CN115094269A - Titanium alloy powder, method and tool for producing the same - Google Patents
Titanium alloy powder, method and tool for producing the same Download PDFInfo
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- CN115094269A CN115094269A CN202210752457.2A CN202210752457A CN115094269A CN 115094269 A CN115094269 A CN 115094269A CN 202210752457 A CN202210752457 A CN 202210752457A CN 115094269 A CN115094269 A CN 115094269A
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- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title description 3
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 14
- 239000000956 alloy Substances 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 12
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002245 particle Substances 0.000 claims abstract description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000010936 titanium Substances 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 229910018125 Al-Si Inorganic materials 0.000 claims abstract description 4
- 229910018520 Al—Si Inorganic materials 0.000 claims abstract description 4
- 235000010627 Phaseolus vulgaris Nutrition 0.000 claims abstract description 4
- 244000046052 Phaseolus vulgaris Species 0.000 claims abstract description 4
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000000889 atomisation Methods 0.000 claims abstract description 4
- 239000011888 foil Substances 0.000 claims abstract description 4
- 238000005242 forging Methods 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 69
- 238000007789 sealing Methods 0.000 claims description 32
- 230000005540 biological transmission Effects 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910008933 Sn—Nb Inorganic materials 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 238000004663 powder metallurgy Methods 0.000 description 7
- 238000009864 tensile test Methods 0.000 description 4
- 238000001513 hot isostatic pressing Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000015842 Hesperis Nutrition 0.000 description 1
- 235000012633 Iberis amara Nutrition 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C14/00—Alloys based on titanium
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
-
- 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
- B22F9/14—Making metallic powder or suspensions thereof using physical processes using electric discharge
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to the technical field of titanium alloy, in particular to titanium alloy powder, a preparation method and a preparation tool, wherein 0-grade small-particle sponge titanium, Al-Mo, Al-Si, Al-Nb intermediate alloy, Sn particles, aluminum beans and aluminum foil are used as raw materials, and the content of O is controlled not to exceed 0.1 wt%; smelting by using a vacuum non-consumable arc furnace to prepare an alloy ingot, cogging, forging and rolling the alloy ingot into a bar with phi 60mm, and using the bar to prepare subsequent spherical powder; and preparing titanium alloy spherical powder by adopting a plasma rotating electrode atomization method. The alloy has no obvious regularity characteristic in room temperature ultimate tensile strength along with the change of the forming temperature, and the room temperature elongation rate has the change trend of being obviously improved along with the increase of the forming temperature and has an obvious positive correlation with the forming temperature.
Description
Technical Field
The invention relates to the technical field of titanium alloy, in particular to titanium alloy powder, a preparation method and a preparation tool.
Background
The titanium alloy refers to a plurality of alloy metals made of titanium and other metals, has high strength, good corrosion resistance and high heat resistance, and is mainly a high-temperature titanium alloy for developing aeroengines and a structural titanium alloy for a machine body. At present, Chinese carrier rockets are developing towards the direction of high thrust, high reliability and reusability, and as a core high-speed rotating component in a liquid fuel rocket engine, a hydrogen pump impeller must have very high rotating speed and linear speed to meet the operation requirement of the engine, and a titanium alloy is required to have more excellent low-temperature strong plasticity matching, higher low-temperature mechanical property stability and higher abundance. However, the existing low-temperature titanium alloy in China cannot meet the use requirement of a new generation of high-thrust liquid fuel engine on a high-performance low-temperature titanium alloy in the future, and the development of an alpha-type or near-alpha-type powder metallurgy low-temperature titanium alloy with more excellent mechanical property in a 20K low-temperature environment is urgently needed, so that corresponding material technical reserve is provided for producing a hydrogen pump impeller component for the new generation of high-thrust oxyhydrogen engine meeting the performance requirement by adopting a hot isostatic pressure powder metallurgy technology.
Disclosure of Invention
In view of the above-mentioned disadvantages, the present invention aims to provide a titanium alloy powder, a method for producing the same, and a tool for producing the same.
The invention provides the following technical scheme:
a titanium alloy powder is a Ti-Al-Si-Mo-Sn-Nb series near-alpha type powder.
A preparation method of titanium alloy powder comprises the following steps:
s1, adopting 0-grade small-particle sponge titanium, Al-Mo, Al-Si, Al-Nb intermediate alloy, Sn particles, aluminum beans and aluminum foil as raw materials, and controlling the content of O not to exceed 0.1 wt%;
s2, preparing an alloy ingot by smelting in a vacuum non-consumable electric arc furnace, cogging, forging and rolling the alloy ingot into a bar with the diameter of 60mm, and using the bar for preparing subsequent spherical powder;
and S3, preparing titanium alloy spherical powder by adopting a plasma rotating electrode atomization method.
The utility model provides a preparation instrument of titanium alloy powder, includes furnace body and vacuum apparatus, still includes electrode rotary device and plasma gun device, electrode rotary device sets up one side of furnace body, plasma gun device sets up the opposite side of furnace body, the furnace body pass through the connecting tube connect in vacuum apparatus.
Further, the electrode rotating device comprises a rotating motor, a coupler, a power transmission liquid transmission cavity, a brushless electrode, a power transmission liquid cooling cavity, a power transmission electrode, an anode rod, a contact component and a base; the brushless electrode is arranged in the power transmission cavity, one end of the brushless electrode is connected to the rotating motor through the coupler, the other end of the brushless electrode is connected to the anode rod, the anode rod seals the cavity in the furnace body through the contact part, and the rotating motor is installed on the base.
Furthermore, the contact part comprises an installation ferrule rotating along with the anode rod and an installation ferrule fixed on the furnace body, the whole installation ferrule rotating along with the anode rod is semicircular and comprises a first rotary installation ring, a second rotary installation ring and a third rotary connection installation ring which are vertically arranged along the center line of the anode rod, a copper support ring is sleeved and connected on the outer side of the first rotary installation ring, the support ring is semicircular, the first rotary installation ring is sleeved and fixedly connected on the anode rod, and a sealing layer made of an alumina ceramic material is arranged on the outer surface of the first rotary installation ring;
the section of the mounting ring fixed on the furnace body is semicircular, the mounting ring comprises a first fixed mounting ring, a second fixed mounting ring and a third fixed connection mounting ring, the first fixed mounting ring, the second fixed mounting ring and the third fixed connection mounting ring are arranged along the center line of an anode rod, the second fixed mounting ring is hollow, a mounting opening is formed in one end, far away from the cavity, of the second fixed mounting ring, a fixing ring close to the furnace body is arranged on the furnace body, the fixing ring is fixedly connected to the furnace body through a tensioning screw rod, an adaptive ring and a pressing piece are arranged on one side, far away from the cavity, of the fixing ring, the adaptive ring is matched in the mounting opening, the pressing piece is arranged on the outer surface of the second fixed mounting ring, a second tensioning screw is arranged on the pressing piece, the head of the second tensioning screw presses the second fixed mounting ring, and the second fixed mounting ring and the fixing ring are locked;
the installation ring rotating along with the anode rod and the installation ring fixed on the furnace body are installed in a matched mode, the second fixed installation ring is matched between the first rotating installation ring and the second rotating installation ring, the installation ring rotating along with the anode rod and the installation ring fixed on the furnace body are matched to form a bent chamber, a first inverted Y-shaped contact element and a second inverted Y-shaped contact element are arranged on one side, close to the anode rod, of the section of the first fixed installation ring, the contact element and the contact element are respectively provided with a plurality of contact elements, the contact surfaces of the first contact element and the contact element are tightly matched with a sealing layer of the first rotating installation ring, and at least one sealing protrusion is respectively arranged on the inner side surface and the outer side surface of the second rotating installation ring, on the surface, close to the bent chamber, of the second fixed installation ring and on the outer surface of the first fixed installation ring.
Furthermore, one side of the anode rod, which is far away from the furnace body, is provided with a right-angle block, the right-angle block is provided with a first tension screw, and the lower end face of the first tension screw presses the sealing layer and the first rotary mounting ring to lock the first rotary mounting ring and the anode rod.
Furthermore, a copper support ring is sleeved on the outer side of the first rotary installation ring, and the support ring is semicircular.
Furthermore, a semicircular elastic piece is arranged in an installation ferrule fixed on the furnace body, the elastic piece is tightly arranged on the surfaces of the second fixed installation ring, the third fixed connection installation ring and the first fixed installation ring, and the first contact piece and the second contact piece are kept in a tensioning state and tightly attached to the surface of the sealing layer under the action of the strain force of the elastic piece.
Furthermore, through holes are arranged in the bottom of the sealing protrusion on the second fixed mounting ring and the sealing protrusion on the surface of the second rotary mounting ring, and a plurality of through holes are arranged on the side wall of the furnace body.
Further, the plasma gun device comprises a plasma gun mounting table, an armature, a supporting seat, a plasma gun and a sealing ring; the plasma gun is arranged on the plasma gun mounting table through the armature, the plasma gun is positioned in the furnace body, the central line of the plasma gun is collinear with the central line of the anode bar, the armature is connected to the furnace body through a sealing ring, and the plasma mounting seat is arranged on the supporting seat.
The invention has the beneficial effects that:
1. the alloy has the advantages that the room temperature ultimate tensile strength does not show obvious regularity characteristics along with the change of the forming temperature, the room temperature elongation rate has the change trend which is obviously improved along with the increase of the forming temperature, and the room temperature elongation rate and the forming temperature show obvious positive correlation;
2. the installation ferrule rotating along with the anode rod and the installation ferrule fixed on the furnace body are installed in a matched mode, the second fixed installation ring is matched between the first rotating installation ring and the second rotating installation ring, the installation ferrule rotating along with the anode rod and the installation ferrule fixed on the furnace body are matched to form a curve-shaped chamber, and the first contact piece and the second contact piece are kept in a tensioned state and are tightly attached to the surface of the sealing stop layer under the action of the strain force of the elastic piece;
3. the furnace body is provided with a fixing ring which is close to the furnace body, the fixing ring is fixedly connected to the furnace body through a tension lead screw, one side, away from the cavity, of the fixing ring is provided with an adaptation ring and a pressing piece, the adaptation ring is matched in the mounting opening, the pressing piece is arranged on the outer surface of the second fixed mounting ring, the pressing piece is provided with a second tension screw, and the head of the second tension screw presses the second fixed mounting ring to lock the second fixed mounting ring and the fixing ring;
4. the powder conveyed to the curve-shaped chamber from the cavity is close to the second fixed mounting ring under the action of impulse deviating from the rotation center of the mounting ring rotating along with the anode rod, then flows to the lower end through the inner surface of the second fixed mounting ring, and flows to the cavity through the through hole in the sealing protrusion and the through hole in the furnace body 1 to form a cycle.
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 view of a manufacturing process;
FIG. 2 is a schematic view of the structure of a preparation apparatus;
FIG. 3 is a schematic view of the structure of the contact member;
labeled as: 11. a furnace body; 12. a rotating electric machine; 13. a coupling; 14. a transmission fluid transmission cavity; 15. a brushless electrode; 16. a transmission liquid cooling chamber; 17. a power transmission electrode; 18. an anode rod; 19. a contact member; 20. a base; 21. a plasma gun mounting table; 22. an armature; 23. a supporting seat; 24. a plasma gun; 25. a seal ring;
111. a cavity;
191. a first rotating mounting ring; 192. a second rotary mounting ring; 193. a third rotary connection mounting ring; 194. a sealing layer; 195. a first fixed mounting ring; 196. a second fixed mounting ring; 197. the third fixed connection mounting ring; 198. a fixing ring; 199. tensioning a screw rod; 200. a curve-shaped chamber; 201. a first contact element; 202. a second contact element; 203. sealing protrusions; 204. a right-angle block; 205. tensioning the first screw; 206. a support ring; 207. an elastic member; 208. a through hole; 209. an installation port; 210. an adaptation ring; 211. a compression member; 212. tensioning a second screw;
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.
A titanium alloy powder is a Ti-Al-Si-Mo-Sn-Nb series near-alpha type powder.
As shown in fig. 1, a method for preparing titanium alloy powder comprises the following steps:
s1, adopting 0-grade small-particle sponge titanium, Al-Mo, Al-Si, Al-Nb intermediate alloy, Sn particles, aluminum beans and aluminum foil as raw materials, and controlling the O content to be not more than 0.1 wt%;
s2, smelting by using a vacuum non-consumable arc furnace to prepare an alloy ingot, cogging, forging and rolling into a bar with the diameter of 60mm, and using the bar to prepare subsequent spherical powder;
and S3, preparing titanium alloy spherical powder by adopting a plasma rotating electrode atomization method.
After the titanium alloy powder prepared by the process is used, a hot isostatic pressing machine is used for preparing a powder metallurgy material sample, and the sample size is phi 16mm x 250 mm.
Table 1 shows the results of tensile testing at room temperature for powder metallurgy titanium alloys prepared at different hot isostatic pressing temperatures
Table 2 shows 20K low temperature tensile test results for powder metallurgy titanium alloys prepared at different HIP's forming temperatures
Table 1 shows the results of room temperature tensile tests of powder metallurgy titanium alloys prepared at different hot isostatic pressing temperatures. It can be seen that the room temperature ultimate tensile strength of the alloy does not exhibit a distinct regularity characteristic as a function of forming temperature. However, the room temperature elongation rate has a trend of increasing significantly with the increase of the forming temperature, which shows a clear positive correlation with the forming temperature, and the sample prepared at 920 ℃ has the highest room temperature elongation rate (24%) and more ideal room temperature ultimate tensile strength (754 MPa). As can be seen from the 20K low temperature tensile test results in Table 2, consistent with the room temperature test results, the 20K low temperature ultimate tensile strength of the powder metallurgy titanium alloy is not greatly affected by the forming temperature change. As can be seen by comparison, the sample prepared at 920 ℃ has the highest elongation (19%) and relatively excellent ultimate tensile strength (1500 MPa). In general contrast, samples prepared at 920 ℃ had the best room temperature and low temperature strong plastic matches.
As shown in fig. 2 to 3, a titanium alloy powder preparation tool includes a furnace body 11 and a vacuum device, and further includes an electrode rotating device and a plasma gun device, the electrode rotating device is disposed on one side of the furnace body 11, the plasma gun device is disposed on the other side of the furnace body 11, and the furnace body 11 is connected to the vacuum device through a connecting pipe.
The electrode rotating device comprises a rotating motor 12, a coupler 13, a power transmission liquid transmission cavity 14, a brushless electrode 15, a power transmission liquid cooling cavity 16, a power transmission electrode 17, an anode rod 18, a contact component 19 and a base 20; the brushless electrode is disposed inside the power transmission chamber 14, one end of the brushless electrode is connected to the rotating electrical machine 12 through the coupling 13, the other end of the brushless electrode is connected to the anode rod 18, the front end of the anode rod 18 extends into the furnace body 11, the contact member 19 is provided between the anode rod 18 and the furnace body 11, and the rotating electrical machine (12) is mounted on a base (20).
The plasma gun device comprises a plasma gun mounting table 21, an armature 22, a supporting seat 23, a plasma gun 24 and a sealing ring 25; the plasma gun 24 is arranged on the plasma gun mounting table 21 through the armature 22, the plasma gun 24 is positioned in the furnace body 11, the central line of the plasma gun 24 is collinear with the central line of the anode bar 18, the armature 22 is connected to the furnace body 11 through a sealing ring 25, and the plasma mounting seat is arranged on the supporting seat 23.
The processing requirements of the furnace body 11 do not meet the standards, and the anode rod 18 rotates at high speed during the use to cause the abrasion of the furnace body 11, so that dust in the environment can enter a furnace chamber to stain the prepared titanium alloy powder, and the higher requirements are put on the contact part 19 between the furnace body 11 and the anode rod 18.
The contact component 19 is used for being installed between an anode rod 18 and a furnace body 11, the anode rod 18 extends into the furnace body 11, the anode rod 18 seals a cavity 111 in the furnace body 11 through the contact component 19, the contact component 19 comprises an installation ferrule rotating along with the anode rod and an installation ferrule fixed on the furnace body, the whole installation ferrule rotating along with the anode rod is semicircular, the installation ferrule comprises a first rotary installation ring 191, a second rotary installation ring 192 and a third rotary connection installation ring 193 vertically arranged along the center line of the anode rod 18, a copper-based support ring 206 is sleeved on the outer side of the first rotary installation ring 191, the support ring 206 is semicircular, the first rotary installation ring 191 is sleeved and fixedly connected on the anode rod 18, a right-angled block 204 is arranged on one side of the anode rod 18 far away from the furnace body 11, and a tension screw 205 is arranged on the right-angled block 204, the lower end face of the first tension screw 205 presses the sealing layer 194 and the first rotary mounting ring 191 to lock the first rotary mounting ring 191 and the anode rod 18, and the sealing layer 194 made of alumina ceramic material is arranged on the outer surface of the first rotary mounting ring 191.
The section of the mounting ring fixed on the furnace body is semicircular, the mounting ring comprises a first fixed mounting ring 195 and a second fixed mounting ring 196 which are arranged along the center line of the anode rod 18, and a third fixed connection mounting ring 197 which is vertically arranged, the second fixed mounting ring 196 is in a hollow shape, a mounting opening 209 is arranged at one end of the second fixed mounting ring, which is far away from the cavity 111, on the furnace body 11, a fixing ring 198 which is close to the furnace body 11 is arranged on the furnace body 11, the fixing ring 198 is fixedly connected to the furnace body 11 through a tension screw 199, an adapting ring 210 and a pressing piece 214 are arranged at one side of the fixing ring 198, which is far away from the cavity 111, the adapting ring 210 is matched in the mounting opening 209, the pressing piece 214 is arranged on the outer surface of the second fixed mounting ring 196, a second tension screw 215 is arranged on the pressing piece 214, and the head of the second tension screw 215 presses the second fixed mounting ring 196, locking the second fixed mounting ring 196 and the fixed ring 198; utilize in this application that fixed ring 198 is inseparable to install in the side of furnace body 11, fixed ring 198 has suitable strain capacity, can ensure its and furnace body 11 between the compactness. In addition, the adapter ring 210 is matched in the mounting opening 209 of the second fixed mounting ring 196, the central line of the mounting ring fixed on the furnace body is collinear with the central line of the anode rod 18, the diameter direction of the mounting ring fixed on the furnace body is adjusted to be vertical to the central line of the anode rod 18, and after the operation is finished, the second tensioning screw 215 is screwed, so that the fixed ring 198 and the second fixed mounting ring 196 are fixedly connected. The mechanical structure can be used for tightly installing the installation ferrule fixed on the furnace body, thereby avoiding the entry of pollutants in the environment.
The installation ferrule rotating along with the anode rod and the installation ferrule fixed on the furnace body are installed in a matching way, the second fixed installation ring 196 is matched between the first rotating installation ring 191 and the second rotating installation ring 192, the installation ferrule rotating along with the anode rod and the installation ferrule fixed on the furnace body are matched to form a curve-shaped chamber 200, the section of the first fixed installation ring 195 and the side close to the anode rod 18 are provided with a first contact piece 201 and a second contact piece 202 in an inverted Y shape, the first contact piece 201 and the second contact piece 202 are respectively provided with a plurality of contact pieces, the contact surfaces of the first contact piece 201 and the second contact piece 202 are tightly matched with the sealing layer 194 of the first rotating installation ring 191, the installation ferrule fixed on the furnace body is provided with a semicircular elastic piece 207, and the elastic piece 207 is tightly arranged on the surfaces of the second fixed installation ring 196, the third fixed connection installation ring 197 and the first fixed installation ring 195, the first contact 201 and the second contact 202 are kept in a tensioned state and tightly attached to the surface of the sealing layer 194 through the action of the strain force of the elastic member 207. If the device works for a long time, a certain loss of the first contact 201 and the second contact 202 is caused, however, the first contact 201 and the second contact 202 are kept in elastic force by the strain force of the elastic member 207, so as to be in close contact with the sealing layer 194. In addition, the sealing layer 194 is made of an alumina ceramic material, thereby improving the working cycle of the device. At least one sealing protrusion 203 is disposed on each of the inner and outer side surfaces of the second rotary mounting ring 192, the surface of the second stationary mounting ring 196 adjacent to the curved chamber 200, and the outer surface of the first stationary mounting ring 195. Through holes 208 are arranged in the bottom of the seal stop protrusion 203 on the second fixed mounting ring 196 and the seal stop protrusion 203 on the surface of the second rotary mounting ring 192, and a plurality of through holes 208 are arranged on the side wall of the furnace body 11. The powder conveyed from the cavity 111 to the curve-shaped chamber 200 approaches to the second fixed mounting ring 196 under the action of the impulse deviating from the rotation center of the mounting ring rotating along with the anode rod, then flows to the lower end through the inner surface of the second fixed mounting ring 196, and flows into the cavity 111 through the through hole 208 in the seal stopping protrusion 203 and the through hole 208 on the furnace body 11 to form a cycle.
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 (10)
1. A titanium alloy powder is characterized by being a Ti-Al-Si-Mo-Sn-Nb series near-alpha type powder.
2. The preparation method of the titanium alloy powder is characterized by comprising the following steps:
s1, adopting 0-grade small-particle sponge titanium, Al-Mo, Al-Si, Al-Nb intermediate alloy, Sn particles, aluminum beans and aluminum foil as raw materials, and controlling the O content to be not more than 0.1 wt%;
s2, smelting by using a vacuum non-consumable arc furnace to prepare an alloy ingot, cogging, forging and rolling into a bar with the diameter of 60mm, and using the bar to prepare subsequent spherical powder;
and S3, preparing titanium alloy spherical powder by adopting a plasma rotating electrode atomization method.
3. The titanium alloy powder preparation tool comprises a furnace body (11) and a vacuum device, and is characterized by further comprising an electrode rotating device and a plasma gun device, wherein the electrode rotating device is arranged on one side of the furnace body (11), the plasma gun device is arranged on the other side of the furnace body (11), and the furnace body (11) is connected to the vacuum device through a connecting pipeline.
4. The tool according to claim 3, characterized in that said electrode rotation means comprise a rotating electrical machine (12), a coupling (13), a transmission fluid transmission chamber (14), a brushless electrode (15), a transmission fluid cooling chamber (16), a transmission electrode (17), an anode rod (18), a contact member (19) and a base (20); the brushless electrode (15) is arranged in the power transmission liquid transmission cavity (14), one end of the brushless electrode is connected to the rotating motor (12) through the coupler (13), the other end of the brushless electrode is connected to the anode rod (18), the anode rod (18) seals a cavity (111) in the furnace body (11) through the contact component (19), and the rotating motor (12) is installed on the base (20).
5. The tool for making the alloy according to claim 4, wherein the contact part (19) comprises a mounting collar rotating along the anode rod and a mounting collar fixed on the furnace body, the whole mounting collar rotating along the anode rod is semicircular, the mounting collar comprises a first rotary mounting ring (191), a second rotary mounting ring (192) and a third rotary connecting mounting ring (193) which are vertically arranged, the outer side of the first rotary mounting ring (191) is sleeved and connected with a copper support ring (206), the support ring (206) is semicircular, the first rotary mounting ring (191) is sleeved and connected on the anode rod (18), and the outer surface of the first rotary mounting ring (191) is provided with a sealing layer (194) made of alumina ceramic material;
the section of the mounting ring fixed on the furnace body is semicircular, the mounting ring comprises a first fixed mounting ring (195) and a second fixed mounting ring (196) which are arranged along the center line of an anode rod (18) and a third fixed connection mounting ring (197) which is vertically arranged, the second fixed mounting ring (196) is in a hollow shape, one end of the second fixed mounting ring (196) far away from the cavity (111) is provided with a mounting hole (209), the furnace body (11) is provided with a fixing ring (198) which is close to the furnace body (11), the fixing ring (198) is fixedly connected to the furnace body (11) through a tension screw (199), one side of the fixing ring (198) far away from the cavity (111) is provided with an adaptation ring (210) and a pressing piece (214), the adaptation ring (210) is matched in the mounting hole (209), and the pressing piece (214) is arranged on the outer surface of the second fixed mounting ring (196), a second tensioning screw (215) is arranged on the pressing piece (214), and the head of the second tensioning screw (215) presses the second fixed mounting ring (196) to lock the second fixed mounting ring (196) and the fixing ring (198);
the installation ring rotating along with the anode rod and the installation ring fixed on the furnace body are installed in a matched mode, the second fixed installation ring (196) is matched between the first rotating installation ring (191) and the second rotating installation ring (192), the installation ring rotating along with the anode rod and the installation ring fixed on the furnace body are matched to form a bent chamber (200), one side, close to the anode rod (18), of the cross section of the first fixed installation ring (195) is provided with a first contact piece (201) and a second contact piece (202) in an inverted Y shape, the first contact piece (201) and the second contact piece (202) are respectively provided with a plurality of contact pieces, the contact surfaces of the first contact piece (201) and the second contact piece (202) are tightly matched with a sealing layer (194) of the first rotating installation ring (191), the inner side surface and the outer side surface of the second rotating installation ring (192), the surface, close to the bent chamber (200), of the second fixed installation ring (196), and the first fixed installation ring (195) At least one sealing protrusion (203) is arranged on each outer surface of the sealing ring.
6. The tool for making according to claim 5, characterized in that a right-angle block (204) is arranged on one side of the anode rod (18) far away from the furnace body (11), a first tension screw (205) is arranged on the right-angle block (204), and the lower end surface of the first tension screw (205) presses the sealing layer (194) and the first rotary mounting ring (191) to lock the first rotary mounting ring (191) and the anode rod (18).
7. The tool according to claim 5, characterized in that a copper support ring (206) is sleeved on the outer side of the first rotary mounting ring (191), and the support ring (206) is semicircular.
8. The tool according to claim 5, characterized in that a semicircular elastic member (207) is arranged in the mounting ring fixed on the furnace body, the elastic member (207) is closely arranged on the surfaces of the second fixed mounting ring (196), the third fixed connection mounting ring (197) and the first fixed mounting ring (195), and the first contact member (201) and the second contact member (202) are kept in a tension state and closely attached to the surface of the sealing layer (194) through the action of the strain force of the elastic member (207).
9. The tool according to claim 5, characterized in that the bottom of the sealing protrusion (203) on the second stationary mounting ring (196) and the sealing protrusion (203) on the surface of the second rotary mounting ring (192) are provided with through holes (208), and the side wall of the furnace body (11) is provided with a plurality of through holes (208).
10. The tool according to claim 3, characterized in that the plasma gun arrangement comprises a plasma gun mount (21), an armature (22), a support seat (23), a plasma gun (24) and a sealing ring (25); plasma gun (24) are passed through armature (22) configuration is in on plasma gun mount table (21), plasma gun (24) are located in furnace body (11), its central line with anode bar (18) central line collineation, armature (22) pass through sealing washer (25) connect in furnace body (11), the configuration of plasma mount pad is in on supporting seat (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210752457.2A CN115094269A (en) | 2022-06-28 | 2022-06-28 | Titanium alloy powder, method and tool for producing the same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210752457.2A CN115094269A (en) | 2022-06-28 | 2022-06-28 | Titanium alloy powder, method and tool for producing the same |
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| CN203695961U (en) * | 2013-12-11 | 2014-07-09 | 湖南顶立科技有限公司 | Feed type rotating electrode powder preparing device adopting plasma gun |
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| CN114178538A (en) * | 2021-11-19 | 2022-03-15 | 西南交通大学 | Preparation method of ultrahigh-sphericity nanometer yttrium oxide dispersion-strengthened titanium alloy powder |
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2022
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| CN101327519A (en) * | 2008-07-18 | 2008-12-24 | 张建利 | Plasma rotating electrode milling machine group and technique |
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| CN114178538A (en) * | 2021-11-19 | 2022-03-15 | 西南交通大学 | Preparation method of ultrahigh-sphericity nanometer yttrium oxide dispersion-strengthened titanium alloy powder |
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Application publication date: 20220923 |