawn
18、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 ENV 14312:2002. According to the CEN-CENELEC Internal Regulations, the national
19、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, Lithuani
20、a, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14629:2012 has been approved by CEN as EN ISO 14629:2016 without any modification. BS EN ISO 14629:2016EN ISO 14629:
21、2016 (E)BS ISO 14629:2012ISO 14629:2012(E)ForewordISO (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 b
22、ody 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 Electro
23、technical 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 main task of technical committees is to prepare International Standards. Draft International Standards adopted by
24、 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 document may be the subject of patent righ
25、ts. 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. ISO 2012 All rights reserved iiiBS EN ISO 14629:2016ISO 14629:2012(E)BS ISO 14629:2012 BS ISO 14629:2012Fine ceramics (advanced ceramics, advan
26、ced technical ceramics) Determination of flowability of ceramic powders1 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 thro
27、ugh the specified test orifice.2 Normative referencesThe 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) appli
28、es.ISO 565, Test sieves Metal wire cloth, perforated 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 appro
29、ximately 50,0 g of ceramic powder to flow through the 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
30、 another funnel with an orifice of diameter 5,0 mm. The 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
31、container large enough to collect all of the ceramic 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
32、above the top of the container when the apparatus is assembled as shown in Figure 3.4.4 SieveA sieve, as specified in ISO 565, with an aperture size of 0,71 mm.INTERNATIONAL STANDARD ISO 14629:2012(E) ISO 2012 All rights reserved 1BS EN ISO 14629:2016BS ISO 14629:2012 BS ISO 14629:2012Fine ceramics
33、(advanced ceramics, advanced technical ceramics) Determination of flowability of ceramic powders1 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 powde
34、rs which flow freely through the specified test orifice.2 Normative referencesThe 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 (includ
35、ing any amendments) applies.ISO 565, Test sieves Metal wire cloth, perforated 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 flo
36、w time required for approximately 50,0 g of ceramic powder to flow through the 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 orifi
37、ce of diameter 2,5 mm and another funnel with an orifice of diameter 5,0 mm. The 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 Co
38、ntainerA stainless-steel container large enough to collect all of the ceramic 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 orific
39、e is approximately 50 mm above the top of the container when the apparatus is assembled as shown in Figure 3.4.4 SieveA sieve, as specified in ISO 565, with an aperture size of 0,71 mm.INTERNATIONAL STANDARD ISO 14629:2012(E) ISO 2012 All rights reserved 1BS EN ISO 14629:2016BS ISO 14629:2012ISO 146
40、29:2012(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 for 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 Glo
41、veA glove composed of a cotton which minimizes static electricity.NOTE The material of a suitable glove is dependent on safety instructions of powder manufacturer. If possible, use gloves of cotton, polyethylene, latex, etc.4.8 Level meterA level meter capable of checking the horizontality of the fu
42、nnel.2 ISO 2012 All rights reservedBS ISO 14629:2012ISO 14629:2012(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 5,0 diameterFigure 1 Example of funnel ISO 2012 All rights reserved 3BS EN ISO 14629:2016ISO 14629:2012(E)BS ISO 14629:2012ISO 14
43、629:2012(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 for 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 Gl
44、oveA glove composed of a cotton which minimizes static electricity.NOTE The material of a suitable glove is dependent on safety instructions of powder manufacturer. If possible, use gloves of cotton, polyethylene, latex, etc.4.8 Level meterA level meter capable of checking the horizontality of the f
45、unnel.2 ISO 2012 All rights reservedBS ISO 14629:2012ISO 14629:2012(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 5,0 diameterFigure 1 Example of funnel ISO 2012 All rights reserved 3BS EN ISO 14629:2016ISO 14629:2012(E)BS ISO 14629:2012ISO 1
46、4629:2012(E)Dimensions in millimetres50511Key1 containerFigure 2 Example of container4 ISO 2012 All rights reservedBS ISO 14629:2012ISO 14629:2012(E)Dimensions in millimetres150 2Key1 funnel2 containerFigure 3 Example of apparatus for flowability5 Sampling5.1 The mass of the test samples shall be at
47、 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 room temperature in a desiccator. If the powder contains vol
48、atile 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. ISO 2012 All rights reserved 5BS EN ISO 14629:2016ISO 14629:2012(E)BS ISO 14629:2012ISO 14629:2012(E)Dimensions in millimetres50511Key1 c
49、ontainerFigure 2 Example of container4 ISO 2012 All rights reservedBS ISO 14629:2012ISO 14629:2012(E)Dimensions in millimetres150 2Key1 funnel2 containerFigure 3 Example of apparatus for flowability5 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 coo
