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Thickness measuring device and measuring method for liquid slag layer of continuous casting crystallizer

A continuous casting crystallizer and liquid slag layer technology, which is applied in the field of iron and steel metallurgy, can solve the problems of inconsistent artificial insertion depth, measurement result error, and unfixed insertion time, so as to overcome the uneven insertion depth, improve the process, and enhance the casting The effect of billet quality

Pending Publication Date: 2019-12-27
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no completely unified method in the industry at present. Many companies use iron wire or steel wire measurement or double-wire method for measurement. There are disadvantages such as manual insertion depth is not uniform each time, insertion time is not fixed, and double-wire method measurement is entangled. The result error is relatively large

Method used

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  • Thickness measuring device and measuring method for liquid slag layer of continuous casting crystallizer
  • Thickness measuring device and measuring method for liquid slag layer of continuous casting crystallizer
  • Thickness measuring device and measuring method for liquid slag layer of continuous casting crystallizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 (applicable to the large-size preform with electromagnetic stirring)

[0033] like Figure 1 to Figure 3 As shown, the continuous casting mold liquid slag layer thickness measuring device includes:

[0034] A measuring tube 1, the measuring tube 1 is a hollow structure, the measuring tube 1 is a copper tube, the base plate 3 is a copper plate, and the diameter of the measuring tube 1 is 20mm, and the length is 400mm, and the measuring tube 1 The upper end is curved for easy handling.

[0035] A base plate 3, which is connected to one end of the measuring tube 1, and the base plate 3 is provided with a measuring hole 8 communicating with the measuring tube 1; the size of the base plate 3 is 60mm×60mm×5mm, and The diameter of the measuring hole 8 is 3 mm.

[0036] A measuring wire 2, the measuring wire 2 runs through the measuring hole 8 and the measuring tube 1, and one end thereof is fixed by the end of the measuring tube 1, and the other end can pass th...

Embodiment 2

[0040] Embodiment 2 (suitable for large-size slab type)

[0041] like Figure 1 to Figure 3 As shown, the continuous casting mold liquid slag layer thickness measuring device includes:

[0042] Measuring tube 1, the measuring tube 1 is a hollow structure, the measuring tube 1 is a steel pipe, the bottom plate 3 is a steel plate, and the diameter of the measuring tube 1 is 20 mm, the length is 400 mm, and the upper end of the measuring tube 1 Curved for easy grip.

[0043] A base plate 3, which is connected to one end of the measuring tube 1, and the base plate 3 is provided with a measuring hole 8 communicating with the measuring tube 1; the size of the base plate 3 is 60mm×60mm×5mm, and The diameter of the measuring hole 8 is 3 mm.

[0044] A measuring wire 2, the measuring wire 2 runs through the measuring hole 8 and the measuring tube 1, and one end thereof is fixed by the end of the measuring tube 1, and the other end can pass through the powder slag layer 4, the transiti...

Embodiment 3

[0048] Embodiment 3 (suitable for large-size special-shaped blanks)

[0049] like Figure 1 to Figure 3 As shown, the continuous casting mold liquid slag layer thickness measuring device includes:

[0050] Measuring tube 1, the measuring tube 1 is a hollow structure, the measuring tube 1 is a steel pipe, the bottom plate 3 is a steel plate, and the diameter of the measuring tube 1 is 20 mm, the length is 400 mm, and the upper end of the measuring tube 1 Curved for easy grip.

[0051] A base plate 3, which is connected to one end of the measuring tube 1, and the base plate 3 is provided with a measuring hole 8 communicating with the measuring tube 1; the size of the base plate 3 is 60mm×60mm×5mm, and The diameter of the measuring hole 8 is 3 mm.

[0052] A measuring wire 2, the measuring wire 2 runs through the measuring hole 8 and the measuring tube 1, and one end thereof is fixed by the end of the measuring tube 1, and the other end can pass through the powder slag layer 4...

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Abstract

The invention discloses a thickness measuring device and measuring method for a liquid slag layer of a continuous casting crystallizer, and belongs to the technical field of steel metallurgy industry.The thickness measuring device for the liquid slag layer of the continuous casting crystallizer comprises a measuring tube, a bottom plate and a measuring wire; the measuring tube is of a hollow structure; the bottom plate is connected with one end of the measuring tube, and a measuring hole communicating with the measuring tube is formed in the bottom plate; and the measuring wire penetrates through the measuring hole and the measuring tube, one end of the measuring wire is fixed by the end portion of the measuring tube, and the other end of the measuring wire can penetrate through a powderslag layer, a transition layer and the liquid slag layer to extend into molten steel. According to the device, the thickness of protective slag liquid slag layers of crystallizers of multiple blank types can be quickly and accurately measured, and a basis can be provided for the improvement of the process and the selection of the proper protective slag by continuous casting technical personnel andfor the improvement of the quality of a casting blank.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy industry, and in particular relates to a device and a method for measuring the thickness of a liquid slag layer of a continuous casting crystallizer. Background technique [0002] In the continuous casting process, the mold powder has an important impact on the quality of the casting slab and the output of the continuous casting machine. It can play a role in heat insulation and heat preservation to prevent the surface of the molten steel in the mold from freezing the steel, and to isolate the air to prevent secondary oxidation and absorption of the molten steel. Liquid inclusions, lubricating mold walls and slabs, filling air gaps to improve heat transfer, etc. There are three main layers of mold flux in the mold: powder slag layer, transition layer and liquid slag layer. The thickness of the liquid slag layer has a great influence on the quality of the billet, and it is an impo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D2/00B22D11/111B22D11/18
CPCB22D2/001B22D11/111B22D11/181
Inventor 杨改彦朱学理朱立光王杏娟李丽丽马艳杰
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY