METHOD FOR dimidiate AN OBJECT MADE OF A MATERIAL BROS IN PARTICULAR A RING core of ferromagnetic material for a deflection unit deflecting FOR A TUBE AND FOR A TUBE WITH A RING CORE SHARED BY SUCH A METHOD.

摘要

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 independence upon the ratio between the heat supplied and the rate of movement v.