Presentation

The MAM process can be realised under high magnetic induction in the work zone. In such strong magnetic fields many magnetic and electric effects take place and other physical-chemical processes of energy exchange and mass transfer on atomic-molecular level are activated. These phenomena favourably bring the structure of the processed material to an equilibrium state and "heal" numerous structure defects. Great advantage of MAM is the acting of a flexible tool leading to significant reduction of the normal machining forces. This allows for very small loads on the work piece and therefore prevents from the generation of new sub-surface damage. And, MAM is resulting in an advantageous nano-relief of the polished surface with a minimum of structural defects. Besides, MAM can realize a huge range of removal rates and can therefore be applied as an effective machining process from preliminary over finishing to corrective machining operations.

Purposes

  • polishing surfaces before coating
  • cleanup of surfaces before welding
  • cleanup of rolling from oxide films
  • polishing contacting bodies

Features

  • ferroabrasive powder in the magnetic field gets a kind of an "elastic brush" and polishes a produce surface
  • pulse magnetic field orders structure of a produce material

Technical characteristics

  • roughness of a surface: Ra=200-0,7 nm
  • dimensional material removal, 3-300 µm
  • productivity (m/min): polishing 0,1-0,5, cleanup: 1-9

Advantages

  • surface with minimum of structure defects is formed
  • environmental purity
  • economy

Comparison of MAM and MRF technologies