Method for manufacturing magnetic heads

Details Method for manufacturing magnetic heads Method for manufacturing magnetic heads

1980-11-10

1982-09-28

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

65 43, 65 57, 65 58, 156 74, 264270, 264311, G11B 542

Patent

active

043511040

ABSTRACT:
In the method for manufacturing annular portions of magnetic heads, a gap between the confronting end surfaces of the magnetic heads is filled with glass. In one of the conventional processes, the glass is sucked into the gap by a capillary action of the gap, but bubbles are liable to form in the glass. The method according to the present invention comprises a step of heating the glass to a relatively low temperature capable of causing the glass to be flowable and applying a centrifugal force to the glass being heated in a rotatable support of a heating furnace. As a result of the centrifugal force, the tendency to form bubbles is considerably reduced as compared with the conventional methods.

REFERENCES:
patent: 2686390 (1954-08-01), Williams et al.
patent: 3819348 (1974-06-01), Murray

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