CN114226664A - Continuous smelting furnace and ingot casting system with same - Google Patents
Continuous smelting furnace and ingot casting system with same Download PDFInfo
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- CN114226664A CN114226664A CN202111657632.1A CN202111657632A CN114226664A CN 114226664 A CN114226664 A CN 114226664A CN 202111657632 A CN202111657632 A CN 202111657632A CN 114226664 A CN114226664 A CN 114226664A
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- 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
- B22D11/10—Supplying or treating molten metal
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- 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
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
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- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/114—Treating the molten metal by using agitating or vibrating means
- B22D11/115—Treating the molten metal by using agitating or vibrating means by using magnetic fields
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- 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
- B22D11/14—Plants for continuous casting
- B22D11/145—Plants for continuous casting for upward casting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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Abstract
The invention provides a continuous smelting furnace and an ingot casting system with the same, belonging to the technical field of smelting and casting equipment, wherein the continuous smelting furnace comprises: the coreless intermediate frequency induction furnace is provided with at least two coreless intermediate frequency induction furnaces which are arranged in parallel; the submerged flow heat-preserving furnace is connected above the plurality of coreless intermediate frequency induction furnaces which are arranged in parallel, the bottom of the submerged flow heat-preserving furnace is respectively communicated with the upper part of each coreless intermediate frequency induction furnace, a blocking wall is arranged in the submerged flow heat-preserving furnace at the middle position above two adjacent coreless intermediate frequency induction furnaces, and a through hole suitable for molten liquid to pass through is formed in the blocking wall; the continuous smelting furnace is characterized in that a plurality of coreless intermediate frequency induction furnaces are arranged in parallel, the upper ends of the coreless intermediate frequency induction furnaces are communicated through undercurrent heat preservation furnaces, materials are smelted in one coreless intermediate frequency induction furnace, and then are circulated to other coreless intermediate frequency induction furnaces through the undercurrent heat preservation furnaces to be preserved in heat for casting, so that the continuous smelting of the materials is realized.
Description
Technical Field
The invention relates to the technical field of smelting and casting equipment, in particular to a continuous smelting furnace and an ingot casting system with the same.
Background
The microalloyed copper alloy has excellent comprehensive properties of mechanics, electric conduction and heat conduction, corrosion resistance, fatigue resistance and the like, and is widely applied to electric wires and cables, IC lead frame materials, electrified railway contact lines and other fields needing the electric conduction and heat conduction properties of the alloy. These alloying elements are often easily oxidized and infusible during melting, and for example, alloys of CuFe, CuCr, CuTi, CuCrZr and other series are all more ideal high-strength and high-conductivity copper alloy materials, but elements of Ti, Cr, Zr and the like are difficult to melt and easily oxidized.
The common problems of the alloys are that the alloy elements have very high activity, can react with a plurality of elements at the smelting temperature to cause burning loss, and the melt is easy to oxidize, slag and absorb gas. The difficulty is very high and the process is very unstable when the alloy with qualified components is prepared.
At present, except for a gas furnace, in the aspect of electric furnaces, a cored power frequency induction electric furnace is mainly used for smelting copper and alloy industrially, and the furnace type adopts a dumping type or a subsurface type to communicate a smelting furnace and a casting furnace, so that enough copper liquid can be ensured to be always in the casting furnace, and continuous ingot casting production can be realized. The cored power frequency induction furnace heats the metal melt at the melting groove and conducts the metal heat at the melting groove to the melt above, so that the temperature of other parts is lower although the temperature of the melting groove is higher, and the temperature is often difficult to reach over 1200 ℃. Therefore, when some copper alloys containing alloy elements with higher melting points are prepared, the temperature requirement of the cored line frequency induction furnace is difficult to ensure. For example, the series alloys of CuFe, CuCr, CuTi, CuCrZr, etc. are not suitable for production by using a cored industrial frequency induction furnace.
Therefore, at present, coreless intermediate frequency induction furnaces are adopted for smelting the alloys. The induction magnetic field of the coreless intermediate frequency induction furnace permeates into each corner, and the electromagnetic stirring is smooth, so that the heating temperature is uniform, the temperature rising speed is high, and the requirements of smelting and casting temperature are met. However, since the coreless intermediate frequency induction furnace has a problem of coil arrangement, it is impossible to arrange two coreless furnaces in a submerged flow manner, it is difficult to install a mold for horizontal continuous casting, and continuous up-casting and down-casting cannot be performed in a combination of a tilting type. Therefore, at present, the production can only be carried out one by one, the continuity cannot be realized, the single weight of the product is limited, and the yield is low.
Disclosure of Invention
Therefore, the invention aims to overcome the defect that the series of refractory copper alloys such as CuFe, CuCr, CuTi, CuCrZr and the like cannot be continuously smelted in the prior art, thereby providing a continuous smelting furnace capable of realizing continuous production and an ingot casting system with the continuous smelting furnace.
In order to solve the above technical problem, the present invention provides a continuous melting furnace comprising:
the coreless intermediate frequency induction furnace is provided with at least two parallel induction furnaces, wherein at least one induction furnace forms a smelting bin, and at least one induction furnace forms a casting bin;
the undercurrent heat preservation furnace is connected above the plurality of coreless intermediate frequency induction furnaces which are arranged in parallel, and the bottom of the undercurrent heat preservation furnace is respectively communicated with the upper part of each coreless intermediate frequency induction furnace;
the furnace lining of the coreless intermediate frequency induction furnace is continuously built among the coreless intermediate frequency induction furnaces, and the furnace lining of the coreless intermediate frequency induction furnace extends upwards to form the furnace lining of the undercurrent heat preservation furnace;
the undercurrent holding furnace is provided with at least two barrier walls at intervals at the middle position above two adjacent coreless intermediate frequency induction furnaces, through holes suitable for molten liquid to pass through are formed in the barrier walls, and the through holes between the two adjacent barrier walls are arranged in a staggered mode. The arrangement of the through hole can be used for preventing foreign matters in the smelting bin from being dredged to the casting bin, so that the purity of molten liquid in the casting bin is ensured. Through setting up the through-hole dislocation, can avoid smelting in the storehouse the liquation direct impact to the casting storehouse, make the liquation can remove slowly in the casting storehouse to guarantee the stability of liquation temperature and velocity of flow in the casting storehouse, with satisfy the casting requirement more. In addition, through setting up the furnace lining an organic whole, can improve the continuity of furnace lining, avoid appearing the gap, guarantee the stability of holding to the melt.
Optionally, the through holes between two adjacent barrier walls are arranged in a staggered manner in the up-down direction and the left-right direction. Thereby further improving the blocking of the blocking wall to the melt and avoiding the direct impact of the melt.
Optionally, the power of the coreless induction furnace used for forming the smelting bin is greater than the power of the coreless induction furnace used for forming the casting bin. During normal operation, because smelt the storehouse and be used for the smelting of material, consequently need great power, and the casting storehouse is used for keeping warm to the liquation, needs to keep the stability of liquation, and consequently the power that needs is less, through the different needs according to smelting the storehouse and casting the storehouse, sets up different power, can improve energy-conserving effect.
Optionally, the coreless intermediate frequency induction furnace is inductively heated by a water-cooled induction coil arranged around the coreless intermediate frequency induction furnace.
Optionally, the coreless intermediate frequency induction furnace is supported on a frame through a height adjusting piece, and a moving structure is arranged at the bottom of the frame.
Optionally, the adjustment member is a hydraulic cylinder.
Optionally, the moving structure is a roller.
The present invention also provides an ingot casting system comprising: the continuous smelting furnace of any one of the above schemes, wherein a casting machine is erected above the continuous smelting furnace, and the casting machine is communicated with a casting bin of the continuous smelting furnace through an upward guide channel.
The technical scheme of the invention has the following advantages:
1. according to the continuous smelting furnace provided by the invention, the coreless intermediate frequency induction furnaces are arranged in parallel, the upper ends of the coreless intermediate frequency induction furnaces are communicated through the undercurrent heat preservation furnace, materials are smelted in one coreless intermediate frequency induction furnace, and then are circulated to other coreless intermediate frequency induction furnaces through the undercurrent heat preservation furnace to be preserved and cast, so that the materials are continuously smelted under the condition that the smelted materials are not contacted with air all the time.
2. The continuous smelting furnace provided by the invention adopts the coreless intermediate frequency induction furnace for heating, so that molten liquid in the furnace can generate an induction magnetic field, the heating is sufficient, the melting speed is high, the heating temperature is high, the melting requirement of high-melting-point alloy elements is met, the problem of local overheating of a melting groove of the cored induction furnace is avoided, and the production safety is ensured. In addition, a coreless induction mode is adopted, the electromagnetic stirring force is large in extending area, up-and-down stirring can be realized, the alloy components are uniform, and the temperature of the molten alloy is uniform. The coreless intermediate frequency induction furnaces are communicated through the undercurrent holding furnace, and the melt which flows in the undercurrent mode is always protected to prevent oxidation. Through the arrangement of the undercurrent holding furnace, the melting bin and the casting bin are communicated inside, so that alloys of CuFe, CuCr, CuTi, CuCrZr and the like can be continuously smelted.
3. According to the continuous smelting furnace provided by the invention, the blocking wall and the through hole are arranged in the undercurrent heat preservation furnace, so that the molten liquid moves from the smelting bin to the casting bin through the through hole, and the molten liquid in the smelting bin is prevented from greatly influencing the temperature in the casting bin.
4. According to the continuous smelting furnace provided by the invention, the molten liquid is conveyed between the two adjacent barrier walls through the through holes arranged in a staggered manner, so that when the molten liquid moves from the smelting bin to the casting bin, the impact on the flow and the temperature in the casting bin can be avoided, the environment in the casting bin is ensured to be stable, and the casting effect is ensured. In addition, the continuous smelting furnace provided by the invention has a compact integral structure, is easy to cover molten liquid, and ensures that the molten liquid is always protected to prevent oxidation; when repairing or dismantling, can empty all melts through the mode of empting, it is comparatively convenient to operate.
5. The ingot casting system provided by the invention can realize continuous casting production of the casting machine by melting through one or more coreless intermediate frequency induction furnaces, casting through the other one or more coreless intermediate frequency induction furnaces, enabling molten liquid to be always in the casting bin through the undercurrent holding furnace and matching with the upward guide channel.
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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a front view of an embodiment of a continuous melting furnace provided in an example of the present invention.
FIG. 2 is a front sectional view of the continuous melting in FIG. 1.
Fig. 3 is a top view of fig. 2.
Description of reference numerals:
1. a continuous smelting furnace; 2. a casting machine; 3. a coreless intermediate frequency induction furnace; 4. a smelting bin; 5. a casting bin; 6. an undercurrent holding furnace; 7. an upward leading channel; 8. a barrier wall; 9. a through hole; 10. a furnace lining; 11. a water-cooled induction coil; 12. a frame; 13. a moving structure; 14. an adjusting member.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The ingot casting system provided by the embodiment can be used for continuous smelting and ingot casting of alloys of CuFe, CuCr, CuTi, CuCrZr and the like.
As shown in fig. 1, a specific embodiment of the ingot casting system provided in this embodiment includes: the continuous smelting furnace 1 comprises two coreless intermediate frequency induction furnaces 3 arranged in parallel, one coreless intermediate frequency induction furnace 3 is provided with a smelting bin 4 for smelting, and the other coreless intermediate frequency induction furnace 3 is provided with a casting bin 5 for heat preservation. The casting machine 2 is communicated with the casting bin 5 through an upward channel 7. The continuous smelting furnace 1 further includes: the submerged flow heat preservation furnace 6 is connected above the two coreless intermediate frequency induction furnaces 3 which are arranged in parallel, the bottom of the submerged flow heat preservation furnace 6 is communicated with the upper part of each coreless intermediate frequency induction furnace 3, a blocking wall 8 is arranged in the middle of the upper part of each two adjacent coreless intermediate frequency induction furnaces 3 of the submerged flow heat preservation furnace 6, and a through hole 9 suitable for molten liquid to pass through is formed in each blocking wall 8.
In the ingot casting system provided by the embodiment, a coreless intermediate frequency induction furnace 3 is used for melting, another coreless intermediate frequency induction furnace 3 is used for preserving heat for casting, then a submerged flow heat preservation furnace 6 is used for enabling molten liquid to be always present in a casting bin 5, and an upward guide channel 7 is matched, so that continuous casting production of a casting machine 2 can be realized. The continuous smelting furnace 1 adopts the coreless intermediate frequency induction furnace 3 to heat, can enable the melt in the furnace to generate an induction magnetic field, has sufficient heating and high melting speed, meets the melting requirement of high-melting-point alloy elements, can avoid the problem of overheating of a melting channel of the cored induction furnace, and ensures the production safety. In addition, a coreless induction mode is adopted, the electromagnetic stirring force is large in extending area, up-and-down stirring can be realized, the alloy components are uniform, and the temperature of the molten alloy is uniform. The coreless intermediate frequency induction furnaces 3 are communicated through the undercurrent holding furnace 6, so that the melting bin and the casting bin 5 are communicated inside, the molten liquid is always protected, and oxidation is prevented.
In addition, as an alternative embodiment, the coreless intermediate frequency induction furnace 3 may be provided in plurality, a plurality of coreless intermediate frequency induction furnaces 3 may be used for melting, and/or a plurality of coreless intermediate frequency induction furnaces 3 may be used for insulation casting.
As shown in fig. 2 and fig. 3, in the ingot casting system provided by this embodiment, the blocking walls 8 of the continuous melting furnace 1 have at least two blocking walls arranged at intervals, and the through holes 9 between two adjacent blocking walls 8 are arranged in a staggered manner. Specifically, the through holes 9 between two adjacent barrier walls 8 are arranged in a staggered manner in the up-down direction and the left-right direction. Carry the melt through the through-hole 9 of dislocation set between two adjacent barrier walls 8, when making the melt remove to casting storehouse 5 from smelting storehouse 4, can avoid the impact to flow and temperature in the casting storehouse 5, guarantee the environmental stability in the casting storehouse 5 to guarantee the casting effect. In addition, the continuous smelting furnace 1 provided by the invention has a compact integral structure, is easy to cover molten liquid, and ensures that the molten liquid is always protected to prevent oxidation; when repairing or dismantling, can empty all melts through the mode of empting, it is comparatively convenient to operate. In addition, as an alternative embodiment, the through holes 9 for delivering the melt between two adjacent barrier walls 8 may be only shifted up and down, or only shifted left and right.
As shown in fig. 2, in the continuous melting furnace 1 of the ingot casting system according to the present embodiment, the lining 10 of the coreless intermediate frequency induction furnace 3 is continuously built between the plurality of coreless intermediate frequency induction furnaces 3, and the lining 10 of the coreless intermediate frequency induction furnace 3 extends upward to form the lining 10 of the submerged current holding furnace 6. Thus, the molten metal is contained and conveyed, wherein the furnace lining 10 is preferably built by zircon sand, aluminum sand or magnesia sand.
In the continuous melting furnace 1 of the ingot casting system provided in this embodiment, since the melting bin 4 of the coreless intermediate frequency induction furnace 3 is mainly used for melting, the required temperature is high, and the power of the coreless intermediate frequency induction furnace 3 used for forming the melting bin 4 is high; in addition, because the casting bin 5 of the coreless intermediate frequency induction furnace 3 is mainly used for heat preservation to be cast, the power of the coreless intermediate frequency induction furnace 3 for constituting the casting bin 5 is small, thereby keeping the temperature in the casting bin 5 more stable.
As shown in fig. 2, in the continuous melting furnace 1 of the ingot casting system provided by this embodiment, the coreless intermediate frequency induction furnace 3 is inductively heated by the water-cooled induction coil 11 arranged around, so that the temperature of the induction coil is reduced by the water-cooled structure, and overheating of the induction coil due to long-time operation is avoided.
As shown in fig. 2, in the continuous melting furnace 1 of the ingot casting system provided in the present embodiment, the coreless intermediate frequency induction furnace 3 is supported on a frame 12 by a height adjusting member 14, and a moving structure 13 is provided at the bottom of the frame 12. In particular, the adjusting member 14 may be a hydraulic cylinder, and the moving structure 13 may be a roller. The levelness of the continuous smelting furnace 1 can be adjusted through the height adjusting piece 14, so that the continuous smelting furnace is suitable for more ground conditions, and the safety of continuous smelting and ingot casting is ensured. The continuous melting furnace 1 can be moved by the roller, so that the continuous melting furnace 1 can be conveniently moved to a maintenance place for maintenance or the continuous melting furnace 1 can be transferred.
In addition, as an alternative embodiment, the adjusting member 14 may also adopt other lifting devices besides a hydraulic cylinder, such as an electric push rod and the like. The rollers may also be provided with other moving structures 13 such as rails.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (8)
1. A continuous smelting furnace, comprising:
the coreless intermediate frequency induction furnace (3) is provided with at least two parallel arranged furnaces, wherein at least one furnace forms a smelting bin (4) and at least one furnace forms a casting bin (5);
the undercurrent heat preservation furnace (6) is connected above the plurality of coreless intermediate frequency induction furnaces (3) which are arranged in parallel, the bottom of the undercurrent heat preservation furnace (6) is communicated with the upper part of each coreless intermediate frequency induction furnace (3), the furnace lining of each coreless intermediate frequency induction furnace (3) is built among the plurality of coreless intermediate frequency induction furnaces (3) continuously, and the furnace lining of each coreless intermediate frequency induction furnace (3) extends upwards to form the furnace lining of each undercurrent heat preservation furnace (6);
the undercurrent holding furnace (6) is provided with at least two barrier walls (8) at intervals at the middle position above two adjacent coreless intermediate frequency induction furnaces (3), through holes (9) suitable for molten liquid to pass through are formed in the barrier walls (8), and the through holes (9) between the adjacent barrier walls (8) are arranged in a staggered mode.
2. The continuous smelting furnace according to claim 2, characterized in that the through holes (9) between two adjacent blocking walls (8) are arranged offset in both up-down and left-right directions.
3. The continuous smelting furnace according to claim 1, characterized by the fact that the power of the coreless induction furnace (3) constituting the smelting bin (4) is greater than the power of the coreless induction furnace (3) constituting the casting bin (5).
4. The continuous smelting furnace according to claim 1, characterized by the coreless induction furnace (3) being induction heated by means of water-cooled induction coils (11) arranged around it.
5. The continuous smelting furnace according to any of the claims 1-4, characterized by the coreless induction furnace (3) being supported on a frame (12) by means of height adjustment (14), the bottom of the frame (12) being provided with a moving structure (13).
6. The continuous smelting furnace according to claim 5, characterized by the adjusting elements (14) being hydraulic cylinders.
7. The continuous smelting furnace according to claim 5, characterized by the moving structure (13) being a roller.
8. An ingot casting system, comprising: the continuous smelting furnace (1) according to any one of claims 1 to 7, having a casting machine (2) erected above the continuous smelting furnace (1), the casting machine (2) communicating with a casting bin (5) of the continuous smelting furnace (1) through an up-draw channel (7).
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| CN2884104Y (en) * | 2005-10-08 | 2007-03-28 | 刘瑞 | Integrated furnace for smelting and temp.-keeping |
| CN201062921Y (en) * | 2007-06-07 | 2008-05-21 | 泰兴市圣达铜业有限公司 | Energy-saving undercurrent type up-leading continuous casting power frequency influence combined electric furnace |
| CN101502872A (en) * | 2009-03-11 | 2009-08-12 | 上海康成铜材有限公司 | Shortened method for producing oxygen-free copper belt |
| CN201603865U (en) * | 2010-02-23 | 2010-10-13 | 宝山钢铁股份有限公司 | T type tundish adopting flow control device in form of 'two retaining walls and two retaining dams' |
| RU2010135378A (en) * | 2010-08-26 | 2012-03-10 | Российская Федерация, от имени которой выступает Министерство промышленности и торговли Российской Федерации (Минпромторг России) (RU) | CONSTRUCTION OF A DOUBLE BUCKET WITH CAMERAS FOR PLASMA HEATING OF LIQUID METAL |
| CN102078957A (en) * | 2010-12-24 | 2011-06-01 | 莱芜钢铁股份有限公司 | Continuous casting tundish for improving cleanliness of molten steel |
| CN202517020U (en) * | 2012-02-20 | 2012-11-07 | 绍兴市力博电气有限公司 | Novel upward continuous casting furnace |
| US20140360694A1 (en) * | 2012-03-06 | 2014-12-11 | Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | Continuous casting method and continuous casting device for titanium ingots and titanium alloy ingots |
| CN103203439A (en) * | 2013-04-15 | 2013-07-17 | 东又悦（苏州）电子科技新材料有限公司 | Up-draw process oxygen-free copper rod continuous casting 'T'-type smelting furnace |
| CN203209646U (en) * | 2013-04-22 | 2013-09-25 | 黎道安 | Horizontal continuous casting processing device for duplex-metal composite material |
| CN205784553U (en) * | 2016-06-28 | 2016-12-07 | 芜湖楚江合金铜材有限公司 | A kind of Novel copper alloy smelting-casting equipment |
| CN106498180A (en) * | 2016-12-06 | 2017-03-15 | 江西广信新材料股份有限公司 | A kind of process units of high-purity oxygen-free copper ingot blank and method |
| CN108746520A (en) * | 2018-08-27 | 2018-11-06 | 南京科砬世益新材料科技有限公司 | Incude furnace system and production technology |
| CN113547092A (en) * | 2021-07-22 | 2021-10-26 | 江阴金属材料创新研究院有限公司 | Multi-element copper alloy up-drawing furnace and up-drawing casting method |
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