1、BSI Standards PublicationBS EN ISO 9934-3:2015Non-destructive testing Magnetic particle testingPart 3: EquipmentBS EN ISO 9934-3:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 9934-3:2015. It supersedes BS EN ISO 9934-3:2002 which iswithdrawn.The UK pa
2、rticipation in its preparation was entrusted to Technical Committee WEE/46, Non-destructive testing.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 res
3、ponsible for its correct application. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 82609 2 ICS 19.100 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standa
4、rds Policy and Strategy Committee on 30 September 2015.Amendments/corrigenda issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORMEN ISO 9934-3 September 2015 ICS 19.100 Supersedes EN ISO 9934-3:2002English Version Non-destructive testing - Magnetic particle tes
5、ting - Part 3: Equipment (ISO 9934-3:2015) Essais non destructifs - Magntoscopie - Partie 3: quipement (ISO 9934-3:2015) Zerstrungsfreie Prfung - Magnetpulverprfung - Teil 3: Gerte (ISO 9934-3:2015) This European Standard was approved by CEN on 10 July 2015. CEN members are bound to comply with the
6、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-CENELEC Management
7、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 has the same status as
8、 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, Luxembourg, Malta, Net
9、herlands, Norway, Poland, 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 2015 CEN All ri
10、ghts of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9934-3:2015 EBS EN ISO 9934-3:2015EN ISO 9934-3:2015 (E) 3 European foreword This document (EN ISO 9934-3:2015) has been prepared by Technical CommitteeCEN/TC 138 “Non-destructive testing”,
11、 the secretariat of which is held by AFNOR, in collaboration withTechnical Committee ISO/TC 135 “Non-destructive testing”. This European Standard shall be given the status of a national standard, either by publication of anidentical text or by endorsement, at the latest by March 2016, and conflictin
12、g national standards shallbe withdrawn at the latest by March 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject ofpatent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patentrights. This document supers
13、edes EN ISO 9934-3:2002. According to the CEN-CENELEC Internal Regulations, the national standards organizations of thefollowing countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of
14、 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 9934-3:2015 has been approved by
15、 CEN as EN ISO 9934-3:2015 without anymodification. BS EN ISO 9934-3:2015ISO 9934-3:2015(E)Foreword iv1 Scope . 12 Normative references 13 Safety requirements . 14 Types of devices . 14.1 Portable electromagnets (AC) 14.1.1 General 14.1.2 Technical data . 24.1.3 Technical requirements . 34.1.4 Addit
16、ional requirements . 34.2 Current generators 34.2.1 General 34.2.2 Technical data . 44.2.3 Technical requirements . 54.3 Magnetic benches . 54.3.1 General 54.3.2 Technical data . 54.3.3 Technical requirements . 64.3.4 Additional requirements . 64.4 Specialized testing systems 64.4.1 Technical data .
17、 74.4.2 Technical requirements . 75 UV-A sources 85.1 General . 85.2 Technical data 85.3 Technical requirements . 86 Detection media system 86.1 General . 86.2 Technical data 86.3 Technical requirements . 97 Inspection booth . 97.1 General . 97.2 Technical data 97.3 Technical requirements . 98 Demag
18、netization .108.1 General 108.2 Technical data . 108.3 Technical requirements 109 Measurements 109.1 General 109.2 Current measurement 109.3 Magnetic field measurement . 119.3.1 General. 119.3.2 Technical data 119.3.3 Technical requirements 119.4 Viewing conditions . 119.5 Verification and calibrati
19、on of instruments 11Bibliography .12 ISO 2015 All rights reserved iiiContents PageBS EN ISO 9934-3:2015ISO 9934-3:2015(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International St
20、andards 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 with ISO, also
21、 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 Directives, Part 1. In
22、 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 of the element
23、s 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 declarations received (
24、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 ISOs adherenc
25、e to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationISO 9934-3 was prepared by the European Committee for Standardization (CEN) Technical Committee CEN/TC 138, Non-destructive testing, in collaboration with ISO/TC 135, Non-destr
26、uctive testing, Subcommittee SC 2, Surface methods, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).This second edition cancels and replaces the first edition (ISO 9934-3:2002), which has been technically revised.ISO 9934 consists of the following par
27、ts under the general title Non-destructive testing Magnetic particle testing: Part 1: General principles Part 2: Detection media Part 3: Equipmentiv ISO 2015 All rights reservedBS EN ISO 9934-3:2015INTERNATIONAL STANDARD ISO 9934-3:2015(E)Non-destructive testing Magnetic particle testing Part 3: Equ
28、ipment1 ScopeThis part of ISO 9934 describes three types of equipment for magnetic particle testing: portable or transportable equipment; fixed installations; specialized testing systems for testing components on a continuous basis, comprising a series of processing stations placed in sequence to fo
29、rm a process line.Equipment for magnetizing, demagnetizing, illumination, measurement, and monitoring are also described.This part of ISO 9934 specifies the properties to be provided by the equipment supplier, minimum requirements for application and the method of measuring certain parameters. Where
30、 appropriate, measuring and calibration requirements and in-service checks are also specified.2 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 applie
31、s. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 3059, Non-destructive testing Penetrant testing and magnetic particle testing Viewing conditionsISO 9934-1, Non-destructive testing Magnetic particle testing Part 1: General rulesEN 10250-
32、2, Open steel die forgings for general engineering purposes Non-alloy quality and special steelsIEC 60529, Degrees of protection provided by enclosures (IP Code)3 Safety requirementsThe equipment design shall take into account all international, European, national and local regulations which include
33、 health, safety, electrical and environmental requirements.4 Types of devices4.1 Portable electromagnets (AC1)4.1.1 GeneralHand-held portable electromagnets (yokes) produce a magnetic field between the two poles. When testing according to ISO 9934-1, DC1)electromagnets should only be used if agreed
34、at enquiry and order stages.1) AC = alternating current, and DC = rectified current. ISO 2015 All rights reserved 1BS EN ISO 9934-3:2015ISO 9934-3:2015(E)Magnetization shall be determined by measuring the tangential field strength, Ht, at the centre of a line joining the centres of the pole faces of
35、 the electromagnet with pole extenders where used. The electromagnet with a pole spacing, s, is placed on a steel plate as shown in Figure 1. The plate shall have the dimensions (500 25) mm (250 13) mm (10 0,5) mm and shall be of steel conforming to C22 (1.0402) of EN 10250-2. Periodic functional ch
36、ecks can be carried out either by the method described above or by a lift test. The electromagnet shall be capable of supporting a steel plate or rectangular bar conforming to C22 (1.0402) of EN 10250-2 and having a minimum mass of 4,5 kg, with the magnet poles set at their recommended spacing. The
37、major dimension of the plate or bar shall be greater than the pole spacing, s, of the electromagnet.NOTE To lift a steel plate with a mass of 4,5 kg requires a lifting force of 44 N.Dimensions in millimetresKey1 poless pole spacingMP measuring point for the tangential field strengthFigure 1 Determin
38、ation of the characteristics of portable electromagnets4.1.2 Technical dataThe following data shall be provided: recommended pole spacing (maximum and minimum pole spacing) (smax, smin); cross sectional dimensions of the poles; electrical supply (voltage, current, and frequency); current wave forms
39、available; method of current control and effect on waveform (e.g. thyristor); duty cycle at maximum output (ratio of current “ON” to “Total” time expressed as a percentage); maximum current “ON” time; tangential field strength Htat smaxand smin(following 4.1); overall dimensions of the equipment;2 I
40、SO 2015 All rights reservedBS EN ISO 9934-3:2015ISO 9934-3:2015(E) equipment mass, in kilograms; specified electrical protection degree (IP) according to IEC 60529.4.1.3 Technical requirementsThe following requirements shall be satisfied at an ambient temperature of 30 C and at maximum output: duty
41、cycle 10 % current “ON” time 5 s surface temperature of handle 40 C tangential field strength at smax(see 4.1) 2 kA/m (RMS) lifting force 44 N4.1.4 Additional requirementsThe electromagnet shall be supplied with a power ON/OFF switch, preferably mounted on the handle.Generally electromagnets should
42、be usable with one hand.4.2 Current generators4.2.1 GeneralCurrent generators are used to supply current for magnetizing equipment. A current generator is characterized by the open circuit voltage, U0, the short circuit current, Ikand the rated current, Ir(RMS-values).The rated current, Ir, is defin
43、ed as the maximum current for which the generator is rated at the duty cycle of 10 % and for a current “ON” time of 5 s if not otherwise specified.The open circuit voltage, U0, and the short circuit current, Ik, are derived from the load-characteristic of the generator at maximum power (with any fee
44、dback controls disconnected). The load line of the generator can be derived by connecting two widely different loads, such as different lengths of cable, in turn to the generator. For the first cable, the current, I1, through the cable and voltage, U1, across the output terminals are measured and pl
45、otted, to give point P1on Figure 2. The process is repeated with a second load to give point P2. The load line is constructed by drawing a straight line between P1and P2. The open circuit voltage, U0, and short circuit current, Ik, are then given by the intercepts on the axes, as shown in Figure 2.
46、ISO 2015 All rights reserved 3BS EN ISO 9934-3:2015ISO 9934-3:2015(E)Figure 2 Load characteristics of the current generator4.2.2 Technical dataThe following data shall be provided: open circuit voltage, U0(RMS); short circuit current, Ik(RMS); rated current, Ir(RMS); duty cycle at maximum output (if
47、 other than as specified in 4.2.1 ); maximum current “ON” time (if other than specified in 4.2.1 ); current wave forms available; method of current regulation and effect on waveform; working range and incremental setting steps; method of constant current control if available; type of meter (digital,
48、 analog); resolution and accuracy of current output meter; electrical supply requirements at maximum current output (voltage, phases, frequency, and current); specified electrical protection degree (IP) according to IEC 60529; overall dimensions of equipment; equipment mass, in kilograms; type of de
49、magnetization, if available (see Clause 8).4 ISO 2015 All rights reservedBS EN ISO 9934-3:2015ISO 9934-3:2015(E)4.2.3 Technical requirementsThe following requirements shall be satisfied at an ambient temperature of 30C and at the rated current Ir: duty cycle: 10 %; current “ON” time: 5 s.NOTE High testing rates will require a higher duty cycle.4.3 Magnetic benches4.3.1 GeneralFixed installation benches can include facilities for current flow and magnetic flow techniques. Magn
