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Detection method for viscosity of continuous-casting casting slag

A technology of continuous casting casting and detection method, which is applied in the detection of continuous casting casting slag viscosity and detection field of casting slag viscosity. , low labor intensity, and the effect of narrowing the fluctuation range

Inactive Publication Date: 2017-06-23
SHANGHAI MEISHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for detecting the viscosity of continuous casting slag, which mainly solves the technical problem that the existing continuous casting slag viscosity cannot be accurately measured

Method used

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  • Detection method for viscosity of continuous-casting casting slag
  • Detection method for viscosity of continuous-casting casting slag
  • Detection method for viscosity of continuous-casting casting slag

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with embodiment. In the embodiment, the casting slag whose origin is Henan and whose number is BA019-14 / M1001 is selected. The main chemical components of the casting slag are shown in Table 1.

[0019] Table 1 Chemical composition of pouring slag in the embodiment of the present invention, unit: weight percent

[0020]

[0021] A method for detecting the viscosity of continuous casting slag, comprising the following steps:

[0022] 1) Use dimethyl silicone oil as the standard liquid to calibrate the instrument constant K value of the model ND-II slag viscometer at 20°C;

[0023] 2) Put 150g of decarburized and continuous casting slag into the graphite crucible with an inner diameter of 40mm, put the graphite sleeve and graphite crucible into the slag viscometer, raise it to 1300°C, and keep it at this temperature for 30min;

[0024] 3) Drop the Φ14×22mm high-purity metal molybdenum probe from the...

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Abstract

The invention relates to a detection method for the viscosity of continuous-casting casting slag, mainly aiming at solving the technical problem that the viscosity of existing continuous-casting casting slag cannot be accurately measured. The method provided by the invention comprises the following steps: 1) filling 140g to 160g of carbon-removed continuous-casting casting slag into a graphite crucible; putting a graphite sleeve and the graphite crucible into a furnace slag viscometer; raising temperature to 1300 DEG C to 1340 DEG C and keeping the heat for 20min to 30min; 2) enabling a high-purity metal molybdenum measuring head with the size of phi14*22mm to fall off from the upper part of the furnace slag viscometer, and staying for 3min to 4min when the molybdenum measuring head falls to the upper side of dreg liquid; inserting the molybdenum measuring head into molten slag, wherein the distance between the end part of the molybdenum measuring head to the bottom of the crucible is more than or equal to 15mm; starting to measure a zero point; 3) rotating the molybdenum measuring head and starting to detect and recording the viscosity of the casting slag; 4) taking an average value of data, which is continuously detected and recorded under the same temperature of the same casting slag test sample and is no less than 10, as the viscosity of the casting slag under specified temperature. By adopting the detection method, accurate determination of the viscosity of the continuous-casting casting slag is realized.

Description

technical field [0001] The invention relates to a method for detecting the viscosity of casting slag, in particular to a method for detecting the viscosity of continuous casting slag, and belongs to the technical field of detection of auxiliary materials for steelmaking and continuous casting. Background technique [0002] Continuous casting casting slag is one of the indispensable auxiliary materials in the continuous casting process of molten steel. It is usually a powder-mixed slag powder with exothermic components and easy to crust. After casting or changing the tundish, pour the casting slag into the molten steel of the crystallizer. On the surface, relying on the continuous casting casting slag to burn and heat itself, the molten mold slag is quickly formed, which plays an important role in lubricating the casting slab and continuous casting demoulding. [0003] The physical properties of the continuous casting slag are related to whether the molten steel can be poured...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N11/14
CPCG01N11/14
Inventor 刘为王鑫艳孙晓辉王海军
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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