Australian offshore projects are widely distributed across coastal ports, offshore platforms, LNG facilities, and offshore wind energy zones. These steel structures are continuously exposed to salt spray, humidity, and intense UV conditions, placing high demands on corrosion protection systems.

Thermal spray zinc systems are widely used in offshore steel corrosion protection because of their cathodic protection properties. However, spray gun clogging remains a common issue during field operations.

Offshore construction environments have high humidity, making zinc wire more susceptible to surface oxidation during storage and operation. Oxide particles may accumulate inside the spray gun.

Salt particles in the air can adhere to equipment and material surfaces. Without proper cleaning control, salt contamination and oxides may interfere with melting stability.

Australian offshore projects often involve large-area continuous spraying operations. Long-duration high-load operation amplifies feeding and melting instability.

If zinc wire contains elevated levels of lead, iron, or oxide impurities, melting stability may be affected. Partially melted material can accumulate near the nozzle.

Thermal spray equipment requires stable wire diameter. Excessive diameter tolerance variation may cause feeding interruptions and arc instability.

Industrial projects commonly require ±0.01mm tolerance control.

Processing scratches or oxidation layers on the zinc wire surface increase feeding friction, further affecting spray gun stability.

Offshore projects commonly recommend 99.9%–99.995% high-purity zinc wire. Low-impurity materials improve melting consistency.

Low-oxidation and smooth-surface zinc wire is more suitable for continuous spraying and helps reduce internal nozzle deposition.

Uniform spool tension reduces feeding instability risk. Large offshore projects place strong emphasis on continuous operational stability.

Spray gun clogging in Australian offshore zinc spraying operations is not caused by equipment failure alone, but by the combined effects of salt spray exposure, material purity, surface oxidation, and feeding stability.

For offshore thermal spray projects, high-purity low-impurity zinc wire, stable diameter control, and standardized storage management are essential for reducing clogging risk and maintaining spraying stability.