The invention relates to a solidification orientation device under a
magnetic field, and belongs to the technical field of
electromagnetic casting. The device comprises a cylindrical cooling
copper die connected with a shell through a second
flange, the shell is connected with a sealing cover through a first
flange, an air inflation hole is formed in the first
flange, a
crucible is fixed in the shell, and a gap is reserved between the
crucible and the shell and communicated with the first flange; the outer wall of the
crucible is wound with an
induction heating coil, a
casting opening is formed in the bottom of the crucible, a
casting control lever is arranged in the crucible, and the
casting opening can be plugged in a casting sealing manner when the casting control lever downwards moves; a through hole and an air through hole are formed in the bottom of the shell, the gap and the second flange are communicated through the air through hole, and an exhaust hole is formed in the second flange; and a steady-state
magnetic field generator is arranged outside the cooling
copper die, a base plate of the cooling
copper die is provided with a ring-shaped groove homocentric with the inner wall of the cooling copper die, a
quartz tube is installed in the groove, and a conic diverter is arranged at the top of the
quartz tube. The solidification orientation device is simple in structure and convenient to use; and studying of the included angle relationship between multiple different solidification organization growth directions and the
magnetic field direction can be achieved in one experiment.