EN 12680-2 PDF

August 27, 2021 0 Comments

DIN EN () Founding – Ultrasonic examination – Part 2: Steel castings for highly stressed components. Hello. The scope of this standard is for highly stressed components. Where is the limit? When can I know if one material is higly stressed or not. Licens k?bt af: Vesta Wind System A/S Dansk standard DS/EN 1. udgave St?bning – Ultralydunders?gelse – Del 2.

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ENFounding — Surface roughness inspection by visualtactile comparators. For wall thicknesses greater than mm, agreement shall be made between the parties concerned on the test procedure and also on the recording and acceptance levels.

Figure 4 — Recording and acceptance limits for volumetric indications with measurable dimensions in the core zone see also Figures C.

ENNon-destructive testing — Characterization and verification of ultrasonic examination equipment — Part 1: EN em, Non-destructive testing — Ultrasonic examination — Part 1: Testing with twin-crystal probes is only adequate for wall em up to 50 mm. Denne publikations overensstemmelse er: Distance gain size technique DGS The distance gain size technique makes use of a series of theoretically derived curves which link the soundbeam path, the apparatus gain and the diameter of a disc-shaped reflector which is ne to the beam axis.

Group of indications, mainly non-resolvable individual indication. This European Standard applies to the ultrasonic examination of steel castings which have usually received a grain refining heat treatment and which have wall thicknesses up to and including mm.

NOTE Normal or angle probes can be used for the examination of steel castings for highly stressed components.

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This is one of three European Standards for ultrasonic examination. It makes the use of probes with focussed beams such 1268-2 twin-crystal probes necessary. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Management Centre or to any CEN member.

When can I know if one material is higly stressed or not? Your Alert Profile lists the documents that will be monitored. Key 1 Probe position 1 2 Probe position 2? Annexes B and C are informative. These indications sn not exceed the limits given in Table 1. The sizing of small planar discontinuities, as given in Figure 2, becomes more difficult with increasing beam-path length and sound-beam diameter.

EN – NDT Ultrasonic examination. Founding – Material engineering other topics – Eng-Tips

This European Standard specifies the requirements for the ultrasonic examination of steel castings with ferritic structure for highly stressed components and the methods for determining internal discontinuities by the pulse echo technique. Severity levela Smallest equivalent flat-bottomed or side-drilled hole diameter to be considered distance min.

The backwall echo reductions to be recorded shall be marked and measured as indication areas. Red Flag This Post Please let us know here why this post is inappropriate. If, during testing, suspicion arises that the reduction of backwall echo indication exceeds the recordable value see Table 3testing shall be repeated using locally reduced test sensitivity and the reduction of backwall echo indication shall be determined quantitatively in decibels.

The assessment areas shall have parallel surfaces. The sensitivity setting of angle -beam probes shall be such that the typical dynamic echo pattern of these reflectors see Figure 3 is clearly visible on the screen. Students Click Here Join Us!

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When calibration blocks are used, transfer correction can be necessary. Dimension of indication range larger than the sound-beam diameter DF. This standard is also available to be included in Standards Subscriptions. Unless other requirements have been agreed by the time of acceptance of the order, for finishing welds, the requirements for the parent metal shall apply.

During probe movement the sound paths change, but all indications remain without measurable dimensions. We have no amendments or corrections for 1280-2 standard.

Annex A is normative. Founding Some information is available as follows: The ultrasonic determination of the dimensions of a discontinuity with an accuracy sufficient for engineering applications is only possible under certain preconditions e. This European Standard does not apply to austenitic steels and joint welds.

BS EN 12680-2:2003

This type of indication should only be evaluated if, due to geometrical reasons, a back-wall echo cannot be obtained. This European Standard does not apply to austenitic steels and joint welds.

When testing from one side only, short-range resolving probes shall be used additionally for the detection of discontinuities close to the surface. Sensitivity and range setting. Finishing welds which are deeper than 50 mm shall be subject to supplementary examination with other suitable angle probes. The scope of this standard is for “highly stressed components”. The reference echo height according to Table 2 shall be at least 6 dB above the noise signal.