Welding processes and equipment
Measurement of shielding and backing gases
Flow, pressure, leakage, residual oxygen, dew point and atmosphere exchange for weld-pool shielding and root purging.
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Flow, pressure, leakage, residual oxygen, dew point and atmosphere exchange for weld-pool shielding and root purging.
The module links the metallurgical purpose, physical equipment principle, measurement method, metrological traceability and required production record.
Module contents
- Rotameter, nozzle flow and mass-flow measurement
- Residual oxygen and dew point
- Turbulence, draught, leakage and nozzle restrictions
- Interactive purge-volume model
- EN ISO 14175, ISO 15609 and ISO 17662
Educational content does not replace current standards, approved WPS/WPQR documentation or decisions by competent welding coordination personnel.
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