Polishing method

Details Polishing method Polishing method

1980-03-27

1982-11-09

Czaja, Donald E.

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

106 3, C09K 314

Patent

active

043582958

ABSTRACT:
A polishing method suitable for use in working a surface of a magnetic material such as materials of magnetic head into a mirror-finished surface. The work is placed in a treating liquid cell such that its surface to be worked is opposed by the surface of a lap. The treating liquid contains fine polishing grains of magnesium oxide as the polishing agent, by an amount less than 4 wt %, and may contain 10 to 30 wt % of glycerol for increasing the viscosity. As a relative movement occurs between the work and the lap, the treating liquid forms a state of a dynamic-pressure bearing between the opposing surfaces of the work and lap, so that the surface of the work is polished into mirror surface by the action of the magnesium oxide without contacting the lap directly.

REFERENCES:
patent: 3817727 (1974-06-01), Yancey
patent: 4021263 (1977-05-01), Rosenblum
patent: 4022625 (1977-05-01), Shelton
patent: 4162899 (1979-07-01), Molnar et al.
patent: 4242842 (1981-01-01), Yancey
Yoshiharu Namba et al., Ultra-Fine Polishing of Mn-Zn Ferrite and Magnetic Characteristic of Same, Department of Technology, Osaka University, Osaka, Japan, Mar. 3, 1978, pp. 1-6.

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