Fronius TTB 80 G Manual De Instrucciones página 69

Porosity of weld seam
Cause: Spattering in the gas nozzle, causing inadequate gas shield for weld seam
Remedy: Remove welding spatter
Cause: Holes in gas hose or imprecise gas hose connection
Remedy: Replace gas hose
Cause: O-ring at central connector is cut or faulty
Remedy: Replace O-ring
Cause: Moisture/condensate in the gas line
Remedy: Dry gas line
Cause: Gas flow too strong or weak
Remedy: Correct gas flow
Cause: Inadequate quantity of gas at the start or end of welding
Remedy: Increase gas pre-flow and gas post-flow
Cause: Too much parting agent applied
Remedy: Remove excess parting agent/apply less parting agent
Poor ignition properties
Cause: Unsuitable tungsten electrode (e.g., WP electrode for DC welding)
Remedy: Use suitable tungsten electrode
Cause: Wearing parts loose
Remedy: Screw on wearing parts tightly
Gas nozzle is cracked
Cause: Tungsten electrode not protruding far enough out of the gas nozzle
Remedy: Have tungsten electrode protrude more out of the gas nozzle
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