阅读说明：本技术 一种耐高温氧化锆渣线环组合侵入式水口 (High-temperature-resistant zirconia slag line ring combined invasive water gap ) 是由 高桂航 周九喜 刘沛建 梁邦喜 张美杰 钱晓飞 高桂显 于 2020-10-08 设计创作，主要内容包括：本发明公开了一种耐高温氧化锆渣线环组合浸入式水口,包括碗部(1)、本体(2)、组合渣线(3),所述碗部(1)为漏斗状结构,所述组合渣线(3)由氧化锆渣线环(4)、本体渣线(5)及镶嵌料(6)组成,所述氧化锆渣线环(4)位于本体渣线(5)外侧,所述镶嵌料(6)位于氧化锆渣线环(4)及本体渣线(5)之间,所述氧化锆渣线环(4)及本体渣线(5)特设有锯齿状结构(7)。本发明的渣线部位采用氧化锆渣线环与本体渣线组合的方式进行拼接,提高了渣线部位耐钢水的热冲击性能及耐熔渣、熔钢的侵蚀性能。氧化锆渣线环及本体渣线特设有的锯齿结构,牢固性能更加优越,其寿命是现有浸入式水口寿命的2-3倍。(The invention discloses a high-temperature-resistant zirconia slag wire ring combined submerged nozzle which comprises a bowl part (1), a body (2) and a combined slag wire (3), wherein the bowl part (1) is of a funnel-shaped structure, the combined slag wire (3) is composed of a zirconia slag wire ring (4), a body slag wire (5) and an embedding material (6), the zirconia slag wire ring (4) is positioned on the outer side of the body slag wire (5), the embedding material (6) is positioned between the zirconia slag wire ring (4) and the body slag wire (5), and the zirconia slag wire ring (4) and the body slag wire (5) are specially provided with a saw-toothed structure (7). The slag line part is spliced by adopting a mode of combining the zirconia slag line ring and the body slag line, so that the thermal shock resistance of molten steel and the erosion resistance of molten slag and molten steel of the slag line part are improved. The zirconia slag wire ring and the special sawtooth structure of the body slag wire have more excellent firmness, and the service life of the zirconia slag wire ring and the body slag wire is 2-3 times of that of the conventional submerged nozzle.)

1. The utility model provides a high temperature resistant zirconia slag wire ring combination immersion nozzle which characterized in that: including bowl portion (1), body (2), combination slag line (3), bowl portion (1) is hopper-shaped structure, combination slag line (3) comprises zirconia slag line ring (4), body slag line (5) and inlay material (6), zirconia slag line ring (4) are located body slag line (5) outside, it is located between zirconia slag line ring (4) and body slag line (5) to inlay material (6), zirconia slag line ring (4) and body slag line (5) specially are equipped with sawtooth structure (7).

2. The high-temperature-resistant zirconia slag wire ring combined submerged nozzle of claim 1, which is characterized in that: the high temperature resistance of the zirconia slag wire ring (4) is more than 1780 ℃.

3. The high-temperature-resistant zirconia slag wire ring combined submerged nozzle of claim 1, which is characterized in that: the high temperature resistance of the body slag line (5) is more than 1600 ℃.

4. The high-temperature-resistant zirconia slag wire ring combined submerged nozzle of claim 1, which is characterized in that: the length of the combined slag line (3) is set to be 90-140mm according to the use condition.

5. The high-temperature-resistant zirconia slag wire ring combined submerged nozzle of claim 1, which is characterized in that: the thickness of the body slag line (5) is 2-2.5 times of that of the zirconia slag line ring (4).

6. The high temperature resistant zirconia slag line ring combined invasive water gap of claim 1, wherein: the thickness of the combined slag line (3) is the same as that of the body (2).

7. The high temperature resistant zirconia slag line ring combined invasive water gap of claim 1, wherein: ZrO in the zirconia slag wire ring (4)₂The content of the zirconium oxide slag wire ring is more than or equal to 95.5 percent, and the zirconium oxide slag wire ring material is calcium-yttrium composite stable zirconium oxide.

8. The high temperature resistant zirconia slag line ring combined invasive water gap of claim 1, wherein: the high-temperature expansion of the embedding material (6) is realized to relieve the influence of the high-temperature expansion of the body slag line (5) on the zirconia slag line ring (4) and prevent the zirconia slag line ring (4) from bursting.

Technical Field

The invention relates to the technical field of continuous casting processing of refractory materials, in particular to a high-temperature-resistant zirconium oxide slag line ring combined submerged nozzle.

Background

The submerged entry nozzle is a refractory casing for casting which is installed in the lower part of a tundish in a continuous steel casting facility and is inserted below the molten steel level of a crystallizer. The method can prevent molten steel from being oxidized and splashed, avoid the crystallization protective slag from being involved in the molten steel, and prevent the molten steel from being mixed.

The slag line part of the submerged nozzle is the most seriously corroded part, the submerged nozzle in the prior art adopts an integrated structure, the carbon-containing zirconia material is used outside the slag line part, the erosion resistance and the molten steel scouring resistance of the submerged nozzle are poor, the service life is short, the submerged nozzle needs to be frequently replaced, the labor intensity and the production cost are increased, and the production requirement of continuous casting steel cannot be met. The invention provides a high-temperature-resistant zirconium oxide slag wire ring combined submerged nozzle which has excellent thermal shock resistance of molten steel and excellent erosion resistance of molten slag and molten steel. The service life of the submerged nozzle is (2-3) times longer than that of the submerged 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 solve the technical problems that the submerged nozzle in the prior art adopts an integrated structure, the carbon-containing zirconia material is used outside a slag line part, the erosion resistance and molten steel scouring resistance of the submerged nozzle are poor, the service life is short, the submerged nozzle needs to be frequently replaced, the labor intensity and the production cost are increased, and the production requirement of continuous casting steel cannot be met.

In order to achieve the purpose, the invention adopts the technical scheme that: including bowl portion 1, body 2, combination slag line 3, bowl portion 1 is for leaking hopper-shaped structure, combination slag line 3 comprises zirconia slag line ring 4, body slag line 5 and inlay material 6, zirconia slag line ring 4 is located the 5 outsides of body slag line, it is located between zirconia slag line ring 4 and body slag line 5 to inlay material 6, zirconia slag line ring 4 and body slag line 5 specially are equipped with sawtooth structure 7.

Further, the high temperature resistance of the zirconia slag line ring 4 is more than 1780 ℃.

Further, the high temperature resistance of the body slag line 5 is more than 1600 ℃.

Further, the length of the combined slag line 3 is set to be between 90 and 140mm according to the use condition.

Further, the thickness of the body slag line 5 is 2-2.5 times of that of the zirconia slag line ring 4.

Further, the thickness of the combined slag line 3 is the same as that of the body 2.

Further, ZrO in the zirconia slag line ring 4₂The content of the calcium-yttrium-composite stabilized zirconia is more than or equal to 95.5 percent, and the calcium-yttrium-composite stabilized zirconia is used as a material to improve the thermal shock resistance of the calcium-yttrium-calcium-.

Furthermore, the high-temperature expansion of the embedding material is realized to relieve the influence of the high-temperature expansion of the slag line of the body on the zirconia slag line ring and prevent the zirconia slag line ring from expanding and cracking.

Compared with the prior art, the invention has the advantages that: the slag line part is formed by a zirconia slag line ring, a body slag line and an embedding material, so that the thermal shock resistance of molten steel and the erosion resistance of molten slag and molten steel of the slag line part are improved, the service life of the submerged nozzle is prolonged, and the service life of the submerged nozzle is 2-3 times that of the conventional submerged nozzle. The submerged nozzle does not need to be frequently replaced, the production cost is saved, and the labor intensity is reduced.

Through the sawtooth structure that zirconia slag wire ring and body slag line specially were equipped with for zirconia slag wire ring and body slag line connection friction increase, connect inseparabler, and the fastness can be more superior.

Compared with the existing submerged nozzle, the service life of the submerged nozzle is prolonged by more than 10 hours by the high temperature resistance and the slag corrosion resistance of the zirconia slag wire ring.

In conclusion, the submerged nozzle provided by the invention has excellent thermal shock resistance of molten steel and erosion resistance of molten slag and molten steel, the service life of the submerged nozzle is 2-3 times that of the conventional submerged nozzle, the submerged 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 high temperature resistant zirconia slag line ring combined invasive water gap of the present invention;

FIG. 2 is a schematic view of a high temperature resistant zirconia slag line ring combined invasive water gap combined slag line structure of the present invention;

in the figure: 1. a bowl portion; 2. a body; 3. combining slag lines; 4. zirconia slag wire rings; 5. a body slag line; 6. embedding materials; 7. a saw-toothed structure.

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 view of a high temperature resistant zirconia slag line ring combined invasive nozzle structure provided in an embodiment of the present invention, and fig. 2 is a schematic view of a high temperature resistant zirconia slag line ring combined invasive nozzle combined slag line structure of the present invention. As shown in fig. 1 and fig. 2, a refractory zirconia slag line ring combined submerged nozzle provided in an embodiment of the present invention: including bowl portion 1, body 2, combination slag line 3, bowl portion 1 is for leaking hopper-shaped structure, combination slag line 3 comprises zirconia slag line ring 4, body slag line 5 and inlay material 6, zirconia slag line ring 4 is located the 5 outsides of body slag line, it is located between zirconia slag line ring 4 and body slag line 5 to inlay material 6, zirconia slag line ring 4 and body slag line 5 specially are equipped with sawtooth structure 7.

In the high-temperature-resistant zirconium oxide slag line ring combined submerged nozzle provided by the embodiment of the invention, the high temperature resistance of the zirconium oxide slag line ring 4 is greater than 1780 ℃. Compared with the existing submerged nozzle slag line, the high temperature resistance and the molten slag corrosion resistance of the zirconia slag line ring 4 are obviously improved.

In the high-temperature-resistant zirconium oxide slag line ring combined submerged nozzle provided by the embodiment of the invention, the high temperature resistance of the body slag line 5 is more than 1600 ℃.

According to the high-temperature-resistant zirconium oxide slag line ring combined submerged nozzle provided by the embodiment of the invention, the length of the combined slag line 3 is set to be between 90 and 140mm according to the use condition.

In the high-temperature-resistant zirconium oxide slag line ring combined submerged nozzle provided by the embodiment of the invention, the thickness of the body slag line 5 is 2-2.5 times that of the zirconium oxide slag line ring 4.

According to the high-temperature-resistant zirconium oxide slag line ring combined invasive water gap provided by the embodiment of the invention, the thickness of the combined slag line 3 is the same as that of the body 2.

In the high-temperature-resistant zirconium oxide slag line ring combined invasive water gap provided in the embodiment of the invention, ZrO in the zirconium oxide slag line ring 4₂The content of the calcium-yttrium-composite stable zirconia is more than or equal to 95.5 percent, and the calcium-yttrium-composite stable zirconia is used as a material to improve the thermal shock resistance of the calcium-yttrium-calcium-yttrium-.

According to the high-temperature-resistant zirconia slag line ring combined invasive water gap provided by the embodiment of the invention, the embedding material (6) expands at high temperature so as to relieve the influence of the high-temperature expansion of the body slag line (5) on the zirconia slag line ring (4) and prevent the zirconia slag line ring (4) from spalling.

The beneficial effects of the invention include: by adopting the mode of the zirconia slag line ring, the body slag line and the insert, the thermal shock resistance of molten steel and the erosion resistance of molten slag and molten steel at the slag line part are improved, the service life of the submerged nozzle is prolonged, and the service life of the submerged nozzle is 2-3 times that of the conventional submerged nozzle. The submerged nozzle does not need to be frequently replaced, the production cost is saved, and the labor intensity is reduced.

Through the sawtooth structure that zirconia slag wire ring and body slag line specially were equipped with for zirconia slag wire ring and body slag line connection friction increase, connect inseparabler, and the fastness can be more superior.

The high temperature resistance and the slag erosion resistance of the zirconia slag wire ring are obviously improved compared with the existing submerged nozzle slag wire by the high temperature resistance of 1780 ℃.

In conclusion, the submerged nozzle provided by the invention has excellent thermal shock resistance of molten steel and erosion resistance of molten slag and molten steel, the service life of the submerged nozzle is 2-3 times that of the conventional submerged nozzle, the submerged 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 present invention is not limited to the above-mentioned embodiments, but the present invention can be implemented by those skilled in the art. 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.