CN210796530U - Tundish for purifying metal melt through micro-bubbles - Google Patents
Tundish for purifying metal melt through micro-bubbles Download PDFInfo
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- CN210796530U CN210796530U CN201921773648.7U CN201921773648U CN210796530U CN 210796530 U CN210796530 U CN 210796530U CN 201921773648 U CN201921773648 U CN 201921773648U CN 210796530 U CN210796530 U CN 210796530U
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- tundish
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- slit base
- metal melt
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Abstract
The utility model discloses a through middle package of micro-bubble purification metal melt belongs to powder metallurgy technical field. The vacuum atomizing furnace is a tundish consisting of a furnace lining, a heat-insulating layer and an outer lining, wherein a slit base is arranged at the bottom of the tundish, a plurality of vent holes are formed in the slit base, an air inlet pipe is arranged below the slit base, a melt flow guide pipe is arranged at the central part of the slit base, and the melt flow guide pipe penetrates through the inner lining, the heat-insulating layer and the outer lining to enter a vacuum atomizing chamber. The device has the characteristics of simple structure and reasonable design, utilizes the vent hole on the slit base to fill inert gas into the melt in the tundish to form micro bubbles, so that impurities (slag) of the melt float upwards to form a slag layer, so that the melt below is cleaner, and at the last stage of atomization, the metal melt is purified, and finally the cleanliness of metal powder is improved.
Description
Technical Field
The utility model belongs to the technical field of powder metallurgy, especially, relate to a tundish for reducing lower sediment, purifying atomizing metal melt and finally improving the metal powder cleanliness factor.
Background
Metal powders are currently commonly produced by gas atomization and water atomization. The cleanliness of the molten metal directly results in the cleanliness of the metal powder. The refractory material is dissolved in the metal melt in the metal smelting process, and the metal melt is atomized along with the slag in the later stage of atomization without means and measures in the atomization process of high-pressure inert gas flow or high-pressure and ultrahigh-pressure water flow, so that the quality of metal powder is seriously deteriorated finally. Therefore, in order to improve the cleanliness of the metal powder, the metal melt must be controlled before being atomized, so that the probability of impurities entering the atomization process is inhibited and reduced.
At present, both domestic and foreign documents and patents improve the cleanliness of metal melts by selecting high-quality metal raw materials or refining means and measures in the metal smelting process, but the problems that the metal melts are polluted in middle coating or refractory materials of the middle coating are dissolved into the metal melts cannot be fundamentally solved.
In order to solve the problems, the invention provides a tundish for reducing slag, purifying atomized metal melt and finally improving the cleanliness of metal powder based on optimizing a tundish structure through which the metal melt flows before atomization.
Disclosure of Invention
The utility model aims at providing a reduce the content of impurity (slag) in the metal melt in the middle package to purify the metal melt, improve metal powder's cleanliness factor.
The utility model discloses an adopt such technical scheme to realize: a tundish for purifying metal melt by micro-bubbles is characterized in that a slit base is arranged at the bottom of the tundish, a plurality of vent holes are formed in the slit base, inert gas is filled into the melt in the tundish through a gas inlet pipe by the vent holes to form micro-bubbles, impurities (slag) of the melt float upwards to form a slag layer, and the slag layer is retained at the bottom of the tundish through controlling the flow or the liquid level height so as to achieve the purpose that the melt below is cleaner.
The structure is as follows: a tundish for purifying metal melt by micro-bubbles is composed of furnace liner, insulating layer and casing, a slit base with several air holes, an air inlet tube under said slit base, a melt flow guiding tube in the central position of said slit base, and a vacuum atomizing chamber.
The slit base is formed by knotting or prefabricating refractory materials.
The vent hole is a slit or a round hole, and the width of the slit or the diameter of the round hole is less than or equal to 0.3 mm.
The furnace lining is made of refractory materials.
The heat-insulating layer is made of refractory cotton, glass fiber or mineral (rock) cotton and other high-temperature-resistant heat-insulating materials.
The outer lining is made of refractory materials.
The refractory material is common refractory materials such as fused magnesia or alumina.
The beneficial effects of the utility model
Compared with the prior art, the utility model, simple structure has, reasonable in design's characteristics, utilize the slit base to have a plurality of air vent, a plurality of air vent passes through the intake pipe and fills into inert gas in to the fuse-element in the middle package, form the microbubble, make impurity (slag) of fuse-element float upwards, constitute the slagging scorification layer, the slagging scorification layer is through control flow or liquid level height, be detained in the bottom of middle package, it is cleaner to reach the following fuse-element, in last stage of atomizing, thereby purify the metal melt, finally improve metal powder's cleanliness factor.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall cross-sectional structure of the present invention.
In the figure: 1. a housing; 2. a heat-insulating layer; 3. a furnace lining; 4. a slit base; 5. a vent hole; 6. an air inlet pipe; 7. and a flow guide pipe.
The present invention will be further described with reference to the accompanying drawings.
Detailed Description
Example 1
As shown in FIG. 1: a tundish for purifying metal melt through micro-bubbles is a tundish consisting of a furnace shell 1, a heat-insulating layer 2 and an outer lining 3, wherein a slit base 4 is arranged at the bottom of the tundish, a plurality of vent holes 5 are formed in the slit base 4, an air inlet pipe 6 is arranged below the slit base 4, a melt flow guide pipe 7 is arranged at the center of the slit base 4, the peripheries of the slit base 4 and the furnace lining 3 are filled with refractory materials, and the melt flow guide pipe 7 penetrates through the furnace lining 3, the heat-insulating layer 2 and the shell 1 to enter a vacuum atomization chamber.
Example 2
A tundish for purifying metal melt by micro bubbles is a round table or a cylinder.
The slit base 4 is made of refractory materials by knotting or prefabricating.
The vent holes 5 are slits or round holes, and the width of the slits or the diameter of the round holes is less than or equal to 0.3 mm.
The furnace lining 3 is made of refractory materials.
The heat-insulating layer 2 is made of refractory cotton, glass fiber or mineral (rock) cotton and other high-temperature-resistant heat-insulating materials.
The shell 1 is made of refractory materials.
The refractory material is common refractory materials such as fused magnesia or alumina.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (7)
1. A tundish for purifying a metal melt by fine bubbles, characterized in that: the vacuum atomization furnace comprises a furnace lining (3), a heat preservation layer (2) and a casing (1), wherein a slit base (4) is arranged at the bottom of the tundish, a plurality of vent holes (5) are formed in the slit base (4), an air inlet pipe (6) is arranged below the slit base (4), a melt flow guide pipe (7) is arranged at the center of the slit base (4), the slit base (4) and the periphery of the furnace lining (3) are filled with refractory materials, and the melt flow guide pipe (7) penetrates through the furnace lining (3), the heat preservation layer (2) and the casing (1) to enter a vacuum atomization chamber.
2. A tundish for purifying a metal melt by microbubbles as recited in claim 1, wherein: the tundish is in a circular truncated cone shape or a cylindrical shape.
3. A tundish for purifying a metal melt by microbubbles as recited in claim 1, wherein: the slit base (4) is formed by knotting or prefabricating refractory materials.
4. A tundish for purifying a metal melt by microbubbles as recited in claim 1, wherein: the vent hole (5) is a slit or a round hole, and the width of the slit or the diameter of the round hole is less than or equal to 0.3 mm.
5. A tundish for purifying a metal melt by microbubbles as recited in claim 1, wherein: the heat-insulating layer (2) is made of refractory cotton, glass fiber or mineral wool high-temperature-resistant heat-insulating material.
6. A tundish for purifying a metal melt by microbubbles as recited in claim 1, wherein: the furnace lining (3) and the shell (1) are made of refractory materials.
7. A tundish for purifying a metal melt by microbubbles as recited in claim 1, wherein: the refractory material is fused magnesia or alumina.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921773648.7U CN210796530U (en) | 2019-10-22 | 2019-10-22 | Tundish for purifying metal melt through micro-bubbles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921773648.7U CN210796530U (en) | 2019-10-22 | 2019-10-22 | Tundish for purifying metal melt through micro-bubbles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210796530U true CN210796530U (en) | 2020-06-19 |
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ID=71232181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921773648.7U Active CN210796530U (en) | 2019-10-22 | 2019-10-22 | Tundish for purifying metal melt through micro-bubbles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210796530U (en) |
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2019
- 2019-10-22 CN CN201921773648.7U patent/CN210796530U/en active Active
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