CN114932214A - Masonry method for preventing steel infiltration of stainless steel continuous casting tundish nozzle - Google Patents
Masonry method for preventing steel infiltration of stainless steel continuous casting tundish nozzle Download PDFInfo
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- CN114932214A CN114932214A CN202210662843.2A CN202210662843A CN114932214A CN 114932214 A CN114932214 A CN 114932214A CN 202210662843 A CN202210662843 A CN 202210662843A CN 114932214 A CN114932214 A CN 114932214A
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- water gap
- brick
- continuous casting
- masonry
- stainless steel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
- B22D41/52—Manufacturing or repairing thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
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Abstract
A masonry method for preventing a stainless steel continuous casting tundish nozzle from steel infiltration belongs to the technical field of steelmaking smelting, solves the technical problem of steel infiltration at the position of the stainless steel continuous casting tundish nozzle, and comprises the following steps: 1) fixing a water gap: a gap between the bottom steel plate and the water gap is firstly tamped tightly by a ramming material, and the height of the ramming material layer is 230-240 mm; 2) installing a brick cup: a through groove is arranged at the upper part of the inner side wall of the brick cup; smearing joint filling materials on the inner side wall of the brick cup, wherein the thickness of a joint filling material layer is 5-7mm, and then installing the brick cup smeared with the joint filling materials on the side wall of a water gap above a ramming material layer; paving brick filler in the through groove, wherein the height of a brick filler layer is 25 mm; 3) and (4) fully paving the periphery of the brick cup with a ramming material to enable the upper surface of the masonry to be level with the working surface of the bottom of the tundish, thereby completing the water gap masonry. The invention effectively solves the problem of steel infiltration between the nozzle and the brick cup in the continuous casting process of stainless steel.
Description
Technical Field
The invention belongs to the technical field of steelmaking and smelting, and particularly relates to a masonry method for preventing a water gap of a stainless steel continuous casting tundish from steel infiltration.
Background
With the continuous improvement of the steel production efficiency, the continuous casting time of the stainless steel continuous casting tundish is gradually improved, and the steel infiltration problem between the tundish nozzle and the brick cup restricts the improvement of the stainless steel continuous casting efficiency. The stainless steel has large solidification range, low solidification speed and long corresponding solidification time, and is not easy to solidify when seeping between the tundish nozzle and the brick cup. Molten steel often oozes out from the gap between the nozzle and the brick cup, and seriously oozes out of the surface of the slide plate, so that the normal casting operation of the tundish is influenced, the continuous casting is forced to stop, the production efficiency of continuous casting is influenced, and meanwhile, potential safety hazards exist in the operation process.
The chinese patent with application number 201510852018.9 discloses a "tundish and tundish nozzle seepage-proofing steel installation method", which can not eliminate the problem of seepage in the practice of stainless steel continuous casting tundish.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and solve the technical problem of steel infiltration at the position of a tundish nozzle in stainless steel continuous casting.
In order to solve the problems, the technical scheme of the invention is as follows:
a masonry method for preventing a stainless steel continuous casting tundish nozzle from steel infiltration comprises the following steps:
s1, fixing the water gap: a gap between the bottom steel plate and the water gap is firstly tamped tightly by a ramming material, and the height of the ramming material layer is 230-240 mm;
s2, mounting brick:
s2-1, forming a through groove on the upper part of the inner side wall of the seat brick;
s2-2, smearing joint filling materials on the inner side wall of the brick cup, wherein the thickness of a joint filling material layer is 5-7mm, and then installing the brick cup smeared with the joint filling materials on the side wall of a water gap above a ramming material layer;
s2-3, paving brick cup filler into the through groove, wherein the height of a brick cup filler layer is 25 mm;
and S3, paving the periphery of the seat brick with a ramming material to enable the upper surface of the masonry to be flush with the working surface of the bottom of the tundish, and completing the water gap masonry.
Further, the water gap is externally mounted.
Further, the joint filler is corundum refractory mortar of phosphate binder.
Furthermore, the brick cup is made of aluminum carbon.
Furthermore, the filler of the brick cup is made of chromium-silicon amorphous refractory material with the granularity of 0.125-1.5 mm and the refractoriness of 1800-1900 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention effectively solves the problem of steel infiltration between the nozzle and the brick cup in the continuous casting process of the stainless steel, the maximum continuous casting time of a single ladle is increased from 600min to 750min, and the production efficiency of the continuous casting of the stainless steel is improved by 25 percent.
Drawings
FIG. 1 is a schematic diagram of a construction structure of a tundish of an externally-mounted water gap in the prior art;
fig. 2 is a schematic diagram of the masonry structure of the externally-mounted water gap tundish according to the invention.
In the figure, 1 is a working lining plate, 2 is a permanent lining plate, 3 is a bottom wrapping steel plate, 4 is a ramming material layer, 5 is a brick cup, 6 is a water gap, 7 is a joint filling material layer, and 8 is a brick cup filling material layer.
Detailed Description
The invention is described in further detail below with reference to the figures and examples.
The masonry method for preventing the steel infiltration of the water gap of the stainless steel continuous casting tundish shown in figure 2 comprises the following steps:
s1, fixed water gap 6: the water gap 6 is externally mounted, a gap between the ladle bottom steel plate 3 and the water gap 6 is firstly tamped tightly by a tamping material, and the height of the tamping material layer 4 is 235 mm;
s2, mounting brick cup 5:
s2-1, the brick cup 5 is made of aluminum carbon, and a through groove is formed in the upper portion of the inner side wall of the brick cup 5;
s2-2, smearing joint filling materials on the inner side wall of a seat brick 5, wherein the joint filling materials are phosphate cement corundum refractory slurry, the thickness of a joint filling material layer 7 is 5mm, and then installing the seat brick 5 smeared with the joint filling materials on the side wall of a water gap 6 above a ramming material layer 4;
s2-3, paving a brick cup filler into the through groove, wherein the brick cup filler is made of a chromium-silicon amorphous refractory material, the granularity is 0.125-1.5 mm, the refractoriness is 1800-1900 ℃, and the height of a brick cup filler layer 8 is 25 mm;
and S3, paving the periphery of the seat brick 5 with ramming materials to enable the upper surface of the masonry to be flush with the working surface of the bottom of the tundish, and completing water gap masonry.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. A masonry method for preventing a stainless steel continuous casting tundish nozzle from steel infiltration is characterized by comprising the following steps:
s1, fixed water gap (6): a gap between the bottom steel plate (3) and the water gap (6) is firstly tamped tightly by a ramming material, and the height of the ramming material layer (4) is 230-240 mm;
s2, mounting brick (5):
s2-1, a through groove is formed in the upper portion of the inner side wall of the seat brick (5);
s2-2, smearing joint filling materials on the inner side wall of the seat brick (5), wherein the thickness of a joint filling material layer (7) is 5-7mm, and then installing the seat brick (5) smeared with the joint filling materials on the side wall of the water gap (6) above the ramming material layer (4);
s2-3, paving brick cup filling materials into the through groove, wherein the height of a brick cup filling material layer (8) is 25 mm;
and S3, paving the periphery of the seat brick (5) with a ramming material to enable the upper surface of the masonry to be flush with the working surface of the bottom of the tundish, and completing water gap masonry.
2. The masonry method for preventing the steel infiltration of the water gap of the stainless steel continuous casting tundish according to claim 1, wherein the masonry method comprises the following steps: the water gap (6) is externally mounted.
3. The masonry method for preventing the steel infiltration of the water gap of the stainless steel continuous casting tundish according to claim 1, wherein the masonry method comprises the following steps: the joint filler is phosphate bond corundum refractory slurry.
4. The masonry method for preventing the steel infiltration of the water gap of the stainless steel continuous casting tundish according to claim 1, wherein the masonry method comprises the following steps: the brick cup (5) is made of aluminum carbon.
5. The masonry method for preventing the steel infiltration of the water gap of the stainless steel continuous casting tundish according to claim 1, wherein the masonry method comprises the following steps: the material of the brick cup filler is chromium-silicon amorphous refractory material, the granularity is 0.125-1.5 mm, and the refractoriness is 1800-1900 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210662843.2A CN114932214A (en) | 2022-06-13 | 2022-06-13 | Masonry method for preventing steel infiltration of stainless steel continuous casting tundish nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210662843.2A CN114932214A (en) | 2022-06-13 | 2022-06-13 | Masonry method for preventing steel infiltration of stainless steel continuous casting tundish nozzle |
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| CN114932214A true CN114932214A (en) | 2022-08-23 |
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| CN202210662843.2A Pending CN114932214A (en) | 2022-06-13 | 2022-06-13 | Masonry method for preventing steel infiltration of stainless steel continuous casting tundish nozzle |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000043684A (en) * | 1998-12-29 | 2000-07-15 | 이구택 | Filling material for steel-making |
| CN102515806A (en) * | 2011-12-26 | 2012-06-27 | 上海利尔耐火材料有限公司 | Wet refractory mortar and preparation method thereof |
| CN105436495A (en) * | 2015-11-26 | 2016-03-30 | 武汉钢铁(集团)公司 | Tundish and tundish water gap impervious steel installing method |
| CN205309290U (en) * | 2015-12-25 | 2016-06-15 | 振石集团东方特钢有限公司 | Immersion nozzle and brick cup structure of middle package |
| CN205324718U (en) * | 2015-12-25 | 2016-06-22 | 振石集团东方特钢有限公司 | Middle package immersion nozzle prevention of seepage steel brick cup |
| CN106513651A (en) * | 2017-01-04 | 2017-03-22 | 武汉精鼎科技股份有限公司 | Iron-leak-preventing structure for permeable brick of hot metal ladle and replacing method for iron-leak-preventing permeable brick |
| CN209157112U (en) * | 2018-06-21 | 2019-07-26 | 马鞍山利尔开元新材料有限公司 | A kind of ladle upper nozzle brick |
| RU2712206C1 (en) * | 2019-03-05 | 2020-01-24 | Сергей Касимович Вильданов | Method of filling with refractory material outlet channel of steel casting ladle |
| CN214488816U (en) * | 2021-02-25 | 2021-10-26 | 山西铄金高温材料科技有限公司 | Ladle brick cup in middle of prevention of seepage steel |
-
2022
- 2022-06-13 CN CN202210662843.2A patent/CN114932214A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000043684A (en) * | 1998-12-29 | 2000-07-15 | 이구택 | Filling material for steel-making |
| CN102515806A (en) * | 2011-12-26 | 2012-06-27 | 上海利尔耐火材料有限公司 | Wet refractory mortar and preparation method thereof |
| CN105436495A (en) * | 2015-11-26 | 2016-03-30 | 武汉钢铁(集团)公司 | Tundish and tundish water gap impervious steel installing method |
| CN205309290U (en) * | 2015-12-25 | 2016-06-15 | 振石集团东方特钢有限公司 | Immersion nozzle and brick cup structure of middle package |
| CN205324718U (en) * | 2015-12-25 | 2016-06-22 | 振石集团东方特钢有限公司 | Middle package immersion nozzle prevention of seepage steel brick cup |
| CN106513651A (en) * | 2017-01-04 | 2017-03-22 | 武汉精鼎科技股份有限公司 | Iron-leak-preventing structure for permeable brick of hot metal ladle and replacing method for iron-leak-preventing permeable brick |
| CN209157112U (en) * | 2018-06-21 | 2019-07-26 | 马鞍山利尔开元新材料有限公司 | A kind of ladle upper nozzle brick |
| RU2712206C1 (en) * | 2019-03-05 | 2020-01-24 | Сергей Касимович Вильданов | Method of filling with refractory material outlet channel of steel casting ladle |
| CN214488816U (en) * | 2021-02-25 | 2021-10-26 | 山西铄金高温材料科技有限公司 | Ladle brick cup in middle of prevention of seepage steel |
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