CN111378866A - Copper-titanium intermediate alloy and preparation method and application thereof - Google Patents
Copper-titanium intermediate alloy and preparation method and application thereof Download PDFInfo
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- CN111378866A CN111378866A CN202010315722.1A CN202010315722A CN111378866A CN 111378866 A CN111378866 A CN 111378866A CN 202010315722 A CN202010315722 A CN 202010315722A CN 111378866 A CN111378866 A CN 111378866A
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C9/00—Alloys based on copper
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- 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
- C22C1/03—Making non-ferrous alloys by melting using master alloys
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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
- C22C1/06—Making non-ferrous alloys with the use of special agents for refining or deoxidising
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Abstract
The invention provides a copper-titanium intermediate alloy and a preparation method and application thereof, belonging to the technical field of metal materials. The copper-titanium intermediate alloy provided by the invention comprises 67-73 wt% of Cu and 27-33 wt% of Ti. The copper-titanium intermediate alloy provided by the invention neutralizes the densities of two simple substances of copper and titanium by designing the alloy components, has smaller component segregation, and can reduce the smelting temperature and prevent the component segregation when replacing high-purity copper for smelting titanium alloy. Experimental results show that the copper-titanium intermediate alloy provided by the invention is stable in component, low in impurity content and small in component segregation.
Description
Technical Field
The invention relates to the technical field of metal materials, in particular to a copper-titanium intermediate alloy and a preparation method and application thereof.
Background
The titanium alloy has excellent properties, such as high specific strength, corrosion resistance, high temperature resistance, good comprehensive process performance and the like, is increasingly attractive in the field of modern industrial science and technology, and is widely applied to the fields of aerospace, aviation, petroleum, chemical engineering, light industry, metallurgy, machinery, energy and the like.
The density of the high-purity copper is 8.96g/cm3The density of the sponge titanium is 4.516g/cm3When copper is used to smelt titanium alloys in the form of simple substance, the segregation phenomenon of titanium alloys is caused by the density difference. For example, patent CN201210568183.8 discloses vacuum smelting of an electrolytic copper plate and pure titanium in proportion into a copper-titanium intermediate alloy, wherein the mass ratio of copper to titanium is (0.9:1) - (1.1:1), and patent CN201110249679.4 discloses grinding titanium sponge into particles, melting copper and titanium in a proportion of 5-10 wt% of titanium and the balance of copper and unavoidable impurities within 1250-1350 ℃, and casting into the copper-titanium intermediate alloy at 1200-1250 ℃. But as described aboveThe copper-titanium intermediate alloy provided by the scheme still has the phenomenon of component segregation, and meanwhile, the smelting temperature is high, the preparation process is complex, so that the requirement on equipment in the industrial production process is high, and further, the production cost is increased.
Disclosure of Invention
The invention aims to provide a copper-titanium intermediate alloy which is uniform and stable in components, free of segregation and low in impurity content, is used for smelting titanium alloy, contributes to homogenization of alloy components and reduces loss of raw materials for smelting the titanium alloy.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a copper-titanium intermediate alloy which comprises 67-73 wt% of Cu and 27-33 wt% of Ti.
Preferably, 68-72 wt% of Cu and 28-32 wt% of Ti are included.
The invention also provides a preparation method of the copper-titanium intermediate alloy, which comprises the following steps: and carrying out vacuum induction melting on the copper source and the titanium source to obtain the copper-titanium intermediate alloy.
Preferably, the vacuum induction melting is performed in a medium frequency vacuum induction furnace.
Preferably, the vacuum degree of the vacuum induction melting is: not less than 20 Pa.
Preferably, the vacuum induction melting comprises the following steps:
(1) carrying out vacuum induction heating on a copper source and a titanium source to obtain a mixed melt;
(2) refining the mixed melt obtained in the step (1) to obtain alloy liquid;
(3) and (3) pouring the alloy liquid obtained in the step (2) to obtain the copper-titanium intermediate alloy.
Preferably, the power of the induction heating in the step (1) is 40-80 kW.
Preferably, the refining power in the step (2) is 78-82 kW.
Preferably, the refining temperature in the step (2) is 1000-1150 ℃, and the refining time is 3-10 minutes.
The invention also provides application of the copper-titanium intermediate alloy in preparing TA13 titanium alloy.
The invention provides a copper-titanium intermediate alloy which comprises 67.7-71.7 wt% of Cu and 27.8-31.8 wt% of Ti. The copper-titanium intermediate alloy provided by the invention neutralizes the densities of two simple substances of copper and titanium by designing the alloy components, has smaller component segregation, and can reduce the smelting temperature and prevent the component segregation when replacing high-purity copper for smelting titanium alloy. Experimental results show that the copper-titanium intermediate alloy provided by the invention is stable in component, low in impurity content and small in component segregation.
Detailed Description
The invention provides a copper-titanium intermediate alloy which comprises 67-73 wt% of Cu and 27-33 wt% of Ti. 68-72 wt% of Cu and 28-32 wt%
The copper-titanium master alloy provided by the invention comprises 67-73 wt% of Cu, preferably 68-72 wt%, more preferably 68.7-70.7 wt%, and most preferably 69.7 wt%.
The copper-titanium intermediate alloy provided by the invention comprises 27-33 wt% of Ti, preferably 28-32 wt%, more preferably 28.8-30.8 wt%, and most preferably 29.8 wt%.
The copper-titanium master alloy provided by the invention preferably further comprises impurity elements in the content of preferably 0.05 wt% or less C, 0.06 wt% or less Cr, 0.12 wt% or less Fe, 0.09 wt% or less Mg, 0.014 wt% or less P, 0.03 wt% or less Pb, 0.008 wt% or less S, 0.13 wt% or less Si, 0.003 wt% or less W, more preferably 0.04 wt% or less C, 0.05 wt% or less Cr, 0.11 wt% or less Fe, 0.08 wt% or less Mg, 0.012 wt% or less P, 0.02 wt% or less Pb, 0.006 wt% or less S, 0.12 wt% or less Si, 0.002 wt% or less W, most preferably 0.03 wt% or less C, 0.03 wt% or less Cr, 0.10 wt% or less Fe, 0.07 wt% or less Mg, 0.010 wt% or less P, 0.01 wt% or less Pb, 0.005 wt% or less S, 0.001 wt% or less Si, 0.11 wt% or less W, 0.0.
The invention controls the content of each component in the range, neutralizes the density of two simple substances of copper and titanium by designing alloy components, has smaller component segregation, and can reduce the smelting temperature and prevent the component segregation when replacing high-purity copper for smelting titanium alloy.
The invention also provides a preparation method of the copper-titanium intermediate alloy, which takes the copper source and the titanium source as raw materials to carry out vacuum induction melting to obtain the copper-titanium intermediate alloy.
In the invention, the copper source is preferably high-purity copper, and more preferably high-purity copper with the purity of more than or equal to 99.999 percent; the particle size of the high-purity copper is preferably less than or equal to 175 μm, more preferably less than or equal to 74 μm, and most preferably less than or equal to 43 μm. In the invention, the titanium source is preferably titanium sponge, and more preferably titanium sponge with the purity of more than or equal to 99.1 percent; the particle size of the titanium sponge is preferably 0.83mm to 12.7mm, more preferably 2mm to 10mm, and most preferably 3mm to 8 mm. The purity of the copper source and the titanium source used by the invention is high, the impurities in the copper-titanium intermediate alloy can be reduced, the composition segregation is prevented, and meanwhile, the sponge titanium has a porous form, so that the sponge titanium is easier to melt and the melting temperature can be reduced.
In the present invention, the sources of the copper source and the titanium source are not particularly limited, and commercially available products known to those skilled in the art may be used.
The vacuum induction melting apparatus of the present invention is not particularly limited, and a vacuum induction heating furnace known to those skilled in the art may be used. In the present invention, the vacuum induction melting is preferably performed in a medium frequency vacuum induction furnace.
In the invention, the vacuum degree of the vacuum induction melting is preferably not less than 20Pa, and more preferably 25-30 Pa. The vacuum degree is controlled within the range, impurities in the air can be prevented from being doped into the copper-titanium intermediate alloy in the smelting process, the impurities in the copper-titanium intermediate alloy are reduced, and component segregation is prevented.
In the invention, before the vacuum induction melting of the copper source and the titanium source, the copper source and the titanium source are preferably mixed. The specific process for mixing the copper source and the titanium source is not particularly limited, and the method can ensure that the copper source and the titanium source are uniformly mixed by adopting a mode well known by the technical personnel in the field.
In the present invention, the vacuum induction melting preferably includes the steps of:
(1) carrying out vacuum induction heating on a copper source and a titanium source to obtain a mixed melt;
(2) refining the mixed melt obtained in the step (1) to obtain alloy liquid;
(3) and (3) pouring the alloy liquid obtained in the step (2) to obtain the copper-titanium intermediate alloy.
According to the invention, the copper source and the titanium source are preferably subjected to vacuum induction heating to obtain a mixed melt. The temperature rise rate of the vacuum induction heating is not particularly limited in the present invention, and the temperature rise rate known to those skilled in the art can be adopted. In the invention, the heating rate is preferably controlled by adjusting the power of the medium-frequency vacuum induction furnace, and the power preferably comprises initial power, transition power and stable power; the initial power is preferably 40-45 kW, and more preferably 42-43 kW; the heating time under the initial power is preferably 2-3 min, and more preferably 2.5 min; the transition power is preferably 55-60 kW, and more preferably 57-58 kW; preferably heating at said transition power until the metal begins to melt; the stable power is preferably 68-72 kW, and more preferably 70-71 kW; the heating is preferably carried out at said steady power until the metal is completely melted. The invention limits the power within the range, the copper source and the titanium source are firstly heated under the initial power, then heated under the transition power until the metal begins to melt, and finally heated under the stable power until the raw materials are completely melted, thus obtaining the mixed melt.
After the mixed melt is obtained, the mixed melt is preferably refined to obtain alloy liquid. In the present invention, it is preferable to reach the temperature of refining by adjusting the power of the refining; the refining power is preferably 78-82 kW, and more preferably 80-81 kW; the refining temperature is preferably 1000-1150 ℃, and more preferably 1100 ℃; the refining time is preferably 3 to 10 minutes, and more preferably 5 minutes. In the present invention, the refining process is limited to the above range, and impurities and gases in the melt can be removed to obtain a pure alloy liquid.
After obtaining the alloy liquid, the invention preferably pours the alloy liquid to obtain the copper-titanium intermediate alloy. The cooling method of the casting is not particularly limited in the present invention, and a cooling scheme well known to those skilled in the art can be adopted. In the invention, the cooling mode of the pouring is preferably furnace cooling, and the termination temperature of the cooling is preferably less than 150 ℃; the cooling time is preferably 120 to 200 minutes, more preferably 130 to 180 minutes, and most preferably 150 minutes. The casting operation is not particularly limited in the present invention, and a casting scheme well known to those skilled in the art may be selected.
The invention also provides application of the copper-titanium intermediate alloy in preparing TA13 titanium alloy.
The copper-titanium intermediate alloy provided by the invention neutralizes the densities of two simple substances of copper and titanium by designing the alloy components, has smaller component segregation, and can reduce the smelting temperature and prevent the component segregation when replacing high-purity copper for smelting titanium alloy. Experimental results show that the copper-titanium intermediate alloy provided by the invention is stable in component, low in impurity content and small in component segregation.
The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the 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.
Example 1
1. 68 wt% of high-purity copper and 32 wt% of sponge titanium are added according to the specification: the raw materials are fully contacted as much as possible, the medium-frequency vacuum induction furnace can be heated and melted, and finally the furnace is filled.
2. Preparation before power transmission
(1) And (4) starting a circulating water pump, checking whether the pipeline has leakage, and adjusting the water quantity distribution of each pipeline to be proper and the pressure to be proper.
(2) And (5) checking whether the power system is normal or not, and if the power system is abnormal, timely maintaining.
(3) And if the transparent condition of the glass of the observation hole is determined to be poor, the cover needs to be opened for wiping or is polished by sand paper, and after the observation hole is installed back, the position-adjusting hand button is twisted, the position adjustment needs to be flexible, and the gland is sealed well.
3. Melting
(1) Vacuumizing, and when the pressure is 30Pa, transmitting power for smelting.
(2) Power is transmitted, and the initial power is 40 kW;
(3) after 5 minutes, the power is adjusted to 55 kW;
(4) after the alloy is melted, the power is adjusted to 70 kW;
(5) after the alloy is melted down, the power is properly increased by 80kW, and the alloy is refined for 5 minutes at 1150 ℃ and poured.
4. Cooling for 150 minutes and discharging to obtain the copper-titanium intermediate alloy.
During the smelting process it was observed that: the alloy becomes dark red and slowly melts, and the alloy liquid brightens and becomes clear.
One position of the copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled and subjected to chemical composition analysis, and the results are shown in example 1 in table 6.
The copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled at different positions, and subjected to chemical composition analysis, wherein two points, numbered 1 and 2, respectively, were taken from the upper surface of the ingot, two points, numbered 3 and 4, respectively, were taken from the lower surface of the ingot, and two points, numbered 5 and 6, respectively, were taken from the middle portion of the ingot, and subjected to composition analysis, and the results are shown in table 1. As can be seen from Table 1, the copper-titanium master alloy prepared in this example has uniform and stable components and no segregation.
Table 1 example 1 chemical composition of different sites of copper titanium master alloy
Example 2
1. 68.7 wt% of high-purity copper and 31.3 wt% of titanium sponge are added according to the specification: the raw materials are fully contacted as much as possible, the medium-frequency vacuum induction furnace can be heated and melted, and finally the furnace is filled.
2. Preparation before power transmission
(1) And (4) starting a circulating water pump, checking whether the pipeline has leakage, and adjusting the water quantity distribution of each pipeline to be proper and the pressure to be proper.
(2) And (5) checking whether the power system is normal or not, and if the power system is abnormal, timely maintaining.
(3) And if the transparent condition of the glass of the observation hole is determined to be poor, the cover needs to be opened for wiping or is polished by sand paper, and after the observation hole is installed back, the position-adjusting hand button is twisted, the position adjustment needs to be flexible, and the gland is sealed well.
3. Melting
(1) Vacuumizing, and when the pressure is 30Pa, transmitting power for smelting.
(2) Power is transmitted, and the initial power is 40 kW;
(3) after 5 minutes, the power is adjusted to 55 kW;
(4) after the alloy is melted, the power is adjusted to 70 kW;
(5) after the alloy is melted down, the power is properly increased by 80kW, and the alloy is refined for 5 minutes at 1100 ℃ and poured.
4. Cooling for 150 minutes and discharging to obtain the copper-titanium intermediate alloy.
During the smelting process it was observed that: the alloy becomes dark red and slowly melts, and the alloy liquid brightens and becomes clear.
One position of the copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled for chemical composition analysis, and the results are shown in example 2 in table 6.
The copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled at different positions, and subjected to chemical composition analysis, wherein two points, numbered 1 and 2, respectively, were taken from the upper surface of the ingot, two points, numbered 3 and 4, respectively, were taken from the lower surface of the ingot, and two points, numbered 5 and 6, respectively, were taken from the middle portion of the ingot, and subjected to composition analysis, and the results are shown in table 2. As can be seen from Table 2, the copper-titanium master alloy prepared in this example has uniform and stable components and no segregation.
Table 2 example 2 chemical composition of different sites of copper titanium master alloy
Example 3
1. 69.7 wt% of high-purity copper and 30.3 wt% of titanium sponge are added according to the specification: the raw materials are fully contacted as much as possible, the medium-frequency vacuum induction furnace can be heated and melted, and finally the furnace is filled.
2. Preparation before power transmission
(1) And (4) starting a circulating water pump, checking whether the pipeline has leakage, and adjusting the water quantity distribution of each pipeline to be proper and the pressure to be proper.
(2) And (5) checking whether the power system is normal or not, and if the power system is abnormal, timely maintaining.
(3) And if the transparent condition of the glass of the observation hole is determined to be poor, the cover needs to be opened for wiping or is polished by sand paper, and after the observation hole is installed back, the position-adjusting hand button is twisted, the position adjustment needs to be flexible, and the gland is sealed well.
3. Melting
(1) Vacuumizing, and when the pressure is 30Pa, transmitting power for smelting.
(2) Power is transmitted, and the initial power is 40 kW;
(3) after 5 minutes, the power is adjusted to 55 kW;
(4) after the alloy is melted, the power is adjusted to 70 kW;
(5) after the alloy is melted down, the power is properly increased by 80kW, and the alloy is refined for 5 minutes at 1075 ℃ and poured.
4. Cooling for 150 minutes and discharging to obtain the copper-titanium intermediate alloy.
During the smelting process it was observed that: the alloy becomes dark red and slowly melts, and the alloy liquid brightens and becomes clear.
One position of the copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled and subjected to chemical composition analysis, and the results are shown in example 3 in table 6.
The copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled at different positions, and subjected to chemical composition analysis, wherein two points, numbered 1 and 2, respectively, were taken from the upper surface of the ingot, two points, numbered 3 and 4, respectively, were taken from the lower surface of the ingot, and two points, numbered 5 and 6, respectively, were taken from the middle portion of the ingot, and subjected to composition analysis, and the results are shown in table 3. As can be seen from Table 3, the copper-titanium master alloy prepared in this example has uniform and stable components and no segregation.
Table 3 example 3 chemical composition of copper titanium master alloy at different positions
Example 4
1. 70.7 wt% of high-purity copper and 29.3 wt% of titanium sponge are charged according to the specification: the raw materials are fully contacted as much as possible, the medium-frequency vacuum induction furnace can be heated and melted, and finally the furnace is filled.
2. Preparation before power transmission
(1) And (4) starting a circulating water pump, checking whether the pipeline has leakage, and adjusting the water quantity distribution of each pipeline to be proper and the pressure to be proper.
(2) And (5) checking whether the power system is normal or not, and if the power system is abnormal, timely maintaining.
(3) And if the transparent condition of the glass of the observation hole is determined to be poor, the cover needs to be opened for wiping or is polished by sand paper, and after the observation hole is installed back, the position-adjusting hand button is twisted, the position adjustment needs to be flexible, and the gland is sealed well.
3. Melting
(1) Vacuumizing, and when the pressure is 30Pa, transmitting power for smelting.
(2) Power is transmitted, and the initial power is 40 kW;
(3) after 5 minutes, the power is adjusted to 55 kW;
(4) after the alloy is melted, the power is adjusted to 70 kW;
(5) after the alloy is melted down, the power is properly increased by 80kW, and the alloy is refined for 5 minutes at 1025 ℃ and cast.
4. Cooling for 150 minutes and discharging to obtain the copper-titanium intermediate alloy.
During the smelting process it was observed that: the alloy becomes dark red and slowly melts, and the alloy liquid brightens and becomes clear.
One position of the copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled for chemical composition analysis, and the results are shown in example 4 in table 6.
The copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled at different positions, and subjected to chemical composition analysis, wherein two points, numbered 1 and 2, respectively, were taken from the upper surface of the ingot, two points, numbered 3 and 4, respectively, were taken from the lower surface of the ingot, and two points, numbered 5 and 6, respectively, were taken from the middle portion of the ingot, and subjected to composition analysis, and the results are shown in table 4. As can be seen from Table 4, the copper-titanium master alloy prepared in this example has uniform and stable components and no segregation.
Table 4 example 4 chemical composition of different sites of copper titanium master alloy
Example 5
1. 71.7 weight percent of high-purity copper and 28.3 weight percent of sponge titanium are added according to the specification: the raw materials are fully contacted as much as possible, the medium-frequency vacuum induction furnace can be heated and melted, and finally the furnace is filled.
2. Preparation before power transmission
(1) And (4) starting a circulating water pump, checking whether the pipeline has leakage, and adjusting the water quantity distribution of each pipeline to be proper and the pressure to be proper.
(2) And (5) checking whether the power system is normal or not, and if the power system is abnormal, timely maintaining.
(3) And if the transparent condition of the glass of the observation hole is determined to be poor, the cover needs to be opened for wiping or is polished by sand paper, and after the observation hole is installed back, the position-adjusting hand button is twisted, the position adjustment needs to be flexible, and the gland is sealed well.
3. Melting
(1) Vacuumizing, and when the pressure is 30Pa, transmitting power for smelting.
(2) Power is transmitted, and the initial power is 40 kW;
(3) after 5 minutes, the power is adjusted to 55 kW;
(4) after the alloy is melted, the power is adjusted to 70 kW;
(5) after the alloy is melted down, the power is properly increased by 80kW, and the alloy is refined for 5 minutes at 1000 ℃ and poured.
4. Cooling for 150 minutes and discharging to obtain the copper-titanium intermediate alloy.
During the smelting process it was observed that: the alloy becomes dark red and slowly melts, and the alloy liquid brightens and becomes clear.
One position of the copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled and subjected to chemical composition analysis, and the results are shown in example 5 in table 6.
The copper-titanium intermediate alloy ingot (cylinder) prepared in this example was sampled at different positions, and subjected to chemical composition analysis, wherein two points, numbered 1 and 2, respectively, were taken from the upper surface of the ingot, two points, numbered 3 and 4, respectively, were taken from the lower surface of the ingot, and two points, numbered 5 and 6, respectively, were taken from the middle portion of the ingot, and subjected to composition analysis, and the results are shown in table 5. As can be seen from Table 5, the copper-titanium master alloy prepared in this example has uniform and stable components and no segregation.
TABLE 5 EXAMPLE 5 chemical composition of different sites of the copper titanium master alloy
TABLE 6 chemical composition of copper-titanium master alloy in examples 1 to 5
The embodiment shows that the copper-titanium intermediate alloy provided by the invention is stable in component and low in impurity content.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A copper-titanium intermediate alloy comprises 67-73 wt% of Cu and 27-33 wt% of Ti.
2. The copper-titanium master alloy according to claim 1, comprising 68 to 72 wt% of Cu and 28 to 32 wt% of Ti.
3. A method of producing the copper-titanium master alloy of claim 1 or 2, comprising: and carrying out vacuum induction melting on the copper source and the titanium source to obtain the copper-titanium intermediate alloy.
4. The method of claim 3, wherein the vacuum induction melting is performed in a medium frequency vacuum induction furnace.
5. The production method according to claim 3, wherein the degree of vacuum of the vacuum induction melting is: not less than 20 Pa.
6. The method of manufacturing of claim 3, wherein the vacuum induction melting comprises the steps of:
(1) carrying out vacuum induction heating on a copper source and a titanium source to obtain a mixed melt;
(2) refining the mixed melt obtained in the step (1) to obtain alloy liquid;
(3) and (3) pouring the alloy liquid obtained in the step (2) to obtain the copper-titanium intermediate alloy.
7. The production method according to claim 6, wherein the power of the induction heating in the step (1) is 40 to 80 kW.
8. The production method according to claim 6, wherein the refining power in the step (2) is 78-82 kW.
9. The preparation method according to claim 6, wherein the temperature of refining in the step (2) is 1000 ℃ to 1150 ℃, and the time of refining is 3 to 10 minutes.
10. Use of the copper-titanium intermediate alloy according to claim 1 or 2 or the copper-titanium intermediate alloy prepared by the preparation method according to any one of claims 3 to 9 in the preparation of a TA13 titanium alloy.
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