《BS-EN-ISO-14372-2001.pdf》由会员分享,可在线阅读,更多相关《BS-EN-ISO-14372-2001.pdf(14页珍藏版)》请在三一文库上搜索。
1、BRITISH STANDARD BS EN ISO 14372:2001 Welding consumables Determination of moisture resistance of manual metal arc welding electrodes by measurement of diffusible hydrogen The European Standard EN ISO 14372:2001 has the status of a British Standard ICS 25.160.20 NO COPYING WITHOUT BSI PERMISSION EXC
2、EPT AS PERMITTED BY COPYRIGHT LAW BS EN ISO 14372:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 13 November 2001 BSI 13 November 2001 IS
3、BN 0 580 38671 6 National foreword This British Standard is the official English language version of EN ISO 14372:2001. It is identical with ISO 14372:2000. The UK participation in its preparation was entrusted to Technical Committee WEE/39, Welding consumables, which has the responsibility to: A li
4、st of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “Internatio
5、nal Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a Briti
6、sh Standard 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 the UK interests informed; monitor related international and
7、 European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN ISO title page, the EN ISO foreword page, the ISO title page, pages ii to iv, pages 1 to 4, an inside back cover and a back cover. The BSI copyright date displa
8、yed 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 14372 October 2001 ICS 25.160.20 English version Welding consumables - Determination of moisture resistance of manual m
9、etal arc welding electrodes by measurement of diffusible hydrogen (ISO 14372:2000) Produits consommables pour le soudage - Dtermination de la reprise dhumidit des lectrodes utilises en soudage manuel larc avec lectrode enrobe, par mesurage de lhydrogne diffusible (ISO 14372:2000) Schweizustze - Best
10、immung der Feuchteresistenz von Elektroden fr das Lichtbogenhandschweien durch Messung des diffusiblen Wasserstoffs (ISO 14372:2000) This European Standard was approved by CEN on 11 October 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions
11、 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 Centre or to any CEN member. This European Standard exists in three officia
12、l 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 official versions. CEN members are the national standards bodies of Austria, Belgi
13、um, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: ru
14、e de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14372:2001 E EN ISO 14372:2001 (E) Foreword The text of the International Standard from Technical Committee ISO/TC 44 “ Welding and allied pr
15、ocesses“ of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 121 “Welding“, the secretariat of which is held by DS. This European Standard shall be given the status of a national standard, either by publication of an i
16、dentical text or by endorsement, at the latest by April 2002, and conflicting national standards shall be withdrawn at the latest by April 2002. NOTE FROM CMC The foreword is susceptible to be amended on reception of the German language version. The confirmed or amended foreword, and when appropriat
17、e, the normative annex ZA for the references to international publications with their relevant European publications will be circulated with the German version. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement t
18、his European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO 14372:2000 has been
19、 approved by CEN as a European Standard without any modification. Reference number ISO 14372:2000(E) INTERNATIONAL STANDARD ISO 14372 First edition 2000-09-15 Welding consumables Determination of moisture resistance of manual metal arc welding electrodes by measurement of diffusible hydrogen Produit
20、s consommables pour le soudage Dtermination de la reprise dhumidit des lectrodes utilises en soudage manuel larc avec lectrode enrobe, par mesurage de lhydrogne diffusible ii EN ISO 14372:2001 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national
21、 standards bodies (ISO member 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. Internationa
22、l organizations, governmental 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
23、given in the ISO/IEC Directives, Part 3. 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 casting a vote. Attention is drawn to the possib
24、ility that some of the elements of this International Standard may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 14372 was prepared in collaboration with the International Institute of Welding which has be
25、en approved by the ISO Council as an international standardizing body in the field of welding. EN ISO 14372:2001 iv Introduction This test method is based on procedures originally put forward within Sub-Commission IIA of the IIW by the delegation from Argentina. It has subsequently been evaluated in
26、 a round robin exercise within Subcommission IIA, and the present document, developed by the United Kingdom delegation, takes into account the results of that work. EN ISO 14372:2001 1 Welding consumables Determination of moisture resistance of manual metal arc welding electrodes by measurement of d
27、iffusible hydrogen 1Scope This test method is intended to enable reliable classification, by 24 h exposure to humid air and subsequent diffusible hydrogen testing, of manual metal arc electrode coatings as standard (ST) or moisture resistant (MR). 2Normative reference The following normative documen
28、t contains provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encourag
29、ed to investigate the possibility of applying the most recent edition of the normative document indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 3690:1)
30、, Welding and allied processes Determination of hydrogen content in ferritic steel arc weld metal. 3Principle Weld deposit hydrogen analysis using standard techniques on samples deposited using electrodes exposed to a moist atmosphere 27 C, 80 % RH2?. It is the exposure of the electrodes which is th
31、e main subject of this International Standard. After drying (if applicable) the electrodes are exposed to an air atmosphere of controlled temperature and humidity by enclosing them in a box containing a saturated solution of ammonium sulfate. 4Equipment 4.1Humidity box, of acrylic, or similar inert
32、material. It consists of a box within which test electrodes, a thermometer and protecting tubes (maximum 1,5?the overall diameter of the electrode, and appropriate length to fit) for holding the electrodes after exposure, can be suspended over a saturated solution of ammonium sulfate. See Figure 1.
33、4.2Temperature control cabinet, capable of maintaining the temperature at 27 C?1 C. Good results have been achieved using a draught-proof enclosure heated by low power (40 W) light bulbs, controlled by a calibrated thermostat, with a fan for circulating air to maintain uniform air temperature. 1)To
34、be published. (Revision of ISO 3690:1977) 2? It is not necessary to measure relative humidity within the humidity box. The test conditions are the temperature and the presence of the saturated salt bath. Well-established physical principles relate the relative humidity to these two conditions. It is
35、 essential that any attempt to measure relative humidity, if used, does not cause air circulation within the box. EN ISO 14372:2001 2 Dimensions in millimetres Key 1Packing3Electrodes5Saturated ammonium sulfate solution 2Protecting tubes4Thermometer6Plugs Figure 1 Sketch of a humidity box EN ISO 143
36、72:2001 3 5Procedure 5.1Preparation of humidity box 5.1.1Wash all tubes with distilled water. 5.1.2Air dry tubes. 5.1.3Seal one end of each tube with a plug. 5.1.4Dissolve 1,3 kg anhydrous ammonium sulfate in 1 500 ml distilled water at 40 C to 45 C. 5.1.5Fill the humidity box (4.1) with solution (s
37、ee 5.1.4) to a depth of 20 mm to 25 mm3?. 5.1.6A finger moistened with silicone oil may be run around the box just above solution level. (This helps prevent crystals creeping up the walls.) 5.1.7Allow solution to cool to 27 C?1 C. 5.1.8Insert protecting tubes, second end plugs (not fitted in tubes)
38、and thermometer, and close lid on box. 5.2Preparation of temperature control cabinet 5.2.1Set the temperature to 27 C?1 C. 5.2.2Hold the temperature at 27 C?1 C for at least 90 min. 5.3Pre-conditioning of humidity box Keep the prepared and sealed box in the temperature control cabinet for at least 4
39、 h, with the temperature maintained at 27 C?1 C. 5.4Electrode preparation 5.4.1Mark coatings near the stub end with a unique identity. 5.4.2Predry (if appropriate) according to manufacturers instructions. 5.4.3If electrodes have been dried at elevated temperature, seal in glass tubes using tightly f
40、itting rubber bungs or by melting the ends, or place in a desiccator to cool to room temperature. 5.5Exposure of electrodes in humidity box 5.5.1Open the temperature control cabinet (4.2) door. 5.5.2Open humidity box lid. 5.5.3Transfer electrodes from glass tubes, desiccator or manufacturers packagi
41、ng, as appropriate, to humidity box as indicated in Figure 1. 3? If the height of solution drops, transfer solution to a mixing vessel, add further saturated solution or distilled water at 45 C, mixing thoroughly. Refill the box to a depth of 25 mm, ensuring that undissolved ammonium sulfate is pres
42、ent but does not reduce the surface area of the liquid when restored to the operating temperature of 27 C. EN ISO 14372:2001 4 Items 5.5.1 to 5.5.3 shall be completed within 90 s. 5.5.4Replace humidity box lid. 5.5.5Close temperature control cabinet door. Items 5.5.4 and 5.5.5 shall be completed wit
43、hin a further 30 s. 5.5.6Expose electrodes at 27 C?1 C for 24 h. 5.6Measurement of weld deposit hydrogen 5.6.1Open temperature control cabinet door. 5.6.2Open humidity box lid. 5.6.3Insert electrodes into protection tubes, seal ends with plugs and remove from temperature control cabinet. Items 5.6.2
44、 and 5.6.3 shall be completed within 60 s. 5.6.4Close humidity box and temperature control cabinet door. 5.6.5Transfer electrodes in sealed tubes to welding station. Electrodes shall be welded within 24 h of removal from the humidity box. 5.6.6Weld and analyse for hydrogen in accordance with ISO 369
45、0. Welding shall take place within 2 min of removal of electrodes from the sealed tubes. 5.6.7Record ambient room temperature and relative humidity (RH) at the time of welding. 6Reporting of results Weld deposit hydrogen levels shall be expressed as ml/100 g deposited metal, and shall be reported as
46、 measured. The following information shall be presented with the results: a)electrode name; b)electrode designation; c)electrode size; d)electrode drying details (temperature and time at temperature); e)date and time of completion of exposure; f)date and time of beginning of test welding; g)measured
47、 temperature range during exposure; h)measured duration of exposure; i)information required by ISO 3690; j)temperature and relative humidity at time of welding. EN ISO 14372:2001 BS EN ISO 14372:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent na
48、tional body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess
49、 the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover. Tel: 020 8996 9000. Fax: 020 8996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest edition
链接地址:https://www.31doc.com/p-3744747.html