CN111545716A - Tundish device for rapid-hardening casting belt and casting method of rapid-hardening casting belt - Google Patents
Tundish device for rapid-hardening casting belt and casting method of rapid-hardening casting belt Download PDFInfo
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- CN111545716A CN111545716A CN202010373426.7A CN202010373426A CN111545716A CN 111545716 A CN111545716 A CN 111545716A CN 202010373426 A CN202010373426 A CN 202010373426A CN 111545716 A CN111545716 A CN 111545716A
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- Prior art keywords
- rapid
- bottom plate
- launder
- liquid storage
- casting belt
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- 238000005266 casting Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 230000000052 comparative effect Effects 0.000 description 8
- 239000002893 slag Substances 0.000 description 7
- 238000005192 partition Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0611—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by a single casting wheel, e.g. for casting amorphous metal strips or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/064—Accessories therefor for supplying molten metal
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
The invention discloses a tundish device for a rapid-hardening casting belt, which comprises a front flow groove and a rear flow groove which are connected, wherein the front flow groove is provided with a solution outlet, the bottom of the rear flow groove is a rear bottom plate platform, the bottom of the front flow groove is a front bottom plate platform, a liquid storage pool is arranged between the front flow groove and the rear flow groove, a middle baffle plate is arranged above the liquid storage pool, a gap for allowing a solution to pass is reserved between the middle baffle plate and the liquid storage pool, the horizontal height of the rear bottom plate platform is greater than that of the front bottom plate platform, and the horizontal height of the front bottom plate platform is greater than that of the bottom of the middle baffle plate. And the casting method comprises the steps of injecting the metal solution into the rear launder, enabling the metal solution to enter the liquid storage tank from the rear launder, bypassing the bottom of the middle baffle plate and flowing into the front launder, and enabling the metal solution to flow out from a solution outlet of the front launder to be in contact with the cooling roll to obtain the alloy thin strip. The invention has the advantages that: the gap between the middle baffle and the liquid storage tank is not easy to block, and the temperature of the metal solution is more uniform.
Description
Technical Field
The present invention relates to a tundish device for a rapid-hardening casting belt and a casting method of the rapid-hardening casting belt.
Background
The rapid hardening cast strip is formed by pouring a molten metal into a tundish and then flowing the molten metal to a cooling roll 105, forming a 0.3mm thin sheet on the cooling roll and rapidly cooling the sheet. However, as the molten metal is doped with impurities, which affects the performance of the rapid-hardening casting belt, people adopt the structure shown in fig. 1, and a partition plate 101 is arranged in the tundish to filter out impurities floating on the surface of the molten metal, but the distance between the partition plate 101 and the bottom surface of the tundish 102 is far larger than 0.3mm, which cannot remove slag, and the molten metal is not mixed, which easily causes temperature non-uniformity, so people adopt the structure shown in fig. 2, adjust the distance between the partition plate 101 and the tundish 102 to be small, and form a liquid storage tank 103 between the tundish and the partition plate, but the slag which does not float sufficiently is easily clamped between the partition plate and the bottom of the tundish to cause blockage, and also easily causes short flow.
According to the Chinese published application No. CN109248994A entitled "casting apparatus and casting method for thin strip", a baffle plate 104 is arranged on a liquid outlet channel and forms a liquid storage tank 103 by adopting the structure shown in figure 3, but the problem that part of slag which does not float up is blocked at the gap to cause blockage still exists.
Disclosure of Invention
The invention aims to provide a tundish device for a rapid hardening casting belt and a casting method of the rapid hardening casting belt, which can effectively solve the problem that slag in molten metal in the conventional tundish is easy to block.
In order to solve the technical problems, the invention is realized by the following technical scheme: the utility model provides a quick-hardening is middle package device for cast strip, includes continuous preceding chute and back chute, preceding chute is equipped with the molten liquid egress opening, the bottom of back chute is the back bottom plate platform, the bottom of preceding chute is the front bottom plate platform, it has the liquid reserve tank to open between preceding chute and the back chute, the liquid reserve tank top is equipped with well baffle, leaves the clearance that lets the molten liquid pass through between well baffle and the liquid reserve tank, the level of back bottom plate platform is greater than the level of front bottom plate platform, the level of front bottom plate platform is greater than the level of well baffle bottom.
Preferably, the rear plate is fixed to the tail of the rear launder, and the height of the top of the middle baffle is lower than that of the front launder and that of the rear launder, so that molten metal is prevented from overflowing the rear launder and production is stopped.
Preferably, the middle part of the rear bottom plate table is provided with a gathering groove, so that molten metal can flow conveniently.
Preferably, the rear bottom plate platforms on the two sides of the gathering groove are inclined planes, the horizontal height of one side of each inclined plane close to the gathering groove is the lowest, and the molten metal is gathered towards the middle by the inclined planes on the two sides.
Preferably, preceding chute and back chute integrated into one piece are made, guarantee bulk strength, increase of service life can not appear the crack and cause the molten metal to leak.
Preferably, the front end of the front launder is matched with the cooling roll, so that the dripping of the molten metal from the front launder to the cooling roll is reduced, and the material is saved.
By adopting the casting method of the tundish device for the rapid hardening casting strip, molten metal is injected into the rear launder, enters the liquid storage tank from the rear launder, bypasses the bottom of the middle baffle plate and flows into the front launder, and flows out from the molten metal outlet of the front launder to be contacted with the cooling roll, so that the alloy thin strip is obtained.
Compared with the prior art, the invention has the advantages that: form the difference in height between back chute and preceding chute, and set up the liquid storage tank in its middle, the baffle in the liquid storage tank top sets up, the overflow of difference in height around relying on, can restrain short stream, the melt mixes the in-process, the slag has more time and chance come-up, the liquid storage tank need not well shelves clearance and also can accomplish and hold the liquid, the clearance between well baffle and the liquid storage tank is difficult for blockking up slightly that can keep, the metallic solution temperature is more even, and only there is metallic solution to remain in the liquid storage tank, its quantity of residue is less relatively, improve material utilization.
Drawings
FIG. 1 is a first schematic view of a conventional tundish apparatus for a rapid-hardening casting belt;
FIG. 2 is a schematic view showing a second construction of a conventional tundish apparatus for a rapid-hardening casting belt;
FIG. 3 is a schematic view showing a third construction of a conventional tundish apparatus for a rapid-hardening casting belt;
FIG. 4 is a schematic structural view of a conventional tundish apparatus for a rapid-hardening casting belt according to the present invention;
FIG. 5 is a perspective view of a tundish apparatus for a rapid-hardening casting belt according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be considered as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 4 and 5, a tundish device for a rapid hardening casting belt according to an embodiment of the present invention includes a front launder 1 and a rear launder 2 connected to each other, the front launder 1 is provided with a melt outflow port 3, the bottom of the rear launder 2 is provided with a rear bottom plate platform 4, the bottom of the front runner 1 is a front bottom plate platform 5, a liquid storage tank 6 is arranged between the front runner 1 and the rear runner 2, a middle baffle 7 is arranged above the liquid storage tank 6, a gap 8 for the molten liquid to pass through is reserved between the middle baffle 7 and the liquid storage tank 6, the horizontal height of the rear bottom plate platform 4 is greater than that of the front bottom plate platform 5, the horizontal height of the front bottom plate platform 5 is greater than that of the bottom of the middle baffle 7, the front end of the front launder 1 is matched with the cooling roll, so that gaps between the front launder 1 and the cooling roll are reduced, and waste caused by dripping of molten metal is reduced.
Form the difference in height between back launder 2 and preceding launder 1, and set up liquid storage tank 6 in the middle of it, baffle 7 in 6 tops of liquid storage tank set up, rely on the overflow of difference in height around, can restrain the short stream, the intensive mixing slag, the slag has more time and chance come-up, clearance 8 between well baffle 7 and the liquid storage tank 6 can be left is difficult for blockking up slightly, molten metal temperature is more even, and only have molten metal to remain in the liquid storage tank 6, its volume of remaining is less relatively, improve material utilization.
Generally, the rear plate 9 is fixed at the tail part of the rear runner 2, so that molten metal poured into the rear runner 2 is prevented from flowing out from the rear part, when the molten metal poured into the rear runner 2 is excessive, in order to prevent the molten metal from overflowing the tundish device, the height of the top of the middle baffle 7 is lower than the heights of the front runner 1 and the rear runner 2, so that the excessive molten metal can cross the top of the middle baffle 7 and flow from the rear runner 2 to the front runner 1, and the production stop is prevented.
In order to make the molten metal flowing into the rear launder 2 flow forward better, the middle of the rear bottom plate table 4 is provided with a gathering groove 10, the rear bottom plate tables 4 on two sides of the gathering groove 10 are inclined planes, and the molten metal is guided into the gathering groove 10, so that the molten metal can be mixed and the temperature can be kept uniform. The front runner 1 and the rear runner 2 are generally manufactured integrally, so that the strength is sufficient, cracking is not easy to occur, and the service life can be prolonged.
According to the casting method of the tundish device for the rapid hardening casting strip, molten metal is poured into the rear launder 2, enters the liquid storage tank 6 from the rear launder 2, bypasses the bottom of the middle baffle 7 and flows into the front launder 1, and flows out from the molten metal outlet 3 of the front launder 1 to be contacted with the cooling roll, so that the alloy thin strip is obtained.
By adopting the tundish of the technical scheme, the gap between the middle baffle and the liquid storage tank is 6mm high;
comparative example 1 a common tundish is used, the tundish is a through flat bottom plate and a middle baffle plate, and the seam height of the middle baffle plate is 6 mm;
comparative example 2 a common tundish is used, the tundish is a through flat bottom plate and a middle baffle plate, and the seam of the middle baffle plate is 3mm high;
comparative example 3 the tundish of fig. 3 was used, and the baffle at the front of the outlet was 7mm in height and the outlet seam was 3mm in height;
TABLE 1
In the examples and the comparative examples, 50kg of raw materials are prepared according to the following table 1, placed in a melting crucible, gradually heated to 1450 ℃ by using medium-frequency induction heating, kept for 5 minutes, and then the power is adjusted to 1400 ℃ for casting. By adjusting the casting curve, approximately constant flow casting was carried out at a rate of 0.6 kg/s. The examples and comparative examples were each subjected to 5 experiments to count the distribution of the sheet thickness, the surface impurity condition of the rapidly solidified sheet, the weight of the residual liquid in the tundish and the number of clogging. And manufacturing the sintered neodymium-iron-boron magnet by using the rapid hardening sheet according to a conventional neodymium-iron-boron powder metallurgy production process, and measuring the magnetic property. The summary results are as follows:
| numbering | Thickness of sheet/mm | Tundish residual liquid | Number of blockages | Br | Hcj |
| Example 1 | 0.24±0.04 | 92g | 0/5 | 14.31±0.08 | 14.0±0.5 |
| Comparative example 1 | 0.26±0.07 | 55g | 0/5 | 14.10±0.25 | 12.6±1.4 |
| Comparative example 2 | 0.25±0.05 | 246g | 3/5 | 14.22±0.11 | 13.7±0.9 |
| Comparative example 3 | 0.24±0.06 | |
2/5 | 14.28±0.12 | 13.8±1.0 |
TABLE 2
The final result shows that the technical scheme of the invention has thinner thickness and small deviation, the weight of the residual liquid in the tundish is relatively less, and the tundish is not blocked, thereby obtaining good effect.
The above description is only an embodiment of the present invention, but the technical features of the present invention are not limited thereto, and any changes or modifications within the technical field of the present invention by those skilled in the art are covered by the claims of the present invention.
Claims (7)
1. The utility model provides a tundish device for rapid hardening casting belt which characterized in that: including continuous preceding chute (1) and back chute (2), preceding chute (1) is equipped with solution flow export (3), the bottom of back chute (2) is back bottom plate platform (4), the bottom of preceding chute (1) is preceding bottom plate platform (5), it has liquid storage tank (6) to open between preceding chute (1) and the back chute (2), baffle (7) in being equipped with above liquid storage tank (6), leave clearance (8) that let the solution pass through between well baffle (7) and liquid storage tank (6), the level of back bottom plate platform (4) is greater than the level of preceding bottom plate platform (5), the level of preceding bottom plate platform (5) is greater than the level of well baffle (7) bottom.
2. A tundish apparatus for a rapid-hardening casting belt according to claim 1, wherein: the rear end of the rear runner (2) is fixed with a rear plate (9), and the top of the middle baffle (7) is lower than the height of the front runner (1) and the rear runner (2).
3. A tundish apparatus for a rapid-hardening casting belt according to claim 1, wherein: the middle part of the rear bottom plate table (4) is provided with a convergence groove (10).
4. A tundish apparatus for a rapid-hardening casting belt according to claim 3, wherein: the rear bottom plate platforms (4) on the two sides of the convergence groove (10) are inclined planes, and the horizontal height of one side, close to the convergence groove (10), of each inclined plane is the lowest.
5. A tundish apparatus for a rapid-hardening casting belt according to claim 1, wherein: the front runner (1) and the rear runner (2) are integrally manufactured.
6. A tundish apparatus for a rapid-hardening casting belt according to claim 1, wherein: the front end of the front launder (1) is matched with the cooling roller.
7. A rapid-hardening casting belt casting method using the tundish device for a rapid-hardening casting belt according to any one of claims 1 to 6, characterized in that: and (3) injecting the metal solution into the rear launder (2), enabling the metal solution to enter the liquid storage tank (6) from the rear launder (2), bypassing the bottom of the middle baffle (7) and flowing into the front launder (1), and enabling the metal solution to flow out of the solution outlet (3) of the front launder (1) to be in contact with the cooling roll to obtain the alloy thin strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373426.7A CN111545716A (en) | 2020-05-06 | 2020-05-06 | Tundish device for rapid-hardening casting belt and casting method of rapid-hardening casting belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010373426.7A CN111545716A (en) | 2020-05-06 | 2020-05-06 | Tundish device for rapid-hardening casting belt and casting method of rapid-hardening casting belt |
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| Publication Number | Publication Date |
|---|---|
| CN111545716A true CN111545716A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010373426.7A Pending CN111545716A (en) | 2020-05-06 | 2020-05-06 | Tundish device for rapid-hardening casting belt and casting method of rapid-hardening casting belt |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113560515A (en) * | 2021-06-21 | 2021-10-29 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0523799A (en) * | 1990-12-14 | 1993-02-02 | Wieland Werke Ag | Method and device for manufacturing metal belt with near terminal end |
| KR20090067840A (en) * | 2007-12-21 | 2009-06-25 | 재단법인 포항산업과학연구원 | Apparatus and method for heating nozzle tip during melt drag casting process |
| KR20130002005A (en) * | 2011-06-28 | 2013-01-07 | 재단법인 포항산업과학연구원 | Nozzle for supplying molten metal of metal strip casting process |
| CN104128577A (en) * | 2014-07-01 | 2014-11-05 | 中磁科技股份有限公司 | Casting distributing device for vacuum smelting |
| CN212239124U (en) * | 2020-05-06 | 2020-12-29 | 浙江大学 | Intermediate package device for rapid hardening casting belt |
-
2020
- 2020-05-06 CN CN202010373426.7A patent/CN111545716A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0523799A (en) * | 1990-12-14 | 1993-02-02 | Wieland Werke Ag | Method and device for manufacturing metal belt with near terminal end |
| KR20090067840A (en) * | 2007-12-21 | 2009-06-25 | 재단법인 포항산업과학연구원 | Apparatus and method for heating nozzle tip during melt drag casting process |
| KR20130002005A (en) * | 2011-06-28 | 2013-01-07 | 재단법인 포항산업과학연구원 | Nozzle for supplying molten metal of metal strip casting process |
| CN104128577A (en) * | 2014-07-01 | 2014-11-05 | 中磁科技股份有限公司 | Casting distributing device for vacuum smelting |
| CN212239124U (en) * | 2020-05-06 | 2020-12-29 | 浙江大学 | Intermediate package device for rapid hardening casting belt |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113560515A (en) * | 2021-06-21 | 2021-10-29 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
| CN113560515B (en) * | 2021-06-21 | 2023-01-03 | 杭州电子科技大学 | Tundish for rare earth magnetic material rapid-hardening casting belt and casting method |
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