MMP is a micro-machining process intended for the superfinishing of surfaces of metallic parts in a completely automated mode. It allows, by a mechanical- chemical reaction, a removal of matter from 1 to 40 µm and generates a surface state whose roughness can reach or to be higher than N1 on the ISO scale. The MicroMachiningProcess is used for the 2 following application domains; SuperPolishing that makes possible to automate the traditional polishing process and SuperBrightning, which generates new topologies of surfaces. One of the advantages of the MMP process, in particular in SuperBrightning area, resides in its faculty to give to surfaces new micro-structures. These micro-structures are able to increase consequently the aptitude of surfaces for the specific functions of use, as by examples: 

• Reduction of frictions and the slips
• Increasing in the wearing down resistance
• Improvement of the behavior of the deposits in thin layers, before and after coating. 

Generally speaking, SuperBrightning removes the secondary micro-roughness, which is the thickness of the asperities ranging between 0 and 20 µm , being located between crests of the primary micro-roughness of the part. 

SuperPolishing removes, partially or completely, the primary micro-roughness, between 10 and 40 µm, which is of course dependent of initial states of surfaces of the part to treat. 

Currently, the MMP process is applicable to the following types of materials : 

• Annealed and hardened steels
• Copper and its alloys
• Tungsten carbides – Hard Metal
• Cast irons
• Inconel  (nickel basis)
• Titanium
• In mode of preparation of surfaces before and after hard coatings (PVD, CVD, electroplating)