Purchase your copy of BS EN ISO as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards. A Reference number ISO (E) INTERNATIONAL STANDARD ISO First edition Approval testing of welders. ISO (E). INTERNATIONAL. STANDARD. ISO. First edition. Approval testing of welders — Fusion welding —. Part 3.
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If any other form of welder’s approval test certificate is used, it shall contain the information required in Annex A of EN All relevant test conditions shall be recorded on the certificate. The acceptance requirements for imperfections found by test methods according to this standard shall, unless otherwise specified, be assessed following EN A test is listed for each of the ranges of plate thickness and pipe wall thickness or pipe diameter as specified in tables 1 and 2.
ISO 焊工的认可试验.熔焊.铜及铜合金 – MBA智库文档
During the approval test the welder should be required to show adequate practical experience and job knowledge test non mandatory of the welding processes, materials and safety requirements for which he is to be approved; information on these aspects is given in Annex A. When required, visual examination can be supplemented by penetrant see EN or other test methods see table 6. The range of approval for each type of test is given in the relevant sub-clauses and tables.
The type of shielding gas shall not be incorporated in the designation but shall be included in the welder’s approval test certificate see Annex A of Ios Material groups according to CR 5.
A minimum weld length of mm is required, but not more than three test pieces. For undated references the latest edition of the publication referred to applies.
BS EN ISO – Approval testing of welders. Fusion welding. Copper and copper alloys
In some cases a welder approval test on a branch connection can be necessary. The certificate of approval testing is issued under the sole responsibility of the examiner or examining body.
The welding position H-L for pipes approves for all pipe angles in production work. When fracture testing is used, it shall be carried out in accordance with EN In addition to radiography, two bend tests, one face, one root see EN or two fracture tests, one face, one root see EN shall always be applied to butt welds.
BS EN ISO 9606-3:1999
When macroscopic examination is used, at least four test specimens shall be taken equally spaced in the inspection length. The test pieces shall be marked with the identification of the examiner and the welder before welding starts. Dimensions of test piece for fillet weld s on plate Dimensions in millimetres Figure 3: The test weld can be used to approve a welding procedure and a welder provided that all the relevant requirements, e.
For welding position PA or PC, one root and one face bend test specimen shall be tested see figure 7 a. When transverse bend testing is used, one root bend test specimen and one face bend test specimen shall be tested in accordance with EN However, some countries can require that the welder undergoes a test of job knowledge.
Each test specimen shall be positioned for breaking as shown in figure 6b, and examined after fracture. These normative references are cited at the appropriate places in the text and the publications are listed hereafter.
If any special tests are to be carried out because of the characteristics of particular welding processes, materials or dissimilar alloys, these shall be isso prior to carrying out the welder’s test. The ability of the welder to follow verbal or written instructions and testing of his skill are important factors in ensuring the quality of the welded product.
A welder is approved if the imperfections in the test piece are within the specified limits of level B in ENexcept for imperfection types as follows: One test piece per position. Fusion welded butt joints in steel plates up to 50 mm thick ISO If the welder fails any of the prescribed tests, no certificate shall be issued.
Prior to mechanical testing, backing strips, where used, shall be removed. However, it is possible for a welder to be approved for more than one welding process by a single test or by two separate approval tests to be used to cover a multi-process joint.
In these tables the range of approval is indicated in the same horizontal line. This date can be different to the date of issue marked on the certificate. Copper and copper alloys — Part 4: Draft International Standards adopted by the Technical Committees are circulated to member bodies for voting.
Specified procedures shall be used for all destructive and non-destructive examinations. Preparation and fracture testing of test specimens for a butt weld 96606-3 plate 7. The test piece can be sectioned by mechanical means discarding the first and the last 25 mm of the test piece at the end of the plates figures 5 and 6.
For all other welding positions, two root and two face bend test specimens shall be tested see figure 7 b. Preparation and fracture testing of test specimens for a fillet weld on plate 7. This 96606-3 covers approval testing of welders for work on semi-finished and finished products made from wrought, forged or cast material types listed in 5. The welding processes referred to in this standard include those fusion welding processes which are designated as manual or partly mechanized welding.
Each position one face fracture or one face transverse bend or one side bend test specimen b Sectioning into at least four test specimens c Inspection length of the test specimen NOTE Figure c shows the notch profile q d Fracture testing, face side e Fracture testing, root side Figure 7: The job knowledge indicated in this annex is only pitched at the most basic level.
Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
Throughout the text of this standard, read ” 96006-3 welding parent metals from two different 960-3 which do not give approval to each other according to table 4 see 6. For kso references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision.
Fusion welded butt joints in steel plates thicker than 50 mm and up to and including mm in izo EN Dimensions in millimetres Figure 1: The practical test and the examination of job knowledge see Annex A shall 960-63 designated by ”Accepted” or ”Not tested”. Tests will be carried out in accordance with jso standard unless more severe tests are specified by the relevant application standard when these are applied.
Titanium and titanium alloys — Part 6: This standard covers the following welding processes: