Up to some years ago, the centreless finishing and the stone grinding were considered standards of technology for a precise surface finishing.

Nowadays the polishing belt grinding procedure, is called Microfinishing, this type of industrial finishing technology sets a new standard.

The microfinishing method realization optimizes the surface roughness and reduces the finishing time.

The microfinishing technologies guarantee lower prices on the finishing of a prefinished stainless steel metal surface.

Thanks to this method you can reach higher and reproducible surface finishing quality on nearly every kind of material.

To know more about this new microfinishing technology, please contact Tre-p.

The microfinishing improvements

Tre-p is one of the few suppliers in the world of these high technology systems, microfinishing improvements are guaranteed thanks to our technologies.

The surface structure is improved in the micron range – up to 0,02-0.03 µm Ra!

The main advantage of this method consists of the finishing over the entire surface. The super finish(this microfinishing procedure) improves the bearing ratio (Tp) resulting in a high wear resistance improvement. The achievable surface finishing quality is comparable to the levels reached only with the honing or lapping procedures.

Microfinishing removes the amorphous structure of the material, or “soft skin”.

Microfinishing enables the user to achieve nearly any-surface texture parameter, because only the roughness peaks are removed. Guaranteeing that the geometry of the workpiece remains unchanged.

The Process

This surface finishing process uses Microfinishing tape rolls and aluminium oxide grain sizes.

As the work piece is rotating, the microfinishing tape is creep-fed(alimented) by a speed-controlled motor. The film feed rate is adjustable in every moment. The tape is backed by a pressure controlled oscillating rubber contact roll. The continuous tape feed guarantees a constant finish over the entire surface.

The combination of the work piece rotation and the high frequency tape oscillation causes a random sinusoidal scratch pattern on the work piece surface. This is a wet operation, realized with the use of a coolant.

Microfinishing is able to cut the protruding peaks, with a really low Rpk final result.