CN111663049A - Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot - Google Patents
Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot Download PDFInfo
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- CN111663049A CN111663049A CN202010576242.0A CN202010576242A CN111663049A CN 111663049 A CN111663049 A CN 111663049A CN 202010576242 A CN202010576242 A CN 202010576242A CN 111663049 A CN111663049 A CN 111663049A
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/18—Electroslag remelting
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Abstract
The application relates to a cooling device and a method for improving cooling strength of bottom of an electroslag remelting ingot, and relates to the technical field of electroslag remelting. This application can improve the cooling strength to the ingot casting bottom.
Description
Technical Field
The application relates to the technical field of electroslag remelting, in particular to a cooling device and a method for improving cooling strength of the bottom of an electroslag remelting ingot.
Background
Electroslag remelting is a method of melting using resistance heat generated when current passes through slag as a heat source. In electroslag smelting, a slag pool to be melted is arranged above a water-cooled crystallizer, an electrode chuck is adopted to clamp a cylindrical electrode, and the electrode, the slag pool, a metal melting pool, an ingot casting and a bottom water tank can form a current loop through a short-net lead and a transformer. When electroslag smelting is carried out, the end part of the electrode, which is far away from an electrode chuck of the electroslag smelting, is inserted into molten slag, then the electrode is electrified, in the electrifying process, the electrode and a slag pool emit joule heat to melt metal slag in the slag pool, molten metal is converged into liquid state, passes through the slag pool, falls into a crystallizer to form a metal molten pool, and is solidified under the water cooling effect to form an ingot. Before the ingot is solidified, a metal melting pool and a slag pool above the ingot play roles in heat preservation and feeding, and the compactness of the ingot is ensured. In the smelting process, the molten metal is firstly naturally cooled to form a layer of thin slag shell on the inner wall of the crystallizer, and then is cooled by cooling water to be rapidly condensed into an ingot in the thin slag shell, and the thin slag shell not only enables the surface of the ingot to be smooth, but also enables more heat to be conducted downwards, thereby being beneficial to the oriented crystallization of the ingot from bottom to top.
The existing electroslag remelting technology generally cools an ingot casting through a bottom water tank, a water inlet pipe and a water outlet pipe are connected to the side face of the bottom water tank, cooling water is vaporized into steam in the bottom water tank due to the fact that the temperature of the ingot casting is very high, the steam occupies the capacity of the bottom water tank, and therefore cooling strength of the bottom of the ingot casting is low.
Disclosure of Invention
In order to improve the cooling strength of the bottom of the ingot, the application provides a cooling device and a method for improving the cooling strength of the bottom of an electroslag remelting ingot.
In a first aspect, the present application provides a cooling device, which adopts the following technical solutions:
the cooling device comprises a base, a water outlet device fixedly connected to the base, and a connecting column, wherein the interval is formed between the water outlet device and the cooling plate above the water outlet device, the connecting column is fixedly connected with the water outlet device and the cooling plate at two ends respectively, the water outlet device is connected with a water inlet pipe, and the water outlet device sprays water to the cooling plate.
By adopting the technical scheme, the electroslag is naturally cooled on the cooling plate to form the thin slag shell, then the cooling water is introduced into the water outlet device through the water inlet pipe, the water outlet device sprays water to the cooling plate to cool the cooling plate, the ingot casting solidification is accelerated, the cooling water directly flows away from the space between the cooling plate and the water outlet device after taking away heat, the phenomenon that the cooling water is vaporized into steam in the traditional bottom water tank to occupy the capacity of the bottom water tank is avoided, and the cooling strength is improved.
Preferably, a water containing cavity is arranged in the water outlet device, the water inlet pipe is communicated with the water containing cavity, and a plurality of water outlet holes communicated with the water containing cavity are formed in the top of the water outlet device.
Through adopting above-mentioned technical scheme, send into the cooling water through the inlet tube and hold the water cavity of water outlet ware, the cooling water can spout the cooling plate to the top through a plurality of apopores.
Preferably, the plurality of water outlet holes are arranged as tapered holes with small top openings.
Through adopting above-mentioned technical scheme, the apopore sets up to the less bell mouth of open-top, and the velocity of flow when can increasing the cooling water and spout the apopore makes the cooling water blowout height higher to ensure that cooling water can spout on the cooling plate.
Preferably, a plurality of water outlet channels are formed in the water outlet device, one ends of the water outlet channels are arranged in a gathering mode and are communicated with the water inlet pipe, and the other ends of the water outlet channels are distributed at the top of the water outlet device.
Through adopting above-mentioned technical scheme, send into many water outlet channel in the water outlet ware with cooling water through the inlet tube, cooling water can spout the cooling plate of top from many passageways.
Preferably, one end of each of the water outlet channels, which is positioned at the top of the water outlet device, is provided with a tapered opening with a reduced opening.
Through adopting above-mentioned technical scheme, outlet channel's play water one end sets up to the less cone-shaped mouth of opening, and the velocity of flow when can increasing the cooling water blowout makes the cooling water blowout height higher to ensure that cooling water can spout on the cooling plate.
Preferably, a through groove is formed in the end face of one end, fixedly connected with the cooling plate, of the connecting column.
Through adopting above-mentioned technical scheme, the cooling water that goes out the hydrophone spun can get into logical inslot, cools off the fixed connection department of spliced pole and cooling plate to can be more even cool off the cooling plate.
Preferably, two through grooves which are crossed into a cross shape are formed in the end face of one end, fixedly connected with the cooling plate, of the connecting column.
Through adopting above-mentioned technical scheme, set up two cross logical grooves, can get into more cooling water to further increase the cooling effect to cooling plate and spliced pole junction.
In a second aspect, the application provides a method for improving the cooling strength of the bottom of an electroslag remelting ingot, which adopts the following technical scheme:
a method for improving the cooling strength of the bottom of an electroslag remelting ingot, which comprises cooling the bottom of the ingot by using a cooling device as claimed in claims 1 to 7, arranging a cooling plate of the cooling device below a crystallizer, melting a consumable electrode for electroslag remelting in the crystallizer, and spraying cooling water to the bottom of the cooling plate.
Through adopting above-mentioned technical scheme, spout the heat that can take away the ingot casting bottom fast to the cooling water of cooling plate, then flow away downwards fast, cooling strength is strong, and the vapor that generates can not influence the cooling water contact cooling plate moreover.
Preferably, a plurality of cooling water jets are uniformly sprayed to the bottom of the cooling plate.
Through adopting above-mentioned technical scheme, can be to the even cooling of cooling plate to can be to the even cooling of ingot casting.
Preferably, before cooling water is sprayed to the bottom of the cooling plate, a consumable electrode for electroslag remelting is melted in the crystallizer, and then a thin slag shell is formed in the crystallizer through natural cooling.
By adopting the technical scheme, the thin slag shell is beneficial to more heat conduction to the lower part and the directional crystallization of the cast ingot from bottom to top.
Drawings
Fig. 1 is a schematic overall structure diagram of a cooling device in a first embodiment.
Fig. 2 is a sectional view of a cooling device in a first embodiment.
Fig. 3 is a top view of a water outlet device of the cooling device in the first embodiment.
Fig. 4 is a top view of a water outlet device of the cooling device in the second embodiment.
Fig. 5 is a sectional view of the cooling device in the second embodiment.
Reference numerals: 1. a base; 11. a support pillar; 12. a support disc; 2. a water outlet device; 21. a water containing cavity; 22. a water outlet hole; 23. a water outlet channel; 24. a tapered mouth; 3. connecting columns; 31. a through groove; 4. a cooling plate; 41. blocking edges; 5. a water inlet pipe; 6. a water drainage gap.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses a cooling device.
The first embodiment is as follows:
referring to fig. 1, the cooling device comprises a base 1, a water outlet device 2 fixedly connected to the upper end of the base 1, a cooling plate 4 arranged above the water outlet device 2 at intervals, and a connecting column 3 with two ends respectively connected with the water outlet device 2 and the water outlet device 2, wherein the water outlet device 2 is connected with a water inlet pipe 5.
Referring to fig. 1 and 2, the base 1 includes a support pillar 11 vertically disposed and a support plate 12 coaxially welded to a bottom end of the support pillar 11, and the support plate 12 can improve stability of the base 1. Go out the disc-shaped structure of water outlet device 2 for the level setting, the coaxial welding in 2 bottom surfaces of water outlet device in support column 11 top, the vertical setting of spliced pole 3, the coaxial welding in the top surface of water outlet device 2 in its bottom, cooling plate 4 is the circular metal sheet of level setting, the top coaxial welding of 4 bottom surfaces of cooling plate and spliced pole 3, the diameter of water outlet device 2 is not more than the diameter of cooling plate 4. The water outlet device 2 can spray water to the cooling plate 4, so that the temperature of the cooling plate 4 is reduced.
Go out the cavity setting of water outlet device 2, inside forms holds water cavity 21, and inlet tube 5 is connected in 2 bottom surfaces of water outlet device and with hold water cavity 21 intercommunication, has seted up a plurality of apopores 22 on the top surface of water outlet device 2, and the even annular distribution of a plurality of apopores 22 sends into the cooling water through inlet tube 5 and holds water cavity 21 of water outlet device 2 in, and the cooling water can spout cooling plate 4 to the top through a plurality of apopores 22. The water outlet 22 can be a tapered hole with a small top opening, so that the flow speed of the cooling water sprayed out of the water outlet 22 can be increased, the spraying height of the cooling water is higher, and the cooling water can be sprayed onto the cooling plate 4.
Referring to fig. 2 and 3, a through groove 31 is formed in the end face of the top end of the connecting column 3, and cooling water sprayed to the cooling plate 4 can enter and exit from the two ends of the through groove 31 to cool the joint between the connecting column 3 and the cooling plate 4. The through grooves 31 can be formed in the top surface of the connecting column 3 in two cross shapes, so that more cooling water can enter to increase the cooling effect.
Referring to fig. 2, the edge of the cooling plate 4 extends vertically downward to form an annular rib 41, the water outlet 2 is located in the range covered by the cooling plate 4 and the rib 41, and a water drainage gap 6 is left between the water outlet 2 and the rib 41. The rib 41 can block the cooling water sprayed to the cooling plate 4, so that the cooling water flows down along the rib 41 and is discharged from the drainage gap 6, thereby preventing the cooling water from splashing around.
The implementation principle of the embodiment is as follows: the utility model provides a cooling device replaces the end water tank in the electroslag remelting technique, cool off the ingot casting, let in cooling water in to water outlet device 2 through inlet tube 5, water outlet device 2 is to cooling plate 4 water spray, make the cooling plate 4 cooling, the ingot casting solidifies with higher speed, directly flow away between cooling plate 4 and water outlet device 2 from behind the heat is taken away to the cooling water, the problem of explosion has been avoided traditional end water tank too big and cause at cooling process incasement pressure, the security has been improved.
Example two:
referring to fig. 4 and 5, the difference between the first embodiment and the second embodiment is that a plurality of water outlet channels 23 are formed in the water outlet device 2, one ends of the plurality of water outlet channels 23 are collected and communicated with the water inlet pipe 5, and openings at the other ends of the plurality of water outlet channels 23 are vertically arranged upwards and distributed on the top surface of the water outlet device 2. The cooling water is fed through the water inlet pipe 5 into the plurality of water outlet passages 23 in the water outlet means 2, and the cooling water can be sprayed from the plurality of passages toward the upper cooling plate 4. One end of the water outlet channels 23 at the top of the water outlet device 2 can be provided with a tapered opening 24 with a reduced opening, so that the flow speed of the cooling water during spraying can be increased, the spraying height of the cooling water is higher, and the cooling water can be sprayed onto the cooling plate 4.
The embodiment of the application also discloses a method for improving the cooling strength of the bottom of the electroslag remelting ingot, and the cooling method is applied to the cooling device. In the electroslag remelting process, a cooling device is arranged below a crystallizer, a cooling plate 4 is abutted against the crystallizer, a consumable electrode for electroslag remelting is melted in the crystallizer, and then a thin slag shell is formed in the crystallizer through natural cooling; and then cooling water is sprayed to the bottom of the cooling plate 4 through the water outlet device 2 below the cooling plate 4, and the cooling water sprayed by the water outlet device 4 is a water column which is uniformly distributed, so that the cast ingot can be uniformly cooled. The cooling water sprayed to the cooling plate 4 can quickly take away the heat at the bottom of the cast ingot and then quickly flow downwards, so that the cooling effect is strong.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. A cooling device, comprising a base (1), characterized in that: still include water outlet device (2), the interval of fixed connection on base (1) set up in cooling plate (4) and spliced pole (3) of both ends difference fixed connection water outlet device (2) and cooling plate (4) of water outlet device (2) top, be connected with inlet tube (5) on water outlet device (2), water outlet device (2) is to cooling plate (4) water spray.
2. The cooling apparatus according to claim 1, wherein: be provided with in the water outlet device (2) and hold water cavity (21), inlet tube (5) and hold water cavity (21) intercommunication, hold water cavity (21) top and seted up a plurality of apopores (22).
3. The cooling apparatus according to claim 2, wherein: the water outlet holes (22) are arranged to be conical holes with small top openings.
4. The cooling apparatus according to claim 1, wherein: a plurality of water outlet channels (23) are arranged in the water outlet device (2), one ends of the water outlet channels (23) are arranged in a gathering mode and are communicated with the water inlet pipe (5), and the other ends of the water outlet channels are distributed at the top of the water outlet device (2).
5. The cooling apparatus according to claim 4, wherein: one end of each of the water outlet channels (23) positioned at the top of the water outlet device (2) is provided with a tapered opening (24) with a reduced opening.
6. The cooling device according to any one of claims 1 to 5, wherein: the end face of one end of the connecting column (3) fixedly connected with the cooling plate (4) is provided with a through groove (31).
7. The cooling apparatus according to claim 6, wherein: two through grooves (31) which are fixedly connected with the end face of one end of the cooling plate (4) of the connecting column (3) are arranged and crossed into a cross shape.
8. A method for improving the cooling strength of the bottom of an electroslag remelting ingot, characterized in that the bottom of the ingot is cooled by a cooling device as described in claims 1-7, a cooling plate (4) of the cooling device is arranged below a crystallizer, a consumable electrode for electroslag remelting is melted in the crystallizer, and then cooling water is sprayed to the bottom of the cooling plate (4).
9. The method for improving the cooling strength of the bottom of an electroslag remelted ingot according to claim 8, wherein the cooling strength is obtained by the following steps: a plurality of cooling water columns are uniformly sprayed on the bottom (4) of the cooling plate.
10. The method for improving the cooling strength of the bottom of an electroslag remelted ingot according to claim 8, wherein the cooling strength is obtained by the following steps: before cooling water is sprayed to the bottom of the cooling plate (4), the molten metal is naturally cooled to form a thin slag shell in the crystallizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010576242.0A CN111663049B (en) | 2020-06-22 | 2020-06-22 | Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010576242.0A CN111663049B (en) | 2020-06-22 | 2020-06-22 | Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot |
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| Publication Number | Publication Date |
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| CN111663049A true CN111663049A (en) | 2020-09-15 |
| CN111663049B CN111663049B (en) | 2022-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010576242.0A Active CN111663049B (en) | 2020-06-22 | 2020-06-22 | Cooling device and method for improving cooling strength of bottom of electroslag remelting ingot |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280989A (en) * | 2020-10-30 | 2021-01-29 | 河冶科技股份有限公司 | Method for preparing steel ingot of tool and die steel through double-electrode electroslag remelting and electroslag remelting device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436710A (en) * | 2013-09-16 | 2013-12-11 | 河冶科技股份有限公司 | Water-free combined bottom water tank for electroslag remelting |
| CN206858626U (en) * | 2017-06-16 | 2018-01-09 | 江油三丰汽轮机材料有限公司 | A kind of electric slag furnace water cooling system |
| CN207578878U (en) * | 2017-10-18 | 2018-07-06 | 中天精机股份有限公司 | Die device with quick cooling function |
| CN210506472U (en) * | 2019-09-20 | 2020-05-12 | 江苏国镍新材料科技有限公司 | Special device for directional solidification electroslag of nickel-based alloy |
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2020
- 2020-06-22 CN CN202010576242.0A patent/CN111663049B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103436710A (en) * | 2013-09-16 | 2013-12-11 | 河冶科技股份有限公司 | Water-free combined bottom water tank for electroslag remelting |
| CN206858626U (en) * | 2017-06-16 | 2018-01-09 | 江油三丰汽轮机材料有限公司 | A kind of electric slag furnace water cooling system |
| CN207578878U (en) * | 2017-10-18 | 2018-07-06 | 中天精机股份有限公司 | Die device with quick cooling function |
| CN210506472U (en) * | 2019-09-20 | 2020-05-12 | 江苏国镍新材料科技有限公司 | Special device for directional solidification electroslag of nickel-based alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112280989A (en) * | 2020-10-30 | 2021-01-29 | 河冶科技股份有限公司 | Method for preparing steel ingot of tool and die steel through double-electrode electroslag remelting and electroslag remelting device |
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| CN111663049B (en) | 2022-01-25 |
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