阅读说明：本技术 一种叠层连接阶梯防穿钢上水口 (Laminated connection ladder steel penetration-preventing water feeding port ) 是由 高桂航 周九喜 张美杰 钱晓飞 高桂显 于 2020-06-13 设计创作，主要内容包括：本发明公开了一种叠层连接阶梯防穿钢上水口,包括本体(1)、氧化锆内衬(2)、过渡料(3)、氧化锆碗口(4)、钢水流道(5)、镶料(6),所述氧化锆内衬(2)与本体(1)通过过渡料(3)进行连接,所述氧化锆碗口(4)及本体(1)设有叠层连接阶梯(7),所述氧化锆碗口(4)及本体(1)通过位于叠层连接阶梯(7)上的镶料(6)进行拼接及密封。本发明在氧化锆碗口位置采用氧化锆与本体的叠层连接阶梯进行拼接,使二者的拼接处形成叠层结构,加固了氧化锆碗口与本体拼接处的强度,避免了连接缝隙,避免了穿钢事故的发生进一步延长上水口的使用寿命,其使用寿命是现有技术上水口使用寿命的两倍。(The invention discloses a laminated connection ladder steel penetration prevention water feeding port, which comprises a body (1), a zirconia lining (2), a transition material (3), a zirconia bowl opening (4), a molten steel runner (5) and an insert material (6), wherein the zirconia lining (2) is connected with the body (1) through the transition material (3), the zirconia bowl opening (4) and the body (1) are provided with laminated connection ladders (7), and the zirconia bowl opening (4) and the body (1) are spliced and sealed through the insert material (6) positioned on the laminated connection ladders (7). According to the invention, the zirconia and the body are spliced by adopting the laminated connecting step of the zirconia and the body at the position of the zirconia bowl mouth, so that the spliced position of the zirconia bowl mouth and the body forms a laminated structure, the strength of the spliced position of the zirconia bowl mouth and the body is reinforced, a connecting gap is avoided, the steel penetration accident is avoided, the service life of the water feeding port is further prolonged, and the service life of the water feeding port is twice as long as that of the water feeding port in the prior art.)

1. The utility model provides a mouth of a river on steel is prevented wearing by stromatolite connection ladder which characterized in that: including body (1), zirconia inside lining (2), transition material (3), zirconia bowl mouth (4), molten steel runner (5), inlay material (6), zirconia inside lining (2) are connected through transition material (3) with body (1), zirconia bowl mouth (4) and body (1) are equipped with stromatolite and connect ladder (7), material (6) are inlayed through being located stromatolite connection ladder (7) to zirconia bowl mouth (4) and body (1) and splice and seal.

2. The laminated connection step penetration-preventing steel nozzle of claim 1, wherein: the zirconia bowl mouth (4) is in a funnel shape, and the diameter of the upper bowl mouth is larger than that of the lower bowl mouth.

3. The laminated connection step penetration-preventing steel nozzle of claim 1, wherein: the thickness of the zirconia lining (2) is 0.3 to 0.4 times of the thickness of the body (1).

4. The laminated connection step penetration-preventing steel nozzle of claim 1, wherein: the apparent porosity of the body (1) is more than or equal to 22 percent, and the volume density is more than or equal to 2.4 g/cc.

5. The laminated connection step penetration-preventing steel nozzle of claim 1, wherein: the zirconia lining (2) and the zirconia bowl mouth (4) are made of zirconia materials, the apparent porosity is less than or equal to 18 percent, and the volume density is more than or equal to 5.1 g/cc.

6. The laminated connection step penetration-preventing steel nozzle of claim 1, wherein: the body (1) is made of an aluminum-zirconium-carbon material.

7. The laminated connection step penetration-preventing steel nozzle of claim 1, wherein: the transition material (3) is made of a mixed material of zirconia and aluminum, zirconium and carbon, the apparent porosity is less than or equal to 18%, and the volume density is more than or equal to 4.9 g/cc.

Technical Field

The invention relates to the technical field of refractory material continuous casting water feeding ports, in particular to a laminated connection stepped penetration-preventing steel water feeding port.

Background

The water feeding port is an important part in the production process of continuous casting steel and is arranged at the bottom of a tundish. The upper nozzle is contacted with molten steel with the temperature of more than 1500 ℃ for a long time, and the quality of the upper nozzle needs to be ensured. The upper nozzle is disturbed by the static pressure of the high-temperature molten steel, the jacking force of the upper nozzle to the upper nozzle from bottom to top and the high-speed flow of the high-temperature and high-specific gravity molten steel. In the water feeding port in the prior art, a connecting seam between a zirconia bowl opening and a body connecting part is not tight, and molten steel is easy to seep and leak, so that a steel penetrating accident is caused, the service life of the water feeding port is shortened, and the safety production is influenced.

The laminated connection ladder penetration-resistant steel feeding port has excellent penetration-resistant steel performance and thermal shock stability. The service life of the water feeding nozzle is twice of that of the water feeding nozzle in the prior art. Greatly saves the production cost, reduces the labor intensity and meets the production requirement of continuous casting steel.

Disclosure of Invention

The invention aims to overcome the technical problems that in the water feeding port in the prior art, because a connecting seam between a zirconia bowl opening and a body connecting part is not tight, molten steel is easy to leak and leak, so that a steel penetration accident is caused, the service life of the water feeding port is shortened, and the safety production is influenced.

In order to achieve the purpose, the invention adopts the technical scheme that: including body 1, zirconia inside lining 2, transition material 3, zirconia bowl mouth 4, molten steel runner 5, inlay material 6, zirconia inside lining 2 is connected through transition material 3 with body 1, zirconia bowl mouth 4 and body 1 are equipped with the stromatolite and connect ladder 7, zirconia bowl mouth 4 and body 1 are connected the material 6 of inlaying on ladder 7 through being located the stromatolite and are spliced and sealed.

Preferably, the zirconia bowl mouth 4 is funnel-shaped, and the diameter of the upper bowl mouth is larger than that of the lower bowl mouth.

Preferably, the thickness of the zirconia lining 2 is 0.3 to 0.4 times the thickness of the body 1.

Preferably, the apparent porosity of the body 1 is more than or equal to 22 percent, and the volume density is more than or equal to 2.4 g/cubic centimeter.

Preferably, the zirconia lining 2 and the zirconia bowl mouth 4 are both made of zirconia materials, the apparent porosity is less than or equal to 18%, and the volume density is more than or equal to 5.1 g/cc.

Preferably, the body 1 is made of an aluminum-zirconium-carbon material.

Preferably, the transition material 3 is made of a mixed material of zirconia and alumina-zirconia-carbon, the apparent porosity is less than or equal to 18%, and the volume density is more than or equal to 4.9 g/cc.

Compared with the prior art, the invention has the advantages that: the step is connected through adopting the stromatolite of zirconia and body to splice in zirconia bowl mouth position, makes the concatenation department of the two form the laminated structure, has consolidated the intensity of zirconia bowl mouth with body concatenation department, has avoided the joint line, has avoided wearing the emergence of steel accident to further prolong the life of mouth of a river.

Through the use of the zirconia lining and the zirconia bowl mouth, the thermal shock stability of the water feeding port is improved, the service life of the water feeding port is further prolonged, and the service life of the water feeding port is twice as long as that of the water feeding port in the prior art. The upper nozzle does not need to be frequently replaced, the production cost is saved, the labor intensity is reduced, and the production requirement of continuous casting steel is met.

Drawings

FIG. 1 is a schematic structural view of a laminated connection stepped penetration-preventing steel feeding port of the present invention;

in the figure: 1. a body; 2. a zirconia lining; 3. transition materials; 4. a zirconia bowl mouth; 5. a molten steel runner; 6. embedding materials; 7. the layers are connected to the steps.

Detailed Description

In view of the defects in the prior art, the technical scheme of the invention is provided through long-term research and massive practice. The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Fig. 1 is a schematic structural view of a laminated connection stepped penetration-preventing steel upper nozzle provided in an embodiment of the present invention. As shown in fig. 1, a laminated connection step penetration-proof steel nozzle provided in the embodiment of the present invention: including body 1, zirconia inside lining 2, transition material 3, zirconia bowl mouth 4, molten steel runner 5, inlay material 6, zirconia inside lining 2 is connected through transition material 3 with body 1, zirconia bowl mouth 4 and body 1 are equipped with the stromatolite and connect ladder 7, zirconia bowl mouth 4 and body 1 are connected the material 6 of inlaying on ladder 7 through being located the stromatolite and are spliced and sealed.

According to the laminated connection ladder steel penetration-preventing water feeding port provided by the embodiment of the invention, the zirconia bowl opening 4 is in a funnel shape, and the diameter of the upper bowl opening is larger than that of the lower bowl opening.

According to the laminated connection stepped steel penetration-preventing water feeding port provided by the embodiment of the invention, the thickness of the zirconia lining 2 is 0.3-0.4 times of that of the body 1.

According to the laminated connection step steel penetration prevention water feeding port provided by the embodiment of the invention, the apparent porosity of the body 1 is more than or equal to 22%, and the volume density is more than or equal to 2.4 g/cc.

According to the laminated connection ladder penetration-resistant steel water supply opening provided by the embodiment of the invention, the zirconia lining 2 and the zirconia bowl opening 4 are both made of zirconia materials, the apparent porosity is less than or equal to 18%, and the volume density is greater than or equal to 5.1 g/cc.

The laminated connecting ladder steel penetration-preventing water feeding port provided by the embodiment of the invention is characterized in that the body 1 is made of an aluminum-zirconium-carbon material.

According to the laminated connection ladder penetration-resistant steel water supply nozzle provided by the embodiment of the invention, the transition material 3 is made of a mixed material of zirconia and aluminum, zirconium and carbon, the apparent porosity is less than or equal to 18%, and the volume density is greater than or equal to 4.9 g/cubic centimeter.

The invention has the beneficial effects that: the step is connected through adopting the stromatolite of zirconia and body to splice in zirconia bowl mouth position, makes the concatenation department of the two form the laminated structure, has consolidated the intensity of zirconia bowl mouth with body concatenation department, has avoided the joint line, has avoided wearing the emergence of steel accident to further prolong the life of mouth of a river.

Through the use of the zirconia lining and the zirconia bowl mouth, the thermal shock stability of the water feeding port is improved, the service life of the water feeding port is further prolonged, and the service life of the water feeding port is twice as long as that of the water feeding port in the prior art. The upper nozzle does not need to be frequently replaced, the production cost is saved, the labor intensity is reduced, and the production requirement of continuous casting steel is met.

It should be understood that the above-mentioned embodiments are only illustrative of the technical concept and features of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.