Ask for the proposed model and configuration, the selected operating mode, gas specification, measured flow and units, timing values and the observed sequence. Link these to identified samples, inspection results and an approval decision. Confirm saved-setting behaviour, documentation and service responsibilities as part of the purchasing review. A panel photograph or attractive bead alone is not complete acceptance evidence.

No. A timing change does not identify or repair every source of contamination or a defective gas-delivery arrangement. Record when the symptom occurs, inspect the setup using approved procedures and have qualified personnel assess persistent problems. Keep electrode preparation, joint cleanliness, gas delivery and the inspection result connected to the same sample before approving a change.

Keep the torch in the position required by the equipment instructions and approved procedure during the applicable post-flow interval. Moving it away can remove the intended coverage even while the valve remains open. Include torch-hold behaviour in operator instruction and sample verification rather than assuming that a longer timer compensates for uncontrolled torch movement.

There is no single setting that qualifies every TIG application. Use the specific machine's instructions and the approved welding procedure, then verify the sequence in a controlled trial. Published rules of thumb are starting context, not evidence that a particular joint or GWELD model is qualified. Record the conditions, observations and approval behind the adopted setting.

TIG pre flow delivers shielding gas before arc initiation, while post flow continues gas delivery after the arc ends. Both are duration settings, usually expressed in seconds, rather than flow-rate settings. Confirm the selected machine's operating mode and instructions, then document the actual start-and-stop sequence with the representative sample and the applicable acceptance requirements.

Record the model, operating mode, balance value and display definition, other controls and units, identified material and joint, preparation, torch, tungsten, filler, shielding and welding sequence. Add inspection results, deviations and the approval decision. Link every setting change to a sample so a supplier demonstration can support a traceable purchasing and production discussion.

No. A visible etched band is an observation of surface cleaning action, not a substitute for the project's weld acceptance criteria. Keep photographs linked to identified samples and the setup record. Use the specified inspection method and release authority to decide whether the actual joint is acceptable for its intended service.

No. AC balance concerns the time division between polarities, AC frequency describes AC cycles per second, and pulse concerns current modulation. Record the full control names and units separately. Some machines also offer independent EN and EP current controls. Confirm which functions operate together on the selected model before transferring a saved setup.

AC balance describes the division of an AC welding cycle between electrode-negative and electrode-positive time. Check the exact model's manual to learn whether its display represents EN time, EP time or a cleaning scale. Record that definition beside the selected value so the setup can be interpreted correctly during a trial or shift handover.

Send alloy grades, joint drawings or photographs, surface-finish requirements, representative workload, destination electrical supply and the acceptance plan. Ask GWELD to confirm model-specific functions, approved consumables, training and support. If passivation is required, identify the governing specification and request a defined sample evaluation rather than assuming every cleaning model qualifies.