1Mathias Lundin<=Swedish Welding Commission - www.svets.se

Qualification for Brazing

Mathias Lundin, Swedish Welding Commission

2Mathias Lundin<=Swedish Welding Commission - www.svets.se

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

Activities to controll = Tasks

3Mathias Lundin<=Swedish Welding Commission - www.svets.se

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”

a) brazing process

b) product type

c) type of joint

d) parent material group(s)

e) brazing filler metal type

f) brazing filler application

g) dimension (material thickness, outside pipe diameter and overlap length)

h) filler metal flow direction

i) degree of mechanization

Essential variables => Range of qualification

”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

ISO/FDIS 13585

4Mathias Lundin<=Swedish Welding Commission - www.svets.se

ISO/PWI xxxxx Brazing – Qualification and specification of brazing procedures(revision of EN 13134)

Verifying joint properties

brazing process

parent material group

brazing filler and flux

dimensions

working temperature

etc

Essential variables/range of qualification – different compared to personnel

Qualification of brazing procedures

”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”

5Mathias Lundin<=Swedish Welding Commission - www.svets.se

Working order for procedure test

Qualification of brazing procedures

BPS BPS BPS

pBPS

Braze test (brazing of standardized test piece)

Verifing tests + evaluation(visual testing, NDT, destructive testing)

Brazing Procedure Qualification Record (BPQR)

closer tollerances for instructing the operator

essential variables => range of qualification

preliminary “work instruction