1、 ISO 2012 Welding for aerospace applications Qualification test for welders and welding operators Fusion welding of metallic components AMENDMENT 1 Soudage pour applications arospatiales preuve de qualification pour soudeurs et oprateurs Soudage par fusion des composants mtalliques AMENDEMENT 1 INTE
2、RNATIONAL STANDARD ISO 24394 First edition 2008-10-15 Reference number ISO 24394:2008/Amd.1:2012(E) AMENDMENT 1 2012-11-15 Corrected version 2013-05-01 ISO 24394:2008/Amd.1:2012(E)ii ISO 2012 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2012 All rights reserved. Unless otherwise specified, n
3、o part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs memb
4、er body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ISO 24394:2008/Amd.1:2012(E) Foreword ISO (the International Organization for Standardization)
5、 is a worldwide federation of national 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 repre
6、sented on that committee. International 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
7、 drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internationa
8、l Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO
9、 24394:2008 was prepared by Technical Committee ISO/TC 44, Welding and allied processes. This corrected version of ISO 24394/Amd.1:2012 incorporates an updated Table 1, in which “x” replaces “” for D 26 mm in: a) TP1, PF row, butt weld columns PA and PF; b) TP2, PF row, fillet weld column PF; c) TP3
10、, PF row, butt weld columns PA, PE, and PF. Requests for official interpretations of any aspect of this amendment should be directed to the Secretariat of ISO/TC 44 via your national standards body. A complete listing of these bodies can be found at www.iso.org. ISO 2012 All rights reserved iii Weld
11、ing for aerospace applications Qualification test for welders and welding operators Fusion welding of metallic components AMENDMENT 1 Page 1, Clause 2 Delete footnotes 1) and 2) and their citations from ISO 4063 and ISO 6947. Page 3, 4.1.1 Add the following paragraph at the end of the subclause.The
12、welding coordinator of the plant or the fabricator shall select from Table 2 the test piece as required for the production work on which the welder is to be employed. Two complementary specific test pieces (TP5 and TP6) may also be chosen as defined in 4.4 and 4.8.1. Page 3, 4.1.3 Delete this subcla
13、use. Page 5, Table 1 Replace the existing table with that on p. 3. Page 6, 4.8.2 Delete “.”, add “;” at the end of “g)” and add h). h) qualification for welding positions that are not covered by Table 1. Page 8, 5.1 ISO 24394:2008/Amd.1:2012(E) ISO 2012 All rights reserved 1 ISO 24394:2008/Amd.1:201
14、2(E) Replace the first paragraph with the following:The candidate shall provide documented evidence of satisfactory vision in accordance with the following requirements.d) Near-vision acuity shall permit reading of Times New Roman N5 maximum size or equivalent font types (Times New Roman of 5 points
15、 vertical height where 1 point = 1/72 in 0,35 mm) at not less than 30 cm with at least one eye, corrected or uncorrected. This test shall be conducted with a minimum of six single spaced random capital characters.e) Colour perception shall be examined, e.g. according to the Ishihara test. Page 8, 5.
16、2 Replace the second and third sentences and the note with the following:The welding coordinator shall have knowledge and experience relevant to the welding process, and be acceptable to the responsible design authority or recognized examining body. The welding coordinator may authorize another pers
17、on to administer the welder or welding operator qualification test. NOTE 1 Example of relevant knowledge is International Welding Engineer (IWE) according to IIW IAB- 252-11. 5 NOTE 2 The person responsible for welder and welding operator qualification tests can differ from the person responsible fo
18、r implementing 4.1.1 Page 10, Table 2 In column 2, row “TP1”, add the following at the end of footnote a . for materials susceptible to cracking, the welding sequence may be altered. Page 15, Clause 9 Replace the fourth paragraph with the following.The person authorized to conduct the welders qualif
19、ication test shall decide if and when a new test can be taken. If the welder or welding operator fails the test, the candidate shall have additional training and/or practice. Page 15, Clause 11 Add the following final paragraph. Qualifications to previous revisions of this International Standard rem
20、ain valid within the limits given in the preceding. Page 16, clause 122 ISO 2012 All rights reserved ISO 24394:2008/Amd.1:2012(E) Replace the third paragraph with the following.For requalification tests, actual production parts may be used to replace test pieces, if they are consistent with the requ
21、irements of the welding process, the material group and testing as identified in the respective initial qualification test, e.g. requirements given in Table 1 and Table 3. Page 1718, Table A.1 Replace the existing Table with that on pp. 45. Pages 1920, Table A.2 In the “Unacceptable imperfections” c
22、olumn, row 8, “Spatter”, add a superscript e , Insert the following footnote at the bottom of the footer row.eSpatter may be acceptable on welding processes or materials where it cannot be avoided. In such cases, the acceptability is at the discretion of the welding coordinator. Page 30,before the b
23、ibliography Insert Annex F, which appears on p. 6. Page 30, Bibliography Add the following entry: 1 IAB-252-11, IIW guideline for international welding engineers, technologists, specialists and practitioners Personnel with qualification for welding coordination Minimum requirements for the education
24、, examination and qualification. Available (viewed 2012-10-11) at: http:/ / www.iiwelding.org/WorkingUnits/QCMB_IAB/Documents/IAB-252r1-11-SV00-Guideline-for- Personnel-with-Qualification-for-Welding-Coordination-SV.pdf ISO 2012 All rights reserved 3 ISO 24394:2008/Amd.1:2012(E) Table 1 Range of qua
25、lification for welding positions Test piece (see Table 2) Welding position of test piece according to ISO 6947:2011 Qualified welding position Plate or tube D 26 mm Tube D 26 mm Butt weld Fillet weld Butt weld Fillet weld PA PC PE PF PA PB PC PD PF PA PC PF PB PD PF TP1 PA x x a PC x x x a PE x x x
26、PF x x TP2 PA x PB x x PC x x x PD x x x PF x x x TP3 PA x bc PC x x x c PF x x x x c x c TP4 PB (x) (x) x c PD (x) (x) (x) xc x c PF (x) (x) (x) x c x c x indicates those welding positions for which the welder is qualified. (x) indicates those welding positions for which the welder is qualified for
27、 welding on tube D 26 mm, but not on plate. indicates those welding positions for which the welder is not qualified. NOTE 1 Plate or sheet qualification in the PA position also qualifies for welding tubing with D 26 mm in the PA position. NOTE 2 Test pieces on tube do not qualify for sheet/plate. Tu
28、be welds do not contain weld start and stop points that are required for sheet or plate welds. aOnly applicable for longitudinal weld on a tube. bOnly applicable for a rotating tube with the torch in welding position PA. cThe qualification is valid for any tube of outer diameter equal to or larger t
29、han the outer diameter of the test piece.4 ISO 2012 All rights reserved ISO 24394:2008/Amd.1:2012(E) Table A.1 Required dimensions and permissible deviations of form Dimensions in millimetres Imperfection a Excess weld metal/ excess penetration 502/504 Weld width of face side 5212 Linear misalignmen
30、t 5071/5072 Illustration a 502 504 5071 5072 Material group A B C E D A B C E D A B C D E Determination x = 0,6t + 0,6 mm b x = 0,2t + 1,8 mm b b = 1,8t + 5 mm b = 2t + 6 mm x = 0,1t + 0,3 mm or x = 0,5 mm, whichever is less Test piece thick- ness, t c max. max. max. max. max. 0,4 0,9 1,9 5,7 6,8 0,
31、3 0,5 0,9 1,9 5,9 7,0 0,3 0,6 1,0 2,0 6,1 7, 2 0,3 0,8 1,1 2,0 6,4 7,6 0,4 1,0 1,2 2,0 6,8 8,0 0,4 1,2 1,4 2,1 7, 2 8,4 0,4 1,5 1,5 2,1 7,7 9,0 0,4 1,6 1,6 2,2 7,9 9,2 0,5 1,8 1,7 2,2 8,2 9,6 0,5 2,0 1,8 2,2 8,6 10,0 0,5 2,5 2,1 2,3 9,5 11,0 0,5 3,0 2,4 2,4 10,4 12,0 0,5 ISO 2012 All rights reserved
32、 5 ISO 24394:2008/Amd.1:2012(E) Table A.1 (continued) Imperfection a Weld width devia- tion d Weld track deviation Throat thickness e Illustration a Deviations from the intended weld track shall be smooth and uniform on the face side of the weld. desirable fillet weld profiles acceptable fillet weld
33、 profiles Material group A B C D E A B C E D A B C D E A B C E D Determination x = 0,25 b max f a = 0,7 t a = 0,4t + 2 mm a = 0,4 t + 3,1 mm Test piece thick- ness, c max. max. max. min. max. max. 0,4 25 % 1,4 1,7 0,3 2,1 3,2 0,5 1,5 1,8 0,4 2,1 3,2 0,6 1,5 1,8 0,4 2,2 3,4 0,8 1,6 1,9 0,6 2,4 3,5 1,
34、0 1,7 2,0 0,7 2,4 3,5 1,2 1,8 2,1 0,8 2,5 3,6 1,5 1,9 2,2 1,1 2,6 3,7 1,6 2,0 2,3 1,1 2,7 3,8 1,8 2,1 2,4 1,3 2,8 3,9 2,0 2,2 2,5 1,4 2,8 3,9 2,5 2,4 2,8 1,8 3,0 4,1 3,0 2,6 3,0 2,1 3,2 4,3 aOrdinal number according to ISO 6520-1 given, where available. bIn case of misalignment, determination is to
35、be made from the outermost surface. cFor fillet mating parts of non-uniform thicknesses, the smaller thickness shall be taken as reference. db lis the largest measured weld width and b sis smallest measured weld width. eConvexity C of a weld or individual surface bead b shall not exceed the followin
36、g value: weld width of face side or individual surface bead, b convexity, C b 8 mm 1,6 mm 8 mm b 25 mm 3 mm b 25 mm 5 mm fSee column “Weld width of face side” for values of b max .6 ISO 2012 All rights reserved ISO 24394:2008/Amd.1:2012(E) Annex F (informative) How to use Table 1 F.1 General When us
37、ing Table 1, the user shall only move in the vertical or horizontal direction and not diagonally. F.2 Example 1 It is intended to perform production welding plate to tube D 26 mm with fillet welds produced in position PF. This situation is marked by a circle in Table F.1. To achieve the required qua
38、lification, the user shall find the relevant field in the same column which is marked with (observe the footnotes). This operation results in two options. Option A: Test piece 2 in PF position. Option B: Test piece 4 in PF position. NOTE For dimensional requirements on test piece 4, see Table 2. Dep
39、ending on the availability of test piece material and also taking into consideration other production work, users have the choice of picking the most suitable option for their purposes. F.3 Example 2 When having achieved a qualification per option B with test piece 4, outer diameter of 20 mm in PF p
40、osition, which other qualifications are included? Answer: All qualifications given in the same line shown for test piece 4 are included, which are: fillet welds in the PA, PB and PF position on tubes with outer diameter greater than 26 mm; fillet welds in PB and PF position on tubes with outer diame
41、ter from 20 mm up to 26 mm. Fillet welds are on tube to tube and tube to plate. See Table F.2. ISO 2012 All rights reserved 7 ISO 24394:2008/Amd.1:2012(E) Table F.1 Example 1 Test piece (see Table 2) Welding position of test piece according to ISO 6947:1990 Qualified welding position Plate or tube D
42、 26 mm Tube D 26 mm Butt weld Fillet weld Butt weld Fillet weld PA PC PE PF PA PB PC PD PF PA PC PF PB PD PF PA a PC a PE PF PA PB PC PD PF PA b, c PC c PF c c PB () () c PD () () () cc PF () () () c c indicates those welding positions for which the welder is qualified. () indicates those welding po
43、sitions for which the welder is qualified for welding on tube D 26 mm, but not on plate. indicates those welding positions for which the welder is not qualified. aOnly applicable for longitudinal weld on a tube. bOnly applicable for a rotating tube with the torch in welding position PA. cThe qualifi
44、cation is valid for any tube of outer diameter equal to or larger than the outer diameter of the test piece. 8 ISO 2012 All rights reserved ISO 24394:2008/Amd.1:2012(E) Table F.2 Example 2 Test piece (see Table 2) Welding position of test piece according to ISO 6947:1990 Qualified welding position P
45、late or tube D 26 mm Tube D 26 mm Butt weld Fillet weld Butt weld Fillet weld PA PC PE PF PA PB PC PD PF PA PC PF PB PD PF PA a PC a PE PF PA PB PC PD PF PA b, c PC c PF c c PB () () c PD () () () cc PF () () () c c indicates those welding positions for which the welder is qualified. () indicates those welding positions for which the welder is qualified for welding on tube D 26 mm, but not on plate. indicates those welding posit
