Every component begins with a flawless surface. Multi-stage alkaline and solvent cleaning strips oils, grease and scale — followed by rinsing and controlled drying to establish the perfect foundation for coating adhesion.
Surface activation through precision shot blasting cleans and micro-roughens the substrate to maximise mechanical adhesion. Each method is matched to the part's size, geometry and tolerance.
GEOMET® zinc flake is applied as overlapping zinc-aluminium lamellae. Dip-spin, dip-drain and spray methods deliver a uniform 8–12 µm film with zero hydrogen embrittlement — ideal for high-strength fasteners.
Controlled thermal curing between 200 °C and 320 °C cross-links the lamellar layers into a hard, dense, electrically conductive and sacrificial barrier that won't chip, flake or peel.
Every lot undergoes 100% visual and analytical inspection. XRF measures film thickness while adhesion, curing and friction are verified — and each compliant batch is barcode trace-tagged for full accountability.
An in-house laboratory validates every batch — neutral salt spray to 720–1000 hours without red rust, coefficient-of-friction testing, optical microscopy and XRF analysis — all to recognised international standards.
Parts are degreased and abrasive-blasted to bright, activated steel — the clean foundation a diffusion bond depends on.
Cleaned parts are sealed into a rotating retort with zinc powder and inert ceramic media so every surface is evenly reached.
Heated to roughly 380–450 °C, below zinc’s melting point, zinc diffuses into the steel to form a hard zinc-iron alloy — completely dry, with no effluent.
Parts cool through a controlled cycle; an optional passivation or sealer adds extra corrosion resistance and colour.
Coating thickness and uniformity are verified, with neutral salt spray confirming 3000+ hours of protection.
Alkaline degrease, acid pickle and rinsing strip oils and oxides down to a chemically clean, active surface.
Parts become the cathode in a zinc or zinc-nickel electrolyte; direct current deposits a uniform metal layer — even in recesses.
Multi-stage cascade rinses remove dragged-out electrolyte before finishing.
A trivalent, Cr(VI)-free passivate builds corrosion resistance and colour — blue, black or iridescent.
An optional sealer is applied, and high-strength parts are baked to relieve absorbed hydrogen.
Thickness, adhesion and salt spray are verified — up to 1000–1500 hours for zinc-nickel.
Parts are degreased and abrasive-blasted or etched to key the surface for maximum coating adhesion.
A primer / basecoat is spray-applied for adhesion and added corrosion resistance.
The PTFE fluoropolymer topcoat is sprayed to the target film thickness for a true non-stick surface.
Baking at 200–400 °C fuses the fluoropolymer into a continuous, durable non-stick film.
Thickness, adhesion, coverage and low-friction performance are verified before dispatch.
Send us your drawings or specs — our technical team responds within one business day.