SILICONE COATINGS

AVAILABLE TECHNICAL SOLUTIONS

Up to friction coefficients <0.02: aeronautics, automotive supply industry

It is also possible to benefit from the excellent friction properties of fluororesins on rubbing mechanical parts.

Many types of fluororesins display qualities and have other characteristics, not as well-known as the ones previously mentioned:

• Excellent adhesion on metal, light alloys, ceramics, cast iron
• Coating accuracy: we have the possibility to handle extremely strict tolerances for fine mechanics. Thicknesses of 3µ +/-1µ can be reached. For thicker treatments, we can for example obtain 10µ +/-3µ. It is even possible to adjust treated materials with a zero clearance fitting (bushel of a cylindrical valve for aeronautics industry).
• Under heavy loads, the friction coefficient can reach 0.02. Many applications result from the low static friction coefficient: bonding problems, either metal-metal, or rubber-metal in aeronautics and hydraulics are solved.

Fluorimid®, Fluoref® et Microflon® processes associate fluororesins with fillers aimed at reinforcing the basic resins. They allow metal/metal frictions without galling, without wear and with considerable friction coefficient decrease (down to 0.02). Any mechanical bonding effect is eliminated. Elastomers do not stick on a coated part. The stick slip effect is suppressed.

We generally treat only one part out of two: preferably the male part. The counterpart must have the best possible quality as to its roughness, hardness and geometry. Thermal stabilizations of the parts to be treated have to be considered if geometrical deformations are likely to occur.