Method of dividing a sintered oxidic ferromagnetic ring core and a deflection unit
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United States of America Patent
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Mar 6, 1990
Grant Date -
N/A
app pub date -
Feb 3, 1989
filing date -
Feb 11, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a method of dividing a ring core (42) of sintered oxidic ferromagnetic material in two semi-annular parts, in which dividing seams 40, 41 are formed in the ring core 42 by means of two spot-shaped heat sources 43 and 44. The spot-shaped heat sources 43 and 44 are moved across the ring core 42 along the lines 40, 41 at a velocity v. An accurate and controlled division of the ring core 42 is obtained independent of the ratio between the heat supplied and the rate of movement v.
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