BS-EN-12073-2000.pdf
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1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12073:2000 The Euro
2、pean Standard EN 12073:1999 has the status of a British Standard ICS 25.160.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Welding consumables Tubular cored electrodes for metal arc welding with or without a gas shield of stainless and heat-resisting steels Classification
3、This British Standard, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 January 2000 BSI 01-2000 ISBN 0 580 35223 4 BS EN 12073:2000 Amendments issued since publication Amd. No.DateC
4、omments National foreword This British Standard is the English language version of EN 12073:1999. The UK participation in its preparation was entrusted to Technical Committee WEE/39, Welding consumables, which has the responsibility to: aid enquirers to understand the text; present to the responsibl
5、e 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. A list of organizations represented on this committee can be obtained on request to its secret
6、ary. 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 International Standards Correspondence Index, or by using the Find facility of the BSI Standards Elec
7、tronic 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 British Standard does not of itself confer immunity from legal obligations. Summary of pages This d
8、ocument comprises a front cover, an inside front cover, the EN title page, pages 2 to 12, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. (8523($1?67$1$5 1250(?(8523e(11( (8523b,6 2) the second part gives a symbo
9、l indicating the chemical composition of the all-weld metal; 3) the third part gives a symbol indicating the type of electrode core; 4) the fourth part gives a symbol indicating the shielding gas; 5) the fifth part gives a symbol indicating the welding position. In order to promote the use of this s
10、tandard, the classification is split into two sections: a) Compulsory section This section includes the symbols for the type of product, the chemical composition, the type of electrode core and the shielding gas, i.e. the symbols defined in 4.1, 4.2, 4.3 and 4.4; b) Optional section This section inc
11、ludes the symbols for the welding positions for which the electrode is suitable, i.e. the symbol defined in 4.5. The full identification (see clause 8) shall be used on packages and in the manufacturers literature and data sheets. 4Symbols and requirements 4.1 Symbol for the product/process The symb
12、ol for the tubular cored electrode used in the metal arc welding process is the letter T. 4.2 Symbol for the chemical composition of all-weld metal The symbol in Table 1 indicates the chemical composition of all-weld metal determined in accordance with clause 6. The all-weld metal obtained with the
13、tubular cored electrodes in Table 1 under conditions given in clause 5 shall also fulfil the requirements given in Table 2. 3DJH? (1? ?%6,? Table 1: Symbol for chemical composition of all-weld metal $OOR?VPEROV 2 all positions, except vertical down; 3 flat butt weld, flat fillet weld, horizontal-ver
14、tical fillet weld; 4 flat butt weld, flat fillet weld; 5 vertical down and positions according to symbol 3. 3DJH? (1? ?%6,? 5Mechanical tests Tensile tests and any required retests shall be carried out on weld metal in the condition specified in Table 2 (as welded or post weld heat treatment) using
15、an all-weld metal test assembly type 3 in accordance with EN 1597-1 using 1,2 mm, or if this diameter is not manufactured the next larger diameter manufactured as described below in 5.1 and 5.2. 5.1 Preheating and interpass temperatures Preheating and interpass temperatures shall be selected for the
16、 appropriate weld metal type from Table 4. Table 4: Preheating and interpass temperatures Alloy symbol according to Table 1 Type of weld metalPreheating and interpass temperatures ?C 13 13 Ti 17 Martensitic and ferritic chromium steel 200 to 300 13 4Soft martensitic stainless steel100 to 180 All oth
17、ersAustenitic and austenitic-ferritic stainless steelmax. 150 The preheating and interpass temperature shall be measured using temperature indicator crayons, surface thermometers or thermocouples, in accordance with EN ISO 13916. The interpass temperature shall not exceed the maximum temperature ind
18、icated in Table 4. If, after any pass, the interpass temperature is exceeded, the test assembly shall be cooled in air to a temperature within the limits of the interpass temperature. 5.2 Pass sequence The total number of runs, the number of runs per layer and the total number of layers shall be as
19、given in Table 5. The direction of welding to complete a layer consisting of two passes shall not vary, but the direction of welding of layers shall be alternated. Table 5: Pass sequence Electrode diameter mm Total number of passes Passes per layerTotal number of layers First layerOther layers1) 1,2
20、12 to 191 or 22 or 36 to 9 1,4 to 2,010 to 171 or 22 or 35 to 8 2,4 to 3,2 7 to 141 or 22 or 34 to 7 1) The final layer can have four passes. 3DJH? (1? ?%6,? 6Chemical analysis Chemical analysis is performed on any suitable all-weld metal test specimen. Any analytical technique can be used but in ca
21、se of dispute reference shall be made to established published methods. NOTE: See Bibliography. 7Technical delivery conditions Technical delivery conditions shall meet the requirements in EN 759. 8Designation The designation of tubular cored electrodes shall follow the principle given in the example
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- BS EN 12073 2000
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