CN115261657B - Preparation method and preparation device of high-temperature alloy - Google Patents
Preparation method and preparation device of high-temperature alloy Download PDFInfo
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- CN115261657B CN115261657B CN202210929055.5A CN202210929055A CN115261657B CN 115261657 B CN115261657 B CN 115261657B CN 202210929055 A CN202210929055 A CN 202210929055A CN 115261657 B CN115261657 B CN 115261657B
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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
- C22C1/045—Alloys based on refractory metals
- C22C1/0458—Alloys based on titanium, zirconium or hafnium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1003—Use of special medium during sintering, e.g. sintering aid
- B22F3/1007—Atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Abstract
The invention relates to the technical field of high-temperature alloys, in particular to a preparation method and a preparation device of a high-temperature alloy, which comprises the following steps: preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; mechanically mixing the mixed powder in the step by a high-energy ball mill; and performing vacuum sintering on the obtained alloying powder in the step by using a vacuum sintering furnace. With the increasing content of the Ta element, the tensile strength of the prepared alloy material is slightly improved, however, the yield strength of the alloy material is remarkably increased.
Description
Technical Field
The invention relates to the technical field of high-temperature alloys, in particular to a preparation method and a preparation device of a high-temperature alloy.
Background
In recent years, with the popularization of automobile turbocharging technology, the demand for high-temperature alloys for turbocharging turbines has increased. The boost turbine is the core component of the supercharger, and its temperature tolerance and service life determine the operating temperature and stability of the entire supercharger. With the increase of the rotating speed and the reduction of the volume of the supercharger, the use temperature of the supercharger gradually rises, and the exhaust temperature reaches more than 1000 ℃ at present. In this case, the high-temperature performance of the turbine material, particularly the high-temperature mechanical performance represented by creep and endurance, is a key factor that determines the life of the turbocharger. TiAl alloy is widely applied to a booster turbine, but the mechanical property of the TiAl alloy does not meet the requirement of the booster turbine on strength.
Disclosure of Invention
In view of the above disadvantages, the present invention provides a method and an apparatus for preparing a high temperature alloy.
The invention provides the following technical scheme:
a preparation method of a high-temperature alloy comprises the following steps:
s1, preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein, the proportion of Ta powder, al powder and Ti powder is (0-6) 40 parts to 60 parts.
S2, mechanically mixing the mixed powder in the step S1 through a high-energy ball mill;
and S3, carrying out vacuum sintering on the alloying powder obtained in the step S2 through a vacuum sintering furnace.
Further, the specific steps of step S2 include:
firstly, cleaning a ball milling tank and zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
secondly, adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
and finally, after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
Further, the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2 hours.
A gas leakage prevention vacuum sintering furnace for high-temperature alloy comprises a sintering furnace body, a first cover nested in the sintering furnace body and a second cover arranged at the upper end of the first cover; the first cover comprises a connecting pipe and an upper shield plate fixed at the upper end of the connecting pipe, and a valve is arranged on the upper shield plate; an extension part is arranged at the upper end of the connecting pipe, a circular channel is formed in the extension part, a plurality of trapezoidal grooves are arrayed on the extension part along an arc, the trapezoidal grooves are arranged above the circular channel, the lower ends of the trapezoidal grooves extend into the circular channel, a felt pad is sleeved on the connecting pipe, and the felt pad is arranged below the extension part; the felt pad on the first cover is matched in the sintering furnace body, and the extending part is pressed at the upper end of the sintering furnace body; the second covers and installs first cover the surface, the second covers and sets up the first installing port that supplies the valve installation, the second covers and is equipped with the protruding that matches with a plurality of dovetail grooves, the second covers and is equipped with clamping piece.
Furthermore, the clamping piece is a lock catch, a connecting groove matched with the lock catch and a through second mounting hole are arranged on the second cover, and the lock catch is mounted on the second cover through the second mounting hole.
Further, the spread groove includes X axial spread groove and Y axial spread groove, X axial spread groove communicate in Y axial spread groove, X axial spread groove configuration is in the second covers the outward appearance, Y axial spread groove extends to along the Y axle the lower terminal surface that the second covered, X axial spread groove with the junction of Y axial spread groove is equipped with the installation piece, the second installing port configuration is in on the installation piece.
Furthermore, the device also comprises a handle, and the handle is arranged on the upper end surface of the second cover.
The beneficial effects of the invention are:
1. with the gradual increase of the content of the Ta element, the tensile strength of the prepared alloy material is slightly improved, however, the yield strength of the alloy material is obviously increased, and the yield strength of the alloy material is improved by about 200MPa in the seventh embodiment compared with the first embodiment. In addition, the elongation of the prepared alloy material is sharply reduced with the gradual increase of the content of the Ta element, and the elongation of the product of the example seven is about 13.8%. The microhardness is in positive correlation with the content of Ta element, and the microhardness of the alloy product of the seventh embodiment is 523.9HV; the impact absorption energy is slightly reduced at the beginning along with the gradual increase of the content of the Ta element, and the impact absorption energy is rapidly reduced when the content of the Ta element reaches a certain value;
2. during assembly, the protrusion on the second cover corresponds to the trapezoidal groove on the first cover, and the protrusion on the second cover enters the circular groove path through the trapezoidal groove during installation and is twisted, so that the protrusion and the trapezoidal groove are not in a vertical straight line, and the first cover and the second cover are locked. Aligning a Y-axis connecting groove on a second cover to a right-angle block on the sintering furnace body, and enabling the right-angle block to enter an X-axis connecting groove along the Y-axis direction, wherein a first cover is matched in the sintering furnace body, the extending part is pressed at the upper end of the sintering furnace body in a pressing mode, and a felt pad on the first cover is matched in the sintering furnace body and used for sealing and insulating heat; and twisting the second cover to enable the right-angle block to be located on the mounting block, wherein the second mounting port corresponds to the third mounting port, and the lock catch is inserted into the second mounting port and the third mounting port, so that the first cover is locked on the sintering furnace body through the second cover. During disassembly and assembly, the second cover is turned to enable the right-angle block to correspond to the Y-axis connecting groove, the protrusion on the second cover and the trapezoid groove are not located on one vertical straight line, the second cover and the first cover can be removed from the sintering furnace body 3 through the handle, and the whole assembly process is convenient and rapid.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a leak-proof vacuum sintering furnace;
FIG. 2 is a schematic structural view of a first cover;
FIG. 3 is a schematic side view of the first cover;
FIG. 4 is a schematic view of an assembled structure of the first cover;
FIG. 5 is a schematic structural view of a second cover;
FIG. 6 is a schematic bottom view of the second cover;
labeled as: 11. a first cover; 12. a second cover; 13. a sintering furnace body; 14. a grip; 15. a connecting pipe; 16. an upper shield plate; 17. a valve; 18. an extension portion; 19. a circular trench; 20. a trapezoidal groove; 21. a felt pad; 22. a first mounting port; 23. a clamping member; 24. connecting grooves; 25. a second mounting port; 26. an X-axis connecting groove; 27. a Y-axis connecting groove; 28. mounting blocks; 29. a protrusion; 30. a right-angle block; 31. a third mounting port;
Detailed Description
The conception, the specific structure and the technical effects produced by the present invention will be clearly and completely described in the following with reference to the embodiments and the accompanying drawings, so as to fully understand the objects, the schemes and the effects of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature or indirectly fixed or connected to the other feature. Further, the description of the upper, lower, left, right, etc. used in the present invention is only with respect to the positional relationship of the respective components of the present invention with respect to each other in the drawings.
Example one
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein the proportion of Ta powder, al powder and Ti powder is 0 part to 40 parts to 60 parts;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
and after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the alloying powder obtained in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2h.
Example two
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein the proportion of Ta powder, al powder and Ti powder is 1: 40: 60;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the alloying powder obtained in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2h.
EXAMPLE III
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein, the proportion of Ta powder, al powder and Ti powder is 2 parts to 40 parts to 60 parts;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the alloying powder obtained in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2h.
Example four
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein the proportion of the Ta powder, the Al powder and the Ti powder is 3 parts to 40 parts to 60 parts;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the alloying powder obtained in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2h.
EXAMPLE five
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein, the proportion of Ta powder, al powder and Ti powder is 4 parts to 40 parts to 60 parts;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
and after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the obtained alloying powder in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2 hours.
EXAMPLE six
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein, the proportion of Ta powder, al powder and Ti powder is 5 parts to 40 parts to 60 parts;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10;
and after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the obtained alloying powder in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2 hours.
EXAMPLE seven
A preparation method of a high-temperature alloy comprises the following steps:
preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein, the proportion of Ta powder, al powder and Ti powder is 6 parts to 40 parts to 60 parts;
cleaning the ball milling tank and the zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
and after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying.
And (3) carrying out vacuum sintering on the alloying powder obtained in the step through a vacuum sintering furnace, wherein the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2h.
Results and analysis of the experiments
Table 1 experimental data of examples one to seven
As can be seen from table 1, the tensile strength of the prepared alloy material is slightly improved with the gradual increase of the content of the Ta element, however, the yield strength is obviously increased, and the yield strength of the seventh embodiment is improved by about 200MPa compared with the first embodiment. In addition, the elongation of the prepared alloy material is rapidly deteriorated as the content of the Ta element is gradually increased, and the elongation of the product of example seven is about 13.8%. The microhardness is in positive correlation with the content of Ta element, and the microhardness of the alloy product of the seventh embodiment is 523.9HV; the impact absorption energy is slightly decreased at the beginning as the content of the Ta element is gradually increased, and the impact absorption energy is rapidly decreased when the content of the Ta element reaches a certain value.
The high temperature alloy material of this application preparation need calcine in the vacuum sintering stove again, need take the air in the furnace body out before the sintering, and the vacuum sintering stove among the prior art takes the air in the furnace body out through air exhaust device, needs opening the upper cover that can be convenient after sintering and cooling to open, need design out leak protection gas, the upper cover of convenient dismantlement.
As shown in fig. 1, the leak-proof vacuum sintering furnace comprises a sintering furnace body 13, a first cover 11 nested in the sintering furnace body 13, and a second cover 12 mounted on the upper end of the first cover 11.
As shown in fig. 2 and 3, the first cover 11 includes a connection pipe 15 and an upper shield 16 fixed to an upper end of the connection pipe 15, and a valve 17 is installed on the upper shield 16 for exhausting air or inputting an inert gas.
An extension part 18 is disposed at the upper end of the connection pipe 15, a circular channel 19 is opened on the extension part 18, a plurality of trapezoidal grooves 20 are arrayed along an arc on the extension part 18, the trapezoidal grooves 20 are disposed above the circular channel 19, and the lower ends of the trapezoidal grooves 20 extend into the circular channel 19. A felt 21 is fitted to the connection pipe 15, and the felt 21 is disposed below the extension 18. As shown in fig. 4, when the first cover 11 is fitted into the sintering furnace 13, the felt 21 on the first cover 11 is fitted into the sintering furnace 13 for sealing and heat insulation. The extension portion 18 is press-fitted to the upper end of the sintering furnace body 13.
The second cover 12 is installed on the outer surface of the first cover 11, as shown in fig. 5, a first installation opening 22 for installing the valve 17 is opened on the second cover 12. Referring to fig. 6, the second cover 12 is provided with protrusions 29 matching with the plurality of trapezoidal grooves 20, when the second cover 12 is mounted on the first cover 11, the protrusions 29 on the second cover 12 enter the circular channel 19 through the trapezoidal grooves 20 when mounted, and then are twisted to make the protrusions 29 and the trapezoidal grooves 20 not in a vertical line, thereby locking the first cover 11 and the second cover 12. When it is necessary to separate the second cover 12 from the first cover 11, the worker can detach the second cover 12 from the first cover 11 by twisting the protrusion 29 to a position corresponding to the trapezoidal groove 20. The second cover 12 is provided with a clamp 23 to prevent the second cover 12 from being separated from the sintering furnace body 13 when the first cover 11 and the second cover 12 are twisted relative to each other. Through the assembly relation among the first cover 11, the second cover 12 and the sintering furnace body 13, the rapid assembly of the sintering furnace is realized.
The number of the trapezoidal grooves 20 and the corresponding protrusions 29 of the second cover 12 is more than 3, so that the assembly therebetween is more secure.
The clamping element 23 is a lock catch, the second cover 12 is provided with a connecting groove 24 matched with the lock catch and a second mounting hole 25 penetrating through the connecting groove, and the lock catch is mounted on the second cover 12 through the second mounting hole 25. The connecting groove 24 includes X axial connecting groove 26 and Y axial connecting groove 27, X axial connecting groove 26 communicate in Y axial connecting groove 27, X axial connecting groove 26 configuration is in the second covers 12 outward appearance, Y axial connecting groove 27 extends to along the Y axle the second covers 12 lower terminal surface, X axial connecting groove 26 with Y axial connecting groove 27's junction is equipped with installation piece 28, second installing port 25 configuration is in on the installation piece 28. The sintering furnace body 13 is provided with a right-angle block 30 corresponding to the X-axis connecting groove 26, the right-angle block 30 is provided with a third mounting hole 31 corresponding to the second mounting hole 25, when the sintering furnace body 13 is mounted, the right-angle block 30 on the sintering furnace body 13 enters the X-axis connecting groove 26 from the Y-axis connecting groove 27, the second cover 12 is twisted, the right-angle block 30 is located on the mounting block 28, the second mounting hole 25 corresponds to the third mounting hole 31, and the lock catch is inserted into the second mounting hole 25 and the third mounting hole 31 to lock.
The 2 clamping elements 23 are arranged opposite each other on the second cover 12.
The device also comprises a handle 14, wherein the handle 14 is arranged on the upper end surface of the second cover 12, so that the assembly between the second cover 12 and the first cover 11 is convenient.
When the cover is assembled, the protrusion 29 of the second cover 12 corresponds to the trapezoidal groove 20 of the first cover 111, and when the protrusion 29 of the second cover 12 is assembled, it enters the circular groove 19 through the trapezoidal groove 20, and then it is twisted to make the protrusion 29 and the trapezoidal groove 20 not in a vertical line, thereby locking the first cover 11 and the second cover 12. Aligning the Y-axis connecting groove 27 of the second cover 12 with the right-angle block 30 of the sintering furnace body 13, so that the right-angle block 30 enters the X-axis connecting groove 26 along the Y-axis direction, wherein the first cover 11 is fitted into the sintering furnace body 13, the extending part 18 is pressed at the upper end of the sintering furnace body 13, and the felt pad 21 of the first cover 11 is fitted into the sintering furnace body 13 for sealing and heat insulation; the second cover 12 is twisted so that the right-angle block 30 is positioned on the mounting block 28, the second mounting opening 25 corresponds to the third mounting opening 31, and the lock catches are inserted into the second mounting opening 25 and the third mounting opening 31, thereby locking the first cover 11 to the sintering furnace body 13 through the second cover 12. When the second cover 12 is turned to disassemble and assemble, the right-angle block 30 corresponds to the Y-axis connecting groove 27, the protrusion 29 on the second cover 12 and the trapezoidal groove 20 are not in a vertical line, the second cover 12 and the first cover 11 can be disassembled from the sintering furnace body 13 through the handle 14, and the whole assembling process is convenient and quick.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The preparation method of the high-temperature alloy is characterized by comprising the following steps of:
s1, preparing Ta powder, al powder and Ti powder into mixed powder according to a certain mass ratio; wherein, the proportion of Ta powder, al powder and Ti powder is (1 to 6) 40 parts to 60 parts;
s2, mechanically mixing the mixed powder in the step S1 through a high-energy ball mill;
s3, carrying out vacuum sintering on the alloying powder obtained in the step S2 through a vacuum sintering furnace;
the specific steps of step S2 include:
firstly, cleaning a ball milling tank and zirconium balls by using alcohol, and drying the ball milling tank and the zirconium balls after cleaning;
secondly, adding the prepared metal powder and ethanol into a ball milling tank for high-speed ball milling; wherein the mass ratio of the zirconium balls to the powder is 10, the rotating speed of the ball mill is 800r/min, and the ball milling time is 1h;
finally, after the ball milling is finished, pouring the metal powder and the ethanol in the ball milling tank into a glass ware, and then putting the glass ware into an oven for drying;
the sintering temperature of the vacuum sintering furnace is 1000 ℃, and the heat preservation time is 2h;
the vacuum sintering furnace comprises a sintering furnace body, a first cover nested in the sintering furnace body and a second cover arranged at the upper end of the first cover; the first cover comprises a connecting pipe and an upper shield plate fixed at the upper end of the connecting pipe, and a valve is arranged on the upper shield plate; an extension part is arranged at the upper end of the connecting pipe, a circular channel is formed in the extension part, a plurality of trapezoidal grooves are arrayed on the extension part along an arc, the trapezoidal grooves are arranged above the circular channel, the lower ends of the trapezoidal grooves extend into the circular channel, a felt pad is sleeved on the connecting pipe, and the felt pad is arranged below the extension part; the felt pad on the first cover is matched in the sintering furnace body, and the extending part is pressed at the upper end of the sintering furnace body; the second covers and installs first cover the surface, the second covers and sets up the first installing port that supplies the valve installation, the second covers and is equipped with the protruding that matches with a plurality of dovetail grooves, the second covers and is equipped with clamping piece.
2. The method as claimed in claim 1, wherein the clamping member is a locking buckle, the second cover is provided with a connecting groove matching with the locking buckle and a second mounting opening therethrough, and the locking buckle is mounted on the second cover through the second mounting opening.
3. The method for preparing high-temperature alloy according to claim 2, wherein the connecting grooves include an X-axis connecting groove and a Y-axis connecting groove, the X-axis connecting groove is communicated with the Y-axis connecting groove, the X-axis connecting groove is disposed on the outer surface of the second cover, the Y-axis connecting groove extends to the lower end surface of the second cover along the Y-axis, a mounting block is disposed at a joint of the X-axis connecting groove and the Y-axis connecting groove, and the second mounting opening is disposed on the mounting block.
4. The method of claim 1, further comprising a handle attached to the second cover upper end surface.
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