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Innovation & Technologie Angebot

Technology and equipment for magnetorheological finishing

Country of Origin: Belarus
Reference Number: TOBY20180207001
Publication Date: 9 February 2018

Summary

A Belarus R&D institute is offering ready to use technology and equipment for final treatment of flat, spherical, and aspherical surfaces of optical parts and substrates with root mean square accuracy of the shape up to λ / 150 and surface roughness up to 0.07 nm. They are looking for industrial partners or R&D organizations for commercial agreement with technical assistance or joint venture agreement.

Description

The R&D institute from Belarus specializing in research of industrial technologies has developed technology and equipment for magnetorheological finishing (MRF).



MRF is a method of surface treatment based on the rheological properties of magnetorheological polishing fluids (MPF) that is used to produce high-quality parts. In a magnetic field, the MPF becomes a viscoplastic medium, which acts as a polishing pad. 



Main advantages of proposes technology and equipment:  

- Precision, possibility to conduct treatment of surface without overheating and destruction of the material

- Dimensions of treated components: from 3 mm to 2.5 meter.



The equipment is milti-purpose and allows perfoming the following technological operations:

- Polishing - removing of the uniform layer from the surface

- Retouching - local surface treatment

- Form change from the spherical to aspherical. 



The equipment includes MRF computer numerical control (CNC) machines, modules and liquids for surface treatment:

- 3-5 coordinate CNC machines for MRF, made of natural stone, using linear drives

- 1-2 coordinate modules for modification of machines and coordinate systems

- Magnetorheological liquids on aqueous and non-aqueous basis.



Examples of MRF use:

- Super finishing of surface after traditional polishing or diamond grinding

- Planarization of wafers and thin films processing

- Replacement for chemical etching process

- Removal of defective surface layers

- Forming of an aspherical surface

- Production of segmented aspherical metal-optical elements.



Treated materials:

- Optical materials (glass, quartz, glassceramics)

- Optical ceramics (astropyroceramics, Zerodur)

- Laser crystals, including water-soluble (BBO, LiF, KDP, CaF2, MgF2)

- Super hard crystalline materials (SiC, Si3N4, SixNyOz, WC)

- IR materials (zinc chalcogenides ZnS and ZnSe; Ge)

- Semiconductor materials (Si, Ge, GaAs)

- Non-magnetic metals and alloys (Cu, Al, Cr, Ni, stainless steel) 

- Ceramic materials

- Thin films and coatings.



The R&D institute from Belarus is looking for commercial agreement with technical assistance or joint venture agreement with industrial partners or R&D organizations from EU or non- EU countries (except the US) interested in buying or joint production of the equipment.

Advantages and Innovations

The technology and equipment developed by the Belarus R&D institute allows to achieve accuracy of the shape up to 

λ / 150 and surface roughness up to 0.07 nm, while equipment of other companies allows to achieve only accuracy of the shape up to λ / 50 and surface roughness up to 5 nm.

Stage Of Development

Already on the market

Requested partner

Type of partner sought: company or  R&D organization.



Industrial partner interested in production of the equipment under joint venture agreement. 



Industrial partner or R&D organization interested in using the equipment under commercial agreement with technical assistance.