(57) Abstract Objective Ideal parabolic pole face dieMaking use of the pole face, furthermore the pole destal by the suction forceThe fact that it contacts is prevented. Constitution Permanent magnet 44,46 through the base 56, the rackTo install in base 45, permanent magnet 46 through the base 62Installing in firing base 47, permanent magnet 44,46 opposition layoutIt does. As for pole face 48,50 of permanent magnet 44,46 paraboIt is formed to ritsuku pole face die. Permanent magnetismIn both destals 52,54 of stone 44,46 space interval GThe te time, spacer 66,68 of the nonmagnetic body puts there,The rare te, contact of both pole destal is prevented.
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