Metal electroslag remelting smelting atmosphere protection method

Abstract

The invention discloses a metal electroslag remelting smelting atmosphere protection method. According to the method, a protector and an inert gas source, which are connected with each other, are arranged in a metal electroslag remelting smelting device, and a protector is used for spraying inert gas into the metal electroslag remelting smelting device to carry out the atmosphere protection in the smelting process. The metal electroslag remelting smelting atmosphere protection method is characterized by arranging the protector at the position near the part above a metal electroslag remelting solution when in smelting, and linking the protector to an electrode rod, so that when the electrode rod gradually falls and the liquid surface rises, the protector is linked to the liquid surface to rise, and the protector and the liquid surface stay in a fixed height range so as to guarantee the atmosphere protection effect of the liquid surface. By adopting the method, the follow-up atmosphere protection can be realized along with the rising of the liquid surface. The method has advantages of simplicity in implementation, stability and reliability in operation and good atmosphere protection effect; moreover, the smelting effect can be improved.

Description

technical field [0001] The invention relates to a metal smelting technology, in particular to an atmosphere protection method for metal electroslag remelting smelting. Background technique [0002] Metal electroslag furnace (also known as electroslag remelting furnace) is a kind of metallurgical equipment that uses the resistance heat generated when current passes through slag as a heat source for smelting. Its structure mainly includes a furnace-like crystallizer as a whole, located on one side of the A vertical column is provided above the column, and a transverse cantilever is arranged on the horizontal cantilever, and an electrode rod extending downward into the crystallizer is installed on the horizontal cantilever against the crystallizer by the electrode rod chuck. [0003] When the electroslag furnace is smelting, the electroslag is put into the crystallizer, and a slag pool to be melted is formed above the crystallizer. The electrode rod chuck is used to clamp the c...

AI Technical Summary

Problems solved by technology

However, during the smelting process of the electroslag furnace, the metal liquid level will have a process of rising as the electrode rod descends, so the atmosphere protection device needs to be set at a position higher than the liquid level in order to avoid interference with the rising liquid level. There is a large space between the gas jet and the molten metal, it is difficult to exhaust the air, and it is difficult to achieve a good protective effect

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