CN110592455A - Preparation method of copper-tungsten alloy and copper-tungsten alloy prepared by same - Google Patents
Preparation method of copper-tungsten alloy and copper-tungsten alloy prepared by same Download PDFInfo
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Abstract
The invention relates to a preparation method of a copper-tungsten alloy and the copper-tungsten alloy prepared by the method, belonging to the technical field of tungsten-based composite materials. The invention provides a preparation method of a copper-tungsten alloy, which comprises the following steps: carrying out aluminothermic self-propagating reaction on the uniformly mixed copper oxide, tungsten oxide, aluminum powder and slag former to obtain a high-temperature melt, separating gold slag to obtain an alloy melt, cooling and deslagging to obtain a copper-tungsten alloy blank; and carrying out vacuum magnetic suspension induction melting on the copper-tungsten alloy blank, cooling and deslagging to obtain the copper-tungsten alloy. The method obtains the copper-tungsten alloy blank through thermite self-propagating reaction, can uniformly mix copper and tungsten melt generated in situ at high temperature, is beneficial to effectively separating the copper-tungsten alloy melt from reducing slag, and can promote alumina and other inclusions to float upwards by using a large enough Lorentz force generated by magnetic suspension, so that the inclusions are effectively removed, and the defect of inclusion in materials is reduced.
Description
Technical Field
The invention relates to a preparation method of a copper-tungsten alloy and the copper-tungsten alloy prepared by the method, belonging to the technical field of tungsten-based composite materials.
Background
Tungsten copper (W-Cu) integrates the advantages of metal tungsten and metal copper, has the advantages of high temperature resistance, high strength, arc ablation resistance, high density, proper electric conductivity and heat conductivity and the like, and is widely applied to the industries of aerospace, power electronics, metallurgical machinery and the like. Because the melting point of W is very high, the W-Cu composite material can only be prepared by a powder metallurgy method.
The powder metallurgy method for preparing the W-Cu composite material is commonly used in the following three methods: high temperature liquid phase sintering process, activated liquid phase sintering process, infiltration process. The production process of the high-temperature liquid phase sintering method is simple and easy to control, but the sintering temperature is higher, the sintering time is long, the sintering density is low, and the performance is poor. The activation liquid phase sintering method reduces the sintering temperature, shortens the sintering time and greatly improves the sintering density; but the addition of the activator significantly reduces the electrical and thermal conductivity of the material. The infiltration method is the most widely applied method in the traditional preparation of the W-Cu material, and can prepare the W-Cu material with high density and good electric and heat conductivity. However, the W — Cu material prepared by this method requires machining to remove excess metal copper after infiltration, requires subsequent machining, reduces yield, and is not suitable for the preparation of parts having very complicated shapes. And the copper powder and the tungsten powder which are expensive are adopted as raw materials, so that the production cost is high.
Therefore, a novel preparation method of the copper-tungsten alloy with simple process and low production cost is developed, and the method has important significance for popularization and application of the copper-tungsten alloy in the industries of aerospace, power electronics, metallurgical machinery and the like.
Disclosure of Invention
The first purpose of the invention is to provide a preparation method of copper-tungsten alloy, which is beneficial to obtaining copper-tungsten alloy with higher density.
The second purpose of the invention is to provide a copper-tungsten alloy.
A preparation method of a copper-tungsten alloy comprises the following steps:
(1) carrying out aluminothermic self-propagating reaction on the uniformly mixed copper oxide, tungsten oxide, aluminum powder and slag former to obtain a high-temperature melt, separating gold slag to obtain an alloy melt, cooling and deslagging to obtain a copper-tungsten alloy blank;
(2) and (2) carrying out vacuum magnetic suspension induction smelting on the copper-tungsten alloy blank obtained in the step (1), and cooling and deslagging to obtain the copper-tungsten alloy.
It can be understood that the copper oxide, the tungsten oxide and the slag former are dried at the temperature of 150-300 ℃ for 12-48 hours.
It can be understood that the copper oxide, the tungsten oxide, the aluminum powder and the slagging agent are uniformly mixed in a way that the mixture is ball-milled on a ball mill for 1-6 hours in a mixing tank.
It is understood that the thermite self-propagating reaction may be initiated with an open flame of magnesium metal powder. The thermite self-propagating reaction may be carried out in a graphite reactor.
It will be appreciated that the vessel for gold dross separation may be a graphite crucible.
The gold slag separation can be carried out under the action of electromagnetic stirring, and the preferred electromagnetic field frequency is more than 1000 Hz. Further preferably 1000 to 2500 Hz.
The particle size of the copper oxide is preferably 100 to 200 mesh.
The particle size of the tungsten oxide is preferably 100 to 200 mesh.
The granularity of the aluminum powder is preferably less than or equal to 100 meshes.
The granularity of the slag former is preferably less than or equal to 100 meshes.
In the aluminothermic self-propagating reaction process, sufficient heat can be generated when the aluminum powder reacts with the metal oxide to melt and separate reduced metal and formed slag to obtain metal or alloy; but because the reaction system is heated and cooled rapidly, a small amount of impurities exist in the prepared alloy.
In the smelting process of the vacuum magnetic suspension smelting technology (VMLM), molten metal is in a suspension state, and the inclusion can be promoted to float upwards by the Lorentz force generated by magnetic suspension, so that the inclusion in the alloy can be effectively removed; meanwhile, because the alloy is rapidly cooled in a water-cooled copper crucible after smelting, the alloy has more uniform components and less segregation.
The preparation method of the copper-tungsten alloy of the invention directly takes copper oxide, tungsten oxide and aluminum powder as raw materials, copper-tungsten alloy blanks are obtained by thermit self-propagating reaction and gold slag separation, the instantaneous high temperature (up to more than 3000 ℃) generated in the thermit self-propagating reaction process can lead copper and tungsten melt generated in situ to be evenly mixed at high temperature, a slagging agent adsorbs alumina to form reducing slag, meanwhile, the generated instantaneous high temperature is beneficial to the effective separation of the copper-tungsten alloy melt and the reducing slag, the copper-tungsten alloy blanks are processed by vacuum magnetic suspension induction melting, the copper-tungsten alloy is obtained after cooling and deslagging, the adequate Lotzian force generated by magnetic suspension can promote alumina and other inclusions to float upwards, thereby effectively removing the inclusions, reducing the defects of material inclusion, and the obtained purified and cooled copper-tungsten alloy has higher density, more even components and less segregation, the operation process is simple, and compared with copper powder and tungsten powder, the copper oxide and tungsten oxide are low in price and low in production cost.
The weight ratio of the tungsten element in the tungsten oxide to the copper element in the copper oxide is adjusted according to the weight ratio of the tungsten element to the copper element in the copper-tungsten alloy prepared as required, and in order to enable the mass percentage content of the copper element in the copper-tungsten alloy to be in the range of 6.0-50.0%, preferably, in the step (1), the weight ratio of the copper element in the copper oxide to the tungsten element in the tungsten oxide is 1: 1.1-15.5.
In order to further control the cost and reduce the residual of aluminum, the molar ratio of the aluminum element in the aluminum powder to the oxygen element in the copper oxide and the tungsten oxide in step (1) is preferably 1: 1.58-2.0.
In order to adsorb the alumina product of the thermite self-propagating reaction and control the cost, in the step (1), the weight ratio of the total weight of the copper oxide, the tungsten oxide and the aluminum powder to the slagging constituent is preferably 11-25: 1.
Preferably, in step (1), the tungsten oxide is WO3And/or WO2。
Preferably, in the step (1), the copper oxide is CuO and/or Cu2O。
Preferably, in the step (1), the slag former is CaO. The melting point of reducing slag formed by combining CaO and alumina generated by aluminothermic self-propagating reaction is far lower than that of alumina, so that the method is not only favorable for adsorbing the alumina, but also favorable for separating slag.
Preferably, in the step (2), the vacuum degree of the vacuum magnetic suspension induction melting is 10-5～10-2Pa. The vacuum magnetic suspension induction melting under the vacuum condition is favorable for reducing the content of gas and volatile impurities in the copper-tungsten alloy and improving the density of the copper-tungsten alloy.
Preferably, in the step (2), the current of the vacuum magnetic suspension induction melting is 1.6-5.6A. When the current of vacuum magnetic suspension induction melting is 1.6-5.6A, the melting of the metal cast ingot is ensured.
Preferably, the voltage of the vacuum magnetic suspension induction melting is 4000-9000V. When the voltage of vacuum magnetic suspension induction melting is 4000-9000V, the melting of metal cast ingots is more favorably ensured.
Preferably, in the step (2), the time of the vacuum magnetic suspension induction melting is 20-30 min. The time of vacuum magnetic suspension induction melting is 20-30 min, which is beneficial to considering both cost and efficiency.
Preferably, in the step (2), the cooling speed is 80-120 ℃/s. The cooling speed is 80-120 ℃/s, which is beneficial to reducing element segregation in the alloy and tissue homogenization.
A copper-tungsten alloy is prepared by adopting a preparation method of the copper-tungsten alloy.
The mass percentage content of copper element in the copper-tungsten alloy prepared by the preparation method of the copper-tungsten alloy is 6.0-50.0%, the copper-tungsten alloy has uniform components, high compactness and less impurities, the content of Al is below 0.42%, the performance of the copper-tungsten alloy cannot be influenced by the aluminum with the content, the sum of other impurities is below 0.5%, and the copper-tungsten alloy has good comprehensive performance.
Drawings
FIG. 1 is a metallographic structure of a copper-tungsten alloy blank obtained by separating gold slag in step (2) in example 1;
FIG. 2 is a metallographic structure of a copper-tungsten alloy obtained by melting in step (3) of example 1;
FIG. 3 is a metallographic structure of a copper-tungsten alloy billet obtained by separating gold slag in step (2) in example 4;
fig. 4 shows the metallographic structure of the copper-tungsten alloy obtained by melting in step (3) in example 4.
Detailed Description
The present invention will be further described with reference to the following embodiments.
The purity of the CuO powder adopted in the embodiment of the invention is more than or equal to 99.5%, and the granularity is 100-200 meshes.
WO used in examples of the present invention3The purity of the powder is more than or equal to 99.5%, and the granularity is 100-200 meshes.
The purity of the slag former CaO adopted in the embodiment of the invention is more than or equal to 99.5 percent, and the granularity is less than or equal to 100 meshes.
The purity of the Al powder adopted in the embodiment of the invention is more than or equal to 99.5 percent, and the granularity is less than or equal to 100 meshes.
The electromagnetic field for separating the gold slag in the embodiment of the invention is an induced electromagnetic field formed by an induction coil of an intermediate frequency induction furnace during heating, and the frequency of the electromagnetic field during action is 1000-2500 Hz.
The reactor used in the examples of the present invention was a graphite reactor.
The specific embodiment of the preparation method of the copper-tungsten alloy of the invention is as follows:
example 1
The preparation method of the copper-tungsten alloy of the embodiment comprises the following steps
(1) Drying of the material
Mixing CuO powder and WO3And (3) placing the powder and a slag former CaO into a constant-temperature drying oven for drying at 220 ℃ for 16h to obtain a dried material.
(2) Thermite self-propagating reaction
Weighing the dried materials according to the mixture ratio of CuO powder to WO3The powder, CaO powder and aluminum powder are weighed according to the weight ratio of 100: 1564: 83: 355, and the total weight of the materials is 10 kg; then mixing the mixture for 2 hours on a ball mill, putting the mixture into a graphite crucible reactor, putting 5g of metal magnesium powder on the surface layer of the top of the graphite crucible reactor, igniting the metal magnesium powder by open fire to initiate the aluminothermic self-propagating reaction of the mixed material to obtain the copper-tungsten alloy and Al2O3-a high temperature melt of CaO reducing slag; and then casting the high-temperature melt into a graphite crucible, separating gold and slag from the high-temperature melt under the action of gravity and an electromagnetic field, wherein the frequency of the electromagnetic field is 1500Hz, and removing the upper-layer reducing slag after cooling to obtain the copper-tungsten alloy blank.
(3) Vacuum magnetic suspension induction melting
Placing the copper-tungsten alloy blank obtained in the step (2) in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace, and enabling the vacuum degree to reach 10-2And Pa, melting the raw materials under the conditions of 7500V and 3.6A, then carrying out magnetic suspension smelting purification for 20min, and floating the inclusions to the surface layer. After the vacuum magnetic suspension induction melting is finished, cooling to room temperature in a water-cooled copper crucible at the speed of 80 ℃/s, removing inclusions after cooling, and obtaining the purified and rapidly-cooled copper-tungsten alloy, wherein the mass fraction of Al and each component in the copper-tungsten alloy is as follows: 0.11% of Al, 8.3% of Cu and the balance of tungsten.
Example 2
The preparation method of the copper-tungsten alloy of the embodiment comprises the following steps
(1) Drying of the material
Mixing CuO powder and WO3And (3) placing the powder and a slag former CaO into a constant-temperature drying oven for drying at the drying temperature of 250 ℃ for 26 hours to obtain a dried material.
(2) Thermite self-propagating reaction
Weighing the dried materials according to the mixture ratio of CuO powder to WO3The powder, CaO powder and aluminum powder are weighed according to the weight ratio of 100: 1050: 56: 228, and the total weight of the materials is 10 kg; then mixing the mixture for 3 hours on a ball mill, putting the mixture into a graphite crucible reactor, putting 5g of metal magnesium powder on the surface layer of the top of the graphite crucible reactor, igniting the metal magnesium powder by open fire to initiate the aluminothermic self-propagating reaction of the mixed material to obtain the copper-tungsten alloy and Al2O3-a high temperature melt of CaO reducing slag; and then casting the high-temperature melt into a graphite crucible, separating gold and slag from the high-temperature melt under the action of gravity and an electromagnetic field, wherein the frequency of the electromagnetic field is 2000Hz, and removing the upper-layer reducing slag after cooling to obtain the copper-tungsten alloy blank.
(3) Vacuum magnetic suspension induction melting
Placing the copper-tungsten alloy blank obtained in the step (2) in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace, and enabling the vacuum degree to reach 10-5Pa, melting the raw materials under the conditions of 7000V and 3.2A, then carrying out magnetic suspension smelting purification for 24min, and floating inclusions to the surface layer. After the vacuum magnetic suspension induction melting is finished, cooling to room temperature in a water-cooled copper crucible at the speed of 120 ℃/s, removing inclusions after cooling, and obtaining the purified and rapidly-cooled copper-tungsten alloy, wherein the mass fraction of Al and each component in the copper-tungsten alloy is as follows: 0.23% of Al, 10.6% of Cu and the balance of tungsten.
Example 3
The preparation method of the copper-tungsten alloy of the embodiment comprises the following steps
(1) Drying of the material
Mixing CuO powder and WO3The powder and the slag former CaO are dried in a constant temperature drying oven with the drying temperature of 260 DEG CDrying at 28 deg.C for 28 hr to obtain dried material.
(2) Thermite self-propagating reaction
Weighing the dried materials according to the mixture ratio of CuO powder to WO3The powder, CaO powder and aluminum powder are weighed according to the weight ratio of 100: 435: 58: 110, and the total weight of the materials is 10 kg; then mixing the mixture for 2 hours on a ball mill, putting the mixture into a graphite crucible reactor, putting 5g of metal magnesium powder on the surface layer of the top of the graphite crucible reactor, igniting the metal magnesium powder by open fire to initiate the aluminothermic self-propagating reaction of the mixed material to obtain the copper-tungsten alloy and Al2O3-a high temperature melt of CaO reducing slag; and then casting the high-temperature melt into a graphite crucible, separating gold and slag from the high-temperature melt under the action of gravity and an electromagnetic field, wherein the frequency of the electromagnetic field is 2500Hz, and removing the upper-layer reducing slag after cooling to obtain the copper-tungsten alloy blank.
(3) Vacuum magnetic suspension induction melting
Placing the copper-tungsten alloy blank obtained in the step (2) in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace, and enabling the vacuum degree to reach 10-3Pa, melting the raw materials under the conditions of 6500V and 2.8A, then carrying out magnetic suspension smelting purification for 25min, and floating the inclusions to the surface layer. After the vacuum magnetic suspension induction melting is finished, cooling to room temperature in a water-cooled copper crucible at the speed of 100 ℃/s, removing inclusions after cooling, and obtaining the purified and rapidly-cooled copper-tungsten alloy, wherein the mass fraction of Al and each component in the copper-tungsten alloy is as follows: 0.32% of Al, 20.6% of Cu and the balance of tungsten.
Example 4
The preparation method of the copper-tungsten alloy of the embodiment comprises the following steps
(1) Drying of the material
Mixing CuO powder and WO3And (3) placing the powder and a slag former CaO into a constant-temperature drying oven for drying at 260 ℃ for 29h to obtain a dried material.
(2) Thermite self-propagating reaction
Weighing the dried materials according to the mixture ratio of CuO powder to WO3The powder, CaO powder and aluminum powder are weighed according to the total weight of 100: 283: 24: 7610 kg; then mixing the mixture for 3 hours on a ball mill, putting the mixture into a graphite crucible reactor, putting 5g of metal magnesium powder on the surface layer of the top of the graphite crucible reactor, igniting the metal magnesium powder by open fire to initiate the aluminothermic self-propagating reaction of the mixed material to obtain the copper-tungsten alloy and Al2O3-a high temperature melt of CaO reducing slag; and then casting the high-temperature melt into a graphite crucible, separating gold and slag from the high-temperature melt under the action of gravity and an electromagnetic field, wherein the frequency of the electromagnetic field is 1500Hz, and removing the upper-layer reducing slag after cooling to obtain the copper-tungsten alloy blank.
(3) Vacuum magnetic suspension induction melting
Placing the copper-tungsten alloy blank obtained in the step (2) in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace, and enabling the vacuum degree to reach 10-4And Pa, melting the raw materials under the conditions of 6200V and 2.4A, then carrying out magnetic suspension smelting purification for 28min, and floating the inclusions to the surface layer. After the vacuum magnetic suspension induction melting is finished, cooling to room temperature in a water-cooled copper crucible at the speed of 110 ℃/s, removing inclusions after cooling, and obtaining the purified and rapidly-cooled copper-tungsten alloy, wherein the mass fraction of Al and each component in the copper-tungsten alloy is as follows: 0.33% of Al, 30.8% of Cu and the balance of tungsten.
Example 5
The preparation method of the copper-tungsten alloy of the embodiment comprises the following steps
(1) Drying of the material
Mixing CuO powder and WO3And (3) placing the powder and a slag former CaO into a constant-temperature drying oven for drying at the drying temperature of 280 ℃ for 25 hours to obtain a dried material.
(2) Thermite self-propagating reaction
Weighing the dried materials according to the mixture ratio of CuO powder to WO3The powder, CaO powder and aluminum powder are weighed according to the weight ratio of 100: 158: 26: 56, and the total weight of the materials is 10 kg; then mixing the mixture for 2 hours on a ball mill, putting the mixture into a graphite crucible reactor, putting 5g of metal magnesium powder on the surface layer of the top of the graphite crucible reactor, igniting the metal magnesium powder by open fire to initiate the aluminothermic self-propagating reaction of the mixed material to obtain the copper-tungsten alloy and Al2O3-a high temperature melt of CaO reducing slag; then casting the high-temperature melt toIn the graphite crucible, gold and slag separation is carried out on the high-temperature melt under the action of gravity and an electromagnetic field, the frequency of the electromagnetic field is 2000Hz, and after cooling, the upper layer of reducing slag is removed to obtain the copper-tungsten alloy blank.
(3) Vacuum magnetic suspension induction melting
Placing the copper-tungsten alloy blank obtained in the step (2) in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace, and enabling the vacuum degree to reach 10-3Pa, melting the raw materials under the conditions of 6000V and 2.1A, then carrying out magnetic suspension smelting purification for 24min, and floating the inclusions to the surface layer. After the vacuum magnetic suspension induction melting is finished, cooling to room temperature in a water-cooled copper crucible at the speed of 90 ℃/s, removing inclusions after cooling, and obtaining the purified and rapidly-cooled copper-tungsten alloy, wherein the mass fraction of Al and each component in the copper-tungsten alloy is as follows: 0.41% of Al, 39.5% of Cu and the balance of tungsten.
Example 6
The preparation method of the copper-tungsten alloy of the embodiment comprises the following steps
(1) Drying of the material
Mixing CuO powder and WO3And (3) placing the powder and a slag former CaO into a constant-temperature drying oven for drying at 290 ℃ for 22h to obtain a dried material.
(2) Thermite self-propagating reaction
Weighing the dried materials according to the mixture ratio of CuO powder to WO3The powder, CaO powder and aluminum powder are weighed according to the weight ratio of 100: 115: 22: 37, and the total weight of the materials is 10 kg; then mixing the mixture for 2 hours on a ball mill, putting the mixture into a graphite crucible reactor, putting 5g of metal magnesium powder on the surface layer of the top of the graphite crucible reactor, igniting the metal magnesium powder by open fire to initiate the aluminothermic self-propagating reaction of the mixed material to obtain the copper-tungsten alloy and Al2O3-a high temperature melt of CaO reducing slag; and then casting the high-temperature melt into a graphite crucible, separating gold and slag from the high-temperature melt under the action of gravity and an electromagnetic field, wherein the frequency of the electromagnetic field is 2500Hz, and removing the upper-layer reducing slag after cooling to obtain the copper-tungsten alloy blank.
(3) Vacuum magnetic suspension induction melting
Placing the copper-tungsten alloy blank obtained in the step (2) inIn a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace, and the vacuum degree of the water-cooled copper crucible reaches 10-3And Pa, melting the raw materials under the conditions of 5800V and 1.6A, then carrying out magnetic suspension smelting purification for 30min, and floating the inclusions to the surface layer. After the vacuum magnetic suspension induction melting is finished, cooling to room temperature in a water-cooled copper crucible at the speed of 100 ℃/s, removing inclusions after cooling, and obtaining the purified and rapidly-cooled copper-tungsten alloy, wherein the mass fraction of Al and each component in the copper-tungsten alloy is as follows: 0.38% of Al, 50.2% of Cu and the balance of tungsten.
Second, the examples of the copper-tungsten alloy of the present invention correspond to the final products of the copper-tungsten alloy production methods of examples 1 to 6, respectively.
Third, related test example
Test example 1
In the embodiment 1, the high-temperature melt obtained after the aluminothermic self-propagating reaction in the step (2) is subjected to gold slag separation under the action of gravity and an electromagnetic field, the copper-tungsten alloy blank is obtained by removing the upper reducing slag after cooling, the metallographic characterization is performed, and the obtained result is shown in fig. 1, wherein the tungsten particle size in the copper-tungsten alloy obtained after the gold slag separation is about 8 μm and black alumina inclusions are shown in fig. 1.
The copper-tungsten alloy blank obtained in the step (2) in the example 1 is placed in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace for magnetic suspension melting purification, then inclusions are removed, the copper-tungsten alloy after purification and rapid cooling is obtained after melting according to the step (3) in the example 1, and metallographic characterization is carried out on the copper-tungsten alloy, and the obtained result is shown in fig. 2.
Test example 2
In the embodiment 4, the high-temperature melt obtained after the aluminothermic self-propagating reaction in the step (2) is subjected to gold slag separation under the action of gravity and an electromagnetic field, the copper-tungsten alloy blank is obtained by removing the upper reducing slag after cooling, the metallographic characterization is performed, and the obtained result is shown in fig. 3, wherein the tungsten in the copper-tungsten alloy obtained after the gold slag separation is in a spherical shape with serial bonding, the size of the tungsten is about 10 μm, and black alumina is included in the tungsten alloy, and the size of the tungsten is about 10 μm.
The copper-tungsten alloy blank obtained in the step (2) in the example 4 is placed in a water-cooled copper crucible of a vacuum magnetic suspension induction melting furnace for magnetic suspension melting purification, then the impurities are removed, and the copper-tungsten alloy after purification and rapid cooling is obtained after melting according to the step (3) in the example 4, wherein the microstructure of the copper-tungsten alloy is uniform and has no alumina impurities, as shown in fig. 4.
Claims (10)
1. The preparation method of the copper-tungsten alloy is characterized by comprising the following steps of:
(1) carrying out aluminothermic self-propagating reaction on the uniformly mixed copper oxide, tungsten oxide, aluminum powder and slag former to obtain a high-temperature melt, separating gold slag to obtain an alloy melt, cooling and deslagging to obtain a copper-tungsten alloy blank;
(2) and (2) carrying out vacuum magnetic suspension induction smelting on the copper-tungsten alloy blank obtained in the step (1), and cooling and deslagging to obtain the copper-tungsten alloy.
2. The method for preparing the copper-tungsten alloy according to claim 1, wherein in the step (1), the weight ratio of the copper element in the copper oxide to the tungsten element in the tungsten oxide is 1: 1.1-15.5.
3. The method for preparing the copper-tungsten alloy according to claim 1, wherein in the step (1), the molar ratio of the aluminum element in the aluminum powder to the oxygen element in the copper oxide and the tungsten oxide is 1: 1.58-2.0.
4. The preparation method of the copper-tungsten alloy according to claim 1, wherein in the step (1), the weight ratio of the total weight of the copper oxide, the tungsten oxide and the aluminum powder to the slagging constituent is 11-25: 1.
5. The method for producing the copper-tungsten alloy according to any one of claims 1 to 4, wherein in the step (1), the tungsten oxide is WO3And/or WO2。
6. The method for producing a copper-tungsten alloy according to any one of claims 1 to 4,characterized in that, in the step (1), the copper oxide is CuO and/or Cu2O。
7. The preparation method of the copper-tungsten alloy according to any one of claims 1 to 4, wherein in the step (2), the current of the vacuum magnetic suspension induction melting is 1.6-5.6A.
8. The preparation method of the copper-tungsten alloy according to claim 7, wherein the voltage of the vacuum magnetic suspension induction melting is 4000-9000V.
9. The method for preparing the copper-tungsten alloy according to any one of claims 1 to 4, wherein the cooling rate in the step (2) is 80 to 120 ℃/s.
10. A copper-tungsten alloy produced by the production method according to claim 1.
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| CN114635050A (en) * | 2022-04-13 | 2022-06-17 | 河南科技大学 | In-situ synthesized particle-reinforced wear-resistant aluminum bronze and preparation method thereof |
| CN115156545A (en) * | 2022-06-30 | 2022-10-11 | 赣州有色冶金研究所有限公司 | Ultra-coarse tungsten powder, ultra-coarse tungsten carbide powder and preparation method thereof |
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| CN114635050A (en) * | 2022-04-13 | 2022-06-17 | 河南科技大学 | In-situ synthesized particle-reinforced wear-resistant aluminum bronze and preparation method thereof |
| CN115156545A (en) * | 2022-06-30 | 2022-10-11 | 赣州有色冶金研究所有限公司 | Ultra-coarse tungsten powder, ultra-coarse tungsten carbide powder and preparation method thereof |
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