Internal slag heat current inspector and inspection for continuously-casting crystallizer

A continuous casting crystallizer and heat flow detection technology, applied in the direction of material heat development, material thermal conductivity, etc., can solve the problems of unreliability and error, and achieve the effect of convenient operation, low equipment investment and maintenance costs, and good reproducibility

Inactive Publication Date: 2007-04-04
CHONGQING UNIV
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  • Abstract
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Problems solved by technology

Using the obtained results to indirectly measure the heat transfer performance of mold flux will inevitably lead to large errors and untrue results

Method used

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  • Internal slag heat current inspector and inspection for continuously-casting crystallizer
  • Internal slag heat current inspector and inspection for continuously-casting crystallizer
  • Internal slag heat current inspector and inspection for continuously-casting crystallizer

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Experimental program
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Embodiment Construction

[0026] As in Fig. 1, the operating steps of the testing method of the present invention are:

[0027] 1. Mold flux sample preparation: Mold flux samples are prepared or prepared. The mold flux samples of the present invention can be formulas in the prior art, and there are certain differences in performance between mold flux samples of different formulas;

[0028] 2. Start the furnace body heating system to heat the furnace body and hearth;

[0029] 3. Add a molded slag sample with a set weight into the furnace body through a graphite crucible; usually put the slag sample when the furnace temperature reaches 1250°C-1350°C, and the weight added to the test device of the present invention is 250g-500g, usually 300g; for furnaces with different volumes, the weight of mold slag samples added is different, and the amount to be added is mainly determined according to its volume;

[0030] 4. When the furnace temperature reaches the set temperature, keep it warm for a period of time;...

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Abstract

A method for detecting heat flow of slag diaphragm in continuous casting crystallizer includes adding 250g-500g slag sample when furnace temperature is at 1250-1350deg.c and holding temperature for 5-10min when furnace temperature is on 1400deg.c, obtaining temperature-time relation curve by measuring temperature variation of cooling water passing through metal probe to know density variation state of heat flow passing through slag diaphragm at different time. The device used for realizing said method is also disclosed.

Description

Technical field: [0001] The invention relates to a heat flow detection method and device for mold slag in a continuous casting steel crystallizer, which is suitable for detecting the heat transfer characteristics of the mold slag film in the continuous casting steel crystallizer. Background technique: [0002] In the process of continuous steel casting, although the mold powder consumption is small, generally 0.4 to 0.8 kg per ton of steel, the metallurgical function in the mold is very prominent, and it should have heat insulation and heat preservation, prevent secondary oxidation of molten steel, absorb The role of floating inclusions in molten steel, lubricating the slab and controlling heat transfer is of great significance to stabilizing the continuous casting process, expanding the variety of continuous casting, and improving the quality and output of the slab. Although mold slag has been used in continuous casting molds for decades, there is still no accurate quantita...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/20G01N25/18
Inventor 文光华唐萍祝明妹漆鑫
Owner CHONGQING UNIV
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