CN114752790B - Preparation method and device for vacuum consumable arc smelting copper-titanium alloy - Google Patents
Preparation method and device for vacuum consumable arc smelting copper-titanium alloy Download PDFInfo
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- CN114752790B CN114752790B CN202210357555.6A CN202210357555A CN114752790B CN 114752790 B CN114752790 B CN 114752790B CN 202210357555 A CN202210357555 A CN 202210357555A CN 114752790 B CN114752790 B CN 114752790B
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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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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/16—Remelting metals
- C22B9/20—Arc remelting
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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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0425—Copper-based alloys
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention discloses a preparation method and a device for vacuum consumable arc smelting copper-titanium alloy, belonging to the technical field of metal smelting, and comprising the following steps of S1: the copper powder and the titanium sponge powder are weighed according to the proportion and mixed, S2, pressing: filling the mixed powder with uniform mixture into a rubber sleeve, and then pressing in a cold isostatic press, and S3, sintering: carrying out vacuum sintering on the sizing material treated by the cold isostatic press; s4, consumable smelting: carrying out arc melting on the sintered motor rod in a vacuum consumable arc melting furnace; s5, discharging: the CuTi alloy is cooled for 15min and discharged after smelting, and the preparation method of the CuTi alloy provided by the invention can prepare the high-performance copper-titanium alloy material with low gas content, uniform structure and no segregation.
Description
Technical Field
The invention relates to the technical field of metal smelting, in particular to a preparation method and a device for vacuum consumable arc smelting copper-titanium alloy.
Background
At present, the preparation method of the CuTi alloy mainly comprises the following steps:
vacuum smelting: the copper block and the titanium sponge with a certain proportion are put into a vacuum induction furnace to be melted, and are poured into a die after being completely melted, and the performance of the copper-titanium alloy is improved by combining an induction melting method and deformation aging, but the common induction melting method is easy to cause segregation.
Powder mixing sintering method: uniformly mixing Cu powder and Ti powder, and performing compression molding after preparing a mixture to obtain an alloy green compact; the alloy green compact is sintered under the protection of inert gas atmosphere and then cooled and discharged from the furnace, and the CuTi alloy prepared by the method has high gas content and difficult control of components.
The invention provides a smelting method of a CuTi alloy material aiming at the defects of the preparation method of the CuTi alloy in the prior art. The invention discloses a vacuum consumable arc melting technology, which belongs to a method for preparing a high-performance copper-titanium alloy material with low gas content, uniform structure and no segregation.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method and a device for smelting copper-titanium alloy by vacuum consumable electrode arc.
The technical scheme of the invention is as follows: the preparation method of the vacuum consumable arc smelting copper-titanium alloy comprises the following steps:
s1, mixing:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and the titanium sponge powder according to the proportion by 3.0-3.5% of Ti3.5% and 96.5-97.0% of Cu, and putting the copper powder and the titanium sponge powder into a pair-spraying mixer for mixing for 3-6 hours to obtain a bagged mixture after mixing;
s2, pressing:
filling the mixed powder with uniform mixing into a rubber sleeve, mechanically vibrating for 40-60s, rolling for 3-5min, reversely upsetting for 2-4 times, and then placing the rubber sleeve into a cold isostatic press for pressing, wherein the internal pressure of the cold isostatic press is 150-300MPa, and the pressure maintaining time is 5-10min, so as to obtain a sizing material covered with the rubber sleeve;
s3, sintering:
taking out the shaping material in the rubber sleeve, placing the shaping material in a vacuum sintering furnace, firstly heating to 200-300 ℃ for preheating for 2-4h, heating to 450 ℃ after the moisture on the surface of the shaping material is evaporated, keeping the temperature for 1.5h, heating to 650 ℃ after keeping the temperature for 1.5h, heating to 900-1050 ℃ in the vacuum sintering furnace, keeping the temperature for 1-3h, and obtaining the electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode rod into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 1000-4000A, and the molten metal drops into a water-cooling crystallizer in a liquid drop manner to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after smelting, cooling for 15min, and discharging.
Further, the copper powder is atomized copper powder, the granularity of the copper powder is 20-60 mu m, the granularity of the titanium sponge is 1-5mm, and the mixing effect of the copper powder and the titanium powder with the granularity is best.
Further, the preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: placing 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber into a mixer for mixing for 30min, and uniformly mixing to obtain a mixture;
s3-2: heating the obtained mixture at 255-270 ℃ for 8-10min to obtain a liquid material;
s3-3: and (3) introducing the heated liquid material into a mold for heating, wherein the heating temperature is 260-280 ℃, the heating time is 20-30min, and after the mold is naturally cooled after the heating is finished, the rubber sleeve is obtained, and is not easy to crack and long in service life.
Further, the vacuum degree of the vacuum consumable arc melting furnace is 0.01-0.002pa, the vacuum environment of the consumable arc melting furnace is maintained, metal oxidation in the heating process is prevented, and the material performance of a final cast ingot is reduced.
Further, the voltage of the vacuum consumable arc melting furnace is that the electrode rod is ignited by adopting low voltage and high current, and is melted in a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency for preparing the metal cast ingot.
Further, the vacuum degree in the vacuum sintering furnace is 10-50pa, the vacuum environment is maintained, and the metal is prevented from being oxidized;
further, the heating rate in each heating process in the vacuum sintering furnace in the step S4 is 5-8 ℃/min, and the finally formed material has better performance.
The preparation device comprises a counter-spraying mixer, a cold isostatic press, a vacuum sintering furnace and a vacuum consumable arc melting furnace, wherein the counter-spraying mixer comprises a mixing bin, two raw bins, a spraying device and a discharging hole, the two raw bins are fixed above two sides of the mixing bin, the upper end of the spraying device is communicated with the raw bin, the inner end of the spraying device is communicated with the upper side of the mixing bin, the outer end of the spraying device is communicated with an external air supply system, a spiral stirrer is arranged at the bottom of the mixing bin, the discharging hole is arranged on one side of the bottom of the mixing bin, the spiral stirrer comprises a motor, a spiral stirring blade and a stirring rod, the motor is fixed below the mixing bin, the stirring rod is in transmission with an output shaft of the motor, the stirring rod penetrates through the bottom of the mixing bin and stretches into the inside of the mixing bin, the spiral stirring blade is fixedly connected with the stirring rod, the bottom of the spraying bin is provided with two air ports, the air ports are communicated with the air supply system, a filter screen is arranged above the mixing bin, and metal powder can be stirred up through the air ports, and the effect of the mixing bin can be better through the spiral stirrer.
The beneficial effects of the invention are as follows:
compared with a mixed sintering method, the preparation method of the CuTi alloy can effectively avoid the defect of high gas content in the CuTi alloy in the mixed sintering method, and the preparation method of the CuTi alloy can prepare the high-performance copper-titanium alloy material with low gas content, uniform structure and no segregation.
Drawings
Fig. 1 is a schematic diagram of the process principle of the consumable smelting in step S4 of the present invention.
Fig. 2 is a schematic structural view of an opposite spray mixer of the present invention.
FIG. 3 is a metallographic structure diagram of a CuTi alloy having a Ti content of 3.5% at 100X.
Wherein, 1-blending bunker, 2-former feed bin, 3-material spraying device, 4-spiral agitator, 5-discharge gate, 41-motor, 42-spiral stirring vane, 43-puddler, 11-jet, 12-filter screen.
Detailed Description
Example 1:
as shown in fig. 1, a preparation method of the vacuum consumable electrode arc smelting copper-titanium alloy comprises the following steps:
s1, mixing:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and the titanium sponge powder according to the ratio of Ti3.0 percent and Cu97 percent, and putting the copper powder and the titanium sponge powder into a pair-spraying mixer for mixing for 3-6 hours to obtain a bagged mixture after mixing;
s2, pressing:
filling the mixed powder with uniform mixing into a rubber sleeve, mechanically vibrating for 40s, rolling for 3min, reversely upsetting for 2 times, and then placing the rubber sleeve into a cold isostatic press for pressing, wherein the internal pressure of the cold isostatic press is 150MPa, and the pressure maintaining time is 5min, so as to obtain a sizing material covered with the rubber sleeve;
s3, sintering:
taking out the sizing material in the rubber sleeve, placing the sizing material in a vacuum sintering furnace, firstly heating to 200 ℃ for preheating for 2 hours, heating to 450 ℃ after the moisture on the surface of the sizing material is evaporated, keeping the temperature for 1.5 hours, heating to 650 ℃ after keeping the temperature for 1.5 hours, heating to 900 ℃ in the vacuum sintering furnace, keeping the temperature for 1 hour, and obtaining the electrode rod after sintering is completed;
s4, consumable smelting:
placing the sintered electrode rod into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 1000A, and dripping molten metal into a water-cooling crystallizer in a liquid drop manner to solidify into a CuTi alloy cast ingot;
s5, discharging:
and after smelting, cooling for 15min, and discharging.
The copper powder adopts atomized copper powder, the granularity of the copper powder is 20-30 mu m, the granularity of the titanium sponge is 1-3mm, and the mixing effect of the copper powder and the titanium powder with the granularity is best.
The preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: placing 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber into a mixer for mixing for 30min, and uniformly mixing to obtain a mixture;
s3-2: heating the obtained mixture at 255 ℃ for 8min to obtain a liquid material;
s3-3: and (3) introducing the heated liquid material into a mold for heating, wherein the heating temperature is 260 ℃, the heating time is 20min, and after the mold is naturally cooled after the heating is finished, the rubber sleeve is obtained, and is not easy to crack and long in service life.
The vacuum degree of the vacuum consumable arc melting furnace is 0.01pa, the vacuum environment of the consumable arc melting furnace is maintained, metal oxidation in the heating process is prevented, and the material performance of the final cast ingot is reduced.
The vacuum consumable arc melting furnace voltage is that the electrode rod is ignited by adopting low voltage and high current, and is melted in a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency for preparing the metal cast ingot.
The vacuum degree in the vacuum sintering furnace is 10pa, the vacuum environment is kept, and the metal is prevented from being oxidized;
in the step S4, the temperature rising rate in each temperature rising process in the vacuum sintering furnace is 5 ℃/min, and the finally formed material has better performance.
Example 2:
as shown in fig. 1, a preparation method of the vacuum consumable electrode arc smelting copper-titanium alloy comprises the following steps:
s1, mixing:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and the titanium sponge powder according to the ratio of Ti3.2 percent and Cu96.8 percent, and putting the copper powder and the titanium sponge powder into a pair-spraying mixer for mixing for 4 hours to obtain a bagged mixture after mixing;
s2, pressing:
filling the mixed powder with uniform mixing into a rubber sleeve, mechanically vibrating for 50s, rolling for 4min, reversely upsetting for 3 times, and then placing the rubber sleeve into a cold isostatic press for pressing, wherein the internal pressure of the cold isostatic press is 200MPa, and the pressure maintaining time is 8min, so as to obtain a sizing material covered with the rubber sleeve;
s3, sintering:
taking out the sizing material in the rubber sleeve, placing the sizing material in a vacuum sintering furnace, firstly heating to 250 ℃ for preheating for 3 hours, heating to 450 ℃ after the moisture on the surface of the sizing material is evaporated, keeping the temperature for 1.5 hours, heating to 650 ℃ after keeping the temperature for 1.5 hours, heating to 900 ℃ after keeping the temperature for 1.5 hours, heating to 1000 ℃ in the vacuum sintering furnace, keeping the temperature for 2 hours, and obtaining the electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode rod into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 2000A, and the molten metal drops into a water-cooling crystallizer in a liquid drop manner to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after smelting, cooling for 15min, and discharging.
The copper powder adopts atomized copper powder, the granularity of the copper powder is 30-60 mu m, the granularity of the titanium sponge is 3-5mm, and the mixing effect of the copper powder and the titanium powder with the granularity is best.
The preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: placing 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber into a mixer for mixing for 30min, and uniformly mixing to obtain a mixture;
s3-2: heating the obtained mixture at 260 ℃ for 9min to obtain a liquid material;
s3-3: and (3) introducing the heated liquid material into a mold for heating, wherein the heating temperature is 270 ℃, the heating time is 25min, and after the mold is naturally cooled after the heating is finished, the rubber sleeve is obtained, and is not easy to crack and long in service life.
The vacuum degree of the vacuum consumable arc melting furnace is 0.008pa, the vacuum environment of the consumable arc melting furnace is maintained, metal oxidation in the heating process is prevented, and the material performance of the final cast ingot is reduced.
The vacuum consumable arc melting furnace voltage is that the electrode rod is ignited by adopting low voltage and high current, and is melted in a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency for preparing the metal cast ingot.
The vacuum degree in the vacuum sintering furnace is 30pa, the vacuum environment is kept, and the metal is prevented from being oxidized;
in the step S4, the heating rate in each heating process in the vacuum sintering furnace is 6 ℃/min, and the finally formed material has better performance.
Example 3:
as shown in fig. 1, a preparation method of the vacuum consumable electrode arc smelting copper-titanium alloy comprises the following steps:
s1, mixing:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and titanium sponge powder according to the ratio of Ti3.5 percent and Cu96.5 percent, and filling the copper powder and the titanium sponge powder into a pair-spraying mixer for mixing for 6 hours to obtain a bagged mixture after the mixing is completed;
s2, pressing:
filling the mixed powder with uniform mixing into a rubber sleeve, mechanically vibrating for 60s, rolling for 5min, reversely upsetting for 4 times, and then placing the rubber sleeve into a cold isostatic press for pressing, wherein the internal pressure of the cold isostatic press is 300MPa, and the pressure maintaining time is 10min, so as to obtain a sizing material covered with the rubber sleeve;
s3, sintering:
taking out the sizing material in the rubber sleeve, placing the sizing material in a vacuum sintering furnace, preheating the sizing material to 300 ℃ for 4 hours, heating the sizing material to 450 ℃ after the surface water of the sizing material is evaporated, keeping the temperature for 1.5 hours, heating the sizing material to 650 ℃ after keeping the temperature for 1.5 hours, heating the sizing material to 900 ℃ after keeping the temperature for 1.5 hours, heating the sizing material in the vacuum sintering furnace to 1050 ℃ after keeping the temperature for 3 hours, and obtaining the electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode rod into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 4000A, and the molten metal drops into a water-cooling crystallizer in a liquid drop manner to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after smelting, cooling for 15min, and discharging.
The copper powder adopts atomized copper powder, the granularity of the copper powder is 20-60 mu m, the granularity of the titanium sponge is 1-5mm, and the mixing effect of the copper powder and the titanium powder with the granularity is best.
The preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: placing 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber into a mixer for mixing for 30min, and uniformly mixing to obtain a mixture;
s3-2: heating the obtained mixture at 270 ℃ for 10min to obtain a liquid material;
s3-3: and (3) introducing the heated liquid material into a mold for heating, wherein the heating temperature is 280 ℃, the heating time is 30min, and after the mold is naturally cooled after the heating is finished, the rubber sleeve is obtained, and is not easy to crack and long in service life.
The vacuum degree of the vacuum consumable arc melting furnace is 0.002pa, the vacuum environment of the consumable arc melting furnace is maintained, metal oxidation in the heating process is prevented, and the material performance of the final cast ingot is reduced.
The vacuum consumable arc melting furnace voltage is that the electrode rod is ignited by adopting low voltage and high current, and is melted in a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency for preparing the metal cast ingot.
The vacuum degree in the vacuum sintering furnace is 50pa, the vacuum environment is kept, and the metal is prevented from being oxidized;
in the step S4, the heating rate in each heating process in the vacuum sintering furnace is 8 ℃/min, and the finally formed material has better performance.
Comparative examples 1-3, the final ingots prepared in example 3 performed best.
Example 4:
as shown in fig. 1, a preparation method of the vacuum consumable electrode arc smelting copper-titanium alloy comprises the following steps:
s1, mixing:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and the titanium sponge powder according to the ratio of Ti3.5 percent and Cu96.5 percent, and putting the copper powder and the titanium sponge powder into a pair-spraying mixer for mixing for 6 hours to obtain a bagged mixture after the mixing is completed;
s2, pressing:
filling the mixed powder with uniform mixing into a rubber sleeve, mechanically vibrating for 60s, rolling for 5min, reversely upsetting for 4 times, and then placing the rubber sleeve into a cold isostatic press for pressing, wherein the internal pressure of the cold isostatic press is 300MPa, and the pressure maintaining time is 10min, so as to obtain a sizing material covered with the rubber sleeve;
s3, sintering:
taking out the sizing material in the rubber sleeve, placing the sizing material in a vacuum sintering furnace, preheating the sizing material to 300 ℃ for 4 hours, heating the sizing material to 450 ℃ after the surface water of the sizing material is evaporated, keeping the temperature for 1.5 hours, heating the sizing material to 650 ℃ after keeping the temperature for 1.5 hours, heating the sizing material to 900 ℃ after keeping the temperature for 1.5 hours, heating the sizing material in the vacuum sintering furnace to 1050 ℃ after keeping the temperature for 3 hours, and obtaining the electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode rod into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 4000A, and the molten metal drops into a water-cooling crystallizer in a liquid drop manner to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after smelting, cooling for 15min, and discharging.
The copper powder adopts atomized copper powder, the granularity of the copper powder is 20-60 mu m, the granularity of the titanium sponge is 1-5mm, and the mixing effect of the copper powder and the titanium powder with the granularity is best.
The preparation method of the rubber sleeve comprises the following steps:
s3-1: placing 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber into a mixer for mixing for 30min, and uniformly mixing to obtain a mixture;
s3-2: heating the obtained mixture at 270 ℃ for 10min to obtain a liquid material;
s3-3: and (3) introducing the heated liquid material into a mold for heating, wherein the heating temperature is 280 ℃, the heating time is 30min, and after the mold is naturally cooled after the heating is finished, the rubber sleeve is obtained, and is not easy to crack and long in service life.
The vacuum degree of the vacuum consumable arc melting furnace is 0.002pa, the vacuum environment of the consumable arc melting furnace is maintained, metal oxidation in the heating process is prevented, and the material performance of the final cast ingot is reduced.
The vacuum consumable arc melting furnace voltage is that the electrode rod is ignited by adopting low voltage and high current, and is melted in a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency for preparing the metal cast ingot.
The vacuum degree in the vacuum sintering furnace is 50pa, the vacuum environment is kept, and the metal is prevented from being oxidized;
in the step S4, the heating rate in each heating process in the vacuum sintering furnace is 8 ℃/min, and the finally formed material has better performance.
As shown in fig. 2, the preparation device for smelting copper-titanium alloy by vacuum self-consuming arc comprises a counter-spraying mixer, a cold isostatic press, a vacuum sintering furnace and a vacuum self-consuming arc smelting furnace, wherein the counter-spraying mixer comprises a mixing bin 1, two raw bins 2, a spraying device 3 and a discharging hole 5, the two raw bins 2 are fixed above two sides of the mixing bin 1, the upper end of the spraying device 3 is communicated with the raw bins 2, the inner end of the spraying device is communicated with the upper side of the mixing bin 1, the outer end of the spraying device is communicated with an external air supply system, a spiral stirrer 4 is arranged at the bottom of the mixing bin 1, the discharging hole 5 is arranged at one side of the bottom of the mixing bin 1, the spiral stirrer 4 comprises a motor 41, a spiral stirring blade 42 and a stirring rod 43, the motor 41 is fixed below the mixing bin 1, the stirring rod 43 is in transmission with an output shaft of the motor 41, the stirring rod 43 penetrates through the bottom of the mixing bin 1 and stretches into the inside of the mixing bin 1, the spiral stirring blade 42 is fixedly connected with the stirring rod 43, the bottom of the mixing bin 1 is provided with two holes 11, the air spraying hole 11 is communicated with the external air supply system, the air supply system is arranged above the mixing bin 1, the air filter 12 is provided with an air filter 12, and the metal powder can be mixed by moving upwards through the spiral stirrer 4.
Example 4 compared with example 3, the counter-spraying mixer in example 4 was adopted, the mixing effect was the best, and the efficiency was the highest.
The motor 41 used in embodiment 4 is a commercially available product, so long as the function of the present invention can be achieved, and the person skilled in the art can select and use the motor according to common general knowledge, and is not particularly limited herein.
The chemical content measurements of the CuTi alloys prepared in examples 1-4 are shown in Table 1.
Table 1: examples 1-4 chemical content detection of CuTi alloy
As shown in fig. 3, fig. 3 shows a metallographic structure of a CuTi alloy having a Ti content of 3.5% at 100X.
Claims (3)
1. The preparation method of the vacuum consumable arc smelting copper-titanium alloy is characterized by comprising the following steps of:
s1, mixing:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and the titanium sponge powder according to the proportion by 3.0-3.5% of Ti3.5% and 96.5-97.0% of Cu, and putting the copper powder and the titanium sponge powder into a pair-spraying mixer for mixing for 3-6 hours to obtain a bagged mixture after mixing;
s2, pressing:
filling the mixed powder with uniform mixing into a rubber sleeve, mechanically vibrating for 40-60s, rolling for 3-5min, reversely upsetting for 2-4 times, and then placing the rubber sleeve into a cold isostatic press for pressing, wherein the internal pressure of the cold isostatic press is 150-300MPa, and the pressure maintaining time is 5-10min, so as to obtain a sizing material covered with the rubber sleeve;
s3, sintering:
taking out the shaping material in the rubber sleeve, placing the shaping material in a vacuum sintering furnace, firstly heating to 200-300 ℃ for preheating for 2-4h, heating to 450 ℃ after the moisture on the surface of the shaping material is evaporated, keeping the temperature for 1.5h, heating to 650 ℃ after keeping the temperature for 1.5h, heating to 900-1050 ℃ in the vacuum sintering furnace, keeping the temperature for 1-3h, and obtaining the electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode rod into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 1000-4000A, and the molten metal drops into a water-cooling crystallizer in a liquid drop manner to be solidified into a CuTi alloy cast ingot;
s5, discharging:
cooling for 15min after smelting, and discharging;
the copper powder is atomized copper powder, the granularity of the copper powder is 20-60 mu m, and the granularity of the titanium sponge is 1-5mm;
the preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: placing 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber into a mixer for mixing for 30min, and uniformly mixing to obtain a mixture;
s3-2: heating the obtained mixture at 255-270 ℃ for 8-10min to obtain a liquid material;
s3-3: introducing the heated liquid material into a mold for heating at 260-280 ℃ for 20-30min, and naturally cooling the mold after heating to obtain the rubber sleeve;
the vacuum degree of the vacuum consumable arc melting furnace is 0.01-0.002Pa;
the vacuum consumable arc melting furnace voltage is that the electrode rod is started by adopting low voltage and high current, and melting is carried out in a layer-by-layer melting mode, wherein the melting rate is 30mm/min;
the vacuum consumable arc melting adopts a layer-by-layer melting mode to melt, and the melting rate is 30mm/min.
2. The method for preparing a vacuum consumable arc melting copper-titanium alloy according to claim 1, wherein the heating rate in each heating process in the vacuum sintering furnace in the step S3 is 5-8 ℃/min.
3. The preparation device for the vacuum self-consuming arc smelting copper-titanium alloy is characterized by comprising a counter-spraying mixer, a cold isostatic press, a vacuum sintering furnace and a vacuum self-consuming arc smelting furnace, wherein the counter-spraying mixer comprises a mixing bin (1), two raw material bins (2), a spraying device (3) and a discharge port (5), the two raw material bins (2) are fixed above two sides of the mixing bin (1), the upper end of the spraying device (3) is communicated with the raw material bins (2), the inner end of the spraying device is communicated with the upper side of the mixing bin (1), the outer end of the spraying device is communicated with an external air supply system, a spiral stirrer (4) is arranged at the bottom of the mixing bin (1), the discharge port (5) is arranged on one side of the bottom of the mixing bin (1), the spiral stirrer (4) comprises a motor (41), a spiral stirring blade (42) and a stirring rod (43), the motor (41) is fixed below the mixing bin (1), the two output shafts (41) are fixed on the two stirring rods (43) and penetrate through the bottom of the mixing bin (1) and are connected with the stirring rod (43) in a transmission way, the air jet (11) is communicated with an external air supply system, and an air filtering net (12) is arranged above the mixing bin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210357555.6A CN114752790B (en) | 2022-04-06 | 2022-04-06 | Preparation method and device for vacuum consumable arc smelting copper-titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210357555.6A CN114752790B (en) | 2022-04-06 | 2022-04-06 | Preparation method and device for vacuum consumable arc smelting copper-titanium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114752790A CN114752790A (en) | 2022-07-15 |
| CN114752790B true CN114752790B (en) | 2023-09-08 |
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| US5358687A (en) * | 1993-06-21 | 1994-10-25 | Agency Of Industrial Science And Technology | Processes for manufacturing intermetallic compounds, intermetallic alloys and intermetallic matrix composite materials made thereof |
| JPH07228933A (en) * | 1994-02-21 | 1995-08-29 | Toshiba Corp | Contact material for vacuum valve |
| JPH11131111A (en) * | 1997-10-28 | 1999-05-18 | Tokyo Seiko Co Ltd | Production of copper-iron alloy granule, its producing apparatus and copper-iron alloy granule |
| CN109852831A (en) * | 2019-01-15 | 2019-06-07 | 中南大学 | A kind of preparation method of metal material or metallic composite |
| CN209439423U (en) * | 2018-01-04 | 2019-09-27 | 王虎 | A kind of vacuum electromagnetic stirring automatic pouring alloy melting machine |
| CN110484741A (en) * | 2019-07-30 | 2019-11-22 | 陕西斯瑞新材料股份有限公司 | A method of height, which is prepared, using vacuum consumable method leads high-strength copper-based material |
| EP3854502A1 (en) * | 2020-01-23 | 2021-07-28 | ABB Schweiz AG | A composite and method of preparation thereof |
| CN113462912A (en) * | 2021-06-02 | 2021-10-01 | 陕西斯瑞新材料股份有限公司 | Preparation method for smelting copper-titanium series alloy material by adopting vacuum consumable arc |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5358687A (en) * | 1993-06-21 | 1994-10-25 | Agency Of Industrial Science And Technology | Processes for manufacturing intermetallic compounds, intermetallic alloys and intermetallic matrix composite materials made thereof |
| JPH07228933A (en) * | 1994-02-21 | 1995-08-29 | Toshiba Corp | Contact material for vacuum valve |
| JPH11131111A (en) * | 1997-10-28 | 1999-05-18 | Tokyo Seiko Co Ltd | Production of copper-iron alloy granule, its producing apparatus and copper-iron alloy granule |
| CN209439423U (en) * | 2018-01-04 | 2019-09-27 | 王虎 | A kind of vacuum electromagnetic stirring automatic pouring alloy melting machine |
| CN109852831A (en) * | 2019-01-15 | 2019-06-07 | 中南大学 | A kind of preparation method of metal material or metallic composite |
| CN110484741A (en) * | 2019-07-30 | 2019-11-22 | 陕西斯瑞新材料股份有限公司 | A method of height, which is prepared, using vacuum consumable method leads high-strength copper-based material |
| EP3854502A1 (en) * | 2020-01-23 | 2021-07-28 | ABB Schweiz AG | A composite and method of preparation thereof |
| CN113462912A (en) * | 2021-06-02 | 2021-10-01 | 陕西斯瑞新材料股份有限公司 | Preparation method for smelting copper-titanium series alloy material by adopting vacuum consumable arc |
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