ISO 24394 v201812 Welding for aerospace applications
—Qualification test for welders and welding operators
— Fusion welding of metallic components
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Foreword…………………………………………………………………………………………………………………………………………………………………….v
Introduction…………………………………………………………………………………………………………………………………………………………….vii
1 Scope………………………………………………………………………………………………………………………………………………………………….1
2 Normative references…………………………………………………………………………………………………………………………………………1
3 Terms and definitions…………………………………………………………………………………………………………………………………………..1
4 Qualification test requirements……………………………………………………………………………………………………………………………3
4.1 General………………………………………………………………………………………………………………………………………………………… 3
4.1.1 Specific to the welder qualification test………………………………………………………………………………………….. 3
4.1.2 Specific to the welding operator qualification test………………………………………………………………….. 3
4.2 Welding processes………………………………………………………………………………………………………………………………….. 4
4.3 Welding positions………………………………………………………………………………………………………………………………………. 4
4.4 Product types/semi-finished products applicable to welder qualification tests……………………… 5
4.5 Material groups………………………………………………………………………………………………………………………………12
4.6 Material thickness………………………………………………………………………………………………………………………………13
4.6.1 Butt weld material thickness………………………………………………………………………………………………………………13
4.6.2 Fillet weld material thickness…………………………………………………………………………………………………………….13
4.6.3 Casting repair material thickness…………………………………………………………………………………………………….13
4.7 Special qualification tests……………………………………………………………………………………………………………………13
4.7.1 General requirements………………………………………………………………………………………………………………………13
4.7.2 Special qualification tests for welders…………………………………………………………………………………………..13
4.7.3 Special qualification tests for welding operators……………………………………………………………………14
4.8 Designation for qualification test……………………………………………………………………………………………………14
4.8.1 Welder qualification test……………………………………………………………………………………………………………..14
4.8.2 Welding operator qualification test……………………………………………………………………………………………15
5 Conditions required for welder and welding operator qualification tests……………………………………..15
5.1 Physical requirements for welder and welding operator……………………………………………………………………..15
5.2 Person responsible for welder and welding operator qualification tests……………………………………16
6 Performing the welder and welding operator qualification test……………………………………………………………16
6.1 Practical qualification test……………………………………………………………………………………………………………..16
6.1.1 General requirements…………………………………………………………………………………………………………………16
6.1.2 Specific requirements for the welder qualification test………………………………………………………16
6.2 Theory test………………………………………………………………………………………………………………………………… 17
7 Test pieces……………………………………………………………………………………………………………………………………..17
8 Examination and testing………………………………………………………………………………………………………………..20
8.1 General………………………………………………………………………………………………………………………………………20
8.2 Visual and dimensional examination………………………………………………………………………………………21
8.3 Surface imperfection detection……………………………………………………………………………………………………..21
8.4 Radiographic examination…………………………………………………………………………………………………………….21
8.5 Metallographic examinations…………………………………………………………………………………………………………22
8.6 Bend test…………………………………………………………………………………………………………………………………..22
8.7 Fracture surface examination………………………………………………………………………………………………………..22
9 Acceptance criteria……………………………………………………………………………………………………………………………22
10 Qualification test certificate and documentation……………………………………………………………………………………22
11 Period of validity of the qualification…………………………………………………………………………………………………….23
12 Requalification test……………………………………………………………………………………………………………………………23
Annex A (normative) Test piece acceptance criteria……………………………………………………………………………………….24
Annex B (normative) Welder/welding operator qualification test record according to ISO 24394………………………31
Annex C (informative) Welder qualification test certificate………………………………………………………………………………32
Annex D (informative) Welding operator qualification test certificate……………………………………………………………….33
Annex E (informative) Guidelines for the theory test…………………………………………………………………………………………..35
Bibliography……………………………………………………………………………………………………………………………………………………39