BS EN 10228-4:2016 – TC:2020 Edition
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Tracked Changes. Non-destructive testing of steel forgings – Ultrasonic testing of austenitic and austenitic-ferritic stainless steel forgings
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 65 |
This European Standard describes techniques for the manual, pulse-echo, ultrasonic testing of forgings manufactured from austenitic and austenitic-ferritic stainless steels. Mechanized scanning techniques, such as immersion testing, may be used but should be agreed between the purchaser and supplier (see Clause 4). This part of EN 10228 applies to four types of forgings, classified according to their shape and method of production. Types 1, 2 and 3 are essentially simple shapes. Type 4 covers complex shapes. This part of EN 10228 does not apply to: – closed die forgings; – turbine rotor and generator forgings. Ultrasonic testing of ferritic and martensitic steel forgings is the subject of Part 3 of this European Standard.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 39 | Contents Page |
| 41 | European foreword |
| 42 | 1 Scope 2 Normative references 3 Terms and definitions |
| 43 | 4 Mandatory information 5 Test procedure 5.1 General 5.2 Form |
| 44 | 5.3 Content 6 Personnel qualification 7 Equipment and accessories 7.1 Instrument 7.2 Probes 7.2.1 General |
| 45 | 7.2.2 Contouring 7.2.3 Nominal frequency 7.2.4 Normal-beam probes 7.2.5 Angle-beam probes 7.2.6 Dual-element probes 7.3 Calibration blocks 7.4 Reference blocks 7.5 Couplant |
| 46 | 8 Routine calibration and checking 9 Stage of manufacture 10 Surface condition 10.1 General 10.2 Surface finish related to quality class Table 1 — Surface finish related to quality classa 10.3 As-forged surface condition |
| 47 | 11 Test sensitivity 11.1 General 11.2 Normal-beam probes 11.3 Angle-beam probes 11.4 Repeat testing 12 Scanning 12.1 General |
| 48 | 12.2 Complex forgings 12.3 Grid scanning coverage 12.4 100 % scanning coverage 12.5 Scanning speed |
| 49 | Table 2 — Classification of forgings according to their shape and method of production |
| 50 | Table 3 — Scanning coverage with normal-beam probes |
| 51 | Table 4 — Scanning coverage with angle-beam probes 13 Classification 13.1 Classification of indications |
| 52 | Figure 1 — Pattern 1 – A-scan presentation and echo envelope presentation |
| 53 | Figure 2 — Pattern 2 – A-scan presentation and echo envelope presentation 13.2 Classification of discontinuities |
| 54 | Figure 3 — Point-like discontinuity (L ≤ Dp) Figure 4 — Extended discontinuity (L > Dp) |
| 55 | Figure 5 — Isolated discontinuities (L ≤ Dp, d > 40 mm) Figure 6 — Grouped discontinuities (L ≤ Dp, d ≤ 40 mm) |
| 56 | 14 Recording levels and acceptance criteria Table 5 — Quality classes, recording levels and acceptance criteria for normal-beam probesa |
| 57 | Table 6 — Recording levels and acceptance criteria for angle-beam probes for DGS techniquea Table 7 — Recording levels and acceptance criteria for angle-beam probes for DAC techniquea, b, c 15 Sizing |
| 58 | 16 Test report |
| 59 | Annex A (informative) Maximum testable depth for corresponding beam path range for circumferential angle-beam scans Figure A.1 — Maximum testable depth and corresponding beam path range for circumferential angle-beam scans |
| 60 | Table A.1 — Maximum testable depth and corresponding beam path range |
| 61 | Annex B (informative) Amplitude of indication in dB relative to % DAC Table B.1 — Amplitude of indication in dB relative to % DAC |
| 62 | Annex C (informative) Significant technical changes to the version EN 10228-4:1999 |
