Dual-thermocouple test apparatus for crystallization property of continuous casting mould casting powder

Abstract

The invention relates to a dual-thermocouple test apparatus for crystallization property of continuous casting mould casting powder. The apparatus comprises an imaging device, a reaction chamber, a heating and temperature measurement device, and a central processing unit. The central processing unit comprises a data acquisition device and an image recording device. Both sides of the reaction chamber are symmetrically provided with two ducts. The imaging device is arranged above the reaction chamber, and forms an electrical connection with the central processing unit. The heating and temperature measurement device comprises two thermocouples, and forms an electrical connection with the central processing unit. According to the present invention, the apparatus is simple; the operation is convenient; the two thermocouples are adopted to carry out heating and temperature measurement for the casting powder, such that the real operating conditions among the casting billet inside the continuous casting mould, the casting powder and the continuous casting mould wall are simulated, in situ observation, record, measurement of the thermophysical properties of the fusion process and the phase change process of the casting powder are achieved; the tested result by the apparatus of the present invention is close to the actual production, and provides high reliability when the result is used to guide the production process; the apparatus is applicable for rapid detection of the thermophysical properties of the fusion process and the phase change process of the casting powder in the continuous casting production line.

Description

technical field [0001] The invention discloses a double thermocouple testing device for the crystallization performance of mold slag in a continuous casting crystallizer, belonging to the technical field of casting process control. Background technique [0002] Mold powder technology is one of the key technologies of modern continuous steel casting process. Mold powder is a necessary consumable material in the continuous casting process. Mold powder is used in the mold to control the molten steel environment and prevent steel leakage. The main metallurgical function of obtaining the best surface quality billet is: to isolate the air and protect the liquid steel surface from the secondary oxidation of the air; to insulate the liquid steel surface to prevent premature solidification or crusting; to absorb and melt non- Metal inclusions; acting as a lubricant between the slab and the mold, a layer of liquid slag with suitable properties and uniform thickness is required between...

AI Technical Summary

Problems solved by technology

[0005] At present, the single thermocouple method is usually used to test the crystallization properties of the mold powder at home and abroad. Since the single thermocouple can only use one thermocouple to raise the temperature, it can only test the thermal properties of the mold powder in the process of melting, isothermal and continuous cooling. The obtained parameters and protection There are large differences in the actual working conditions of slag in the continuous casting mold, so the reliability of the results used to guide the production process is low

Images