CN211679994U

CN211679994U - Anti-erosion submersed nozzle

Info

Publication number: CN211679994U
Application number: CN201922464833.4U
Authority: CN
Inventors: 鲍颢文; 鲍志; 周文春
Original assignee: Jiangsu Oner Refractories Co ltd
Current assignee: Jiangsu Oner Refractories Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-16
Anticipated expiration: 2029-12-31

Abstract

The utility model discloses an immersion nozzle of anti erosion relates to cast steel equipment accessory technical field, for solving when the molten steel pours into, because the beginning of molten steel gets into, the air in the runner can't in time get rid of sometimes, causes the gassing in the molten steel, influences the problem of product quality. The inboard of aluminium carbonaceous casing is provided with the anti scouring layer of aluminium carbon matter, the inside on aluminium carbonaceous casing and the anti scouring layer of aluminium carbon matter is provided with the exhaust duct, the inside on the anti scouring layer of aluminium carbon matter is provided with the runner, the outside of aluminium carbonaceous casing lower extreme is provided with inorganic combination anti erosion slag line.

Description

Anti-erosion submersed nozzle

Technical Field

The utility model relates to a cast steel equipment accessory technical field specifically is an anti immersion nozzle of erosion.

Background

The submerged entry nozzle is a refractory casing for pouring which is installed at the bottom of a tundish in a continuous steel casting plant and is inserted below the steel level of a crystallizer. The main function of the submerged nozzle is to prevent secondary oxidation and molten steel splashing of the pouring of the tundish and avoid the casting powder of the crystallizer from being involved in the molten steel; the flow state and the heat flow distribution of the injection flow in the crystallizer are improved, thereby promoting the uniform growth of the billet shell in the crystallizer and being beneficial to the removal of gas and inclusions in steel. The submerged nozzle has obvious effects on the aspects of improving the quality of casting blanks, improving the labor condition, stabilizing the continuous casting operation, preventing the surface defects of the casting blanks and the like.

In the prior art, the submerged nozzle can realize better anti-erosion effect and long service life

The service life of the submerged nozzle can be improved by 40-60%, for example, the submerged nozzle with the anti-corrosion function disclosed in the publication number of CN205464306U, but when molten steel is poured in, air in a flow passage can not be discharged timely due to the beginning of the molten steel, so that bubbles are generated in the molten steel, and the product quality is affected.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an immersion nozzle of anti erosion to propose when the molten steel is poured into in solving above-mentioned background art, because the beginning of molten steel gets into, the air in the runner can't in time get rid of sometimes, causes the gassing in the molten steel, influences the problem of product quality.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an anti immersion nozzle who corrodes, includes aluminium carbonaceous casing, the inboard of aluminium carbonaceous casing is provided with the anti scouring layer of aluminium carbon matter, the inside on anti scouring layer of aluminium carbonaceous casing and aluminium carbon matter is provided with the air discharge duct, the inside on anti scouring layer of aluminium carbon matter is provided with the runner, the outside of aluminium carbonaceous casing lower extreme is provided with the anti erosion slag line of inorganic combination.

Preferably, the exhaust groove comprises an air inlet straight groove, a corrugated groove and an air outlet straight groove, the air inlet straight groove, the corrugated groove and the air outlet straight groove are communicated, and the drift diameter of the exhaust groove is 0.5 mm.

One end of the air inlet straight groove is communicated with the flow channel, one end of the air outlet straight groove is parallel to the outer surface of the aluminum-carbon shell, and the corrugated groove is corrugated.

Preferably, the aluminum-carbon shell comprises a waterproof layer, an anti-rust layer, a high-temperature melting and burning layer and an aluminum-carbon layer, the waterproof layer is located on the outer surface of the aluminum-carbon shell, the anti-rust layer is arranged inside the waterproof layer, and the high-temperature melting and burning layer is arranged inside the anti-rust layer.

Preferably, an aluminum carbon layer is arranged inside the high-temperature melting and burning layer, and the aluminum carbon layer is located on the inner surface of the aluminum carbon shell.

Preferably, the thickness of the inorganic bonding anti-corrosion slag line is 2-6 mm, and the outer surface of the inorganic bonding anti-corrosion slag line and the outer surface of the aluminum-carbon shell form straight line smooth transition.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the inside air escape of air discharge duct with the runner, simultaneously because the latus rectum of air discharge duct is 0.5mm, the latus rectum is minimum in exhaust air, the molten steel can not flow in the air discharge duct, the radiating heat of molten steel also can pass through the air discharge duct and discharge simultaneously, the entering of air has also been prevented, secondary oxidation has been avoided, the quality has been guaranteed in carminative simultaneously, when the molten steel pours into, because the beginning of molten steel gets into, the air in the runner can't in time get rid of sometimes, cause the gassing in the molten steel, influence the problem of product quality.

2. The utility model discloses a set up the waterproof performance that the waterproof layer increases the device, through the oxidation resistance that the antirust coat improved the device, high temperature melts and burns off layer protection device and does not receive high temperature oxidation, corruption, wearing and tearing, erodees to can insulate against heat, thereby improve device life.

Drawings

FIG. 1 is a schematic view of a prior art submerged entry nozzle;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a partial enlarged view of area A of the present invention;

fig. 4 is a partial enlarged view of the area B of the present invention.

In the figure: 1. an aluminum-carbon shell; 2. an aluminum-carbon anti-scouring layer; 3. an aluminum carbon layer; 4. a flow channel; 5. an exhaust groove; 6. inorganic bonding erosion resistant slag line; 7. a straight air inlet groove; 8. a corrugated groove; 9. an air outlet straight groove; 10. a waterproof layer; 11. a rust-proof layer; 12. melting and burning off the layer at high temperature; 13. an aluminum carbon layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, the present invention provides an embodiment: the utility model provides an anti immersion nozzle that corrodes, including aluminium carbonaceous casing 1, the inboard of aluminium carbonaceous casing 1 is provided with the anti scouring layer 2 of aluminium carbonaceous, the inside of aluminium carbonaceous casing 1 and the anti scouring layer 2 of aluminium carbonaceous is provided with exhaust duct 5, exhaust duct 5 is arranged in discharging the air in runner 4, the inside of the anti scouring layer 2 of aluminium carbonaceous is provided with runner 4, the outside of aluminium carbonaceous casing 1 lower extreme is provided with inorganic combination anti erosion slag line 6, inorganic combination anti erosion slag line 6 can be than the better anti erosion effect of former slag line material, consequently can replace the use of slag line material among the prior art completely, and reduce cost.

Further, the exhaust groove 5 comprises an air inlet straight groove 7, a corrugated groove 8 and an air outlet straight groove 9, the air inlet straight groove 7, the corrugated groove 8 and the air outlet straight groove 9 are communicated, the drift diameter of the exhaust groove 5 is 0.5mm, and when exhaust is guaranteed through arrangement of all structures, inflow of molten steel is effectively prevented.

Further, one end of the air inlet straight groove 7 is communicated with the flow channel 4, one end of the air outlet straight groove 9 is parallel to the outer surface of the aluminum-carbon shell 1, the corrugated groove 8 is corrugated, and air is discharged through the communication of the two ends.

Further, the aluminum-carbon shell 1 comprises a waterproof layer 10, an antirust layer 11, a high-temperature melting and burning-out layer 12 and an aluminum-carbon layer 13, the waterproof layer 10 is located on the outer surface of the aluminum-carbon shell 1, the antirust layer 11 is arranged inside the waterproof layer 10, the high-temperature melting and burning-out layer 12 is arranged inside the antirust layer 11, the high-temperature melting and burning-out layer 12 protects the device from high-temperature oxidation, corrosion, abrasion and scouring and can insulate heat, the service life of the device is prolonged, the waterproof layer 10 is made of ZS-811 high-temperature resistant anticorrosive paint, and the antirust layer 11 is made of ZS-1021 heat resistant antirust paint.

Further, the inside of high temperature melting layer 12 is provided with aluminium carbonaceous layer 3, and aluminium carbonaceous layer 3 is located the internal surface of aluminium carbonaceous casing 1, and aluminium carbonaceous layer 3 has ensured the performance of equipment for heat-resisting material.

Further, the thickness of the inorganic bonding anti-corrosion slag line 6 is 2-6 mm, the outer surface of the inorganic bonding anti-corrosion slag line 6 and the outer surface of the aluminum-carbon shell 1 form straight line smooth transition, and the flatness and the fitting degree of the inorganic bonding anti-corrosion slag line 6 are improved through smooth transition.

The working principle is as follows: when the device is used, molten steel is poured in through the runner 4, air is pushed by the molten steel to be quickly discharged when the molten steel is poured in, but a little residual air enters the zigzag corrugated groove 8 through the air inlet straight groove 7 of the exhaust groove 5 and is discharged through the air outlet straight groove 9, so that air is not doped in the molten steel, the quality of the molten steel is improved, meanwhile, heat generated by heat dissipation of the molten steel can form hot air which is discharged outwards through the exhaust groove 5, external air cannot be conducted, secondary oxidation of the molten steel is avoided, the through diameter of the exhaust groove 5 is extremely small, the molten steel cannot enter, the exhaust groove 5 cannot be blocked, the waterproof performance of the device is improved through the waterproof layer 10, the oxidation resistance of the device is improved through the anti-rust layer 11, and the high-temperature burnout layer 12 protects the device from high-temperature oxidation, corrosion, abrasion and scouring and can insulate heat.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. An erosion resistant submerged entry nozzle comprising an aluminium-carbon housing (1), characterized in that: the aluminum-carbon shell is characterized in that an aluminum-carbon anti-impact brushing layer (2) is arranged on the inner side of the aluminum-carbon shell (1), an exhaust groove (5) is formed in the aluminum-carbon shell (1) and the aluminum-carbon anti-impact brushing layer (2), a flow channel (4) is formed in the aluminum-carbon anti-impact brushing layer (2), and an inorganic combined anti-erosion slag line (6) is arranged on the outer side of the lower end of the aluminum-carbon shell (1).

2. An erosion resistant submerged entry nozzle according to claim 1, characterized in that: the exhaust groove (5) comprises an air inlet straight groove (7), a corrugated groove (8) and an air outlet straight groove (9), the air inlet straight groove (7), the corrugated groove (8) and the air outlet straight groove (9) are communicated, and the drift diameter of the exhaust groove (5) is 0.5 mm.

3. An erosion resistant submerged entry nozzle according to claim 2, characterized in that: one end of the air inlet straight groove (7) is communicated with the flow channel (4), one end of the air outlet straight groove (9) is parallel to the outer surface of the aluminum-carbon shell (1), and the corrugated groove (8) is corrugated.

4. An erosion resistant submerged entry nozzle according to claim 1, characterized in that: the aluminum-carbon shell (1) comprises a waterproof layer (10), an antirust layer (11), a high-temperature melting and burning-out layer (12) and an aluminum-carbon layer (3), wherein the waterproof layer (10) is located on the outer surface of the aluminum-carbon shell (1), the antirust layer (11) is arranged inside the waterproof layer (10), and the high-temperature melting and burning-out layer (12) is arranged inside the antirust layer (11).

5. An erosion resistant submerged entry nozzle according to claim 4, characterized in that: the aluminum carbon layer (3) is arranged inside the high-temperature melting and burning layer (12), and the aluminum carbon layer (3) is located on the inner surface of the aluminum carbon shell (1).

6. An erosion resistant submerged entry nozzle according to claim 1, characterized in that: the thickness of the inorganic bonding anti-corrosion slag line (6) is 2-6 mm, and the outer surface of the inorganic bonding anti-corrosion slag line (6) and the outer surface of the aluminum-carbon shell (1) are in straight line smooth transition.