| 摘要 |
The present invention concerns a multistage-electromagnetic purification method of molten metal, which relates to the field of casting technique. The method of present invention employs a multistage separator instead of a single-stage one. The multistage separator is composed of two or more multichannel straight-pass separators bonded together with inorganic high-temperature adhesive. Each stage of the separators should be set up in such a manner that the region of centerline of each channel in the former separator is occupied by the sidewall of the next separator at the corresponding position therein, simultaneously the position in the next separator, which is corresponding to the central region of the channel in former separator, becomes a region close to sidewall. By applying multistage separator instead of single-stage separator, the present invention could eliminate the "dead zone" of electromagnetic separation, realize the transformation from "weak zone" to "strong zone" of electromagnetic separation, and increase significantly the removing efficiency of inclusions in the melt with great volume under the effect of induced magnetic field.
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