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Apparatus and method for evaluating clogging degree of submerged nozzle

An evaluation device and immersion technology, which can be used in manufacturing tools, using material absorption and weighing, casting molten material containers, etc., can solve the problems of not being able to obtain the deep blockage of the nozzle, destroying the original appearance of the blockage, etc.

Active Publication Date: 2022-05-20
SHOUGANG CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing technologies include rubbing research on the outlet of the nozzle, but it cannot obtain the deep blockage of the nozzle
The existing technology also includes immersing the nozzle in the liquid to detect the volume change before and after use, but there is a risk of destroying the original appearance of the blockage

Method used

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  • Apparatus and method for evaluating clogging degree of submerged nozzle
  • Apparatus and method for evaluating clogging degree of submerged nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] figure 1 It is a structural schematic diagram of a submerged nozzle clogging degree evaluation device according to an embodiment of the present invention, please refer to figure 1 , an embodiment of the present invention provides a submerged nozzle clogging degree evaluation device, the device includes: a base 1, a fixed bracket 2, a clamp 3, a baffle 4, and filling particles 5.

[0032] The base 1 is used to support the nozzle 6, and the nozzle 6 is placed on the base 1; the fixed bracket 2 is arranged on the base 1 and is perpendicular to the plane where the base 1 is located; one end of the clamp 3 is connected to the The fixed bracket 2 is connected, and the other end is connected with the nozzle 6 for fixing the nozzle 6, wherein the clamp 3 includes: a first clamp, one end of the first clamp is connected to the upper part of the fixed bracket 2 connection, the other end is connected with the upper part of the nozzle 6; the second clamp, one end of the second clam...

Embodiment 2

[0041] A method for evaluating the clogging degree of a submerged nozzle according to an embodiment of the present invention is applied to the device described in Embodiment 1, please refer to figure 2 , the method includes:

[0042] Step 1: Take the unused nozzle 6, clamp the nozzle 6 with the clamp 3, and keep it perpendicular to the base 1;

[0043] Step 2: using the baffle plate 4 to block the outlet of the nozzle 6;

[0044] Step 3: adding filling particles 5 with known density to the nozzle 6 to fill the nozzle 6;

[0045] Step 4: Take out the filling particles 5 from the nozzle 6, and weigh its weight as the first weight;

[0046] Step 5: Take the used nozzle 6, cool it to room temperature, repeat steps 1-4, and weigh the second weight of the filled particles 5, and calculate the volume of the nozzle blockage by the formula V=(W1-W2) / ρ , where W1 is the first weight, W2 is the second weight, ρ is the density of the filling particles, and V is the volume of the nozzl...

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Abstract

The invention provides a device and method for evaluating the clogging degree of an immersed nozzle, comprising: a base, a fixed bracket, a fixture, a baffle, and filling particles, the base is used to support the nozzle, and the nozzle is placed on the base; the fixed bracket is arranged on the base, It is perpendicular to the plane where the base is located; one end of the clamp is connected to the fixed bracket, and the other end is connected to the nozzle for fixing the nozzle; the baffle is connected to the clamp at the lower part of the nozzle to block the outlet of the nozzle; the filling particles are filled in the nozzle, And the particle size is less than 3mm. It solves the technical problem in the prior art that it is impossible to quickly determine the blockage degree of the water port without destroying the blockage of the water port. On the basis of not destroying the blockage of the nozzle, the degree of blockage of the nozzle is accurately calculated, and the volume of the blockage of the nozzle is used to correspond to the previous steelmaking process to optimize the steelmaking process, which is helpful to understand the cause of the blockage of the nozzle, and more It is better to control the steelmaking process to eliminate the technical effect of nozzle blockage.

Description

technical field [0001] The invention relates to the technical field of continuous casting, in particular to a device and method for evaluating the clogging degree of a submerged nozzle. Background technique [0002] In the continuous casting process, the submerged nozzle is a refractory sleeve connecting the tundish and the mold, and its role is extremely critical. When continuously casting aluminum-containing steel grades, alumina inclusions easily adhere to the inner wall of the submerged nozzle, forming nozzle blockages. The hazards are: (1) affecting continuous casting and increasing production costs; (2) the hazard of nozzle blockage falling off Rolled plate surface quality. Quantitative evaluation of nozzle clogging is helpful to understand the cause of nozzle clogging, and better control the steelmaking process to eliminate the occurrence of nozzle clogging. [0003] Existing technology includes the rubbing method research on the outlet of the nozzle, but it cannot ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N5/02B22D41/50
CPCG01N5/02B22D41/50
Inventor 邓小旋刘柏松李海波朱国森吕迺冰潘宏伟季晨曦邵肖静张宏艳尹娜刘国梁马文俊
Owner SHOUGANG CORPORATION