Qualification for Brazing Mathias Lundin, Swedish Welding Commission Swedish Welding Commission - www.svets.se <= Mathias Lundin 1 Activities to controll = Tasks Review of requirements Operating procedures Technical review Documentation Sub-contracting Testing, storage and handling of brazing consumables and parent material Brazers and operators Heat treatment Brazing coordination Inspection and testing personnel Production equipment Inspection prior, during and post brazing Maintenance of equipment Non-conformance and corrective actions Production planning Calibration and validation Brazing procedure specifications (BPS) Identification and traceability Qualification of brazing procedures Quality records Swedish Welding Commission - www.svets.se <= Mathias Lundin 2 Qualification of brazing personnel ISO 13585 Brazing — Qualification test of brazers and brazing operators ”brazer ability to by hand manipulate the device for heating following a specification to reproduce a braze joint with acceptable quality” ”operator ability to follow a specification to reproduce a braze joint with acceptable quality” Essential variables => Range of qualification Key elements a) brazing process b) product type c) type of joint d) parent material group(s) Requirements for testing e) brazing filler metal type Acceptance criteria f) brazing filler application g) dimension (material thickness, outside pipe diameter and overlap length) h) filler metal flow direction i) degree of mechanization Standardized test pieces Essential variables Ranges of qualification Requirements for validity Requirements for certificate ISO/FDIS 13585 Swedish Welding Commission - www.svets.se <= Mathias Lundin 3 Qualification of brazing procedures ISO/PWI xxxxx Brazing – Qualification and specification of brazing procedures (revision of EN 13134) Verifying joint properties ”special process – since joint properties and integrity can not be fully verified with NDT after brazing, a procedure needs to be qualified and reproduced during production” Essential variables/range of qualification – different compared to personnel brazing process parent material group brazing filler and flux dimensions working temperature etc Swedish Welding Commission - www.svets.se <= Mathias Lundin 4 Qualification of brazing procedures Working order for procedure test preliminary “work instruction pBPS Braze test (brazing of standardized test piece) Verifing tests + evaluation (visual testing, NDT, destructive testing) Brazing Procedure Qualification Record (BPQR) BPS BPS BPS essential variables => range of qualification closer tollerances for instructing the operator Swedish Welding Commission - www.svets.se <= Mathias Lundin 5