Non-contact high-temperature melt basic physical property measuring device and measuring method

Abstract

The invention relates to a non-contact high-temperature melt basic physical property measuring device and method. The device comprises a temperature adjusting and suspending system, a temperature measuring system, a melt movement and form optical measuring system, a fixed-point negative pressure delivery system and a device frame body platform. The temperature adjusting and suspending system suspends the sample and reaches a preset temperature condition; the temperature measuring system measures the temperature data of the sample; the melt movement and form optical measuring system is used for contour imaging of the high-temperature melt and calculating the density, viscosity coefficient and surface tension coefficient of the sample in the high-temperature melt state; and the fixed-point negative pressure delivery system is used for delivering the sample to a preset suspension position. The method mainly comprises the steps of sample pretreatment, programming, system adjustment and setting, sample suspension, sample temperature control, excitation loading, measurement of each sensor, data analysis, sample post-treatment and the like. According to the invention, physical quantities such as high-temperature melt density, viscosity coefficient, surface tension coefficient and the like can be measured in a non-contact control and signal acquisition mode.

Description

technical field [0001] The invention belongs to the field of material research, and in particular relates to a non-contact high-temperature melt basic physical property measuring device. Background technique [0002] The high-temperature melt basic physical property measurement technology is of great significance in the fields of basic material research and nuclear power safety research. In addition, in the fields of iron and steel, metallurgy, petrochemical and other production technologies, the basic physical property measurement technology of high temperature melt can also play a role in determining the physical properties of molten steel and measuring the viscosity change of blast furnace slag. [0003] The viscosity coefficient measurement of high-temperature fluid usually uses the principle of rotation method to determine the viscosity of the fluid by measuring the viscous moment of the fluid acting on the rotor or the rotational speed of the rotor. Existing viscomete...

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Problems solved by technology

[0004] There are certain limitations in the hanging wire or torque method measuring device in the existing rotation method principle viscometer, for example: the assembly process of the hanging wire is complicated, and the position of the hanging wire is difficult to coincide with the axis of the motor, making it difficult to control accurately and causing large errors; For example, when the distance between the heating device and the test device is relatively close, the temperature range is limited, generally only up to about 300°C; if the temperature measurement range is between 100-1000°C, the distance between the heating device and the test device is relatively long, during the test process In order to avoid the collision between the rotor and the crucible wall, a large distance must be reserved between the rotor and the crucible, thereby limiting the lower limit of the viscosity test (see CN105300842A)

Existing tube pulling method to measure surface tension and Archimedes method to measure density both involve some parts of the device in contact with high-temperature melt, which is easy to pollute and melt (CN105716997)

At the same time, temperature monitoring generally uses contact measurement methods such as thermocouples, and it is difficult for temperature-sensitive components to withstand high temperature or corrosion by salt substances for a long time.

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