Qualification for brazing
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Qualification for Brazing. Mathias Lundin, Swedish Welding Commission. Activities to controll. = Tasks. Operating procedures Documentation Testing, storage and handling of bra-zing consumables and parent material Heat treatment Inspection prior, during and post brazing

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Qualification for Brazing

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Qualification for brazing

Qualification for Brazing

Mathias Lundin, Swedish Welding Commission


Activities to controll

Activities to controll

= Tasks

  • 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

  • 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


Qualification of brazing personnel

Qualification of brazing personnel

ISO 13585Brazing — 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

  • Standardized test pieces

  • Essential variables

  • Ranges of qualification

  • Requirements for testing

  • Acceptance criteria

  • Requirements for validity

  • Requirements for certificate

  • brazingprocess

  • producttype

  • typeof joint

  • parent material group(s)

  • brazing filler metal type

  • brazing filler application

  • dimension (material thickness, outsidepipe diameter and overlaplength)

  • filler metal flowdirection

  • degreeofmechanization

ISO/FDIS 13585


Qualification of brazing procedures

Qualification of brazing procedures

ISO/PWI xxxxxBrazing – 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


Qualification of brazing procedures1

pBPS

Braze test (brazing of standardized test piece)

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

Brazing Procedure Qualification Record (BPQR)

BPS

BPS

BPS

Qualification of brazing procedures

Working order for procedure test

preliminary “work instruction

essential variables => range of qualification

closer tollerances for instructing the operator


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