Device and method for dynamically observing and simulating behaviors of molten drops in electric slag remelting process

Abstract

The invention relates to a device and a method for dynamically observing and simulating behaviors of molten drops in an electric slag remelting process, belonging to the technical field of metallurgy. The device comprises a quartz beaker, an insulating bracket, a pressure regulator, an infrared thermal imager and a high-speed camera, wherein the quartz beaker and a dividing ruler are located on a platform; a fixed pulley device is suspended on an upper crossbeam, and a Wood's metal round bar is suspended on a rope or a movable cross beam; the Wood's metal round bar is connected with the pressure regulator, and the lower part of the Wood's metal round bar is inserted into a conducting solution; the infrared thermal imager and the high-speed camera are opposite to the bottom end of the Wood's metal round bar. The method comprises the following steps: (1) adjusting the insertion depth of the Wood's metal round bar inserted in the conducting solution, and applying an electric current; (2) generating the molten drops at the bottom end of the Wood's metal round bar, and then the molten drops drip; (3) carrying out real-time dynamic photographing on the dripping process of the molten drops; and (4) observing the temperature distribution of a slag pond in the generation and dripping processes of the molten drops. According to the device and the method, the changes on the morphology and size of an electrode when the molten drops are generated from the tail end of the electrode and drip can be clearly observed in detail.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a device and method for dynamically observing and simulating the behavior of molten droplets in an electroslag remelting process. Background technique [0002] During the electroslag remelting process, the droplet formation and droplet behavior at the electrode melting end, and the shape and size changes of the droplet not only affect the surface renewal of the metal droplet but also are closely related to the heat transfer at the slag-gold (droplet) interface. In turn, it affects the physical and chemical reactions at the slag-gold interface and the removal of impurity elements in metal droplets, which has an important impact on the quality, composition and purity of electroslag ingots. However, under the conditions of industrial production practice, since the smelting system is in a high temperature, opaque state and there is a water-cooled crystallizer, it is im...

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Problems solved by technology

However, because the droplet formation and dripping process at the end of the electrode melting is very short, the device provided by this method cannot more clearly and detailedly observe the shape, size and temperature of the molten pool during the droplet formation and dripping process.

[0005] The document "The role played by the electric current on metal droplet formation in the ESR process" uses a similar device to replace the consumable electrode, slag and crystallizer with Wood's alloy, NaCl solution and glass beaker, respectively, to simulate the weight of electroslag. During the melting process, the distance between the consumable electrode (Wood alloy rod) and the other electrode (Mo ring) is maintained at a constant value through the corresponding control system. However, due to the large density difference between Wood's alloy and NaCl solution, the drop process is very short, and the shape of the droplet changes a lot, so the device system provided by this document is also not clear and detailed. Earth observation of the dynamic change behavior of the droplet formation and droplet process, unable to observe the size of the droplet and the temperature field of the molten pool

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