CN202062057U

CN202062057U - Argon protecting device used for steel ingot pouring

Info

Publication number: CN202062057U
Application number: CN2011200002117U
Authority: CN
Inventors: 王平安; 李凯
Original assignee: Maanshan Iron and Steel Co Ltd
Current assignee: Maanshan Iron and Steel Co Ltd
Priority date: 2011-01-04
Filing date: 2011-01-04
Publication date: 2011-12-07
Anticipated expiration: 2021-01-04

Abstract

The utility model discloses an argon protecting device used for steel ingot pouring, which comprises circular steel pipe rings, an argon guiding-in pipe, inner flow guiding plates, outer flow guiding plates and air flow reflecting plates; the circular steel pipe rings are fixed below a slag stopping plate of a water gap mechanism, and water gaps run through the circular steel pipe rings; the outer walls of the circular steel pipe rings are connected with the argon guiding-in pipe, the lower surface of the argon guiding-in pipe is provided with a plurality of air vents, the inner flow guiding plates and the outer flow guiding plates are respectively welded at the inner sides and the outer sides of the openings of the air vents, and the inner flow guiding plates and the outer flow guiding plates are circular plates; the clearance between each of the inner flow guiding plates and each of the outer flow guiding plates extends downward with the plates and gradually becomes narrow; and the air flow reflecting plates are fixed on middle injection pipes below the water gaps, and funnel-shaped bricks penetrate through the air flow reflecting plates. In the steel ingot pouring process, the argon is blown in by the argon guiding-in pipe and is blown out from the air vents on the circular steel pipe rings and the clearance between each of the inner flow guiding plates and each of the outer flow guiding plates, so as to form strong air flow circular screens between each of the water gaps and each of the reflecting plates, therefore, a sealed vacuum environment is formed, large amount of air absorption and secondary oxidation of liquid steel can be prevented, the purity of the liquid steel is ensured, and the quality of a steel ingot is improved.

Description

The ingot steel casting argon protective device

Technical field

The utility model relates to the protective device that uses in the ingot steel casting process, relate in particular to a kind of argon protective device.

Background technology

In the ingot steel casting process, steel stream exposes for a long time in air, as not taking safeguard measure; be accompanied by air-breathingly in a large number, can make steel ingot internal gas content increase, will cause secondary oxidation of steel; and then the increase of steel ingot endogenous inclusion, influenced steel ingot degree of purity and inherent quality.

The utility model content

Technical problem to be solved in the utility model provides a kind of argon protective device, prevents the air-breathing and secondary oxidation of steel stream in the casting process, thereby guarantees the molten steel clarity, improves ingot quality.

The utility model ingot steel casting argon protective device is characterized in that: it comprises annular steel pipe circle, argon gas ingress pipe, inside and outside deflector, air-flow reflecting plate; Annular steel pipe circle be fixed on mouth of a river mechanism slag trap below, the mouth of a river is therefrom passed; Connect the argon gas ingress pipe on the outer wall of annular steel pipe circle, be processed with several passages on its lower surface, be welded with inside and outside deflector respectively in the inside and outside both sides in passage aperture, both are annular slab; Gap between the inside and outside deflector is extended downwards along with plate and is diminished gradually; The air-flow reflecting plate is fixed on the feed trumpet of below, the mouth of a river, and the infundibulate brick therefrom passes.

In the ingot steel casting process, be blown into argon gas by the argon gas ingress pipe, the passage of argon gas from the annular steel pipe circle, the gap between the inside and outside deflector blow out.Because the gap between the inside and outside deflector is extended downwards along with plate and is diminished gradually, therefore argon gas stream clearance aperture from inside and outside deflector lower end after quicken in the gap of coming out from passage blows out, the argon gas that blows out forms air blast ring curtain between the mouth of a river and reflecting plate at a high speed, form the vacuum environment of seal, reached the purpose of secluding air, prevent a large amount of air-breathing and secondary oxidation of molten steel, guaranteed the molten steel degree of purity, improved ingot quality.

Description of drawings

Fig. 1 is the assembling schematic diagram of the utility model device;

Fig. 2 is the vertical view of the utility model device.

The specific embodiment

From Fig. 1 and Fig. 2 as can be known, the utility model ingot steel casting argon protective device is characterized in that: it comprise annular steel pipe circle 2, argon gas ingress pipe 1, inside and outside deflector 4,4 ', air-flow reflecting plate 5; Annular steel pipe circle 2 be fixed on mouth of a river mechanism 7 slag trap 6 below, the mouth of a river 8 is therefrom passed; Connect argon gas ingress pipe 1 on the outer wall of annular steel pipe circle 2, be processed with several passages 3 on its lower surface,

deflector

4,4 inside and outside being welded with respectively in the inside and outside both sides in passage 3 apertures ', both are annular slab; Inside and outside deflector 4,4 ' between the gap extend downwards along with plate and diminish gradually; Air-flow reflecting plate 5 is fixed on the feed trumpet 9 of 8 belows, the mouth of a river, and infundibulate brick 10 therefrom passes.

Wherein, the cross sectional shape of annular steel pipe circle 2 can be the figure of sealing such as circular, square.For argon gas is sprayed more equably, passage 3 is distributed on the lower surface of annular steel pipe circle 2.

During assembling, with annular steel pipe circle 2 pass the mouth of a river 8 make its slag trap that is fixed on mouth of a river mechanism 76 below, air-flow reflecting plate 5 is passed infundibulate brick 10 makes on its feed trumpet 9 that is fixed on 8 belows, the mouth of a river.When steel ingot begins to pour into a mould, open the tunger tube that is connected with argon gas ingress pipe 1 by snap joint, make the passage 3 of argon gas from the annular steel pipe circle 2, inside and outside deflector 4,4 ' between the gap blow out downwards, the argon gas that blows out forms air blast ring curtain between the mouth of a river 8 and feed trumpet 9 after 5 reflections of air-flow reflecting plate at a high speed, form the vacuum environment of seal, reached the purpose of secluding air, prevent the secondary oxidation of molten steel and air-breathing in a large number, guarantee the molten steel degree of purity, improved ingot quality.

Claims

1. ingot steel casting argon protective device, it is characterized in that: it comprises annular steel pipe circle (2), argon gas ingress pipe (1), inside and outside deflector (4,4 '), air-flow reflecting plate (5); The annular steel pipe circle (2) be fixed on mouth of a river mechanism (7) slag trap (6) below, the mouth of a river (8) are therefrom passed; Connect argon gas ingress pipe (1) on the outer wall of annular steel pipe circle (2), be processed with several passages (3) on its lower surface, be welded with inside and outside deflector (4,4 ') respectively in the inside and outside both sides in passage (3) aperture, both are annular slab; Gap between the inside and outside deflector (4,4 ') is extended downwards along with plate and is diminished gradually; Air-flow reflecting plate (5) is fixed on the feed trumpet (9) of below, the mouth of a river (8), and infundibulate brick (10) therefrom passes.

2. argon protective device according to claim 1 is characterized in that: the cross sectional shape of annular steel pipe circle (2) can be a figure circular, square sealing.

3. argon protective device according to claim 1 is characterized in that: passage (3) is distributed on the lower surface of annular steel pipe circle (2).