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Infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and preparation method thereof

A technology of infrared temperature measurement and temperature measurement tube, which is applied in the direction of radiation pyrometry, measurement device, optical radiation measurement, etc., can solve the problems of pollution of the optical channel of the temperature measurement tube, and achieve the solution of smoke and volatile pollution, blackness Large, good slag resistance effect

Inactive Publication Date: 2011-10-19
ANHUI HEPURE CERAMIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the present invention is to provide a new type of infrared temperature measuring tube, which has stable physical and chemical properties and does not produce smoke and volatiles during the initial heating process, thereby completely solving the problem that the optical channel of the temperature measuring tube is damaged during use. Contamination problem, to ensure the accuracy of temperature measurement

Method used

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  • Infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and preparation method thereof
  • Infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] ①Making pipe body 1: 45% of 3-5mm plate-shaped corundum particles, 20% of 1-0mm plate-shaped corundum particles, 25% of 200 mesh corundum powder, Gr 2 o 3 Micropowder 2%, A80 alumina cement 3%, a-AL 2 o 3 Micropowder 3%, silicon micropowder 2%, plus 0.2% sodium hexametaphosphate additive, add an appropriate amount of water in the mixer, stir and mix evenly, and use the vibration molding method to make the temperature measuring tube body 1. The lower end of the pipe body 1 is provided with a groove for inlaying the heat conduction block 2 ; the upper end of the pipe body 1 is open for installing the connecting pipe 3 . Two exhaust holes with a diameter of 15 mm are radially arranged on the pipe body 1 at a distance of 250 mm from the upper end for exhausting the cooling gas of the infrared temperature measuring head. After the tube body is demolded, it is baked at 110°C for 24 hours.

[0021] ②Make heat conduction block 2: 35% of graphite, 50% of 0.5-0mm plate-shaped...

Embodiment 2

[0026] ①Making pipe body 1: 45% of 3-5mm plate-shaped corundum particles, 25% of 1-0mm plate-shaped corundum particles, 22% of 200 mesh corundum powder, Gr 2 o 3 Micropowder 1%, A80 alumina cement 2.5%, a-AL 2 o 3 Micropowder 3%, silicon micropowder 1.5%, plus sodium hexametaphosphate additive 0.2%, add appropriate amount of water in the mixer and mix evenly, adopt the vibration molding method to make the temperature measuring tube body 1. The lower end of the pipe body 1 is provided with a groove for inlaying the heat conduction block 2 ; the upper end of the pipe body 1 is open for installing the connecting pipe 3 . Two exhaust holes with a diameter of 15 mm are radially arranged on the pipe body 1 at a distance of 250 mm from the upper end for exhausting the cooling gas of the infrared temperature measuring head. After the tube body is demolded, it is baked at 110°C for 24 hours.

[0027] ②Make heat conduction block 2: 37% of graphite, 50% of 0.5-0mm plate-shaped corund...

Embodiment 3

[0032] ①Making pipe body 1: 40% of 3-5mm plate-shaped corundum particles, 20% of 1-0mm plate-shaped corundum particles, 25% of 200 mesh corundum powder, Gr 2 o 3 Micropowder 2%, A80 alumina cement 5%, a-AL 2 o 3 Micropowder 5%, silicon micropowder 3%, plus 0.2% sodium hexametaphosphate additive, add appropriate amount of water in the mixer, stir and mix evenly, adopt vibration molding method to make temperature measuring tube body 1. The lower end of the pipe body 1 is provided with a groove for inlaying the heat conduction block 2 ; the upper end of the pipe body 1 is open for installing the connecting pipe 3 . Two exhaust holes with a diameter of 15 mm are radially arranged on the pipe body 1 at a distance of 250 mm from the upper end for exhausting the cooling gas of the infrared temperature measuring head. After the tube body is demolded, it is baked at 110°C for 24 hours.

[0033] ②Make heat conduction block 2: 39% of graphite, 50% of 0.5-0mm plate-shaped corundum par...

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Abstract

The invention relates to an infrared temperature measuring pipe for continuously measuring temperature of molten steel and components, and a preparation method thereof. An internal hole of a temperature measuring pipe body is a shoulder hole; a heat conduction block is embedded in a hole with greater diameter at the lower end of the temperature measuring pipe body; a connecting pipe is fixed at the upper end of the temperature measuring pipe body; one part of the connecting pipe is arranged in the temperature measuring pipe body; and the other part of the connecting pipe is arranged outside the temperature measuring pipe. Chrome corundum fireproof casting materials of the pipe body has better thermal shock resistance, excellent slag resistance, stable high-temperature volume and high high-temperature strength; a heat conduction block is made of alumina-carbon and is processed by high temperature, thereby having high thermal conductivity, small thermal capacity and large blackness. Allraw materials used for manufacturing the temperature measuring pipe do not emit smoke gas and volatile during the temperature raising process; therefore, an optical passage of the temperature measuring pipe is always at a clean state, thus thoroughly solving the problem that the optical passage of the existing alumina-carbon based temperature measuring pipe can be polluted by the smoke gas and the volatile easily; and the veracity of the temperature measurement is ensured, and the response speed and the stability are improved.

Description

technical field [0001] The invention relates to an infrared continuous temperature-measuring tube for high-temperature metal melt, in particular to an infrared continuous temperature-measuring tube for continuous casting tundish molten steel. The present invention also relates to the preparation method of the temperature measuring tube Background technique [0002] At present, the infrared optical temperature measuring tube used for continuous temperature measurement of molten steel in continuous casting tundish generally adopts aluminum carbon tube. This kind of aluminum-carbon temperature measuring tube is usually made of corundum and graphite as the main raw materials, adding an appropriate amount of metal aluminum powder and silicon powder as an anti-oxidant, and using phenolic resin as a binder, and adopts isostatic molding. Its manufacturing process is comparatively complicated, and equipment investment is big, and manufacturing cost is high. Especially when this typ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/02
Inventor 王渝斌叶伟罗铃
Owner ANHUI HEPURE CERAMIC
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