CN216427374U - Refining device of copper alloy casting liquid for copper plate strip - Google Patents
Refining device of copper alloy casting liquid for copper plate strip Download PDFInfo
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- CN216427374U CN216427374U CN202122706039.3U CN202122706039U CN216427374U CN 216427374 U CN216427374 U CN 216427374U CN 202122706039 U CN202122706039 U CN 202122706039U CN 216427374 U CN216427374 U CN 216427374U
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- air inlet
- tundish
- copper alloy
- inlet section
- copper
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Abstract
The utility model discloses a refining device of copper alloy casting liquid for copper strips, which comprises a casting holding furnace and a tundish, wherein the casting holding furnace and the tundish are mutually communicated, and the bottom of the tundish is provided with an air inlet channel and an air inlet pipe; the air inlet channel comprises a lower air inlet section and an upper air inlet section, the lower air inlet section is an air brick, the upper air inlet section is air permeable sand, the lower air inlet section is communicated with the air inlet pipe, and the upper air inlet section is communicated with the inner cavity of the tundish. The utility model discloses a refining plant of copper alloy casting liquid for copper area lets in gaseous edulcoration through the inlet channel from the bottom of centre package, and simple structure can detach harmful gas and high melting point light inclusion, and the edulcoration is effectual.
Description
Technical Field
The utility model belongs to the technical field of the casting, especially, relate to a copper alloy casting liquid's refining plant for copper strip.
Background
The quality of the copper strip depends on the quality of the copper alloy, and the purity of the copper alloy determines the heat conduction performance, the electric conduction performance and the like of the copper strip. The purity of the casting liquid plays an important role in the quality of the copper alloy in the casting process of the copper alloy, and particularly the content of non-metallic inclusions in the casting liquid becomes an important index influencing the quality of a casting blank.
In recent years, the study on the tundish metallurgy is intensive, and the reduction of the inclusion of the casting liquid in the tundish in the casting process contributes to the refining of the ingot. There are researchers who use the centrifugal tundish technique in order to remove inclusions in the tundish casting solution. In the centrifugal tundish technology, a rotating magnetic field is used for driving molten steel in a circular cavity of a tundish to generate rotary motion, so that inclusions with low density are rotationally gathered to a central position and then removed. However, the centrifugal tundish technology is suitable for magnetic molten steel, and the method cannot be adopted for casting copper alloy without magnetism.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a refining plant of copper alloy casting liquid for copper area can effectively reduce the purity of copper alloy casting liquid in the casting process to improve the internal quality of copper alloy ingot casting.
The technical scheme of the utility model is that:
a refining device of copper alloy casting liquid for copper plates and strips comprises a casting holding furnace and a tundish, wherein the casting holding furnace and the tundish are communicated with each other, and the bottom of the tundish is provided with an air inlet channel and an air inlet pipe; the air inlet channel comprises a lower air inlet section and an upper air inlet section, the lower air inlet section is an air brick, the upper air inlet section is air permeable sand, the lower air inlet section is communicated with the air inlet pipe, and the upper air inlet section is communicated with the inner cavity of the tundish.
Preferably, the upper air inlet section is in a horn shape with a large upper part and a small lower part.
Preferably, the air inlet channels are uniformly distributed at the bottom of the tundish.
Preferably, a gas flow control device is arranged on the gas inlet pipe.
The utility model has the advantages that:
the utility model discloses a refining plant of copper alloy casting liquid for copper area lets in gaseous edulcoration through the inlet channel from the bottom of centre package, and simple structure can detach harmful gas and high melting point light inclusion, and the edulcoration is effectual.
Drawings
FIG. 1 is a schematic structural view of a refining apparatus for a copper alloy casting solution for copper strips according to the present invention.
In the figure:
1. casting a holding furnace; 2. a tundish; 21. a lower air intake section; 22. an upper air intake section; 3. an air inlet pipe; 4. a gas flow control device; 5. copper alloy casting liquid; 6. air bubbles; 7. and (4) a covering layer.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a refining device of copper alloy casting solution for copper strips according to the present invention, and as shown in fig. 1, the refining device of copper alloy casting solution for copper strips according to the present invention comprises a casting holding furnace 1 and a tundish 2 which are communicated with each other, wherein an air inlet channel and an air inlet pipe 3 are arranged at the bottom of the tundish 2; the air inlet passage comprises a lower air inlet section 21 and an upper air inlet section 22, the lower air inlet section 21 is an air brick, the upper air inlet section 22 is air permeable sand, the lower air inlet section 21 is communicated with the air inlet pipe 3, and the upper air inlet section 22 is communicated with the inner cavity of the tundish 2.
The working principle is as follows:
when a copper strip is cast with a copper alloy, a copper alloy casting solution 5 which is heated and melted enters the tundish 2 from the casting holding furnace 1, and a coating layer 7 is arranged on the surface of the copper alloy casting solution 5 to prevent the copper alloy casting solution from being oxidized by contacting with air. At the bottom of the tundish 2, nitrogen or argon is introduced into the air inlet pipe 3, the nitrogen or argon enters the upper air inlet section 22 after passing through the air bricks in the lower air inlet section 21, uniform bubbles 6 are formed after being dispersed by the air permeable sand in the upper air inlet section 22 and enter the bottom of the tundish 2, and the uniform bubbles 6 float upwards from the copper alloy casting solution 5 at the bottom of the tundish 2. The bubbles 6 adsorb and drive harmful gases such as oxygen and hydrogen and high-melting-point light inclusions mixed in the copper alloy casting liquid to rise together in the floating process until the harmful gases and the high-melting-point light inclusions rise to a covering layer 7 arranged on the upper surface of the copper alloy casting liquid 5, so that the gases and the high-melting-point light inclusions in the copper alloy casting liquid 5 are removed, and the purity of the copper alloy casting liquid is improved. The impurities floating on the upper surface can be removed when the cover layer 7 is subjected to slag removal.
The utility model discloses a refining plant of copper alloy casting liquid for copper area lets in gaseous edulcoration through the bottom from middle package 2, simple structure, and the edulcoration is effectual. The air brick in the lower air inlet section 21 effectively supports the air sand in the upper air inlet section 22. The air permeable sand in the upper air inlet section 22 can effectively disperse the introduced gas to form fine bubbles, the total surface area of the fine bubbles is large, the contact area with the copper alloy casting solution 5 in the copper alloy casting solution 5 is large, and the adsorption of more harmful gas and impurities is facilitated; and the fine bubbles rise slowly and float for a long time, so that the copper alloy casting liquid 5 can fully contact with the bubbles and impurities are adsorbed, and the adsorption efficiency is improved.
Preferably, the upper air inlet section 22 is in the shape of a horn with a large upper part and a small lower part. The upper air inlet section 22 is arranged in a horn shape, so that the inlet area of the bubbles entering the tundish can be enlarged, and the bubbles are dispersed in the tundish more finely and uniformly; and is more beneficial to the contact and adsorption of the bubbles and the harmful gas in the copper alloy casting liquid 5.
Preferably, the air inlet channels are distributed at the bottom of the tundish 2. The arrangement of the plurality of air inlet channels can remove harmful gases and impurities in the copper alloy casting liquid as clean as possible.
Preferably, a gas flow control device 4 is arranged on the gas inlet pipe 3. Set up gas flow control device 4 and can be according to pouring into high regulation gas flow of 5 of copper alloy casting liquid in middle package 2 to obtain the air current of different pressure, avoid 6 rising of bubble too fast when 5 liquid levels of copper alloy casting liquid are lower, the edulcoration is not clean.
Here, it should be noted that the technical features mentioned above may be combined with each other as long as they do not conflict with each other. The above embodiments are only some embodiments, not all embodiments, and all other embodiments obtained by those skilled in the art without creative work are all included in the protection scope of the present invention.
Claims (4)
1. A refining device of copper alloy casting liquid for copper plates and strips comprises a casting holding furnace and a tundish, wherein the casting holding furnace and the tundish are communicated with each other; the air inlet channel comprises a lower air inlet section and an upper air inlet section, the lower air inlet section is an air brick, the upper air inlet section is air permeable sand, the lower air inlet section is communicated with the air inlet pipe, and the upper air inlet section is communicated with the inner cavity of the tundish.
2. A refining apparatus of a copper alloy casting solution for copper strip as defined in claim 1, wherein said upper intake section is formed in a horn shape having a large upper portion and a small lower portion.
3. The refining apparatus of a copper alloy casting solution for copper strip as defined in claim 1, wherein said plurality of gas inlet passages are uniformly arranged at the bottom of said tundish.
4. The refining apparatus for a copper alloy casting solution for copper strip as defined in claim 1, wherein said gas inlet pipe is provided with a gas flow rate control means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122706039.3U CN216427374U (en) | 2021-11-08 | 2021-11-08 | Refining device of copper alloy casting liquid for copper plate strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122706039.3U CN216427374U (en) | 2021-11-08 | 2021-11-08 | Refining device of copper alloy casting liquid for copper plate strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216427374U true CN216427374U (en) | 2022-05-03 |
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ID=81335253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122706039.3U Active CN216427374U (en) | 2021-11-08 | 2021-11-08 | Refining device of copper alloy casting liquid for copper plate strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216427374U (en) |
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2021
- 2021-11-08 CN CN202122706039.3U patent/CN216427374U/en active Active
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