CN113333765A - Spray forming and overspray powder collecting method and device - Google Patents
Spray forming and overspray powder collecting method and device Download PDFInfo
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- CN113333765A CN113333765A CN202110583311.5A CN202110583311A CN113333765A CN 113333765 A CN113333765 A CN 113333765A CN 202110583311 A CN202110583311 A CN 202110583311A CN 113333765 A CN113333765 A CN 113333765A
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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
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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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
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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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
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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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
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0896—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid particle transport, separation: process and apparatus
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The invention relates to a spray forming and over-sprayed powder collecting method and device, and belongs to the technical field of metal spray forming. The invention can quickly and effectively collect the over-sprayed powder in a grading way, thereby enlarging the application range and value of the over-sprayed powder; correspondingly, the device can effectively avoid melt oxidation, further improve the injection quality, and can carry out quick and effective fractional injection and collection on the over-sprayed powder while carrying out injection molding, thereby enlarging the application range and value of the over-sprayed powder. The collection method comprises the following steps: (a) melt jetting; (b) filtering and screening; (c) and (4) collecting the injection.
Description
Technical Field
The invention relates to a spray forming and over-sprayed powder collecting method and device, and belongs to the technical field of metal spray forming.
Background
Spray forming is a new technology for preparing massive materials which are compact as a whole and have fast solidification structures by combining atomization of liquid metal and deposition of atomized molten drops. Has the characteristics of short flow, small product segregation degree and fine grain structure. Compared with the traditional casting, the method has obvious economic and technical advantages, and is widely used for developing and developing high-performance materials, such as aluminum alloy, high-temperature titanium alloy, metal-based composite materials and the like.
In the prior art, when alloy liquid in a smelting furnace is transferred to a crucible, the alloy liquid on the surface layer is easy to oxidize with air to generate oxide skin and the like to influence the quality of a sprayed and deposited product, and when the alloy liquid is continuously transferred to a ladle, the efficiency of manually scooping up the metal liquid is low to influence the production efficiency, so that the liquid level in the crucible cannot be ensured to influence the spraying effect.
In addition, in the spray forming process of the alloy, the yield of spray deposition powder is 70-85%, a part of over-sprayed powder is gathered at the bottom of a deposition chamber, and in the recycling process of the over-sprayed powder, on one hand, oxidation deterioration can occur in the transfer process due to small particle size of the powder, and particularly, the influence on easily oxidized alloy powder such as titanium powder is more serious, on the other hand, the melt quality is influenced by the component proportion of the powder in the recycling process, and the production period and difficulty are increased in the recycling operation process.
Namely, the prior art has the following problems:
(1) only the basic process and method of spray deposition are involved, and no attention is paid to melt refinement and protection treatment in the melt transfer process.
(2) The prior spray forming technical patent has single collection and subsequent treatment of the over-sprayed powder and has larger limitation on the subsequent use of the over-sprayed powder.
Disclosure of Invention
The invention aims to provide a spray forming and over-sprayed powder collecting method, which is used for quickly and effectively collecting over-sprayed powder in a grading manner, so that the application range and the value of the over-sprayed powder are expanded; correspondingly, the invention provides a spray forming and overspray powder collecting device, which can effectively avoid melt oxidation, further improve the spray quality, and can quickly and effectively perform classified injection and collection on the overspray powder while spray forming, thereby expanding the application range and value of the overspray powder.
The invention relates to a spray forming and over-sprayed powder collecting method, which comprises the following steps:
(a) melt injection
Atomizing and spraying the smelted molten metal into a deposition chamber in a vacuum state, spraying a part of molten metal to a deposition plate to form a spray forming body, and forming overspray powder by the other part of molten metal;
(b) filtering and screening
Screening and grading the over-sprayed powder under a vacuum closed condition;
(c) collection by injection
And mixing the binder with the classified overspray powder under the condition of protective gas.
Preferably, in step (b), the classified overspray powder can be directly vacuum-sealed and packaged.
For the metal powder with weak oxidation degree, the metal powder can be directly packaged in a vacuum sealing way after being sieved in a grading way.
The invention relates to a device for realizing spray forming and over-sprayed powder collecting methods, which comprises the following steps: the bottom of the heat-preservation crucible is provided with a flow guide pipe, and the top of the heat-preservation crucible is provided with a sealing cover; the feeding mechanism is communicated with the heat-insulating crucible and is used for feeding materials to the heat-insulating crucible; the atomizer is connected to the tail end of the flow guide pipe; the deposition chamber is arranged at the outlet end of the atomizer, a deposition disc is arranged in the deposition chamber, a discharge channel is arranged at the bottom of the deposition chamber, and a vacuumizing tube is connected to the discharge channel; the screening bin is hermetically connected with the discharge channel; the screen is obliquely fixed on the inner wall of the screening bin; the first discharge pipe is arranged below the screen; a second discharge pipe arranged at the lower end of the screen mesh; and the powder mixing mechanism is hermetically connected with the first discharge pipe and the second discharge pipe respectively.
Preferably, the powder mixing mechanism comprises a first powder collecting box hermetically connected with the first discharge pipe; the second powder collecting box is hermetically connected with the second discharge port pipe; the first binder containing box is arranged on one side of the first powder collecting box; the second binder containing box is arranged on one side of the second powder collecting box; the first forming bin is hermetically connected with the first powder collecting box and the first binder containing box; the second forming bin is hermetically connected with the second powder collecting box and the second binder containing box; the first binder holds the case and the second binder holds and all is equipped with the protection gas and inserts the pipe on the case.
Preferably, the first powder collecting box and the first binder containing box are both connected with the first forming bin in a sealing mode through connecting pipes, the second powder collecting box and the second binder containing box are both connected with the second forming bin in a sealing mode through connecting pipes, and flow control valves are arranged on the connecting pipes.
The protective gas is respectively introduced into the binders of the first binder containing box and the second binder containing box through the protective gas access pipe, so that air is prevented from entering the forming bin along with the binders to pollute the powder, powder spraying and quantitative mixing of the binders are realized by controlling a flow valve on the connecting pipe, and finally injection and collection of the over-sprayed powder are realized in the forming bin.
Preferably, the feeding mechanism comprises a smelting crucible, a cover plate and a protective gas tank body which are hermetically connected to the top of the smelting crucible, the protective gas tank body is communicated with the smelting crucible through a pipeline, and the smelting crucible is communicated with the heat-insulating crucible through a communicating pipe.
When the device works, the metal liquid in the melting crucible flows into the heat-insulating crucible through the communicating pipe under the pressure action of the protective gas in the protective gas tank, the protective gas effectively avoids melt oxidation, and the pressure regulating valve can be arranged to regulate the liquid level in the heat-insulating crucible.
Preferably, a vibration motor is arranged on the screening bin.
Under vibrating motor's effect, the powder that gets into the screening storehouse can be according to the particle diameter quick grading, and the powder that the particle diameter is less than the screen cloth aperture falls into first discharging pipe, and the powder that the particle diameter is greater than the screen cloth aperture gets into the second discharging pipe along the slope screen cloth.
Preferably, a filter plate is horizontally arranged in the heat-preservation crucible. The oxide skin and the metal residue that probably exists in the metal liquid can be filtered to the filter, guarantees product quality to the honeycomb duct jam can be avoided to clean no foreign matter's fuse-element, improves and sprays formed body quality and improves production efficiency. The filter can be ceramic material, can select single-layer or multilayer filter according to the solution kind.
Preferably, the periphery of the heat-preservation crucible is provided with a heat-preservation layer.
Preferably, a grid is arranged in the discharge channel.
The working principle and the using process are as follows:
the metal raw material is put into a melting crucible for melting, the melt is electromagnetically stirred to ensure the components to be uniform, and the superheat degree of the melt can be adjusted according to the metal type in order to ensure the quality of the injection molded body. Before the spraying is started, the spraying distance is adjusted to be between 300 and 500mm, and the diameter of the draft tube is between 3 and 10 mm; vacuumizing the jet deposition chamber, and heating and insulating the heat-insulating crucible and the filter plate at a temperature not lower than the melting point of the metal; after the metal liquid is smelted, introducing nitrogen or inert gas into the smelting crucible by the protective gas tank body, and allowing the metal liquid in the smelting crucible to enter the heat-insulating crucible through the communicating pipe under the action of gas pressure; the outer sides of the communicating pipe and the heat-preserving crucible are packaged by heat-preserving and heat-insulating materials.
After the spraying is started, the temperature of the atomizing gas is normal temperature, the pressure is 0.5-1.2MPa, the flow rate of the metal liquid in the heat-insulating crucible is 7-15kg/min, along with the start of the spraying forming, a part of the metal liquid is sprayed and deposited on a deposition disc under the action of an atomizer to form a spraying forming body, the other part of the metal liquid becomes over-sprayed powder and falls into the bottom of a deposition chamber, and flaky and blocky solids mixed in the powder enter a screening bin after being filtered by grids. The aperture of the screen mesh is 30 mu m, the powder on the screen mesh is classified and sieved under the vibration action of the vibration motor, the powder with the particle size smaller than the aperture of the screen mesh enters the first powder collecting box, and the powder with the particle size larger than the aperture of the screen mesh enters the second powder collecting box. When powder in the powder collection box is injected and collected, a proper binder is selected according to the type of metal powder, and protective gas is introduced into the binder containing box, so that the powder can be prevented from being polluted by air along with the binder; then quantitative mixing is realized by controlling the flow control valves on the connecting pipes of the powder collecting box and the binder containing box, and finally sealed collection is realized in the forming bin.
The invention has the beneficial effects that: through setting up feeding mechanism, effectively avoid the fuse-element oxidation, further improve injection quality, mix powder mechanism through the setting and spray when taking shape, can carry out quick effectual hierarchical injection to the powder of excessively spraying and collect, enlarged the application scope and the value of the powder of excessively spraying.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment;
FIG. 2 is a metallographic structure diagram of a spray formed body;
FIG. 3 is a macro-morphogram of over-sprayed powder before sieving;
FIG. 4 shows a first microstructure after sieving with a powder-spraying sieve;
FIG. 5 shows a second microstructure after sieving with a powder-spraying sieve;
in the figure: 1. a heat preservation crucible; 2. a flow guide pipe; 3. a sealing cover; 4. a sealing cover; 5. a deposition chamber; 6. a deposition disc; 7. a discharge channel; 8. vacuumizing a tube; 9. screening the bin; 10. screening a screen; 11. a first discharge pipe; 12. a second discharge pipe; 13. a first dust collecting box; 14. a second powder collecting box; 15. a first binder holding tank; 16. a second binder holding tank; 17. a first forming bin; 18. a second forming bin; 19 a shielding gas access pipe; 20. a connecting pipe; 21. a flow control valve; 22. smelting a crucible; 23. a cover plate; 24. a protective gas tank body; 25. a communicating pipe; 26. a vibration motor; 27. a filter plate; 28. a heat-insulating layer; 29. a grid.
Detailed Description
The invention will be further explained with reference to the drawings.
The spray forming and overspray powder collecting method provided by the invention comprises the following steps:
(a) melt injection
Atomizing and spraying the smelted molten metal into a deposition chamber in a vacuum state, spraying a part of molten metal to a deposition plate to form a spray forming body, and forming overspray powder by the other part of molten metal;
(b) filtering and screening
Screening and grading the over-sprayed powder under a vacuum closed condition;
(c) collection by injection
And mixing the binder with the classified overspray powder under the condition of protective gas.
As shown in fig. 1-5, the apparatus for implementing the above method according to the present invention includes: the bottom of the heat-preservation crucible 1 is provided with a flow guide pipe 2, and the top of the heat-preservation crucible is provided with a sealing cover 3; the feeding mechanism is communicated with the heat-insulating crucible 1 and is used for feeding materials to the heat-insulating crucible 1; the atomizer 4 is connected to the tail end of the draft tube 2; a deposition chamber 5 arranged at the outlet end of the atomizer 4, wherein a deposition disc 6 is arranged in the deposition chamber, a discharge channel 7 is arranged at the bottom of the deposition chamber, and a vacuumizing tube 8 is connected on the discharge channel; the screening bin 9 is hermetically connected with the discharge channel 7; the screen 10 is obliquely fixed on the inner wall of the screening bin 9; a first discharge pipe 11 disposed below the screen mesh 10; a second discharge pipe 12 arranged at the lower end of the sieve screen 10; and a powder mixing mechanism hermetically connected with the first discharge pipe 11 and the second discharge pipe 12 respectively. The powder mixing mechanism comprises a first powder collecting box 13 hermetically connected with the first discharge pipe 11; a second dust collecting box 14 hermetically connected to the second discharge pipe 12; a first binder storage tank 15 provided on one side of the first dust collection tank 13; a second binder holding tank 16 provided on one side of the second dust collecting tank 14; a first forming bin 17 hermetically connected to the first dust collecting tank 13 and the first binder containing tank 15; and a second forming chamber 18 hermetically connected to the second dust collecting tank 14 and the second binder containing tank 16; and the first binder containing box 15 and the second binder containing box 16 are both provided with a protective gas access pipe 19. The first powder collecting box 13 and the first binder containing box 15 are both connected with the first forming bin 17 in a sealing mode through connecting pipes 20, the second powder collecting box 14 and the second binder containing box 16 are both connected with the second forming bin 18 in a sealing mode through connecting pipes 20, and flow control valves 21 are arranged on the connecting pipes 20. The feeding mechanism comprises a smelting crucible 22, a cover plate 23 and a protective gas tank 24 which are hermetically connected to the top of the smelting crucible 22, wherein the protective gas tank 24 is communicated with the smelting crucible 22 through a pipeline, and the smelting crucible 22 is communicated with the heat-insulating crucible 1 through a communicating pipe 25. And a vibration motor 26 is arranged on the screening bin 9. A filter plate 27 is horizontally arranged in the heat-preservation crucible 1. And a heat-insulating layer 28 is arranged on the periphery of the heat-insulating crucible 1. A grid 29 is arranged in the discharge channel 7.
In the embodiment, an Al-Zn-Mg-Cu high-strength aluminum alloy is selected, and the alloy comprises the following elements in percentage by mass: 11-13% of Zn, 2.2-2.4% of Mg, 1.0-1.2% of Cu, 0.142% of Mn, 0.052% of Fe, 0.045% of Si, 0.205% of Zr, 0.094% of Ni, less than or equal to 0.002% of Cr, less than or equal to 0.002% of Ti and the balance of Al.
The smelting temperature of the alloy is between 850-; the spray forming process parameters are as follows: the atomization air pressure is 0.5-1.2MPa, the flow rate of the metal liquid in the heat-insulating crucible is 7-15kg/min, the spraying distance is between 300 and 500mm, the diameter of the draft tube is 3-10mm, and the rotating speed of the deposition disc is 30-70 rpm; the adhesive is paraffin wax flux.
After the spray-molded bodies were removed from the deposition plate, microstructure testing was performed by an Axio Imager M2M Zeiss optical microscope and grain size was measured using AxioVision software. As shown in FIG. 2, the grain morphology of the spray-molded article of the present invention has a good structural uniformity through a test of the grain size in a plurality of metallographic photographs, and although voids appear at part of the grain boundaries, no significant macro-voids appear, with an average grain size of 45 μm. FIG. 3 is a macroscopic morphology diagram of the overspray powder; fig. 4 and 5 are microstructure diagrams of metal powder in the first dust collection box and the second dust collection box, respectively.
The use process of the invention is as follows: the metal raw material is put into a smelting crucible for smelting, after the metal liquid is smelted, nitrogen or inert gas is introduced into the smelting crucible by a protective gas tank body, and the metal liquid in the smelting crucible enters a heat-insulating crucible through a communicating pipe under the action of gas pressure. After the spraying is started, a part of the metal liquid is sprayed and deposited on the deposition disc under the action of the atomizer to form a spraying formed body, the other part of the metal liquid becomes over-sprayed powder and falls into the bottom of the deposition chamber, and flaky and blocky solids mixed in the powder enter the screening bin after being filtered by the grids. Powder on the screen mesh is sieved in grades under the vibration of the vibrating motor, powder with the particle size smaller than the aperture of the screen mesh enters the first powder collecting box, and powder with the particle size larger than the aperture of the screen mesh enters the second powder collecting box. When powder in the powder collection box is injected and collected, a proper binder is selected according to the type of metal powder, and protective gas is introduced into the binder containing box, so that the powder can be prevented from being polluted by air along with the binder; then quantitative mixing is realized by controlling the flow control valves on the connecting pipes of the powder collecting box and the binder containing box, and finally sealed collection is realized in the forming bin.
Of course, the foregoing is only a preferred embodiment of the invention and should not be taken as limiting the scope of the embodiments of the invention. The present invention is not limited to the above examples, and equivalent changes and modifications made by those skilled in the art within the spirit and scope of the present invention should be construed as being included in the scope of the present invention.
Claims (10)
1. A spray forming and overspray powder collecting method is characterized by comprising the following steps:
(a) melt injection
Atomizing and spraying the smelted molten metal into a deposition chamber in a vacuum state, spraying a part of molten metal to a deposition plate to form a spray forming body, and forming overspray powder by the other part of molten metal;
(b) filtering and screening
Screening and grading the over-sprayed powder under a vacuum closed condition;
(c) collection by injection
And mixing the binder with the classified overspray powder under the condition of protective gas.
2. The spray-formed, overspray powder collection method of claim 1, wherein: in the step (b), the classified overspray powder can be directly packaged in a vacuum sealing way.
3. An apparatus for implementing the method of claim 1, comprising:
the bottom of the heat-preservation crucible (1) is provided with a flow guide pipe (2), and the top of the heat-preservation crucible is provided with a sealing cover (3);
the feeding mechanism is communicated with the heat-insulating crucible (1) and is used for feeding materials to the heat-insulating crucible (1);
an atomizer (4) connected to the end of the draft tube (2);
a deposition chamber (5) arranged at the outlet end of the atomizer (4), a deposition disc (6) is arranged in the deposition chamber, a discharge channel (7) is arranged at the bottom of the deposition chamber, and a vacuumizing tube (8) is connected on the discharge channel;
a screening bin (9) hermetically connected with the discharge channel (7);
a screen (10) obliquely fixed on the inner wall of the screening bin (9);
a first discharge pipe (11) arranged below the screen (10);
a second discharge pipe (12) arranged at the lower end of the sieve (10);
and a powder mixing mechanism which is hermetically connected with the first discharging pipe (11) and the second discharging pipe (12) respectively.
4. The apparatus of claim 3, wherein: the powder mixing mechanism comprises a powder mixing mechanism,
a first powder collecting box (13) hermetically connected with the first discharging pipe (11);
a second powder collecting box (14) hermetically connected with the second discharge pipe (12);
a first binder containing box (15) arranged on one side of the first powder collecting box (13);
a second binder containing box (16) arranged on one side of the second powder collecting box (14);
a first forming bin (17) hermetically connected with the first powder collecting tank (13) and the first binder containing tank (15);
and a second forming bin (18) hermetically connected with the second powder collecting tank (14) and the second binder containing tank (16);
and the first binder containing box (15) and the second binder containing box (16) are both provided with a protective gas access pipe (19).
5. The apparatus of claim 4, wherein: first album of powder case (13) and first binder hold case (15) and all through connecting pipe (20) and first shaping storehouse (17) sealing connection, second album of powder case (14) and second binder hold case (16) and all through connecting pipe (20) and second shaping storehouse (18) sealing connection, be equipped with flow control valve (21) on connecting pipe (20).
6. The apparatus of claim 3 or 5, wherein: the feeding mechanism comprises a smelting crucible (22), a cover plate (23) and a protective gas tank body (24) which are hermetically connected to the top of the smelting crucible (22), wherein the protective gas tank body (24) is communicated with the smelting crucible (22) through a pipeline, and the smelting crucible (22) is communicated with the heat-insulating crucible (1) through a communicating pipe (25).
7. The apparatus of claim 6, wherein: and a vibration motor (26) is arranged on the screening bin (9).
8. The apparatus of claim 6, wherein: a filter plate (27) is horizontally arranged in the heat-preservation crucible (1).
9. The apparatus of claim 6, wherein: and a heat-insulating layer (28) is arranged on the periphery of the heat-insulating crucible (1).
10. The apparatus of claim 6, wherein: a grid (29) is arranged in the discharging channel (7).
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113797691A (en) * | 2021-10-11 | 2021-12-17 | 南京航空航天大学 | Safe dust removing and collecting device for over-sprayed powder of spray-formed aluminum alloy |
| CN117900498A (en) * | 2024-01-22 | 2024-04-19 | 江苏金合特种合金材料有限公司 | Oil pipe hanger blank atomization injection molding manufacturing method |
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| CN113797691A (en) * | 2021-10-11 | 2021-12-17 | 南京航空航天大学 | Safe dust removing and collecting device for over-sprayed powder of spray-formed aluminum alloy |
| CN117900498A (en) * | 2024-01-22 | 2024-04-19 | 江苏金合特种合金材料有限公司 | Oil pipe hanger blank atomization injection molding manufacturing method |
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Denomination of invention: Spray forming, overspray powder collection method and device Effective date of registration: 20230330 Granted publication date: 20221028 Pledgee: China postal savings bank, Yiyuan County branch, Limited by Share Ltd. Pledgor: ZIBO DEYUAN METAL MATERIALS CO.,LTD. Registration number: Y2023980036643 |