1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 14174:2012Welding consumables Fluxesfor submerged arc weldingand electroslag welding Classification (ISO 14174:2012)BS EN ISO 14174:2012 BRITISH STANDARDNational forewo
2、rdThis British Standard is the UK implementation of EN ISO 14174:2012. It supersedes BS EN 760:1996, which is withdrawn.The UK participation in its preparation was entrusted to T e c h n i c a l C o m m i t t e e W E E / 3 9 , W e l d i n g c o n s u m a b l e s .A list of organizations represented
3、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. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 59126
4、6 ICS 25.160.20 Compliance 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 March 2012.Amendments issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NO
5、RME EUROPENNE EUROPISCHE NORM EN ISO 14174 February 2012 ICS 25.160.20 Supersedes EN 760:1996English Version Welding consumables - Fluxes for submerged arc welding and electroslag welding - Classification (ISO 14174:2012) Produits consommables pour le soudage - Flux pour le soudage larc sous flux et
6、 le soudage sous laitier - Classification (ISO 14174:2012) Schweizustze - Pulver zum Unterpulverschweien und Elektroschlackeschweien - Einteilung (ISO 14174:2012) This European Standard was approved by CEN on 28 January 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
7、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 member. This
8、 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 versions. CEN membe
9、rs are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
10、Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nation
11、al Members. Ref. No. EN ISO 14174:2012: EBS EN ISO 14174:2012 EN ISO 14174:2012 (E) 3 Foreword This document (EN ISO 14174:2012) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding” the secretariat of which i
12、s 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 August 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. Attention is drawn to the possibilit
13、y 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 EN 760:1996. According to the CEN/CENELEC Internal Regulations, the national standards organizati
14、ons of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal
15、, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14174:2012 has been approved by CEN as a EN ISO 14174:2012 without any modification. BS EN ISO 14174:2012ISO 14174:2012(E) ISO 2012 All rights reserved iiiContents PageForewor
16、d ivIntroduction v1 Scope 12 Normative references . 13 Classification 14 Symbols . 24.1 Symbol for the product/process . 24.2 Symbol for method of manufacture 24.3 Symbol for type of flux, characteristic chemical constituents . 24.4 Symbol for applications, flux class 24.5 Symbol for metallurgical b
17、ehaviour . 44.6 Symbol for type of current 64.7 Symbol for diffusible hydrogen content in deposited weld metal (class 1 fluxes only) 75 Particle size range . 76 Rounding procedure . 87 Retest 88 Technical delivery conditions 89 Marking . 810 Designation . 9Annex A (informative) Characteristic chemic
18、al constituents of flux Determination from elemental analysis .10Annex B (informative) Description of flux types 12Bibliography .15BS EN ISO 14174:2012ISO 14174:2012(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member
19、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 organizations, governmental
20、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.International Standards are drafted in accordance with the rules given in the ISO/IEC Directives
21、, Part 2.The main task of technical 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 cas
22、ting a vote.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.ISO 14174 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Sub
23、committee SC 3, Welding consumables.This second edition cancels and replaces the first edition (ISO 14174:2004), which has been technically revised.Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 3, via your nat
24、ional standards body. A complete listing of these bodies can be found at www.iso.org.iv ISO 2012 All rights reservedBS EN ISO 14174:2012ISO 14174:2012(E)IntroductionThis International Standard is based on EN 760:19961. ISO 2012 All rights reserved vBS EN ISO 14174:2012BS EN ISO 14174:2012Welding con
25、sumables Fluxes for submerged arc welding and electroslag welding Classification1 ScopeThis International Standard specifies requirements for classification of fluxes for submerged arc welding and electroslag welding for joining and overlay welding using wire electrodes, tubular cored electrodes, an
26、d strip electrodes.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) applies.ISO 3690,
27、 Welding and allied processes Determination of hydrogen content in arc weld metalISO 14171, Welding consumables Solid wire electrodes, tubular cored electrodes and electrode/flux combinations for submerged arc welding of non alloy and fine grain steels ClassificationISO 14343, Welding consumables Wi
28、re electrodes, strip electrodes, wires and rods for arc welding of stainless and heat resisting steels ClassificationISO 80000-1:2009, Quantities and units Part 1: General3 ClassificationFluxes for submerged arc welding and electroslag welding for joining and overlay welding are granular, fusible pr
29、oducts of mainly mineral origin, which are manufactured by various methods. Fluxes influence the chemical composition and the mechanical properties of the weld metal.The classification of the fluxes is divided into seven parts:1) the first part gives a symbol indicating the product/process (see 4.1)
30、;2) the second part gives a symbol indicating the method of manufacture (see 4.2);3) the third part gives a symbol indicating the type of flux, characteristic chemical constituents (see Table 1);4) the fourth part gives a symbol indicating the applications, flux class (see 4.4);5) the fifth part giv
31、es a symbol indicating the metallurgical behaviour (see 4.5);6) the sixth part gives a symbol indicating the type of current (see 4.6);7) the seventh part gives a symbol indicating the diffusible hydrogen content of deposited weld metal (see Table 6) only applicable for class 1 fluxes.In order to pr
32、omote the use of this International Standard, the classification is divided into two sections.a) Compulsory section.This section includes the symbols for process, method of manufacture, characteristic chemical constituents, and applications, i.e. the symbols defined in 4.1, 4.2, 4.3, and 4.4.b) Opti
33、onal section.INTERNATIONAL STANDARD ISO 14174:2012(E) ISO 2012 All rights reserved 1BS EN ISO 14174:2012ISO 14174:2012(E)This section includes the symbols for the metallurgical behaviour, type of current, and diffusible hydrogen, i.e. the symbols defined in 4.5, 4.6, and 4.7.4 Symbols4.1 Symbol for
34、the product/processThe symbol for the flux used in submerged arc welding for joining and overlay welding shall be the letter S and for the flux used in electroslag welding for joining and overlay welding shall be the letters ES.4.2 Symbol for method of manufactureThe symbol below indicates the metho
35、d of manufacture: F: fused flux; A: agglomerated flux; M: mixed flux.Fused fluxes are made by melting and granulating. Agglomerated fluxes are bound, granular mixtures of finer raw materials. Mixed fluxes comprise all fluxes which, after fusing or agglomerating, are mixed with one or more additional
36、 components or fluxes.For particle size requirements in marking, see Clause 5.4.3 Symbol for type of flux, characteristic chemical constituentsThe symbols in Table 1 indicate the type of flux in accordance with the characteristic chemical constituents. Elemental analysis shall be performed on repres
37、entative samples of the flux. Any suitable analytical technique may be used, but in cases of dispute reference shall be made to established methods. Based on the elemental analysis of the flux, the characteristic chemical constituents of the flux can be determined.Examples of such determinations are
38、 shown in Annex A.4.4 Symbol for applications, flux class4.4.1 GeneralA given flux may carry more than one class as specified in 4.4.2 to 4.4.5.4.4.2 Flux class 1These are fluxes for submerged arc welding of non alloy and fine grain steels, high-strength steels, creep-resisting steels, and atmospher
39、ic corrosion-resisting steels.In general, the fluxes do not contain alloying elements, other than Mn and Si, thus the weld metal analysis is predominantly influenced by the composition of the wire/strip electrode and metallurgical reactions. The fluxes are suitable for joint welding and/or overlay w
40、elding. In the case of joint welding, some fluxes can be applied for both multi-run and single-run and/or two-run technique.In the flux designation, the digit 1 indicates class 1.2 ISO 2012 All rights reservedBS EN ISO 14174:2012ISO 14174:2012(E)Table 1 Symbol for type of flux, characteristic chemic
41、al constituentsabSymbol (description)Characteristic chemical constituentsLimit of constituent % (by mass)MS (Manganese-silicate)MnO + SiO2CaO50 15CS (Calcium-silicate)CaO + MgO + SiO2CaO + MgO55 15CG (Calcium-magnesium)CaO + MgO CO2Fe5 to 50 2 10CB (Calcium-magnesium basic)CaO + MgO CO2Fe30 to 80 2
42、10CG-I (Calcium-magnesium with iron)CaO + MgO CO2Fe5 to 45 2 15 to 60CB-I (Calcium-magnesium basic with iron)CaO + MgO CO2Fe10 to 70 2 15 to 60GS (Magnesium-silicate)MgO + SiO2Al2O3CaO + CaF242 20 14ZS (Zirconium-silicate)ZrO2+ SiO2 + MnO ZrO245 15RS (Rutile-silicate)TiO2+ SiO2TiO250 20AR (Aluminate
43、-rutile)Al2O3+ TiO240BA (Basic-alumina)Al2O3+ CaF2+ SiO2CaO SiO255 8 20AAS (Acid-aluminium-silicate)Al2O3+ SiO2CaF2+ MgO50 20AB (Aluminate-basic)Al2O3+ CaO + MgO Al2O3CaF240 20 22AS (Aluminate-silicate)Al2O3+ SiO2+ ZrO2CaF2+ MgO ZrO240 30 5AF (Aluminate-fluoride-basic)Al2O3+ CaF270FB (Fluoride-basic
44、)CaO + MgO + CaF2+ MnO SiO2CaF250 20 15ZcAny other agreed compositionaCalculations are made as shown in Annex A.bA description of the characteristics of each of the types of flux is given in Annex B.cFluxes for which the chemical composition is not listed shall be symbolized similarly and prefixed b
45、y the letter Z. The chemical composition ranges are not specified and it is possible that two fluxes with the same Z classification are not interchangeable. ISO 2012 All rights reserved 3BS EN ISO 14174:2012ISO 14174:2012(E)4.4.3 Flux classes 2 and 2BThese are fluxes for joint welding of stainless a
46、nd heat-resisting steels and/or nickel and nickel alloys and corrosion-resistant overlay welding1). Fluxes of these classes can contain alloying elements compensating for the burn-out.In the flux designation, the digit 2 is used to indicate class 2 fluxes mainly suited for joint welding, but which c
47、an also be used for strip cladding. 2B is used for fluxes especially designed for strip cladding.4.4.4 Flux class 3These are fluxes mainly for hardfacing overlay welding by transfer of alloying elements from the flux, such as C, Cr or Mo.In the flux designation, the digit 3 indicates class 3.4.4.5 F
48、lux class 4These are other fluxes for which classes 1 to 3 are not applicable, e.g. fluxes for copper alloys.In the flux designation, the digit 4 indicates class 4.4.5 Symbol for metallurgical behaviour4.5.1 GeneralThe metallurgical behaviour of a flux is characterized by the contribution (pick-up a
49、nd/or burn-out) of alloying elements. Concerning fluxes for joining, the contribution is the difference between the chemical composition of the all-weld metal deposit and the composition of the specified electrode. Concerning fluxes for overlay welding, the contribution is the difference between the chemical composition of the deposited weld metal of the last bead/layer and the chemical composition of the specified wire/strip electrode.4.5.1.1 Metallurgical behaviour, flux class 1For
