Combined type continuous casting blank surface temperature measurement method and instrument

Abstract

The invention discloses a combined type continuous casting blank surface temperature measurement method and instrument. The combined type continuous casting blank surface temperature measurement method is characterized by comprising the two links of temperature measurement without a reflector and measurement with a reflector, building the relationship between the effective emissivity of the target area of measurement with the reflector and the effective emissivity of the target area of measurement without the reflector according to the multi-reflection principle of the Devos theory, and working out the casting blank surface temperature by building a double-wave-length radiation energy equation set of measurement without the reflector and measurement with the reflector. The temperature measurement instrument comprises a reflector (3), a motor transmission mechanism (5), an infrared temperature measurement probe (2), a calculation and control system unit (4) and a cooling system (7). The combined type continuous casting blank surface temperature measurement method and instrument resolve the problem of inaccurate temperature measurement caused by nondeterminacy of the emissivity, are suitable for a continuous casting site with complex measurement conditions, and finally participate and realize automatic control over the continuous casting process. The temperature measurement instrument can obtain stable and reliable infrared radiation energy signals to guarantee that the finally worked out temperature is accurate.

Description

technical field [0001] The invention relates to high-temperature surface temperature measurement, in particular to a casting slab surface temperature measurement method and a thermometer used in the iron and steel metallurgy continuous casting (continuous casting) field. Background technique [0002] In the iron and steel metallurgical continuous casting production site, continuous casting is a process in which a certain shape of billet is directly formed by controlling the solidification process of molten steel in the iron and steel production process. It is an intermediate link connecting steelmaking and steel rolling. The essence of continuous casting production process is the process of controlling the temperature and composition of molten steel, which is an important part of steelmaking production. Slab temperature is an important parameter information in the continuous casting process and is closely related to the quality of the slab. Accurately obtain the surface temp...

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Problems solved by technology

), it is also believed that the corresponding emissivity of the three primary color bands is consistent, but in practice, the emissivity is not only related to the wavelength but also related to the temperature of the measured object itself. The emissivity of multiple bands is inconsistent, so it will inevitably lead to measurement errors.

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