1、BRITISH STANDARDBS EN 60239:2005Graphite electrodes for electric arc furnaces Dimensions and designationThe European Standard EN 60239:2005 has the status of a British StandardICS 25.180.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g5
2、1g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 60239:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 24 February 2006 BSI 24 February 2006ISBN 0 580 47782 7National forewordThis British Stan
3、dard is the official English language version of EN 60239:2005. It is identical with IEC 60239:2005. It supersedes BS EN 60239:1997 which will be withdrawn on 1 July 2008.The UK participation in its preparation was entrusted to Technical Committee PEL/27, Electroheating, which has the responsibility
4、 to: A list of organizations represented on this committee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogueunder the section entitled “International
5、Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Stand
6、ard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European de
7、velopments and promulgate them in the UK.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 23 and a back cover.The BSI copyright date displayed in this document indicates when the document was last issued.Amendments issued since publicationAm
8、d. No. Date CommentsEUROPEAN STANDARD EN 60239 NORME EUROPENNE EUROPISCHE NORM September 2005 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B -
9、1050 Brussels 2005 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60239:2005 E ICS 25.180.10 Supersedes EN 60239:1997English version Graphite electrodes for electric arc furnaces Dimensions and designation (IEC 60239:2005) Electr
10、odes en graphite pour les fours arc Dimensions et dnomination (CEI 60239:2005) Graphitelektroden fr Lichtbogenfen Mae und Kennzeichnung (IEC 60239:2005) This European Standard was approved by CENELEC on 2005-07-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which s
11、tipulate 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 Central Secretariat or to any CENELEC member. This European Sta
12、ndard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions. CENELEC members are the nati
13、onal electrotechnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United K
14、ingdom. 2 Foreword The text of document 27/464/FDIS, future edition 4 of IEC 60239, prepared by IEC TC 27, Industrial electroheating equipment, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60239 on 2005-07-01. This European Standard supersedes EN 60239:1997. Signi
15、ficant technical changes with respect to EN 60239:1997 are as follows: addition of 750 mm nominal diameter electrodes; revision of electrode diameter and length tolerances; revision of nominal lengths and diameters; introduction of socket and pin tolerances; revision of Annex A on male-female electr
16、odes; addition of Annex B on handling and jointing. This new edition also aims at a better compatibility between EN 60239 and other technical standards that cover the same subject, as well as better compliance with standards for figures, tables and symbols in that respect, and in addition to the con
17、tent, the format and the title of this standard have been modified. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2006-04-01 latest date by which the national standards conf
18、licting with the EN have to be withdrawn (dow) 2008-07-01 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 60239:2005 was approved by CENELEC as a European Standard without any modification. _ EN 60239:2005 3 CONTENTS1 Scope and object42 Normative r
19、eferences .43 Terms and definitions .54 Electrodes64.1 Description of product .64.2 Diameters of electrodes.74.3 Lengths of electrodes 84.4 Dimensions of sockets.94.5 Designation .135 Pins .165.1 Dimensions .145.2 Designation .145.3 Non-standard pin design details.146 Tolerances for sockets and pins
20、 .146.1 Tolerances for socket and pin dimensions146.2 Specific requirements on tolerances for socket and pin threaded area156.3 Specific requirements on tolerances for socket and pin unthreaded area16 Annex A (informative) Male-female electrodes .17Annex B (informative) Electrode handling and jointi
21、ng 21 Annex ZA (normative) Normative references to international publications with their corresponding European publications .23Figure 1 Electrode with pin 7Figure 2 Electrode column .7Figure 3 Socket and pin, type T410Figure 4 Socket and pin, type T312Figure A.1 Male-female electrode, type MF3 18Fi
22、gure A.2 Male-female electrode, type MF4 19Figure A.3 Male-female electrode, type MF8 20Table 1 Diameters and nominal lengths of electrodes.8Table 2 Lengths of electrodes 8Table 3 Dimensions of pins and sockets of electrodes (type T4) .11Table 4 Dimensions of pins and sockets of electrodes (type T3)
23、 .13Table 5 Tolerances for sockets and pins (type T4) .15Table 6 Tolerances for sockets and pins (type T3) .15Table A.1 Dimensions of male-female electrodes of diameters from 300 mm to 400 mm (type MF3) 18Table A.2 Dimensions of male-female electrodes of diameters from 175 mm to 250 mm (type MF4) 19
24、Table A.3 Dimensions of male-female electrodes of diameters from 75 mm to 150 mm (type MF8) 20EN 60239:2005 4 GRAPHITE ELECTRODES FOR ELECTRIC ARC FURNACES DIMENSIONS AND DESIGNATION 1 Scope and object This International Standard specifies the dimensions of turned and threaded cylindrical graphite a
25、rc furnace electrodes and graphite electrode pins for use as full graphite electrode columns on arc furnaces. This standard covers the dimensions and tolerances on length and diameter of electrodes; the dimensions, tolerances and thread details for electrode sockets and pins of tapered shape, used w
26、ith the electrodes. The standardization of the above dimensional features is essential for the interchangeability of electrodes from different sources, and is a minimum standard. NOTE 1 The standardization ensures that any suppliers electrode at ambient temperature can accept any othersuppliers pin
27、of appropriate dimensions.However, the variety of raw materials and production techniques may lead to different thermal behaviour of finished products. It is, therefore recommended that electrodes and pins from different sources should not be mixed in use. Annex A contains information on male-female
28、 electrodes used in some countries. Annex B contains recommendations for electrode handling and jointing procedures. The metric system is adopted as the standard of measurement. NOTE 2 The use of decimals has been deliberately limited to two digits after the decimal point. 2 Normative references The
29、 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. IEC 60050-841:2004, International Electrotechnical V
30、ocabulary (IEV) Part 841: Industrial electroheatEN 60239:2005 5 3 Terms and definitions For the purposes of this document, the terms and definitions given in IEC 60050-841 and the following apply. NOTE Figure 1, Figure 2, Figure 3 and Figure 4 provide alternative explanation for all terms related to
31、 dimensions.3.1arc furnace electrode element of high-current line inserted through the electrode port inside the furnace body, enabling the ignition and maintenance of an arc between the electrode tip and charge, or the tip of another electrode IEV 841-26-38 3.2(graphite) (arc furnace) electrode arc
32、 furnace electrode made of graphite, turned to a cylinder and machined with threaded areas at each end so as to permit assembly as a column using an electrode pin NOTE Electrodes are machined as cylinders to permit holding in the electrode clamp. 3.3male-female electrode arc furnace electrode made o
33、f graphite where the assembly is made possible without electrode pins but through the machining of one end of the electrode as an external (male) thread and the other end as an internal (female) thread 3.4electrode column assembly of several arc furnace electrodes NOTE Electrode columns are also cal
34、led continuous electrodes. 3.5(electrode) pin electrode nipple part made of graphite, in the shape of truncated cones with common base, threaded both sides, joining two arc furnace electrodes of the same diameter IEV 841-26-47, modified 3.6socket (of an electrode) internal taper-threaded area locate
35、d at each end of an electrode that can be equipped with a corresponding electrode pin 3.7jointassembly of two threaded electrode sockets and their matching pin 3.8taperfull angle of the cone represented by the pitch line of the threads NOTE The taper (see Figures 3 and 4) can be referenced to using
36、the actual angle or its tangent. EN 60239:20053.9slopeangle between the thread pitch line and axis of threadNOTE The slope angle is half of the taper angle. It can be referenced by using the actual angle or its tangent. 3.10pitch diameter of the pin diameter of the circle, intersection of the plane
37、perpendicular to the axis of the pin at the half length of the pin with the cone that comprises the pitch lines of the pin threads NOTE See d2in Figures 3 and 4. 3.11major diameter of the pin diameter of the circle, intersection of the plane perpendicular to the axis of the pin at the half length of
38、 the pin with the cone that comprises the lines connecting the crests of the pin threadsNOTE See d1in Figures 3 and 4. 3.12nominal diameter of the pin major diameter of the pin truncated to zero decimal place 3.13pitch diameter of the socket diameter of the circle, intersection of the plane perpendi
39、cular to the axis of the socket, which matches the extremity of the electrode cylinder, with the cone that comprises the pitch lines of the socket thread NOTE See d4in Figures 3 and 4. 3.14minor diameter of the socket diameter of the circle, intersection of the plane perpendicular to the axis of the
40、 socket, which matches the extremity of the electrode cylinder, with the cone that comprises the lines connecting the crest of the of the socket thread NOTE See d3in Figures 3 and 4. 3.15low spot part of the cylinder untouched by the tool when machining the electrode 4 Electrodes 4.1 Description of
41、product Figure 1 shows a graphite arc furnace electrode with its pin in place, ready to be assembled into an electrode column. Electrodes may be shipped as shown in Figure 1, with pins already assembled in sockets or with pins separately packaged. EN 60239:2005 6 7 dl1 23IEC 853/05Key d electrode di
42、ameter l electrode length 1 electrode 2 pin 3 socket Figure 1 Electrode with pin Figure 2 shows an electrode column, after assembly. Usually, 3 or 4 graphite arc furnace electrodes may be assembled to form an electrode column. 13 2 IEC 854/05Key 1 electrode 2 pin 3 socket Figure 2 Electrode column 4
43、.2 Diameters of electrodes Nominal electrode lengths for a given nominal diameter are given in Table 1, as well as the specifications for actual diameters. Electrodes shall be machined in order to obtain the specified diameter over the whole electrode length. EN 60239:2005Table 1 Diameters and nomin
44、al lengths of electrodes Actual diameter specificationsdNominal diameter Maximum Minimum Nominal length mm751001301501752002252503003504004505005506006507007507810313215417920523025630735840946051156261366371476573981271491742002252513023524034545055566076597107611 000/1 200/1 500 1 000/1 200/1 500
45、1 000/1 200/1 500 1 200/1 500/1 800 1 200/1 500/1 800 1 500/1 800 1 500/1 800 1 500/1 800/2 100 1 500/1 800/2 100 1 500/1 800/2 100/2 400 1 500/1 800/2 100/2 400 1 500/1 800/2 100/2 400/2 700 1 800/2 100/2 400/2 700 1 800/2 100/2 400/2 700 2 100/2 400/2 700 2 100/2 400/2 700 2 100/2 400/2 700 2 400/
46、2 700 A low spot (see 3.15) may be accepted only if the diameter measured at the low spot is not more than 3 mm below the minimum diameter specification. Different specifications may be agreed upon between the supplier and user. 4.3 Lengths of electrodes The lengths of the electrodes (without pin) s
47、hall meet specifications set in Table 2. Table 2 Lengths of electrodes Actual length specifications for normal electrodes lActual length specifications for short electrodes lNominal length Maximum Minimum Maximum Minimum mm1 000 1 050 925 925 800 1 200 1 250 1 100 1 100 975 1 500 1 600 1 400 1 400 1
48、 225 1 800 1 900 1 700 1 700 1 525 2 100 2 225 1 975 1 975 1 825 2 400 2 525 2 275 2 275 2 125 2 700 2 900 2 550 2 550 2 400 The acceptable percentage of short electrodes per delivery should be decided by agreement between the supplier and user. Different length specifications may be agreed upon bet
49、ween the supplier and user. EN 60239:2005 8 9 4.4 Dimensions of sockets The socket taper tangent shall be 1/3 (the slope tangent shall be 1/6). Two types of threaded sockets can be used: those with 4 threads per inch (25,4 mm), (T4) for electrodes of nominal diameter from 75 mm to 750 mm; those with 3 threads per inch (25,4 mm), (T3) for electrodes of nominal diameter from 225 mm to 550 mm. Two different socket depths can be used for T4 sockets of electrode
