Question

During finishing of stainless steel in R-MRAFF
process the most significant process parameter
is
(a) Rotational speed of the magnet
(b) Hydraulic extrusion pressure
(c) Number of finishing cycle
(d) Volume ratio of CIP/SIC​

Answer 1

Rotational speed of the magnet is the most significant parameter during finishing of stainless steel in R-MRAFF process.

Explanation:

• R-MRAFF is a polishing  method, it is the improved for the finishing performance of MRAFF process.
• In this method rotational magnetic field is used to enhance the performance.
• As well as reciprocating process is provided by hydraulic unit, hydraulic extrusion pressure is use for decrease roughness of the surface.
• The best surface finish obtained on stainless steel is 110 nm with R-MAFF process.
• Study shows that percentage improvement of surface is mostly effected by the rotational speed of magnet. Other parameter like hydraulic extrusion pressure, number of finishing cycle also effects the finishing of stainless steel.