CN114752790A - Preparation method and device for vacuum consumable arc melting of copper-titanium alloy - Google Patents
Preparation method and device for vacuum consumable arc melting of copper-titanium alloy Download PDFInfo
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Abstract
The invention discloses a preparation method and a device for vacuum consumable arc melting of copper-titanium alloy, belonging to the technical field of metal smelting, and comprising the following steps of S1: weighing the required copper powder and the sponge titanium powder according to the proportion, mixing, and S2, pressing: and (2) filling the uniformly mixed powder into a rubber sleeve, 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 motor rod obtained by sintering in a vacuum consumable arc melting furnace; s5, discharging: and cooling for 15min after smelting is finished, and discharging the CuTi alloy from the furnace, wherein the CuTi alloy preparation method provided by the invention can be used for preparing a 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 smelting copper-titanium alloy by vacuum consumable electric arc.
Background
At present, the preparation methods of the CuTi alloy in China mainly comprise the following steps:
Vacuum melting: the method comprises the steps of putting a certain proportion of copper blocks and titanium sponge into a vacuum induction furnace for melting, pouring the molten copper blocks and the titanium sponge into a mold after the molten copper blocks and the titanium sponge are completely melted, and generally combining an induction melting method and deformation aging to improve the performance of the copper-titanium alloy, but the common induction melting method is easy to cause segregation.
Powder mixing and sintering method: uniformly mixing Cu powder and Ti powder to prepare a mixture, and then performing compression molding to obtain an alloy green body; the alloy green body is sintered under the protection of inert gas atmosphere and then is cooled and discharged out of the furnace, and the CuTi alloy prepared by the method has high gas content and is difficult to control the components.
Aiming at the defects of the preparation method of the CuTi alloy in the prior art, the invention provides a method for smelting a CuTi alloy material. The invention discloses a vacuum consumable arc melting technology, and 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 problem, the invention provides a preparation method and a device for vacuum consumable arc melting of copper-titanium alloy.
The technical scheme of the invention is as follows: a preparation method of vacuum consumable arc melting copper-titanium alloy comprises the following steps:
S1, mixing materials:
the raw materials comprise the following elements in percentage by mass: 3.0 to 3.5 percent of Ti3.5 percent of Cu96.5 to 97.0 percent of copper powder and spongy titanium powder are weighed according to the proportion, the copper powder and the spongy titanium powder are put into a spraying mixer to be mixed for 3 to 6 hours, and a bagged mixture is obtained after the mixing is finished;
s2, pressing:
putting the uniformly mixed powder into a rubber sleeve, then mechanically vibrating for 40-60s, rolling for 3-5min and reversely upsetting for 2-4 times, and then putting 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 sizing material in the rubber sleeve, placing the sizing material in a vacuum sintering furnace, firstly heating to 200-;
s4, consumable smelting:
Placing the sintered electrode bar 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-cooled crystallizer in a droplet mode to be solidified into a CuTi alloy ingot;
s5, discharging:
and after the smelting is finished, cooling for 15min and discharging.
Furthermore, atomized copper powder is adopted as the copper powder, the granularity of the copper powder is 20-60 mu m, the granularity of the sponge titanium 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 includes:
s3-1: 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxylated nitrile rubber are placed into a mixer to be mixed for 30min, and a mixture is obtained after uniform mixing;
s3-2: heating the obtained mixture at the temperature of 255-270 ℃ for 8-10min to obtain a liquid material;
s3-3: and 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 heating is finished, the mold is naturally cooled to obtain the rubber sleeve which is not easy to crack and has long service life.
Furthermore, 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 the final cast ingot is reduced.
Furthermore, the voltage of the vacuum consumable arc melting furnace is that the electrode bar is made to strike arc by adopting low voltage and high current, the melting is carried out by adopting a layer-by-layer melting mode, the melting rate is 30mm/min, and the efficiency of preparing the metal cast ingot by the method is high.
Further, the vacuum degree in the vacuum sintering furnace is 10-50pa, the vacuum environment is maintained, and metal oxidation is prevented;
further, in the step S4, the temperature rise rate in each temperature rise process in the vacuum sintering furnace is 5 to 8 ℃/min, and the finally formed material has better performance at such a temperature rise rate.
The preparation device used in the preparation method of the vacuum consumable arc melting copper-titanium alloy comprises an opposite-spraying mixer, a cold isostatic press, a vacuum sintering furnace and a vacuum consumable arc melting furnace, wherein the opposite-spraying mixer comprises a mixing bin, two raw material bins, a spraying device and a discharge port, the two raw material bins are fixed above two sides of the mixing bin, the upper end of the spraying device is communicated with the raw material bins, the inner end of the spraying device is communicated with the upper part of the mixing bin, the outer end of the spraying device is communicated with an external gas supply system, the bottom of the mixing bin is provided with a spiral stirrer, the discharge port 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 extends into the mixing bin, and the spiral stirring blade is fixedly connected with the stirring rod, the bottom of blending bunker is equipped with two air jets, the air jet communicates with each other with external gas supply system, and the blending bunker top is equipped with the air screen, makes the metal powder upward movement through the air jet, and rethread helical agitator stirs, and the mixed effect can be better.
The beneficial effects of the invention are:
the method can effectively avoid the condition that all constituent elements in the alloy generated in the induction melting method are unevenly distributed during crystallization when smelting the CuTi alloy, compared with a mixed-fraction sintering method, the CuTi alloy preparation method adopted by the invention can effectively avoid the defect of high gas content in the CuTi alloy in the mixed-fraction sintering method, and the CuTi alloy preparation method provided by the invention 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 of consumable melting in step S4 of the present invention.
FIG. 2 is a schematic structural diagram of a counter-jet 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, the mixing device comprises a mixing bin 1, a raw material bin 2, a material spraying device 3, a spiral stirrer 4, a discharge port 5, a motor 41, a spiral stirring blade 42, a stirring rod 43, an air jet 11 and an air filtering net 12.
Detailed Description
Example 1:
as shown in fig. 1, a preparation method of vacuum consumable arc melting copper-titanium alloy comprises the following steps:
s1, mixing materials:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and sponge titanium powder according to the proportion of 3.0 percent of Ti3 and Cu97 percent, filling the copper powder and the sponge titanium powder into a counter-spraying mixer for mixing for 3-6 hours, and obtaining a bagged mixture after mixing;
S2, pressing:
putting the uniformly mixed powder into a rubber sleeve, mechanically vibrating for 40s, rolling for 3min and reversely upsetting for 2 times, putting 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 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, wherein the preheating time is 2h, after the surface moisture of the sizing material is evaporated, heating to 450 ℃, keeping the temperature for 1.5h, then heating to 650 ℃, keeping the temperature for 1.5h, then heating to 900 ℃, keeping the temperature for 1.5h, then heating in the vacuum sintering furnace to 900 ℃, keeping the temperature for 1h, and obtaining an electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode bar into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 1000A, and the molten metal drops into a water-cooled crystallizer in a liquid drop mode to be solidified into a CuTi alloy ingot;
s5, discharging:
and after the smelting is finished, cooling for 15min and discharging.
The copper powder is 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 the best.
The preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber are put into a mixer to be mixed for 30min, and a mixture is obtained after uniform mixing;
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 heating is finished, the rubber sleeve is obtained after the mold is naturally cooled.
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 voltage of the vacuum consumable arc melting furnace is that the electrode bar is made to arc by adopting low voltage and high current, the melting is carried out by adopting a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency of preparing the metal ingot.
The vacuum degree in the vacuum sintering furnace is 10pa, the vacuum environment is kept, and metal oxidation is prevented;
in the step S4, the temperature rise rate in each temperature rise process in the vacuum sintering furnace is 5 ℃/min, and the finally formed material has better performance at the temperature rise rate.
Example 2:
as shown in fig. 1, a preparation method of vacuum consumable arc melting copper-titanium alloy comprises the following steps:
s1, mixing materials:
the raw materials comprise the following elements in percentage by mass: 3.2 percent of Ti3.2 percent and 96.8 percent of CuS, weighing the needed copper powder and sponge titanium powder according to the proportion, filling the copper powder and the sponge titanium powder into a counter-spraying mixer for mixing for 4 hours, and obtaining a bagged mixture after mixing;
s2, pressing:
putting the uniformly mixed powder into a rubber sleeve, then mechanically vibrating for 50s, rolling for 4min and reversely upsetting for 3 times, putting 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 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, wherein the preheating time is 3h, after the surface moisture of the sizing material is evaporated, heating to 450 ℃, keeping the temperature for 1.5h, then heating to 650 ℃, keeping the temperature for 1.5h, then heating to 900 ℃, keeping the temperature for 1.5h, then heating to 1000 ℃ in the vacuum sintering furnace, keeping the temperature for 2h, and obtaining an electrode rod after sintering;
S4, consumable smelting:
placing the sintered electrode bar into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 2000A, and the molten metal drops into a water-cooled crystallizer in a liquid drop mode to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after the smelting is finished, cooling for 15min and discharging.
The copper powder is 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 the best.
The preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber are put into a mixer to be mixed for 30min, and a mixture is obtained after uniform mixing;
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 heating is finished, the rubber sleeve is obtained after the mold is naturally cooled.
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 voltage of the vacuum consumable arc melting furnace is that the electrode bar is made to arc by adopting low voltage and high current, the melting is carried out by adopting a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency of preparing the metal ingot.
The vacuum degree in the vacuum sintering furnace is 30pa, the vacuum environment is maintained, and metal oxidation is prevented;
in 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 at such a heating rate.
Example 3:
as shown in fig. 1, a preparation method of vacuum consumable arc melting copper-titanium alloy comprises the following steps:
s1, mixing materials:
the raw materials comprise the following elements in percentage by mass: weighing the required copper powder and the sponge titanium powder according to the proportion of 3.5 percent of Tiand 96.5 percent of Cu96, and filling the copper powder and the sponge titanium powder into a counter-spraying mixer for mixing for 6 hours to obtain a bagged mixture after mixing;
s2, pressing:
putting the uniformly mixed powder into a rubber sleeve, mechanically vibrating for 60 seconds, rolling for 5min and reversely upsetting for 4 times, putting 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 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 300 ℃ for preheating, wherein the preheating time is 4h, after the surface moisture of the sizing material is evaporated, heating to 450 ℃, keeping the temperature for 1.5h, then heating to 650 ℃, keeping the temperature for 1.5h, then heating to 900 ℃, keeping the temperature for 1.5h, then heating to 1050 ℃, keeping the temperature for 3h in the vacuum sintering furnace, and obtaining the electrode rod after sintering;
s4, consumable smelting:
placing the sintered electrode bar into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 4000A, and the molten metal drops into a water-cooled crystallizer in a liquid drop mode to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after the smelting is finished, cooling for 15min and discharging.
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 the best.
The preparation method of the rubber sleeve in the step S3 comprises the following steps:
s3-1: 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber are put into a mixer to be mixed for 30min, and a mixture is obtained after uniform mixing;
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 heating is finished and the mold is naturally cooled, the rubber sleeve is obtained, is not easy to break and has long 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 voltage of the vacuum consumable arc melting furnace is that the electrode bar is started by adopting low voltage and high current, and melting is carried out by adopting a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency of preparing metal ingots.
The vacuum degree in the vacuum sintering furnace is 50pa, the vacuum environment is maintained, and metal oxidation is prevented;
in 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 at such a heating rate.
Comparative example 1 to example 3, example 3 produced the best final ingot properties.
Example 4:
As shown in fig. 1, a preparation method of vacuum consumable arc melting copper-titanium alloy comprises the following steps:
s1, mixing materials:
the raw materials comprise the following elements in percentage by mass: 3.5 percent of Ti3.5 percent and 96.5 percent of Cu96.5 percent, weighing the needed copper powder and sponge titanium powder according to the proportion, filling the copper powder and the sponge titanium powder into a counter-spraying mixer for mixing for 6 hours, and obtaining a bagged mixture after mixing;
s2, pressing:
putting the uniformly mixed powder into a rubber sleeve, mechanically vibrating for 60 seconds, rolling for 5min and reversely upsetting for 4 times, putting 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 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 300 ℃ for preheating, wherein the preheating time is 4h, after the surface moisture of the sizing material is evaporated, heating to 450 ℃, keeping the temperature for 1.5h, then heating to 650 ℃, keeping the temperature for 1.5h, then heating to 900 ℃, keeping the temperature for 1.5h, then heating to 1050 ℃, keeping the temperature for 3h in the vacuum sintering furnace, and obtaining the electrode rod after sintering;
S4, consumable smelting:
placing the sintered electrode bar into a vacuum consumable arc melting furnace for arc melting, wherein the melting current is 4000A, and the molten metal drops into a water-cooled crystallizer in a liquid drop mode to be solidified into a CuTi alloy cast ingot;
s5, discharging:
and after the smelting is finished, cooling for 15min and discharging.
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 the best.
The preparation method of the rubber sleeve comprises the following steps:
s3-1: 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxyl nitrile rubber are put into a mixer to be mixed for 30min, and a mixture is obtained after uniform mixing;
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 heating is finished, the rubber sleeve is obtained after the mold is naturally cooled.
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 voltage of the vacuum consumable arc melting furnace is that the electrode bar is started by adopting low voltage and high current, and melting is carried out by adopting a layer-by-layer melting mode, the melting rate is 30mm/min, and the method has high efficiency of preparing metal ingots.
The vacuum degree in the vacuum sintering furnace is 50pa, the vacuum environment is maintained, and metal oxidation is prevented;
in the step S4, the temperature rise rate in each temperature rise process in the vacuum sintering furnace is 8 ℃/min, and the finally formed material has better performance at the temperature rise rate.
As shown in fig. 2, the apparatus for preparing a vacuum consumable arc melted copper-titanium alloy of this embodiment comprises a butt-jet mixer, a cold isostatic press, a vacuum sintering furnace, and a vacuum consumable arc melting furnace, wherein the butt-jet mixer comprises a mixing bin 1, two raw material bins 2, a material spraying device 3, and a material outlet 5, the two raw material bins 2 are fixed above two sides of the mixing bin 1, the upper end of the material spraying device 3 is communicated with the raw material bins 2, the inner end is communicated with the upper side of the mixing bin 1, the outer end is communicated with an external air supply system, the bottom of the mixing bin 1 is provided with a helical stirrer 4, the material outlet 5 is arranged at one side of the bottom of the mixing bin 1, the helical stirrer 4 comprises a motor 41, a helical stirring blade 42, and a stirring rod 43, the motor 41 is fixed below the mixing bin 1, the stirring rod 43 is driven by an output shaft of the motor 41, the stirring rod 43 penetrates through the bottom of the mixing bin 1 and extends into the mixing bin 1, spiral stirring vane 42 and puddler 43 fixed connection, the bottom of blending bunker 1 is equipped with two air jets 11, and air jet 11 communicates with each other with external air supply system, and the blending bunker top is equipped with air filter 12, makes metal powder upward movement through air jet 11, and rethread spiral stirrer 4 stirs, and the mixed effect can be better.
Compared with the embodiment 3, the embodiment 4 has the best mixing effect and the highest efficiency by adopting the opposite spraying mixer in the embodiment 4.
The motor 41 used in embodiment 4 is a commercially available product as long as it can perform the functions of the present invention, and those skilled in the art can select and use the motor according to the 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 testing of CuTi alloys
As shown in FIG. 3, FIG. 3 shows the metallographic structure of a CuTi alloy having a Ti content of 3.5% at 100X.
Claims (8)
1. A preparation method for smelting copper-titanium alloy by vacuum consumable arc is characterized by comprising the following steps:
s1, mixing materials:
the raw materials comprise the following elements in percentage by mass: 3.0 to 3.5 percent of Ti3.5 percent of Cu96.5 to 97.0 percent of CuTi powder, and the required copper powder and sponge titanium powder are weighed according to the proportion and are put into a counter-spraying mixer for mixing for 3 to 6 hours to obtain a bagged mixture after the mixing is finished;
s2, pressing:
putting the uniformly mixed powder into a rubber sleeve, then mechanically vibrating for 40-60s, rolling for 3-5min and reversely upsetting for 2-4 times, putting 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 sizing material in the rubber sleeve, placing the sizing material in a vacuum sintering furnace, firstly heating to 200-;
s4, consumable smelting:
placing the sintered electrode bar 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-cooled crystallizer in a liquid drop mode to be solidified into a CuTi alloy ingot;
s5, discharging:
and after the smelting is finished, cooling for 15min and discharging.
2. The method for preparing a vacuum consumable arc melted copper-titanium alloy as claimed in claim 1, wherein atomized copper powder is used as the copper powder, the granularity of the copper powder is 20-60 μm, and the granularity of the titanium sponge is 1-5 mm.
3. The method for preparing a vacuum consumable arc melting copper-titanium alloy according to claim 1, wherein the method for preparing the rubber sleeve in the step S3 comprises the following steps:
S3-1: 30 parts of superfine denier polyester fiber, 40 parts of polymethacrylate and 55 parts of carboxylated nitrile rubber are placed into a mixer to be mixed for 30min, and a mixture is obtained after uniform mixing;
s3-2: heating the obtained mixture at the temperature of 255-270 ℃ for 8-10min to obtain a liquid material;
s3-3: and introducing the liquid material obtained after heating into a mold for heating, wherein the heating temperature is 260-280 ℃, the heating time is 20-30min, and after the heating is finished, the rubber sleeve is obtained after the mold is naturally cooled.
4. The method for preparing the vacuum consumable arc melting copper-titanium alloy according to claim 1, wherein the vacuum degree of the vacuum consumable arc melting furnace is 0.01-0.002 pa.
5. The method for preparing the vacuum consumable arc melting copper-titanium alloy according to claim 1, wherein the voltage of the vacuum consumable arc melting furnace is that the electrode rod is started by low voltage and high current, and melting is carried out by means of layer-by-layer melting, and the melting rate is 30 mm/min.
6. The method for preparing the vacuum consumable arc melting copper-titanium alloy according to claim 1, wherein the vacuum consumable arc melting is performed by means of layer-by-layer ablation, and the melting rate is 30 mm/min.
7. The method for preparing a vacuum consumable arc melting copper-titanium alloy according to claim 1, wherein the temperature rise rate in each temperature rise process in the vacuum sintering furnace in step S4 is 5-8 ℃/min.
8. A preparation device for vacuum consumable arc melting of copper and titanium alloy is characterized by comprising a butt-jet mixer, a cold isostatic press, a vacuum sintering furnace and a vacuum consumable arc melting furnace, wherein the butt-jet mixer comprises a mixing bin (1), two raw material bins (2), a material 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 material spraying device (3) is communicated with the raw material bin (2), the inner end of the upper end of the mixing bin (1) is communicated with the upper part of the mixing bin (1), the outer end of the upper end of the mixing bin is communicated with an external gas supply system, a spiral stirrer (4) is arranged at the bottom of the mixing bin (1), the discharge port (5) is arranged at one side of the bottom of the mixing bin (1), spiral agitator (4) are including motor (41), spiral stirring vane (42), puddler (43), motor (41) are fixed blending bunker (1) below, the output shaft transmission of puddler (43) and motor (41), inside puddler (43) passed blending bunker (1) bottom and stretched into blending bunker (1), spiral stirring vane (42) and puddler (43) fixed connection, the bottom of blending bunker (1) is equipped with two air jet (11), air jet (11) communicate with each other with external air supply system, and the blending bunker top is equipped with air filter (12).
Priority Applications (1)
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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 |
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| 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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| 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 |
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