1、February 2016 English price group 12No 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 77.040.10!%LL0“2414113www.din.d
2、eDIN EN ISO 16859-3Metallic materials Leeb hardness test Part 3: Calibration of reference test blocks (ISO 16859-3:2015);English version EN ISO 16859-3:2015,English translation of DIN EN ISO 16859-3:2016-02Metallische Werkstoffe Hrteprfung nach Leeb Teil 3: Kalibrierung von Hrtevergleichsplatten (IS
3、O 16859-3:2015);Englische Fassung EN ISO 16859-3:2015,Englische bersetzung von DIN EN ISO 16859-3:2016-02Matriaux mtalliques Essai de duret Leeb Partie 3: Etalonnage des blocs de rfrence (ISO 16859-3:2015);Version anglaise EN ISO 16859-3:2015,Traduction anglaise de DIN EN ISO 16859-3:2016-02Supersed
4、esDIN 50156-3:2007-07www.beuth.deDocument comprises 21 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.02.16 A comma is used as the decimal marker. National foreword This document (EN ISO 16859-3:2015) has been prepared by Tech
5、nical Committee ISO/TC 164 “Mechanical testing of metals”, Subcommittee SC 3 “Hardness testing” (Secretariat: DIN, Germany) in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” (Secretariat: AFNOR, France) in accordance with the agreement on
6、technical cooperation between ISO and CEN (Vienna Agreement). The responsible German body involved in its preparation was DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-01-41 AA Hrteprfung fr Metalle. DIN EN ISO 16859 consists of the followin
7、g parts, under the general title Metallic materials Leeb hardness test: Part 1: Test method Part 2: Verification and calibration of testing devices Part 3: Calibration of reference test blocks The DIN Standards corresponding to the International Standards referred to in this document are as follows:
8、 ISO 4287 DIN EN ISO 4287 ISO 16859-1 DIN EN ISO 16859-1 ISO 16859-2 DIN EN ISO 16859-2 ISO/IEC 17025 DIN EN ISO/IEC 17025 Amendments This standard differs from DIN 50156-3:2007-07 as follows: a) the number of the standard has been changed; b) the specifications for the types of impact devices are n
9、ow more detailed; c) impact device type DC designed with shortened guide tube as a special device type D is no longer included; d) the specifications for calibration have been updated; e) the procedures for calculating measurement uncertainties have been brought in line with ISO/IEC Guide 98-3 (GUM)
10、; f) the standard has been editorially revised. Previous editions DIN 50156-3: 2007-07 2DIN EN ISO 16859 -3:2016 -02 National Annex NA (informative) Bibliography DIN EN ISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parameter
11、s DIN EN ISO 16859-1, Metallic materials Leeb hardness test Part 1: Test method DIN EN ISO 16859-2, Metallic materials Leeb hardness test Part 2: Verification and calibration of testing devices DIN EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories 3DIN
12、 EN ISO 16859 -3:2016 -02 This page is intentionally blank 4DIN EN ISO 16859 -3:2016 -02 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 16859-3 October 2015 ICS 77.040.10 English Version Metallic materials - Leeb hardness test - Part 3: Calibration of reference test blocks (ISO 16859-3:201
13、5) Matriaux mtalliques - Essai de duret Leeb -Partie 3 : Etalonnage des blocs de rfrence(ISO 16859-3:2015) Metallische Werkstoffe - Hrteprfung nach Leeb -Teil 3: Kalibrierung von Hrtevergleichsplatten(ISO 16859-3:2015) This European Standard was approved by CEN on 10 July 2015. CEN members are bound
14、 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
15、-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 ha
16、s 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, Lu
17、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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 Bru
18、ssels 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 16859-3:2015 EForeword . 41 Scope . 52 Normative references 53 Manufacture of reference test blocks . 54 Calibration machine 64.1 General . 64.2 Traceability 64.3 Requi
19、rements on calibration machines . 64.4 Calibration of calibration machines 75 Calibration procedure . 86 Number of test indentations 87 Uniformity of hardness 88 Marking .109 Validity .10Annex A (normative) Requirements for Leeb hardness calibration machines .11Annex B (informative) Measurement unce
20、rtainty of reference test block 12Annex C (informative) Examples of reference test block .16Bibliography .17Contents PageDIN EN ISO 16859 -3:2016 -02 EN ISO 16859-3:2015 (E) 2European Foreword . 3European foreword This document (EN ISO 16859-3:2015) has been prepared by Technical Committee ISO/TC 16
21、4 “Mechanical testing of metals” in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical te
22、xt or by endorsement, at the latest by April 2016, and conflicting national standards shall be withdrawn at the latest by April 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
23、 for identifying any or all such patent rights. 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, Fo
24、rmer 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. Endorsement notice The text of ISO 1685
25、9-3:2015 has been approved by CEN as EN ISO 16859-3:2015 without any modification. DIN EN ISO 16859 -3:2016 -02 EN ISO 16859-3:2015 (E)3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing
26、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 liaiso
27、n 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 Direct
28、ives, 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
29、 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 declarat
30、ions 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 meaning of ISO specific terms and expressions related to conformity assessment, as well as information about
31、 ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary Information The committee responsible for this document is ISO/TC 164, Mechanical testing of metals, Subcommittee SC 3, Hardness testing.ISO 16859 consists of the following
32、parts, under the general title Metallic materials Leeb hardness test: Part 1: Test method Part 2: Verification and calibration of the testing devices Part 3: Calibration of reference test blocksDIN EN ISO 16859 -3:2016 -02 EN ISO 16859-3:2015 (E) 4 1 ScopeThis part of ISO 16859 specifies a method fo
33、r the calibration of reference test blocks that are used for the indirect verification of Leeb hardness testers according to ISO 16859-2 and for the periodic checking according to ISO 16859-1.The procedures necessary to ensure metrological traceability of the calibration machine are also specified.2
34、 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendme
35、nts) applies.ISO 16859-1, Metallic materials Leeb hardness test Part 1: Test methodISO 16859-2, Metallic materials Leeb hardness test Part 2: Verification and calibration of the testing devicesISO/IEC 17025, General requirements for the competence of testing and calibration laboratories3 Manufacture
36、 of reference test blocks3.1 The block shall be specially manufactured for use as a reference test block.Attention is drawn to the need to use a manufacturing process which will give the necessary homogeneity, stability of texture and uniformity of surface hardness.3.2 The uniformity of the metallic
37、 reference test block shall meet the requirements specified in 7.2 and Table 3.3.3 The impact nature of a Leeb test requires a reference test block with a minimum mass and thickness, as specified in Table 1.NOTE Examples of common dimensions of reference test blocks are specified in Annex C.DIN EN I
38、SO 16859 -3:2016 -02 EN ISO 16859-3:2015 (E)5 Table 1 Mass and thickness requirements of reference test blockType of impact devicesMinimum thicknessMinimum diameterMinimum massmm mm kgD, DL, D+15, S, E, C 33 85 2,7G 65 115 6,03.4 The reference test blocks shall be free of magnetism prior to calibrat
39、ion.3.5 The maximum deviation from surface flatness of the top and bottom surfaces shall not exceed 0,01 mm. The surfaces of the blocks shall not be convex.The maximum deviation from parallelism of the top and bottom surfaces shall not exceed 0,02 mm per 50 mm.3.6 The test surfaces shall be free fro
40、m damage, such as notches, scratches, oxide layers, etc., which interfere with the mechanics of the indentation process.The mean surface roughness, Ra, 2of the test surface(s) shall not exceed 0,1 m. The sampling length, l, is 0,80 mm (see ISO 4287:1997, 3.1.9).3.7 To provide evidence that no materi
41、al is removed from the test surface(s) of the reference test block subsequent to calibration, the thickness at the time of calibration shall be marked on the test surface(s) or printed on the calibration certificate to an accuracy of 0,1 mm. Alternatively, a mark shall be placed on both the top and
42、bottom surfaces, see 8.1 e).4 Calibration machine4.1 GeneralIn addition to fulfilling the general conditions specified in ISO 16859-2:2015, Clause 3, the calibration machine shall also meet the requirements given in 4.2 to 4.4.4.2 Traceability4.2.1 Leeb primary hardness standard machines owned by na
43、tional level institutions are used to calibrate primary reference test blocks in Leeb hardness for accredited Leeb hardness calibration laboratories according to ISO/IEC 17025.4.2.2 The instruments used for the verification and calibration of the Leeb hardness calibration machine shall be traceable
44、to national standards.NOTE A four-level structure of the metrological chain is necessary to define and disseminate hardness scales. The metrological chain of hardness values obtained by the Leeb method is defined in ISO 16859-1:2015, Figure C.1.4.3 Requirements on calibration machines4.3.1 Requireme
45、nts on Leeb hardness calibration machines are given in Annex A.4.3.2 The resolution of Leeb hardness calibration machines shall be equal to or better than 1,0 HL.DIN EN ISO 16859 -3:2016 -02 EN ISO 16859-3:2015 (E) 6 4.4 Calibration of calibration machines4.4.1 Leeb hardness calibration machines sha
46、ll be calibrated at an interval of 700 1,0 1,0DL, S850 1,0 1,0C, E750 1,0 1,0G600 1,0 1,0aHLD for impact devices D, HLD+15 for impact devices D+15, HLDL for impact devices DL, HLS for impact devices S, HLC for impact devices C, HLE for impact devices E, HLG for impact devices G.Indirect calibration
47、comprises at least 10 readings on each reference test block.4.4.4 Calculation of error and repeatability of indirect calibration:HnHn=11i(1)whereH is the Leeb hardness mean value;Hiis the single Leeb hardness reading.bnHHnHiCRM=11(2)whereHCRMis the Leeb hardness of primary reference test block;bHis
48、the error of Leeb hardness.DIN EN ISO 16859 -3:2016 -02 EN ISO 16859-3:2015 (E)7 In indirect calibration, requirements concerning the limiting error of Leeb hardness are met whenGbHuHH CRM+() (3)whereGHis the limiting error of Leeb hardness (see Table 2);uCRMis the calibration uncertainty of primary reference test blocks according
