EN ISO 3927-2017 en Metallic powders excluding powders for hardmetals - Determination of compressibility in uniaxial compression.pdf

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1、Metallic powders, excluding powders for hardmetals - Determination of compressibility in uniaxial compression (ISO 3927:2017)BS EN ISO 3927:2017BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3927 September 201

2、7 ICS 77.160 Supersedes EN ISO 3927:2011English Version Metallic powders, excluding powders for hardmetals - Determination of compressibility in uniaxial compression (ISO 3927:2017) Poudres mtalliques, lexclusion des poudres pour mtaux-durs - Dtermination de la compressibilit sous compression uniaxi

3、ale (ISO 3927:2017) Metallpulver, mit Ausnahme von Hartmetallpulvern - Bestimmung der Verdichtbarkeit bei einachsigem Pressen (ISO 3927:2017) This European Standard was approved by CEN on 26 September 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the

4、 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

5、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

6、 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,

7、 Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any

8、 means reserved worldwide for CEN national Members. Ref. No. EN ISO 3927:2017 ENational forewordThis British Standard is the UK implementation of EN ISO 3927:2017. It is identical to ISO 3927:2017. It supersedes BS EN ISO 3927:2011, which is withdrawn.The UK participation in its preparation was entr

9、usted to Technical Committee ISE/65, Sintered metal components.A list of organizations represented on this committee can be obtained 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.

10、 The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 97218 8ICS 77.160Compliance with 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 31

11、 October 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 3927:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3927 September 2017 ICS 77.160 Supersedes EN ISO 3927:2011English Version Metallic powders, excluding powders for hardmetals - Det

12、ermination of compressibility in uniaxial compression (ISO 3927:2017) Poudres mtalliques, lexclusion des poudres pour mtaux-durs - Dtermination de la compressibilit sous compression uniaxiale (ISO 3927:2017) Metallpulver, mit Ausnahme von Hartmetallpulvern - Bestimmung der Verdichtbarkeit bei einach

13、sigem Pressen (ISO 3927:2017) This European Standard was approved by CEN on 26 September 2017. 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-da

14、te 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

15、 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, For

16、mer 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 STANDARDIZATI

17、ON COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3927:2017 EBS EN ISO 3927:2017EN ISO 3927:20

18、17 (E) 3 European foreword This document (EN ISO 3927:2017) has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy”. 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 March 2018, and

19、 conflicting national standards shall be withdrawn at the latest by March 2018. 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 superse

20、des EN ISO 3927:2011. 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

21、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 3927:2017 has been app

22、roved by CEN as EN ISO 3927:2017 without any modification. ISO 3927:2017(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Symbols 15 Principle 16 Apparatus . 27 Sampling 58 Procedure. 58.1 Cleaning of the die and punches 58.2 Powder testing conditions 58.3 Lubrication . 6

23、8.3.1 General 68.3.2 Die wall lubrication . 68.3.3 Lubrication of powder 68.4 Compacting and ejection 68.5 Compacting pressures 69 Expression of results 810 Precision . 811 Test report . 8Bibliography 9 ISO 2017 All rights reserved iiiContents PageBS EN ISO 3927:2017ISO 3927:2017(E)Foreword iv1 Scop

24、e . 12 Normative references 13 Terms and definitions . 14 Symbols 15 Principle 16 Apparatus . 27 Sampling 58 Procedure. 58.1 Cleaning of the die and punches 58.2 Powder testing conditions 58.3 Lubrication . 68.3.1 General 68.3.2 Die wall lubrication . 68.3.3 Lubrication of powder 68.4 Compacting and

25、 ejection 68.5 Compacting pressures 69 Expression of results 810 Precision . 811 Test report . 8Bibliography 9 ISO 2017 All rights reserved iiiContents PageBS EN ISO 3927:2017ISO 3927:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standa

26、rds 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 organ

27、izations, 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 f

28、urther 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/direc

29、tives).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

30、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 voluntary nature of standards, the meaning of ISO spec

31、ific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.htmlThis document was prepared by Technical Committee ISO

32、/TC 119, Powder metallurgy, Subcommittee SC 2, Sampling and testing methods for powders (including powders for hardmetals).This fifth edition cancels and replaces the fourth edition (ISO 3927:2011), of which it constitutes a minor revision to adjust punch tolerances in Figure 2 and clarify the use o

33、f scale and micrometer.iv ISO 2017 All rights reservedBS EN ISO 3927:2017ISO 3927:2017(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

34、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 coll

35、aborates 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 approv

36、al 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 sub

37、ject 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 trad

38、e name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adheren

39、ce to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.htmlThis document was prepared by Technical Committee ISO/TC 119, Powder metallurgy, Subcommittee SC 2, Sampling and testing methods for powders (including pow

40、ders for hardmetals).This fifth edition cancels and replaces the fourth edition (ISO 3927:2011), of which it constitutes a minor revision to adjust punch tolerances in Figure 2 and clarify the use of scale and micrometer.iv ISO 2017 All rights reserved INTERNATIONAL STANDARD ISO 3927:2017(E)Metallic

41、 powders, excluding powders for hardmetals Determination of compressibility in uniaxial compression1 ScopeThis document specifies methods for measuring the extent to which a metallic powder is compacted when subjected to uniaxial compressive loading in a confining die under specified conditions.The

42、method is not applicable to powders for hardmetals.2 Normative referencesThere are no normative references in this document.3 Terms and definitionsNo terms and definitions are listed in this document. ISO and IEC maintain terminological databases for use in standardization at the following addresses

43、: ISO Online browsing platform: available at http:/www.iso.org/obp IEC Electropedia: available at http:/www.electropedia.org/4 SymbolsFor the purposes of this document, the symbols given in Table 1 apply.Table 1 SymbolsSymbol Designation UnitpCompressibilityag/cm3m Mass of the compact gV Volume of t

44、he compact cm3aIf the compressibility is measured at one pressure only, e.g. 400 N/mm2, the symbol becomes p(400).5 PrincipleUniaxial compaction of a powder in a confining die by double-action pressing. Samples of the powder may be pressed either at a single specified pressure or at a series of spec

45、ified pressures. After ejection from the die, the density of the compacts is determined.The density obtained in the former case represents the compressibility of the powder at the specified pressure. The densities obtained in the latter case can be utilized for drawing the compressibility curve of t

46、he powder, i.e. a plot of the density as a function of the compacting pressure. ISO 2017 All rights reserved 1BS EN ISO 3927:2017ISO 3927:2017(E)6 Apparatus6.1 Die, preferably of cemented carbide, or alternatively of tool steel, and two punches for producing either cylindrical or rectangular compact

47、s.The cylindrical die should be capable of making compacts of diameter 20 mm to 26 mm with a height to diameter ratio between 0,8 and 1. An example of a design for tooling is shown in Figure 1.The rectangular die should be capable of making compacts of 30 mm 12 mm and of thickness 5 mm to 7 mm. An e

48、xample of a design for tooling is shown in Figure 2.Mating parts shall be fitted and lapped.Dimensions in millimetresa) Upper punch, L = H 10 b) Die, H = 60 mm to 80 mm 2 ISO 2017 All rights reservedBS EN ISO 3927:2017ISO 3927:2017(E)6 Apparatus6.1 Die, preferably of cemented carbide, or alternative

49、ly of tool steel, and two punches for producing either cylindrical or rectangular compacts.The cylindrical die should be capable of making compacts of diameter 20 mm to 26 mm with a height to diameter ratio between 0,8 and 1. An example of a design for tooling is shown in Figure 1.The rectangular die should be capable of making compacts of 30 mm 12 mm and of thickness 5 mm to 7 mm. An example of a design for tooling is shown in Figure 2.Mating parts shall be fitted and lapped.Dimensions in millimetresa) Upper punch, L = H