1. Qualification for Brazing
Mathias Lundin, Swedish Welding Commission

2. Activities to controll
= Tasks
Review of requirements
Technical review
Sub-contracting
Brazers and operators
Brazing coordination
Inspection and testing personnel
Production equipment
Maintenance of equipment
Production planning
Brazing procedure specifications (BPS)
Qualification of brazing procedures
Operating procedures
Documentation
Testing, storage and handling of bra-zing consumables and parent material
Heat treatment
Inspection prior, during and post brazing
Non-conformance and corrective actions
Calibration and validation
Identification and traceability
Quality records

3. Qualification of brazing personnel
ISO 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”
Key elements
Standardized test pieces
Essential variables
Ranges of qualification
Requirements for testing
Acceptance criteria
Requirements for validity
Requirements for certificate
Essential variables => Range of qualification
brazing process
product type
type of joint
parent material group(s)
brazing filler metal type
brazing filler application
dimension (material thickness, outside pipe diameter and overlap length)
filler metal flow direction
degree of mechanization
ISO/FDIS 13585

4. 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

5. Qualification of brazing procedures
Working order for procedure test
BPS
pBPS
Braze test (brazing of standardized test piece)
Verifing tests + evaluation (visual testing, NDT, destructive testing)
Brazing Procedure Qualification Record (BPQR)
preliminary “work instruction
essential variables => range of qualification
closer tollerances for instructing the operator