DIN EN 22401-1994 Covered electrodes determination of the efficiency metal recovery and deposition coefficient (ISO 2401 1972) German version EN 22401 1994《涂敷焊条 效率、金属回收和熔敷系数的测定 (IS.pdf
《DIN EN 22401-1994 Covered electrodes determination of the efficiency metal recovery and deposition coefficient (ISO 2401 1972) German version EN 22401 1994《涂敷焊条 效率、金属回收和熔敷系数的测定 (IS.pdf》由会员分享,可在线阅读,更多相关《DIN EN 22401-1994 Covered electrodes determination of the efficiency metal recovery and deposition coefficient (ISO 2401 1972) German version EN 22401 1994《涂敷焊条 效率、金属回收和熔敷系数的测定 (IS.pdf(7页珍藏版)》请在麦多课文档分享上搜索。
1、DEUTSCHE NORM Amil 1994 Covered electrodes Determination of the efficiency, metal recovery and deposition coefficient I EN 22401 (IS0 2401 : 1972) English version of DIN EN 22401 This standard incorporates the English version of Is0 2401. ICs 25.160.20 Supersedes DIN 32523, Umhllte Stabelelektroden;
2、 Bestimmung der Ausbringung, der Gesamtausbringung und des Abschmelzkoeffizienten (IS0 2401 : 1972) April 1984 edition. European Standard EN 22 401 : 1994 has the status of a DIN Standard. National foreword This standard has been published in accordance with adecision taken by CENIBT to adopt, witho
3、ut alteration, International Standard IS0 2401 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Schweitechnik (Welding Standards Committee). Previous edition DIN 32523: 04.84. Amendments DIN 32523, April 1984 edition, has been superseded by the sp
4、ecifications of EN 22401, which is identical to IS02401 :1972. As compared with DIN 32523, April 1984 edition, further parameters, such as the nominal electrode efficiency, the effective electrode efficiency, the deposition efficiency and the deposition coefficient have been dealt with. Internationa
5、l Patent Classification B 23 K 035/00 G O1 B 021102 G O1 B 021/10 EN comprises 5 pages. Beuth Verlag GmbH, Berlin, has the exclusive right of sale for German Standards (DIN-Normen). DIN EN 22401 Engl. Price group 6 09.94 Sales No. 1106 EUROPEAN STANDARD NORME EUROPENNE EUROPAISCHE NORM EN 22401 Febr
6、uary 1994 UDC 621.791.7 Descriptors: Welding electrodes, covered electrodes, efficiency, steel. English version Covered electrodes Determination of the efficiency, metal recovery and deposition coefficient (IS0 2401 : 1972) lectrodes enrobes; dtermination des divers rendements et du coefficient de d
7、pt (IS0 2401 : 1972) Umhllte Stabelelektroden; Bestimmung der Ausbringung, der Gesamtausbringung und des Abschmelzkoeffizienten (IS0 2401 : 1972) This European Standard was approved by CEN on 1994-02-04 and is identical to the IS0 Standard as referred to. CEN membersare bound to comply with the CENK
8、ENELEC 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 Central Secretariat or to an
9、y 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 Central Secretariat has the same status as the official versions. C
10、EN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Eu
11、ropisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 8-1050 Brussels O 1994. Copyright reserved to all CEN members. Ref. No. EN 22401 : 1994 E Page 2 EN 22401 :1994 Foreword In 1992, CEN/BT decided to submit International Standard IS0 2401 : 1972 Covered electrodes; determination of
12、 efficiency, metal recovery and deposition coefficient to the Unique Acceptance Procedure in accordance with resolution BTS 2 C 48/1992. The result was positive. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and
13、 conflicting national standards withdrawn, by August 1994 at the latest. In accordance with the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Ne
14、therlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of the International Standard IS0 2401 : 1972 was approved by CEN as a European Standard without any modification. Page 3 EN 22401 : 1994 300 _- -_ 1 SCOPE AND FIELD OF APPLICATION 150 or 300 Thes
15、e suffixes shall be used as follows : This International Standard specifies a method for the determination of the efficiency, weld metal recovery and deposition coefficient of carbon steel and low alloy high tensile steel covered electrodes in the sizes 3.15 to 6.3 mm). For the practical use of this
16、 International Standard, the precision of measurement specified is sufficient because of the inherent variation in characteristics of individual electrodes. Section 4 specifies the measurement of a number of different values. It is, however, necessary to measure only those values required for the ca
17、lculation of the particular factors being determined. 2 TERMS AND DEFINITIONS 2.1 nominal electrode efficiency, RN : The ratio of the mass of weld metal deposited under standard conditions to the mass of nominal diameter core wire consumed for a given electrode. 2.2 effective electrode efficiency, R
18、E : The ratio of the mass of weld metal deposited under standard conditions to the actual mass of core wire consumed. 2.3 overall weld metal recovery, RG : The ratio of the mass of weld metal deposited under standard conditions to the total mass of a given electrode tested. 2.4 deposition efficiency
19、, RD : The ratio of the mass of weld metal deposited under standard conditions to the total mass of a given electrode consumed, exclusive of stub ends. 2.5 deposition coefficient, D : The mass of weld metal deposited under standard conditions per ampere minute for a given electrode. When reporting t
20、he results of tests, a further suffix shall be added to the above abbreviations RN, RE, RG, RD and D to indicate the type of current used to establish the values. OC positive RN + OC negative RN - AC RN - 3 TESTPLATES 3.1 Number For each diameter of shall be welded. 3.2 Specif ication lectrode to be
21、 tested, one t ct plate The test plate shall be of carbon steel (up to 0.25 % C) and shall have approximately the following dimensions : - width 75 mm - length 300 mm - thickness 12 mm In most cases a single test piece will be long enough; if this is not the case, a second test piece having a length
22、 of 150 mmor, if necessary, 300 mm shall be placed end to end with the first test piece (see Figure). In order to facilitate weighing after welding, the test plate may, where two plates have been used, be broken into two parts. The surface of the plate on which the deposit is to be made shall be cle
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