1、November 2013 Translation by DIN-Sprachendienst.English price group 7No 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).IC
2、S 25.160.20!%)“2069604www.din.deDDIN EN ISO 6847Welding consumables Deposition of a weld metal pad for chemical analysis (ISO 6847:2013);English version EN ISO 6847:2013,English translation of DIN EN ISO 6847:2013-11Schweizustze Auftragung von Schweigut zur Bestimmung der chemischen Zusammensetzung(
3、ISO 6847:2013);Englische Fassung EN ISO 6847:2013,Englische bersetzung von DIN EN ISO 6847:2013-11Produits consommables pour le soudage Excution dun dpt de mtal fondu pour lanalyse chimique (ISO 6847:2013);Version anglaise EN ISO 6847:2013,Traduction anglaise de DIN EN ISO 6847:2013-11SupersedesDIN
4、EN ISO 6847:2002-02www.beuth.deDocument comprises 10 pagesIn case of doubt, the German-language original shall be considered authoritative.10.13 DIN EN ISO 6847:2013-11 2 A comma is used as the decimal marker. National foreword This document (EN ISO 6847:2013) has been prepared by Technical Committe
5、e ISO/TC 44 “Welding and allied processes” in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Schweien und verwandte Verfahren (Welding and Allied Processes S
6、tandards Committee), Working Committee NA 092-00-03 AA Schweizustze (DVS AG W 5). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 6947 DIN EN ISO 6947 ISO 14175 DIN EN ISO 14175 Amendments This standard differs from DIN EN ISO 6847:2002
7、-02 as follows: a) Annex ZA has been deleted; b) the standard has been editorially revised. Previous editions DIN 32525-2: 1979-08 DIN EN 26847: 1994-04 DIN EN ISO 6847: 2002-02 National Annex NA (informative) Bibliography DIN EN ISO 6947, Welding and allied processes Welding positions DIN EN ISO 14
8、175, Welding consumables Gases and gas mixtures for fusion welding and allied processes EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6847 June 2013 ICS 25.160.20 Supersedes EN ISO 6847:2001English Version Welding consumables - Deposition of a weld metal pad for chemical analysis (ISO 684
9、7:2013) Produits consommables pour le soudage - Excution dun dpt de mtal fondu pour lanalyse chimique (ISO 6847:2013) Schweizustze - Auftragung von Schweigut zur Bestimmung der chemischen Zusammensetzung (ISO 6847:2013) This European Standard was approved by CEN on 21 April 2013. CEN members are bou
10、nd 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 C
11、EN-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
12、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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
13、Luxembourg, 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 Management Centre: Avenue Marnix 17, B-1000 Brussels 2013
14、 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 6847:2013: EContents PageForeword .3Introduction 41 Scope . 52 Normative references 53 Base metal . 53.1 Type 53.2 Dimensions . 53.3 Surface condition 54 Method for preparing the
15、 weld metal pad . 64.1 Drying of the welding consumables . 64.2 Welding position 64.3 Type of current . 64.4 Welding conditions 64.5 Welding method . 65 Weld metal pad size . 76 Sampling 8DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 2 Foreword This document (EN ISO 6847:2013) has been prepared by Te
16、chnical Committee IIW “International Institute of Welding” in collaboration with Technical Committee CEN/TC 121 “Welding and allied processes” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text
17、or by endorsement, at the latest by December 2013, and conflicting national standards shall be withdrawn at the latest by December 2013. 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 responsi
18、ble for identifying any or all such patent rights. This document supersedes EN ISO 6847:2001. 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,
19、 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Ki
20、ngdom. Endorsement notice The text of ISO 6847:2013 has been approved by CEN as EN ISO 6847:2013 without any modification. DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 3 IntroductionISO 6847:1985 addressed only the deposition of a weld metal pad for chemical analysis using covered electrodes for man
21、ual arc welding. This pad preparation was expensive to execute. IIW Commission II conducted testing of several methods of weld pad preparation that were less costly to execute than that of ISO 6847:1985 and yet produced equivalent results. Further, these methods were applicable to solid wires for ga
22、s shielded welding, to tubular cored wires for arc welding with or without gas shielding, and to wires and fluxes for submerged arc welding, as well as being applicable to covered electrodes. Accordingly, this revision simplifies weld pad preparation and broadens the range of welding processes and f
23、iller metals.DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 4 1 ScopeThis International Standard specifies the procedure to be used for deposition of a weld metal pad for chemical analysis. This International Standard applies to deposition of a weld metal pad by use of covered electrodes, wire electro
24、des for gas shielded metal arc welding, tubular cored electrodes for gas shielded metal arc welding and for non-gas shielded metal arc welding, tubular cored rods for gas tungsten arc welding, and wire-flux combinations for submerged arc welding. This International Standard is applicable to welding
25、consumables for non-alloy and fine grain steels, high strength steels, creep-resisting steels, stainless and heat-resisting steels, nickel and nickel alloys, and copper and copper alloys.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document a
26、nd 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 amendments) applies.ISO 6947, Welds Working positions Definitions of angles of slope and rotationISO 14175, Welding con
27、sumables Gases and gas mixtures for fusion welding and allied processes3 Base metal3.1 TypeThe base metal shall have a composition similar to that of the deposited metal or be a weldable carbon manganese structural steel with a carbon content of less than 0,2 %.3.2 DimensionsThe minimum dimensions o
28、f the base metal are given in Table 1.3.3 Surface conditionThe surface of the base metal on to which the weld metal is to be deposited shall be cleaned by grinding or other means in order to remove any rust, scale, grease, or paint.DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 5 Table 1 Minimum dimen
29、sions of the base metalDimensions in millimetresWelding consumables Size of welding consumablesPlate sizeaLength ThicknessCovered electrodes and tubular cored rods for gas tungsten arc welding1,6 but 4 4 but 855 6510Wire electrodes for gas shielded arc welding0,6 but 2,5 100 10Tubular cored electrod
30、es for gas shielded or non-gas shielded arc welding0,6 but 4 100 10Wire-flux combinations for sub-merged arc welding1,2 but 4 4 but 6,4200 30015aPlate width should be appropriate for the pass sequence method chosen (see Figure 1).4 Method for preparing the weld metal pad4.1 Drying of the welding con
31、sumablesDrying of the welding consumables (covered electrodes, fluxes for submerged arc welding) shall be performed using conditions indicated by the manufacturer. Tubular cored electrodes on metal supports may be dried.4.2 Welding positionThe weld metal pad shall be welded in the flat position (PA
32、position in ISO 6947).4.3 Type of currentThe weld metal shall be deposited using the type of current (and, if appropriate, the polarity) indicated by the manufacturer. However, if both DC operation and AC operation are claimed, then the test shall be performed using AC.4.4 Welding conditionsThe weld
33、ing conditions used, such as current, voltage, welding speed, etc., shall be in accordance with the limits specified in the relevant standard. If the welding conditions are not specified in the relevant standard, each pass shall be welded with a welding current of 70 % to 90 % of the maximum current
34、 indicated by the manufacturer. The welding conditions used to produce the weld metal pad shall be reported.4.5 Welding method4.5.1 GeneralVarious methods for building up a weld metal pad have been shown to be acceptable and the weld metal pad shall be prepared using one of the methods shown in Figu
35、re 1. After the welding of each pass, the test piece may be cooled in water for about 30 s, then dried sufficiently before proceeding with the DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 6 next pass. The slag shall be removed from each pass. The welding shall be performed by alternating the directi
36、on of welding for each layer.Base metal Method ABase metal Method BBase metal Method CBase metal Method DBase metal Method EBase metal Method FaBase metal Method GaaThe blocks on both sides of the weld deposits of methods F and G are copper.Figure 1 Examples of pass sequence4.5.2 Covered electrodesT
37、he arc length shall be maintained as short as possible such that the arc remains stable. The maximum weave width shall be 2,5 times the diameter of the electrode core.4.5.3 Solid wires and tubular cored wiresThe number and size of the beads will vary according to the size of the electrodes and the w
38、idth of the weave as well as the amperage employed. The electrode extension (stickout) shall be as indicated by the manufacturer 3 mm. The weld metal pad shall be deposited using the type of shielding gas indicated by the manufacturer; otherwise, the type of shielding gas used shall be selected from
39、 those specified in ISO 14175. In the case of submerged arc welding, the appropriate flux shall be used.5 Weld metal pad sizeThe minimum dimensions of the weld metal pad shall be as given in Table 2.DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 7 6 SamplingThe surface oxide on the sampling portion of
40、 the specimen for chemical analysis shall be removed by machining or grinding. When taking chips by a milling, a shaping, or a drilling machine, the use of cutting fluid shall be avoided. The specimen for chemical analysis shall be taken from the weld metal of the fifth layer or higher. The specimen
41、 shall not include the start or the crater.Table 2 Minimum dimensions of the weld metal padWelding consumablesSize of welding consumables mmSampling portionMinimum number of weld layersWidth mmLength mmCovered electrodes and tubular cored rods for gas tungsten arc welding1,6 but 2,6 2,6 but 5 5 but 812 12 1230 40 555 5 5Wire electrodes for gas shielded arc welding0,6 but 2,5 12 80 5Tubular cored electrodes for gas shielded or non-gas shielded arc welding0,6 but 4 12 80 5Wire-flux combinations for submerged arc welding1,2 but 6,4 12 150 5DIN EN ISO 6847:2013-11 EN ISO 6847:2013 (E) 8
