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1、BRITISH STANDARD BS EN ISO 17652-2:2003 Welding Test for shop primers in relation to welding and allied processes Part 2: Welding properties of shop primers The European Standard EN ISO 17652-2:2003 has the status of a British Standard ICS 25.160.10 ? BS EN ISO 17652-2:2003 This British Standard was
2、 published under the authority of the Standards Policy and Strategy Committee on 22 May 2003 BSI 22 May 2003 ISBN 0 580 41916 9 National foreword This British Standard is the official English language version of EN ISO 17652-2:2003. It is identical with ISO 17652-2:2003. It supersedes BS 6084-1:1997
3、 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/42, Prefabrication primers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards
4、 which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This pub
5、lication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible internati
6、onal/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO t
7、itle page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17652-2 May 2003 ICS 25.1
8、60.10 English version Welding - Test for shop primers in relation to welding and allied processes - Part 2: Welding properties of shop primers (ISO 17652-2:2003) Soudage - Essai sur peintures primaires en relation avec le soudage et les techniques connexes - Partie 2: Proprits relatives au soudage d
9、es peintures primaires (ISO 17652- 2:2003) Schweien - Prfung von Fertigungsbeschichtungen fr das Schweien und fr verwandte Prozesse - Teil 2: Schweieigenschaften von Fertigungsbeschichtungen (ISO 17652-2:2003) This European Standard was approved by CEN on 2 January 2003. CEN members are bound to com
10、ply 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 Management
11、 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 Management Centre has the same status as the offici
12、al versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE F
13、OR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2003 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17652-2:2003 E EN ISO 17652-2:2003 (E)
14、2 Contents page Foreword. 3 1Scope 4 2Normative references 4 3Terms and definitions. 5 4Rating test 5 4.1Principle . 5 4.2Preparation of test piece 5 4.3Procedure. 5 4.3.1Welding 5 4.3.2 Breaking of the test weld. 7 4.4Examination and determination of porosity. 7 4.5Test report 8 5Weldability test 8
15、 5.1Principle . 8 5.2Preparation of test piece 8 5.3Procedure. 9 5.3.1General. 9 5.3.2 Tack welding. 9 5.3.3Welding 10 5.4Weld evaluation. 10 5.4.1Visual examination 10 5.4.2Internal examination . 11 5.5Test report 11 Annex A (informative) Example of a test report for rating test of weld properties
16、of shop primers 13 Annex ZA (informative) Corresponding International and European Standards for which equivalents are not given in the text 14 EN ISO 17652-2:2003 (E) 3 Foreword This document (EN ISO 17652-2:2003) has been prepared by Technical Committee CEN/TC 121 “Welding“, the secretariat of whi
17、ch is held by DS, in collaboration with Technical Committee ISO/TC 44 “Welding and allied processes”. 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 November 2003, and conflicting national standa
18、rds shall be withdrawn at the latest by November 2003. EN ISO 17652 consists of the following parts, under the general title: Welding Test for shop primers in relation to welding and allied processes: - Part 1: General requirements - Part 2: Welding properties of shop primers - Part 3: Thermal cutti
19、ng - Part 4: Emission of fumes and gases Annexes A and ZA are informative. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Ger
20、many, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. EN ISO 17652-2:2003 (E) 4 1Scope This part of this European Standard describes tests for assessing the influence of shop primers on the welda
21、bility. The following tests are detailed: a)Rating test This screening test provides a method of assessing the relative weldability of a shop primer of a specified thickness by making a standard weld and subsequently evaluating the severity of the resulting porosity. Rating tests are suitable for de
22、claration by suppliers of the influence of particular shop primers and similar purposes; b)Weldability test This test describes a method for evaluating the weldability of welding consumables and shop primer combinations, using various arc welding processes. A standard size fillet is produced that en
23、ables comparison to be made. An overall assessment of the quality of the resultant weld is made. Weldability tests may be more closely related to actual conditions during production. For precaution for protection of health, safety and environment during testing, see EN ISO 17652-1. 2Normative refere
24、nces This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of the
25、se publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 439, Welding consumables - Shielding gases for arc welding and cutting. EN 440, Welding c
26、onsumables - Wire electrodes and deposits for gas shielded metal arc welding of non alloy and fine grain steels - Classification. EN 10025:1990, Hot rolled products of non-alloy structural steels Technical delivery conditions. EN 10238, Automatically blast-cleaned and automatically prefabricated pri
27、med structural steel products. EN 10278, Dimensions and tolerances of bright steel products. EN ISO 4063, Welding and allied processes Nomenclature of processes and reference numbers (ISO 4063:1998). EN ISO 6947, Welds - Working positions - Definitions of angles of slope and rotation (ISO 6947:1993)
28、. EN ISO 2808, Paints and varnishes - Determination of film thickness (ISO 2808:1999). EN ISO 8501-1:2001, Preparation of steel substrates before application of paints and related products - Visual assessment of surface cleanliness - Part 1: Rust grades and preparation grades of uncoated steel subst
29、rates and of steel substrates after overall removal of previous coatings (ISO 8501-1:1988). prEN ISO 15609-1:2000, Specification and approval of welding procedures for metallic materials - Welding procedure specification - Part 1: Arc welding (ISO/DIS 15609-1:2000). EN ISO 17652-1:2003, Welding - Te
30、st for shop primers in relation to welding and allied processes - Part 1: General requirements (ISO 17652-1:2003). EN ISO 17652-2:2003 (E) 5 3Terms and definitions For the purposes of this European Standard, the terms and definitions in EN ISO 17652-1:2003 apply. 4Rating test 4.1Principle This test
31、provides a method of assessing the relative weldability of shop primers of a specified thickness by making a standard weld over a range of shop primers and subsequently evaluating the severity of the resulting porosity. Only one welding procedure is prescribed, using metal active gas welding (proces
32、s 135 in accordance with EN ISO 4063). The joint configuration and close fit-up are designed to give significant levels of porosity for reasons of differentiation and reproducibility. The standard does not specify limits for acceptability as these depend on the practical application. It is expected
33、that levels of porosity during practical applications will be lower than the levels measured during testing. 4.2Preparation of test piece 10 test pieces shall be prepared for each shop primer. Each piece shall consist of two bright drawn mild steel plates in accordance with EN 10278. The dimensions
34、of the test pieces are as follows: - 20 mm 80 mm 200 mm; - 12 mm 50 mm 200 mm. The parts shall have smooth, flat, undamaged surfaces, and any burrs on the edges shall be removed to ensure a good fit-up. Both components shall be degreased and the larger component shall be coated on one side with shop
35、 primer prior to testing. The thickness of the shop primer shall be uniform and in accordance with the suppliers recommendation. Unless otherwise specified, the specimens can be welded after a drying period of at least 10 days at a surface temperature above 10oC but below 40oC and at a minimum air h
36、umidity of 50 %. Alternative conditions for storage shall be monitored and reported in the test report. The thickness shall be checked, e.g. by use of small smooth steel plates or glass plates, see also EN ISO 2808. NOTEFor protection of the environment the degreasing of the test pieces should be do
37、ne by immersing them in non-cycle hydrocarbon, aqueos cleaning agents or equivalent non-halogenated or halogen-free organic degreasing agent. 4.3Procedure 4.3.1Welding The specimens shall be clamped in a hydraulic vice over their entire length, the clamping force amounting to 10 kN 5 %, see Figure 1
38、. At the point indicated soft-annealed copper wires of 2 mm diameter should be inserted. The vice shall be tilted to an angle of 45o so that welding can proceed in the welding position PA in accordance with EN ISO 6947. Welding parameters shall be as stated in Table 1. EN ISO 17652-2:2003 (E) 6 Tabl
39、e 1 - Rating test welding parameters ParameterValue Welding process135, see EN ISO 4063 Current250 A 5 % Voltage30 V 5 % Welding speed300 mm/min 5 % Shielding gasC1: 100% CO2, see EN 439 Gas flow rate15 l/min to 20 l/min Gas cup diameter16 mm to 19 mm Stick out18 mm to 20 mm Consumable, typeG3 Si 1,
40、 see EN 440 Consumable, diameter1,2 mm Polarity+ on electrode All dimensions in millimetres Key A Horizontal axis during welding B Primed surface C Soft-annealed copper wires 2 mm D Weld seam breakage angle E Bright drawn steel plate (20 80 200) F Bright drawn steel plate (12 50 200) G Hydraulic cla
41、mps, 10 kN Figure 1 - Arrangement of test pieces in rating test EN ISO 17652-2:2003 (E) 7 4.3.2Breaking of the test weld Break open the test weld using three-point loading as shown in Figure 2. Reject the sample if the fracture does not bisect the weld joint. The weld shall be broken at a temperatur
42、e of approximately 150oC to 250oC so that the pore boundaries are clearly visible. Key A Three-point loading Figure 2 Breaking of the test weld NOTEThe weld can usually be broken without pre-notching as shown in Figure 2. In case the fracture does not occur, the bisecting angle of the weld pre-notch
43、ing by sawing as shown in Figure 2 should be used. 4.4Examination and determination of porosity Do not take into consideration pores where the largest diameter is less than 0,5 mm. Perform the evaluation at a magnification in which pores larger than 0,5 mm (largest diameter) can be measured. However
44、, the magnification shall be no less than 10 times. Evaluate a length of 100 mm, excluding 60 mm from the start and 40 mm from the end of the specimen. The following shall be determined and recorded: - the number of pores larger than 0,5 mm n; - the total pore area determined F (mm2); - the mean are
45、a of individual pores F/n (mm2). NOTEArea of a single pore can usually be determined from a measurement of the largest and smallest diameter, assuming an elliptical shape. EN ISO 17652-2:2003 (E) 8 4.5Test report A report shall be compiled for each test, detailing, as a minimum the following: a) tha
46、t the test has been carried out in accordance with this standard; b) the customer and contract number, if appropriate; c) the testing organisation, if appropriate; d) the location and date of test; e) an identification of the test piece(s); f) shop primer designation; g) the welding process and cons
47、umables, as appropriate; h) the coating thickness applied (as supplied); i) the surface condition before welding; j) the welding parameters (WPS or other document reference); k) the weld evaluation criteria; l) the number of pores larger than 0,5 mm n; m) the total pore area determined F (mm2); n) t
48、he mean area of individual pores F/n (mm2). Annex A provides an example of a test report. 5Weldability test 5.1Principle This test details conditions for assessment of the weldability of a shop primer coating on steel, using arc welding processes. The conditions achieved by applying a force at speci
49、fied positions along the joint result in a fillet joint with “zero gap”. It is considered that this results in porosity levels are not encountered in practice (unless zero gap is specified and achieved). However, by setting conditions known to give “worst-case” pore formation, the test is reproducible and can be used to assess the weldability in a consistent way. A fillet weld has been chosen as typical of the type of weld encountered in pr