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Method and device for mensurating speed of melting protecting slag

A technology of melting speed and mold flux, which is applied in the field of measuring the melting speed of mold flux, can solve the problems of complex structure of the test device, small audience area, large sample size, etc., and achieve strong maintainability of equipment, wide application range, and convenient operation Effect

Inactive Publication Date: 2007-07-25
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

[0008] The advantage of this method is that it will not destroy the original state of the mold powder, but the structure of the test device is complicated, the sample size is large, and the refractory materials such as the heat conduction plate and the slag baffle in the device are easily melted at a high temperature of 1500 °C. Slag erosion, slag hole, slag overflow hole will also be corroded and deformed, so this method has a small audience and is not suitable for routine testing

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  • Method and device for mensurating speed of melting protecting slag

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[0032] As shown in Figure 1, it is a schematic structural diagram of a device for measuring the melting rate of mold flux provided by the present invention, which includes a heating device and a measuring device;

[0033] The heating device includes a porcelain boat 1 for loading mold flux samples 2, that is, a crucible and a high-temperature furnace;

[0034] Described porcelain boat 1 is placed in the high-temperature furnace, and it is made of alumina;

[0035] The inner wall of the high-temperature furnace is provided with a hearth brick 4, which is made of high-temperature refractory materials, and the outside of the hearth brick 4 is uniformly provided with a heating element 3, which provides a heat source for the high-temperature furnace and controls the heating and constant temperature operation of the high-temperature furnace;

[0036] The measuring device comprises a metal wire 5 connected in sequence, a resistance measuring instrument 7 and a computer 8;

[0037] T...

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Abstract

A method for determining a melting speed of protective slag includes obtaining time from electrode being inserted into insulator to holding resistance value of protective slag to be constant by measuring resistance value in melting course of protective slag then using obtained time as melting speed of protective slag. The device used for realizing said method is also disclosed.

Description

technical field [0001] The invention relates to a method and a device for measuring the melting speed of mold slag. Background technique [0002] During the production process, the mold slag is added to the molten steel surface of the continuous casting mold. Since the melting point of the mold slag is much lower than the temperature of the molten steel, the mold slag is continuously melted and flows into the casting mold along with the burning of the carbon material in the mold slag. The gap between the slab and the crystallizer is taken away by the slab, and the reasonable matching of the melting and consumption of the mold slag is very important for the continuous casting production and the quality of the slab, so the melting speed of the continuous casting mold slag is very important for the mold slag physical properties. [0003] At present, the following methods are used to measure the melting rate of mold flux: [0004] 1. Porcelain boat method: put different mold s...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/06G01N25/04G01N33/38
Inventor 朱祖民蔡得祥张晨庄铁
Owner BAOSHAN IRON & STEEL CO LTD
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