Novel airtight protection cover device of electroslag furnace

Abstract

The invention discloses a novel airtight protection cover device of an electroslag furnace. The novel airtight protection cover device comprises an upper smoke cover. The lower end of the upper smokecover is provided with a middle smoke cover and a lower smoke cover in sequence. A clamping jaw is arranged on the outer side of the middle smoke cover. A lifting arm is arranged on one side of the clamping jaw. An inflatable sealing ring is arranged between the middle smoke cover and the upper smoke cover. The inflatable sealing ring is a hollow silicon rubber sealing ring. The inflatable sealingring is internally provided with an inflation cavity. One side of the surface of the inflatable sealing ring is provided with an air inlet nozzle. The novel airtight protection cover device of the electroslag furnace has the beneficial effects that a three-section smoke cover combination mode is adopted; sealing element structures are mounted between the three sections of the smoke covers to ensure the airtightness of the whole device; the oxygen content in a smelting space can be well controlled to be minimum through the novel airtight protection cover device, so that the quality and yield of smelted steel ingots are improved; and in the smelting process, consumption of required protective gas is greatly reduced, and the production cost and the safety risk are effectively reduced.

Description

technical field [0001] The invention relates to the technical field of metallurgical equipment, in particular to a novel airtight protective cover device for an electroslag furnace. Background technique [0002] Electroslag furnace is a kind of special smelting equipment that utilizes remelting current to generate heat energy to melt consumable electrodes inserted into slag pool. After metal droplets are cleaned by slag liquid, they are crystallized into electroslag ingots in water-cooled crystallizer. Electroslag furnace is an indispensable production equipment for special steel mills. Most electroslag furnaces are open, and the air humidity is high, which will cause porosity defects in the steel ingot and increase the hydrogen content. If the hydrogen content in the steel is high, white spots may occur, resulting in scrap and loss. Therefore, gas protection measures should be taken during electroslag remelting. [0003] In my country's traditional single-column support-a...

AI Technical Summary

Problems solved by technology

[0004] Some of the coaxial electroslag furnaces researched and designed in China or imported from abroad do not have a protective cover device, and the protective cover device of some equipment is a double-door or four-door protective cover with other structures. The overall airtight effect is the same not good

Resulting in a reduction in the quality and yield of the smelted steel ingots

At present, many steel enterprises adopt the method of increasing the gas supply of protective gas (argon) to reduce the oxygen content in the smelting space, thus increasing the production cost and safety risk

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