Ladle cover device for pressure magnesium adding

Abstract

The invention provides a ladle cover device for pressure magnesium adding, and belongs to the technical field of pressure magnesium adding. The ladle cover device comprises a ladle cover, multiple clamping mechanisms and a sealing mechanism, the ladle cover is provided with a first through hole used for vertical sliding of a lifting column, and the ladle cover is used for sealing an opening in the upper end of a spheroidizing ladle; the multiple clamping mechanisms are arranged at the upper end of the ladle cover, distributed in the circumferential direction and used for tensioning the upper end edge of the spheroidizing ladle and generating tensioning force between the ladle cover and the spheroidizing ladle, and the tensioning force of the clamping mechanisms can be adjusted; and the sealing mechanism is fixedly arranged in the center of the upper end of the ladle cover and provided with a second through hole allowing the lifting column to penetrate through, the lifting column vertically slides in the sealing mechanism, and the sealing mechanism and the lifting column are in sliding sealing connection. The ladle cover device for pressure magnesium adding has the technical effects that the clamping force between the ladle cover and the spheroidizing ladle is large, the sealing performance between the lifting column on the ladle cover and the ladle cover is good, and potential safety hazards do not exist when molten iron is subjected to magnesium adding spheroidizing.

Description

technical field [0001] The invention belongs to the technical field of pressure adding magnesium, and more specifically relates to a capping device for pressure adding magnesium. Background technique [0002] Ductile iron pipe refers to the pipe made by casting molten iron above No. 18 and adding a nodularizer, and then centrifugally cast at a high speed by a centrifugal ductile iron machine; A magnesium gun is arranged on the bag cover of the spheroidizing bag, and magnesium ingots are arranged on the magnesium lance; in the prior art, when molten iron is spheroidized with magnesium, the bag cover is directly pressed on the spheroidizing bag; The pressure of the spheroidizing bag is small, or the clamping force between the two is small. When the pressure inside the spheroidizing bag is higher than the external pressure, it is easy to jack up the bag cover, posing a safety hazard. In addition, the lifting column is vertically slidably connected to the bag cover, and the low...

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a capping device for pressure adding magnesium, which aims to solve the problem of clamping between the cap and the spheroidizing bag in the prior art. The tightening force is small, the sealing between the lifting column on the ladle cover and the ladle cover is not good, and there are technical problems of potential safety hazards when adding magnesium to the molten iron.

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