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LAFRE D

 

Chrome-free high-grade anti-corrosion surface treatment technology suits any environment versatile

 

LAFRE® D metal finish is a chrome-free high-grade anti-corrosion surface treatment technology which was developed for steel products such as high tensile bolts to prevent delayed fracture due to hydrogen embrittlement. LAFRE® D metal finish consists of 2 coatings; the zinc-flake rich paint basecoat the iron/steel substrate, and the topcoat containing mainly an organic (epoxy) or non-organic (silicate) resin. The application of processed material is performed by immersion or spraying and then baked in temperatures between 180°C to 300°C.

 

Coating structurre and the corrosion prevention mechanism

 

Coating structurre

 

 

Features

Superior corrosion resistance

Durable under salt spray test for over 1,000 hours

Free from hydrogen embrittlement

Pickling and electrolytic processes are not necessary, which makes it invulnerable to delayed fracture of hydrogen embrittlement.

Chrome-free

Free from toxic substances such as chrome, lead and cadmium

Low processing temperature

The baking temperature below 200°C protects the products from metallographic changes.

Chemical resistance

Available by special order, Disgo® can be specially prepared to withstand acidic rain

Heat resistance

Heat resistance up to 300°C is available on request

 

 

Test

 

Test

 

 

 

 

 

 

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