ISO 17927-1:2020

INTERNATIONAL ISO
STANDARD 17927-1
First edition
2020-03
Welding for aerospace applications —
Fusion welding of metallic
components —
Part 1:
Process specification
Soudage pour applications aérospatiales — Soudage par fusion des
composants métalliques —
Partie 1: Spécification de processus
Reference number
©
ISO 2020
© ISO 2020
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ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Conformance . 3
5 Classification and inspection requirements of joints . 3
6 Quality levels . 4
7 Weldment design . 4
8 Welding procedure specification (WPS) . 4
8.1 General . 4
8.2 WPS qualification/welding procedure qualification record (WPQR) . 6
9 Fabrication . 7
9.1 General . 7
9.2 Identification and traceability of welding consumables . 8
9.3 Storage and use . . 8
9.3.1 Filler material . 8
9.3.2 Welding fluxes . 8
9.3.3 Gases . 8
9.4 Welding equipment . 8
9.4.1 General. 8
9.4.2 Calibration . 8
9.5 Weld joint preparation . 9
9.5.1 Pre-weld joint configuration. 9
9.5.2 Butt joint members of unequal thickness . 9
9.6 Pre-weld cleaning and other preparation .10
9.6.1 Surface cleaning .10
9.6.2 Protection and recleaning of cleaned surfaces before fit-up .10
9.7 Preheating and interpass temperature control .10
9.8 Tack welds .10
9.9 Run-on, run-off tabs and beam stopper .11
9.10 Weld shielding .11
9.11 Spatter protection .11
9.12 Filler materials .11
9.13 Interpass cleaning .12
9.14 Welding and weldments .12
9.14.1 General.12
9.14.2 Weld settings .12
9.14.3 Arc strike.12
9.14.4 In-process correction .12
9.14.5 Post-weld processing .13
9.15 Weld identification requirements.13
9.15.1 Weld traceability .13
9.15.2 Acceptance inspection .13
9.15.3 Acceptance criteria .14
9.16 Rework .14
9.16.1 General.14
9.16.2 Allowed number of rework attempts .14
9.16.3 Root area rework .14
9.16.4 Inspection of the rework .14
9.16.5 Documentation of rework .14
9.17 Repair .14
9.17.1 General.14
9.17.2 Repair instructions .14
9.18 Record requirements .15
9.19 Welding parameters .15
9.20 Reproducibility tests for qualified machine welding settings .15
9.20.1 Applicability of requirements .15
9.20.2 Test requirements .15
10 Personnel .15
10.1 Welding coordination personnel .15
10.2 Qualification of welders and welding operators .15
10.3 Qualification of inspection personnel .15
10.3.1 Qualification of non-destructive testing (NDT) personnel .15
10.3.2 Visual weld inspectors .16
11 Inspection methods .16
11.1 Visual weld inspection.16
11.2 Non-destructive testing .16
11.2.1 General.16
11.2.2 Penetrant testing (PT) .16
11.2.3 Magnetic particle testing (MT) .16
11.2.4 Radiographic testing (RT) .17
11.2.5 Ultrasonic testing (UT) .17
11.2.6 Other non-destructive test methods .17
11.3 Destructive testing .
...