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Gun insertion type stopper rod device and method using same for absorbing inclusions at gate

A technology of inclusions and stoppers, which is applied in the manufacture and application of stoppers for continuous casting, to achieve stable pouring, scientific structural design, and reduced nodulation probability

Active Publication Date: 2015-01-07
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the invention of the present invention is to address many deficiencies in the prior art. One is to provide a gun-type stopper device; The adsorption gun absorbs and fixes the inclusions flowing through the nozzle in time to solve the problem of nodules at the nozzle and improve the cleanliness of molten steel

Method used

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  • Gun insertion type stopper rod device and method using same for absorbing inclusions at gate
  • Gun insertion type stopper rod device and method using same for absorbing inclusions at gate
  • Gun insertion type stopper rod device and method using same for absorbing inclusions at gate

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Embodiment 1 Single-section gun-type stopper device

[0048] The gun-type stopper device of this embodiment sees image 3 , this gun-type stopper device is suitable for the situation where there are few inclusions in molten steel and no need to change the gun. The adsorption gun 1 is a single-section type, the length of the gun body is 1900mm, and the diameter is 25mm. The length of the gun head is 250mm. There are a large number of concave holes 10 on the surface, and the function of the concave holes 10 is to absorb a large number of inclusions. The gun body is made of ordinary aluminum-carbon refractory material, the gun head is made of special refractory material, and the matrix is ​​aluminum-carbon, and the outer surface of the gun head is provided with a coating layer of special refractory material. The material is calcium oxide.

[0049] Method of Adsorbing Inclusions at the Water Outlet Using a Single-section Gun Type Stopper Device

[0050] Before pouring th...

Embodiment 3

[0051] Example 3 Multi-section gun-type stopper device

[0052] See figure 2 In this embodiment, a gun-type stopper is produced, which is suitable for the situation where there are many inclusions in molten steel and the gun needs to be changed. The adsorption gun 1 is a multi-section structure with a length of 2000 mm and a diameter of 25 mm. The section length is 400mm, each section head has thread 11, and the outer surface of the adsorption gun is provided with a large number of concave holes 10, which are used to absorb a large number of inclusions. The substrate of the adsorption gun 1 is aluminum-carbon, and the outer surface is coated with a special refractory material, the thickness is 4mm, and the material is calcium oxide and magnesium oxide.

[0053] Method of Adsorbing Inclusions at the Water Outlet Using the Multi-Segment Gun Type Stopper Device

[0054] Before the tundish located above the crystallizer 9 is poured, connect the multi-section adsorption gun 1 th...

Embodiment 5

[0055] Example 5 Convex single-section gun-type stopper device

[0056] A single-section gun-type stopper was produced, which is suitable for the situation where there are few inclusions in molten steel and no need to change the gun. The adsorption gun 1 is a single-section type, with a length of 1900mm and a diameter of 25mm, of which the length of the gun head is 250mm. The tip of the gun has a large number of ribs, which can absorb a large number of inclusions. The refractory material of the gun body is ordinary aluminum-carbon, and the gun head is a special refractory material, in which the substrate is aluminum-zirconium-carbon, and the outer surface is coated with a special refractory material, the thickness is 4mm, and the material is calcium oxide.

[0057] Method of Adsorbing Inclusions at the Water Outlet Using a Convex Single-section Gun-type Stopper Rod

[0058] Before pouring the tundish 7 located above the crystallizer 9, fix the adsorption gun 1 on the horizont...

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Abstract

The invention provides a gun insertion type stopper rod device and a method using the same for absorbing inclusions at a gate. The device mainly comprises an absorption gun, a hollow stopper rod, a hot argon blowing device, horizontal clamps and a vertical lifting frame, the absorption gun is of a hollow bamboo-shaped structure and inserted into the hollow stopper rod of a long cylindrical structure, the upper end of the hollow stopper rod is fixed by the corresponding horizontal clamp, one end of the hot argon blowing device is connected on an external hot argon pipeline while the other end of the hot argon blowing device is inserted into a hollow pipe at the top of the hollow stopper rod, one end of the stopper rod horizontal clamp is connected with the vertical lifting frame while the other end thereof is mutually clamped with the hollow stopper rod, and one end of the absorption gun horizontal clamp is connected with the vertical lifting frame while the other end thereof is mutually clamped with the absorption gun. The method using the device for absorbing the inclusions at the gate includes the steps of gun insertion, argon sealing, gun descending, absorption and gun replacement. The device is scientific in structural design, part of time for gate changing is saved, smooth pouring of continuous casting is benefitted by using the device for absorbing sundries, molten steel cleanliness is improved, and gate nodulation probability is decreased.

Description

technical field [0001] The invention relates to the field of manufacture and application of stopper rods for continuous casting, in particular to a plunger [0002] A stopper rod device and a method for absorbing inclusions at the nozzle by using it. It is especially suitable for casting aluminum-killed steel, aluminum-containing steel, titanium-containing steel and rare earth steel in iron and steel plants, which are prone to nozzle nodulation. Background technique [0003] Continuous casting is an important process in the metallurgical production process. As an important refractory nozzle connecting the tundish and the crystallizer, it is called the "neck" of continuous casting. In the process of continuous casting in iron and steel plants, nodules often appear in the tundish nozzle and submerged nozzle and cause nozzle blockage, which affects the pouring and billet quality of continuous casting. With the improvement of the continuous casting process and the development ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/16B22D11/10
Inventor 赵定国王书桓崔小杰黄凯刘吉猛李伟峰
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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