PURPOSE: To remove the lowering of the efficiency of a pump due to a temperature rise by forming a core in a columnar refractory body of alloy having a higher Curie point and smaller temperature change in permeability than pure iron or silicon iron.
CONSTITUTION: The lower section of an electromagnetic pump 1 proper is dipped in a molten metal 2, and the molten metal 2 drawn up by electromagnetic induction is discharged from a tapping gutter 3. A columnar refractory body 4 is mounted at the central section of the electromagnetic pump 1, and a core 4a is housed in the columnar body 4. An alloy having a Curie point higher than pure iron or silicon iron and the small temperature change of permeability is used as a metal forming the core 4a. A refractory conduit 5, a protective pipe 6, a casing 7 and a refractory material 8 are disposed outside the columnar body 4 in succession.
TADOKORO MASAHIRO
NAKAI YASUHIRO
IKEGUCHI HIDEO
| JPS56123792A | 1981-09-29 |