Automated coating line, consistent batch after batch

Pre-treatment, powder application and curing run as one automated line inside the same plant as our press shop. Film thickness, colour and adhesion are controlled by equipment rather than by operator judgement, which is what keeps a repeat order looking like the first one.

Work envelope

Pre-treatment

Pre-treatment is a fully automated spray process. It removes oil and residue without leaving media behind, and because it is automated the result does not drift across a shift — which matters more than it sounds when a batch runs for days.

Powder storage and colour control

Powder is held in a temperature- and humidity-controlled room, so particle quality does not change with the season. Colour is specified from the RAL range and verified with a spectrophotometer and gloss meter on every batch.

Application and coverage

Powder output and voltage are monitored by computer in real time. For complex surfaces and structural parts we optimise spray angles so recesses and returns are fully covered.

Design review before tooling

We can review a part for coatability before anything is built. The review looks at edges, transition radii and hanging-point distribution to find where film thickness would build up or where a jig would shadow the surface. Finding that at design stage is far cheaper than finding it in production.

Curing

The oven is fitted with product temperature probes, so we monitor the actual part temperature rather than the air. Heat distribution is matched to the specified curing curve, which is how orange peel, blistering and colour shift are avoided.

Verification and documentation

Corrosion resistance is verified by salt spray testing to at least 500 hours, and up to 720 hours where a programme requires it. Each batch is recorded with its inspection data.