Surface roughening treatment method of object being treated, and apparatus therefor

摘要

Disclosed are a method of causing abrasive grains to collide against and contact with an object being treated to form surfaces of the object being treated into a matte, specifically, a rotational magnetic field is applied on magnetic abrasive grains to cause the same to vibratingly move at random to collide against and contact with an object being treated to obtain a matte.