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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ISO 焊工的认可试验.熔焊.铜及铜合金 – MBA智库文档

The macroscopic specimen shall be prepared and etched on one side to clearly reveal the weld see ENpolishing is not required. Preparation and 96006-3 testing of test specimens for a fillet weld on pipe When macroscopic examination in accordance with EN is used, at least four test specimens shall be taken equally spaced around the pipe. For one root fracture or one root transverse bend or one side bend test specimen Position 2: The welder’s approval test shall be carried out on test pieces and is independent of the type of iiso.

The actual questions used should be drawn up by the individual country, but should include questions on areas covered in clause A. The following conditions shall apply: The examiner or examining body shall verify compliance with the above conditions and sign the prolongation of the welder’s approval test iiso.

A Reference number ISO The actual tests of a welder’s job knowledge can be given by any of the following methods or combinations of these methods: 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.

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In some cases a welder approval test on a branch connection can be necessary. ISO consists of the following parts, under the general title Approval testing of welders — Fusion welding: This standard applies to the approval testing of welders for the fusion welding of copper. When radiographic testing is used, the inspection length of the weld see figure 7 a and 7 b in the test piece shall be radiographed in the as-welded condition in accordance with EN using class B technique.

The range of approval for each type of test is given in the relevant sub-clauses and tables. In these tables the range of approval is indicated in the same horizontal line.

Dimensions of test piece for fillet weld s on plate Dimensions in millimetres Figure 3: The term ”copper” stands for copper and weldable copper alloys.

The certificate shall be issued under the sole responsibility of the examiner or examining body and shall contain all the information detailed in Annex A of EN For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated isoo it by amendment or revision.

BS EN ISO 9606-3:1999

This date can be different to the date of issue marked on the certificate. When transverse bend testing is used, one root bend test specimen and one face bend test specimen shall be tested in accordance with EN In cases where the majority of production work is fillet welding, the welder shall be approved also by an appropriate fillet welding test; e approval for butt welds in pipes without backing includes approval for branch connections within the same range of approval as in tables 3 to 5. Welding procedure specification for arc welding EN Non destructive testing — Penetrant testing — Part 1: Copper and copper alloys — Part 4: The test weld can be used to approve a welding procedure and a welder provided that all the relevant requirements, e.

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Fusion welded butt joints in steel plates thicker than 50 mm and up to and including mm in thickness EN For all other welding positions, two root and two face bend test specimens shall be tested see figure 7 b. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.

A change of process requires a new approval test. Preparation and fracture testing of test specimens for a fillet weld on plate 7. A full explanation of these imperfections is given in 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. It is not intended that thicknesses or diameters should be measured precisely but rather the general philosophy behind the values given in tables 1 and 2 should be applied.

Prior to mechanical testing, backing strips, where used, shall be removed.

Each criterion is considered to be a significant factor in the approval testing. Dimensions of test piece for a fillet weld on pipe 7. The format of this Annex A of EN The work of preparing International Standards is normally carried out through ISO 9606- committees.