1、 SD.BSI BS EN IS0 L3Lb-NGL 1977 Lb24bb9 0579449 5Lb m BRITISH STANDARD Welding - Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature The European Standard EN IS0 13916 1996 has the status of a British Standard ICs 25.160 NO COPYING WITHOUT
2、 BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN IS0 13916 : 1997 BS EN IS0 13916 : 1997 The foilowing BSI references relate to the work on this standard Committee reference WEE47 Draft for comment 93i716854 DC ISBN O 680 26366 X This British Standard, having been prepared under the cirect
3、ion of the Engineering Sector BOgi.d, was published under the authority of the Standards Board and comes into effect on I5 January 1997 O BSI 1997 Committees responsible for this British Standard The prepamtion of this British standard was entrusted to Technical Committee wEW17, Metai-arc welding of
4、 steel, upon which the following bodies were represented British Constructional Steelwork Association Ltd. British Iron and steel Producers Association British Nuclear Fuels plc Electricity Association Institution of stsuctural Engineers Power Generation Contractom Association (PGCA (BEAMA Ltd.) Rai
5、lway Industry Mion Weldmg institute Weldmg Manufacturers? Association (BEAMA Ltd) Amendments issued since publication I Te* affected STD-BSI BS EN ISL371b-ENGL 1977 m Lb24bb7 0579451 174 m BS EN IS0 13916 : 1997 Contents Committees responsible National foreword page Inside front cover ii Foreword Te
6、xt of EN IS0 13916 2 3 * * v, O BSI 1997 i STD-BSI BS EN IS0 L39Lb-ENGL 1997 W 1b2qbb9 0579q52 O00 W BS EN IS0 13916 : 1997 National foreword This British Standard has been prepared by Technical Committee WW17 and is the English language version of EN IS0 13916 : 1996 Widding - Gu.idame on ule measu
7、rement of preheating tempemture, interpass temperature and preheat mintenume temperuture published by the European Committee for Standardization (CEN). It is identical with IS0 13916 : 1996 published by the International Organization for StandarMon (ISO). EN IS0 13916 was produced as the result of i
8、nternational discussion in which the UK took an active part. It has been assumed in the drafting of this British Standard that the execution of its provisions is entrusted to appropriately qualified and experienced people. Compliance with a British Standard does not of itself confer immunity from le
9、gal obligations. O BSI 1997 STD.BSI BS EN IS0 L39Lb-ENGL 1997 m Lb24bbS 0579453 T47 m EUROPEAN STANDARD NORME EUROPENNE EUROP- NORM EN Is0 13916 August 1996 ICs 25.160.00 Descriptors: Welding, fusion welding, workpieces, heat affected zone, temperature, temperature measurements English version Weldi
10、ng - Guidance on the measurement of preheating temperature, interpass temperature and preheat maintenance temperature (IS0 13916 : 1996) Soudage - Lignes directrices pour le mesurage de la temprature de prchauffage, de la temprature entre passes et de la temprature de maintien du prchauffage (IS0 13
11、916 : 1996) SchweiBen - Anleitung zur Messung der Vorwrm-, Zwischlenlagen- und Haltetemperatw: (IS0 13916 : 1996) This European Standard was approved by CEN on 199GO-20. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipuiate the conditions for giving this European S
12、tandard the status of a national standard without any alteration. Uptodate lists and bibiiographical references concerning such national standards may be obtained on application to the Centrai Secretariat or to any CEN member. This European Standard exists in three official versions (English, French
13、, German). A version in any other language made by translation under the responsibility of a CEN member inh its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the nationai standards bodies of Austria, Belgium, Denmark, Finland, Fran
14、ce, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fur Normung Centrai Secretariat: rue de Stassart 36, B-1060 Brussels O
15、 1996 Copyright reserved to CEN members Ref. No. EN IS0 13916 : 1996 E Page 2 EN IS0 13916 : 1996 Content Page Foreword . 3 1 Scope 4 2 Definitions 4 2.1 Preheating temperature (lp) 4 2.2 Interpass temperature (Ti) 4 2.3 Preheat maintenance temperature (1, ) . 4 3 Requirements . 4 3.1 Point of measu
16、rement . 4 3.2 lime of measurement 5 3.3 Test equipment . 6 4 Test report 6 5 Designation . 6 STD.BS1 BS ENISO L3Lb-ENGL 1777 D Lb2qbbS 0579Li55 ALT D Page 3 EN IS0 13916 : 1396 Foreword The text of EN IS0 1391 6:1996 has been prepared by Technical Committee CEN/TC 121 “Welding“, the secretariat of
17、which 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 February 1997, and conflicting national sta
18、ndards shall be withdrawn at the latest by February 1997. According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, It
19、aly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. - STD-BSI BS EN IS0 L37Lb-ENGL 1977 m LbZLibb7 057745b 75b Page 4 EN IS0 13916 : 1996 1 Scope This standard specifies requirements for the measurement of preheating tempera- ture, interpass temperature
20、 and preheat maintenance temperature for fusion welding. This standard may also be applied as appropriate in the case of other welding processes. This standard does not cover the measurement of post weld heat treatment temperatures . 2 Definitions For the purposes of this standard the following defi
21、nitions apply: 2.1 preheating temperature (Tp): the temperature of the workpiece in the weld zone imnediately prior to any welding operation. It Is normally expressed as a minimum and is usually equal to the minimum interpass temperature. 2.2 interpass temperature (Ti): the temperature in a multi-ru
22、n weld and adjacent parent metal imnediately prior to the application of the next run. It is normally expressed as a maximum temperature. 2.3 preheat maintenance temperature(Tm): the minimum temperature in the weld zone which shall be maintained if welding is interrupted. 3 Requirements 3.1 Point of
23、 measurement The temperature measurement shall normally be made on the surface of the work- piece facing the welder, at a distance of A = 4 x t, but not more than 50 mn, from the longitudinal edge of the groove (see figure i). This shall apply for workpieces thickness t not exceeding 50 mn in the we
24、ld. When the thickness exceeds 50 mn, the required temperature shall exist in the parent metal for a distance of at least 75 mn or as otherwise agreed In any di- rection from the joint preparation. Where practicable, the temperature shall be measured on the face opposite to that being heated. Otherw
25、ise, the temperature shall be confirmed on the heated face at a time after removal of the heat source related to parent metal thickness to allow for temperature equalization. Where fixed permanent heaters are in use and there is no access to the reverse face for temperature measurement, readings sha
26、ll be taken on the exposed parent metal surface imnediately adjacent to the weld preparation. The time allowed for the temperature equalization shall be of the order of 2 min for each 25 mn of parent metal thickness. Interpass temperature shall be measured on the weld metal or the imnediately adjace
27、nt parent metal. STD-BSI BS EN IS0 1371b-ENGL 1777 W lb24bb7 0577457 b92 Page 5 EN IS0 13916 : 1996 Dimensions in mn a) butt joint * * v) b) flllet joint t S 50: A = 4 x t, MX. 50 t 50: A = 75 Figure 1 - Distance between points of measurement 3.2 Time of measurement Interpass temperature shall be me
28、asured in the weld area imnediately before passage of the arc. If the preheat maintenance temperature is specified it shall be monitored uring the period of welding interruption. STD-BSI BS EN IS0 137Lb-ENGL 1777 m Lb2ibbS 0577458 527 m Page 6 EN IS0 13916 : 1996 3.3 Test equipment Equlpment used fo
29、r temperature measurement should be specified in the welding procedure specifications, e.g.: - temperature sensitive materials (e.g. crayons or paints) (TS); - contact thermometer (CT); - thermocouple (TE); - optical or electrical devices for contactless measurement (TB). 4 Test report If a test rep
30、ort is required, it shall refer to this standard and give the fol- lowing minimum information in accordance with the speclfication in welding procedure specification: - measured preheating temperature, in OC; - measured Interpass temperature, in OC; - measured preheat maintenance temperature, in OC;
31、 - any deviation from this standard, if applicable. 5 Designation Examples of designation, which should be used in test reports 5.1 Example 1 A preheating temperature Tp measured only once in accordance with this standard as 155 OC (Tp 155) using a contact thermometer (CT) shall be designated as fol
32、 lows: Temperature EN IS0 13916 - Tp 155 - CT 5.2 Example 2 An interpass temperature Ti measured more than once in accordance with thls standard as 130 oc, 153 OC and 160 OC (Ti 130/160) using a thermocouple (TE) shall be designated as follows: Temperature EN IS0 13916 - Ti 130/160 - TE STD. BSI BS
33、EN IS0 L39Lb-ENGL BS EN IS0 13916 : 1997 BSI 389 Chiswick High Road London w4 4AL 1997 Lb24bb 0579459 4b5 BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the internaiionai leve
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