logo MMP and mirror-like finish

A mirror-like surface requires the total elimination of all surface roughness. The MMP technology logo is capable of achieving such finishes by selectively filtering out successive levels of roughness without changing the basic form of the surface.

The diagram below demonstrates how MMP technology logo categorizes the different levels of roughness.



Using MMP technology logo to obtain mirror-like surfaces offers a number of advantages but also has some limitations.

MMP technology logo maps a surface as a collection of different frequencies of roughness. It then removes only the targeted frequency ranges, moving from the highest frequencies to lower ones. As a result of this extremely precise approach, MMP technology logo achieves mirror-like surfaces with far less material removal than traditional cutting action polishing processes

MIMLimiting the material removal to specific frequency ranges gives MMP technology logo other benefits that differentiate it from classic polishing processes. Since the frequencies of roughness MMP technology logo removes are significantly higher than the frequencies of the underlying form of the part, the resulting mirror-like finish leaves edges sharp and fine details undisturbed, meaning that MMP technology logo is very well suited to creating uniform mirror-like finishes on complex geometries.

However, since MMP technology logo is an isotropic (homogeneous) treatment, if obtaining a mirror-like surface requires removal of form errors (i.e. low frequency), MMP technology logo may not be a good solution. Defects in the form of the part will require localized removal of material, and probably a lot of material relative to the amounts MMP technology logo typically removes. In general, if a part requires non-homogeneous removal of material (i.e. changes to the actual shape of the part), MMP technology logo is not likely to be the best choice.

Mirror-like polishing is often required in luxury applications (watch-making, jewellery), medical implant and instrumentation applications, and plastic injection molding.

luxeIn the case of luxury goods, minimal removal of material is critical not only because the item needs to retain all of its subtle design details and sharp edges, but also because of the importance of preserving the maximum amount of the precious materials (i.e. gold, platinum) used to make the parts. To take advantage of MMP technology logo's minimal material removal, the initial surface should be free of shape defects. Typically a 320 grain grinding or a fine turning operation are appropriate prior to applying MMP technology logo. When these conditions are met, MMP technology logo can deliver a homogeneous mirror-like polish with far less material removal and greater retention of detail than can be attained using other polishing methods.

For medical and injection molding applications the emphasis is more focused on maintaining tolerances.
Often times MMP technology logo is the best path to a mirror-like finish for these applications because of its ability to preserve complex geometries while still delivering a uniformly polished surface. MMP technology logo's broad material and coatings compatibility is another benefit in these applications, and in many cases MMP technology logo also delivers shorter, more predictable lead times at lower cost.

MMP technology logo also creates mirror-like finishes on MIM and/or CIM parts, provided the initial surface is free of porosity.

In conclusion, depending on the applications and markets, the mirror-like surface produced by MMP technology logo is often the best choice due to low material removal, the ability to preserve the initial shapes and designs, an improvement of technical properties of the surface, reproducibility and homogeneity, accessibility to complex shapes, and superior lead times and overall cost.
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