CN214720522U - Combined integral composite stopper rod - Google Patents
Combined integral composite stopper rod Download PDFInfo
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- CN214720522U CN214720522U CN202120285919.5U CN202120285919U CN214720522U CN 214720522 U CN214720522 U CN 214720522U CN 202120285919 U CN202120285919 U CN 202120285919U CN 214720522 U CN214720522 U CN 214720522U
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Abstract
The utility model belongs to the technical field of continuous casting function refractory material, a compound stopper stick of combination is disclosed, the compound stopper stick of combination is whole includes stick head, changeover portion, barrel and locates the inner chamber in the inside axle center of barrel, and the outer periphery wall of barrel is equipped with the slag line reinforcement cover, and the slag line reinforcement cover is inlayed through the fire clay the outer wall of barrel, its thickness is 10-30mm, highly is 200 + sand 500 mm. The utility model discloses inlay slag line strengthening sleeve at stopper rod body slag line position, this structure has not only reduced the stress that whole stopper rod body bore in the use, and the sleeve pipe of different materials is adopted to the erosion mechanism that still can cover the agent when using to the scene, has effectively avoided the erosion of covering agent to stopper rod body slag line position, has strengthened traditional stopper rod because of well package mechanism vibrations, cover agent crust, the cracked phenomenon of stopper rod body that the slag line erosion attenuation leads to.
Description
Technical Field
The utility model relates to a continuous casting function refractory material technical field especially relates to a compound stopper stick of combination whole.
Background
The integral stopper rod used in the continuous casting process is generally composed of a rod body and a rod head, and is applied to a tundish in the continuous casting process. The stopper rod has very strict use conditions, and can bear the baking of high-temperature gas, the strong thermal shock and the violent scouring in the initial steel casting stage, the impact and the erosion of molten steel and a covering agent, and the stress impact caused by the vibration of a tundish mechanism, particularly under the condition that the tundish covering agent is encrusted, the stress is larger, and the breakage accident of the stopper rod is easily caused.
At present, the whole stopper rod body in the prior art is mainly made of aluminum carbon, the whole stopper rod is subjected to thermal shock when in use, the whole stopper rod must have certain thermal shock resistance and rupture strength, the problems of rod breakage and the like cannot occur, otherwise, the continuous casting can be interrupted, and great economic loss is caused to a steel mill. In addition, the stopper rod body is influenced by vibration of the tundish mechanism and incrustation of the covering agent in the using process, the received breaking resistance is increased, and the breaking resistance is repeatedly applied to the stopper rod body, so that tiny cracks in the stopper rod body are continuously expanded, the stopper rod is finally broken, and tundish accidents are caused to be poured off. Meanwhile, the slag line part of the integral stopper rod is corroded by the tundish covering agent, and the service life of the slag line part is determined by the corrosion resistance. Therefore, in order to prolong the service life of the stopper rod, the improvement of the anti-breaking force bearing capacity and the anti-corrosion performance of the whole stopper rod is particularly necessary according to different steel casting conditions.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compound stopper rod of whole combination, this compound stopper rod is when effectively alleviating body stress, still can avoid traditional whole stopper rod body slag line position because the erosion and the tapering forms the weak point in the use, finally leads to the problem of body fracture phenomenon.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a combined integral composite stopper rod, which comprises a rod head, a transition section and a rod body;
one end of the rod body is fixedly connected with the rod head through a transition section, the other end of the rod body is provided with an inlet hole, and the screw rod is in threaded connection with the screw block through the inlet hole when the stopper rod works;
the outer circumferential wall of the rod body is provided with a slag line reinforcing sleeve, and the slag line reinforcing sleeve is embedded in the outer wall of the rod body through fire clay;
an inner cavity is arranged at the inner axis of the composite stopper rod; a silk block is arranged at the position 50-100mm away from one end of the rod head in the inner cavity; the silk piece is fixed at the outer circumferential wall of the inner cavity.
Preferably, in the combined integral composite stopper rod, the thickness of the slag line reinforcing sleeve is 10-30mm, and the height is 200-500 mm.
Preferably, in the above combined integral composite stopper rod, the distance between the end of the slag line reinforcing sleeve far away from the rod head and the end of the rod body far away from the rod head is h1, the height of the slag line reinforcing sleeve is h2, and the ratio of the height of the slag line reinforcing sleeve to the height of the rod body is h 1: h2 is 1-3: 1-2.
Known through foretell technical scheme, compare with prior art, the utility model discloses following beneficial effect has:
the utility model provides a compound stopper rod of combination, inlay the sleeve pipe of aluminium carbon material or spinel material or magnesium carbon material or zirconium carbon material at stopper rod body slag line position, the stress that whole stopper rod body bore in the use has not only been reduced in setting up of this slag line reinforced sleeve structure, still can adopt the sleeve pipe of different materials to the erosion mechanism of covering agent when using in the scene, effectively avoided the erosion of covering agent to stopper rod body slag line position, strengthened traditional stopper rod because of well package mechanism vibrations, the covering agent crust, the cracked phenomenon of stopper rod body that the slag line erosion attenuation leads to.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural view of the combined integral composite stopper rod of the present invention.
In the figure, 1-club head; 2-a transition section; 3-a stick body; 4-slag line reinforcing sleeve; 5-inner cavity; 6-silk block; 7-entering the hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a combined integral composite stopper rod, as shown in figure 1, comprising a rod head 1, a transition section 2 and a rod body 3; one end of the rod body 3 is fixedly connected with the rod head 1 through the transition section 2, the other end of the rod body is provided with a feed hole 7, and the screw rod is in threaded connection with the screw block 6 through the feed hole 7 when the composite stopper rod works; the outer circumferential wall of the rod body 3 is provided with a slag line reinforcing sleeve 4, and the slag line reinforcing sleeve 4 is embedded in the outer wall of the rod body 3 through fire clay; an inner cavity 5 is arranged at the inner axis of the composite stopper rod; a silk block 6 is arranged at the 50-100mm position of one end of the inner cavity 5 far away from the rod head 1; the wire block 6 is fixed on the outer circumferential wall of the inner cavity 5.
Wherein, the thickness of the slag line reinforcing sleeve 4 is 10-30mm, and the height thereof is 200-500 mm; the distance between one end of the slag line reinforcing sleeve 4 far away from the rod head 1 and one end of the rod body 3 far away from the rod head 1 is h1, the height of the slag line reinforcing sleeve 4 is h2, h 1: h2 is 1-3: 1-2.
Club head 1 is one of magnesium carbon material, spinel material or aluminium carbon material, and changeover portion 2 is spinel material or aluminium carbon material, and shaft 3 is aluminium carbon material, and slag line uide bushing 4 is one of aluminium carbon material, spinel material, magnesium carbon material or zirconium carbon material.
The aluminum-carbon slag line reinforcing sleeve 4 is composed of the following raw materials in parts by weight: 70-85 parts of white corundum or brown corundum, 10-25 parts of graphite, 2-5 parts of additive and 10-15 parts of binding agent; the additive is selected from one or more of metal silicon powder, silicon carbide powder and boron carbide; the bonding agent is phenolic resin.
The spinel slag line reinforcing sleeve 4 is composed of the following raw materials in parts by weight: 70-85 parts of sintered or fused spinel, 10-25 parts of graphite, 2-5 parts of additive and 10-15 parts of bonding agent; the additive is selected from one or more of metal silicon powder, silicon carbide powder and boron carbide; the bonding agent is phenolic resin.
The slag line reinforcing sleeve 4 made of the magnesium-carbon material is composed of the following raw materials in parts by weight: 70-85 parts of sintered or fused magnesia, 10-25 parts of graphite, 2-5 parts of an additive and 10-15 parts of a bonding agent; the additive is selected from one or more of metal silicon powder, silicon carbide powder and boron carbide; the bonding agent is phenolic resin.
The slag line reinforcing sleeve 4 made of zirconium carbon is composed of the following raw materials in parts by weight: 70-85 parts of electric melting stable zirconia, 10-25 parts of graphite, 2-5 parts of an additive and 10-15 parts of a bonding agent; the additive is selected from one or more of metal silicon powder, silicon carbide powder and boron carbide; the bonding agent is phenolic resin.
The preparation method of the combined integral composite stopper rod comprises the following steps: embedding the slag line reinforcing sleeve 4 on the outer wall of the rod body 3 through fire clay, drying at room temperature or 110-220 ℃, and spraying an anti-oxidation coating to obtain the combined integral composite stopper rod.
Wherein the forming method of the slag line reinforcing sleeve 4 is isostatic pressing forming or mechanical pressing forming; the isostatic compaction step comprises: weighing raw materials in proportion, uniformly mixing, granulating, drying, isostatic pressing, calcining at the temperature of 900-1100 ℃ in a non-oxidizing atmosphere to obtain a slag line reinforcing sleeve 4; the mechanical pressing molding step is as follows: weighing the raw materials in proportion, uniformly mixing, molding by mechanical pressing, and drying in an atmosphere with the temperature of 180-.
Example 1
The slag line reinforcing sleeve 4 is made of spinel and is composed of the following raw materials in parts by weight: 75 parts of sintered spinel, 23 parts of graphite, 2 parts of metal silicon powder and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, evenly mixed, granulated, dried, shaped by isostatic pressing, calcined at 900 ℃ in a non-oxidizing atmosphere to obtain a slag line reinforcing sleeve 4 with the thickness of 20mm and the height of 300mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and after being dried at room temperature, an anti-oxidation coating is sprayed, and the manufactured combined integral composite stopper rod is used in a certain steel mill for 45 furnaces for 32 hours, and the slag line part of the stopper rod has good erosion resistance and does not have the phenomenon of rod breakage in the using process.
Example 2
The slag line reinforcing sleeve 4 is made of aluminum carbon and is composed of the following raw materials in parts by weight: 70 parts of brown corundum, 25 parts of graphite, 5 parts of metal silicon powder and 12 parts of phenolic resin. The raw materials are weighed according to a proportion, evenly mixed, granulated, dried, shaped by isostatic pressing, calcined at 950 ℃ in a non-oxidizing atmosphere to obtain a slag line reinforcing sleeve 4 with the thickness of 15mm and the height of 350mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and after being dried at room temperature, an anti-oxidation coating is sprayed, and the manufactured combined integral composite stopper rod is used in a certain steel mill for 60 hours, and is used for 42 hours, and in the using process, the slag line part of the stopper rod has good erosion resistance and the phenomenon of rod breakage does not occur.
Example 3
The slag line reinforcing sleeve 4 is made of magnesium carbon and is composed of the following raw materials in parts by weight: 75 parts of sintered magnesia, 20 parts of graphite, 2 parts of metal silicon powder, 3 parts of silicon carbide powder and 13 parts of phenolic resin. The raw materials are weighed according to a proportion, evenly mixed, granulated, dried, shaped by isostatic pressing, calcined at 900 ℃ in a non-oxidizing atmosphere to obtain a slag line reinforcing sleeve 4 with the thickness of 30mm and the height of 400mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and after being dried at room temperature, an anti-oxidation coating is sprayed, and the manufactured combined integral composite stopper rod is used in a certain steel mill for 45 furnaces for 32 hours, and the slag line part of the stopper rod has good erosion resistance and does not have the phenomenon of rod breakage in the using process.
Example 4
The slag line reinforcing sleeve 4 is made of spinel and is composed of the following raw materials in parts by weight: 85 parts of electric melting spinel, 10 parts of graphite, 3 parts of metal silicon powder, 2 parts of silicon carbide powder and 10 parts of phenolic resin. The raw materials are weighed according to a proportion, evenly mixed, granulated, dried, shaped by isostatic pressing, calcined at the temperature of 1100 ℃ in a non-oxidizing atmosphere to obtain a slag line reinforcing sleeve 4 with the thickness of 10mm and the height of 200mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, dried at room temperature, and sprayed with an anti-oxidation coating, and the manufactured combined integral composite stopper rod is used in a certain steel mill for 55 furnaces for 40 hours, and the slag line part of the stopper rod has good erosion resistance and does not have the phenomenon of rod breakage in the using process.
Example 5
The slag line reinforcing sleeve 4 is made of zirconium carbon and comprises the following raw materials in parts by weight: 85 parts of electrofusion-stabilized zirconia, 10 parts of graphite, 4 parts of metal silicon powder, 1 part of boron carbide and 11 parts of phenolic resin. The raw materials are weighed according to a proportion, evenly mixed, granulated, dried, shaped by isostatic pressing, calcined at the temperature of 1000 ℃ in a non-oxidizing atmosphere to obtain the slag line reinforcing sleeve 4 with the thickness of 15mm and the height of 350mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and after being dried at room temperature, sprayed with an anti-oxidation coating, and the manufactured combined integral composite stopper rod is used in a certain steel mill for 80 hours, and is used for 58 hours, and in the using process, the slag line part of the stopper rod has good erosion resistance and the phenomenon of rod breakage does not occur.
Example 6
The slag line reinforcing sleeve 4 is made of zirconium carbon and comprises the following raw materials in parts by weight: 70 parts of electrofusion-stabilized zirconia, 25 parts of graphite, 4 parts of metal silicon powder, 1 part of silicon carbide powder and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, uniformly mixed, molded by machine pressing, dried in the atmosphere at the temperature of 200 ℃ to obtain the slag line reinforcing sleeve 4 with the thickness of 25mm and the height of 250mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and sprayed with the anti-oxidation coating after being dried at room temperature, so that the prepared combined integral composite stopper rod is used in a steel mill for 65 hours and is used for 51 hours, and in the using process, the slag line part of the stopper rod has good erosion resistance and the phenomenon of rod breakage does not occur.
Example 7
The slag line reinforcing sleeve 4 is made of aluminum carbon and is composed of the following raw materials in parts by weight: 85 parts of white corundum, 10 parts of graphite, 5 parts of metal silicon powder and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, uniformly mixed, molded by machine pressing, dried in the atmosphere at the temperature of 200 ℃ to obtain the slag line reinforcing sleeve 4 with the thickness of 25mm and the height of 250mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and sprayed with the anti-oxidation coating after being dried at room temperature, so that the prepared combined integral composite stopper rod is used in a steel mill for 65 hours and is used for 51 hours, and in the using process, the slag line part of the stopper rod has good erosion resistance and the phenomenon of rod breakage does not occur.
Example 8
The slag line reinforcing sleeve 4 is made of zirconium carbon and comprises the following raw materials in parts by weight: 70 parts of electrofusion-stabilized zirconia, 25 parts of graphite, 4 parts of metal silicon powder, 1 part of boron carbide and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, uniformly mixed, molded by machine pressing, dried in the atmosphere at the temperature of 200 ℃ to obtain a slag line reinforcing sleeve 4 with the thickness of 10mm and the height of 250mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and sprayed with an anti-oxidation coating after being dried at room temperature, so that the prepared combined integral composite stopper rod is used in a certain steel mill for 50 hours, and the combined integral composite stopper rod has good erosion resistance of the slag line part of the stopper rod and does not have the phenomenon of rod breakage in the use process.
Example 9
The slag line reinforcing sleeve 4 is made of magnesium carbon and is composed of the following raw materials in parts by weight: 85 parts of sintered magnesia, 10 parts of graphite, 5 parts of silicon carbide powder and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, uniformly mixed, molded by machine pressing, dried in the atmosphere at the temperature of 180 ℃ to obtain the slag line reinforcing sleeve 4 with the thickness of 30mm and the height of 250mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and sprayed with the anti-oxidation coating after being dried at room temperature, so that the prepared combined integral composite stopper rod is used in a steel mill for 65 hours and is used for 51 hours, and in the using process, the slag line part of the stopper rod has good erosion resistance and the phenomenon of rod breakage does not occur.
Example 10
The slag line reinforcing sleeve 4 is made of spinel and is composed of the following raw materials in parts by weight: 70 parts of fused spinel, 25 parts of graphite, 4 parts of metal silicon powder, 1 part of boron carbide and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, uniformly mixed, molded by machine pressing, dried in the atmosphere at the temperature of 180 ℃ to obtain a slag line reinforcing sleeve 4 with the thickness of 30mm and the height of 200mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and sprayed with an anti-oxidation coating after being dried at room temperature, so that the prepared combined integral composite stopper rod is used in a steel mill for 65 hours and is used for 51 hours, and in the using process, the slag line part of the stopper rod has good erosion resistance and the phenomenon of rod breakage does not occur.
Example 11
The slag line reinforcing sleeve 4 is made of aluminum carbon and is composed of the following raw materials in parts by weight: 70 parts of brown corundum, 25 parts of graphite, 2 parts of metal silicon powder, 3 parts of silicon carbide powder and 15 parts of phenolic resin. The raw materials are weighed according to a proportion, evenly mixed, molded by machine pressing, dried in the atmosphere with the temperature of 180 ℃ to obtain the slag line reinforcing sleeve 4 with the thickness of 10mm and the height of 500mm, then embedded on the outer wall of the corresponding rod body 3 by using fire clay, and sprayed with the anti-oxidation coating after being dried at room temperature, and the manufactured combined integral composite stopper rod is used in a certain steel factory for 48 hours, and has good corrosion resistance and no rod breakage phenomenon in the use process.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (3)
1. The combined integral composite stopper rod is characterized by comprising a rod head (1), a transition section (2) and a rod body (3);
one end of the rod body (3) is fixedly connected with the rod head (1) through the transition section (2), and the other end of the rod body is provided with an inlet hole (7);
the outer circumferential wall of the rod body (3) is provided with a slag line reinforcing sleeve (4), and the slag line reinforcing sleeve (4) is embedded in the outer wall of the rod body (3) through fire clay;
an inner cavity (5) is arranged at the inner axis of the composite stopper rod; a silk block (6) is arranged at the position 50-100mm away from one end of the rod head (1) of the inner cavity (5); the silk block (6) is fixed on the outer circumferential wall of the inner cavity (5).
2. A composite integral stopper rod as claimed in claim 1 wherein the slag line reinforcement sleeve (4) has a thickness of 10-30mm and a height of 200-500 mm.
3. A combined integral composite stopper rod according to claim 1 wherein the distance between the end of the slag line reinforcing sleeve (4) remote from the rod head (1) and the end of the rod body (3) remote from the rod head (1) is h1, the height of the slag line reinforcing sleeve (4) is h2, the height of h 1: h2 is 1-3: 1-2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285919.5U CN214720522U (en) | 2021-02-01 | 2021-02-01 | Combined integral composite stopper rod |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120285919.5U CN214720522U (en) | 2021-02-01 | 2021-02-01 | Combined integral composite stopper rod |
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| CN214720522U true CN214720522U (en) | 2021-11-16 |
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| CN202120285919.5U Active CN214720522U (en) | 2021-02-01 | 2021-02-01 | Combined integral composite stopper rod |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117430413A (en) * | 2023-12-20 | 2024-01-23 | 山西昊业新材料开发有限公司 | Stopper rod for continuous casting and preparation method thereof |
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2021
- 2021-02-01 CN CN202120285919.5U patent/CN214720522U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117430413A (en) * | 2023-12-20 | 2024-01-23 | 山西昊业新材料开发有限公司 | Stopper rod for continuous casting and preparation method thereof |
| CN117430413B (en) * | 2023-12-20 | 2024-03-12 | 山西昊业新材料开发有限公司 | Stopper rod for continuous casting and preparation method thereof |
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