CN115055676A - Powder material in-situ heat treatment device - Google Patents
Powder material in-situ heat treatment device Download PDFInfo
- Publication number
- CN115055676A CN115055676A CN202210572445.1A CN202210572445A CN115055676A CN 115055676 A CN115055676 A CN 115055676A CN 202210572445 A CN202210572445 A CN 202210572445A CN 115055676 A CN115055676 A CN 115055676A
- Authority
- CN
- China
- Prior art keywords
- crucible
- heat treatment
- outlet
- inlet
- powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
Abstract
The invention discloses an in-situ heat treatment device for powder materials, which comprises a crucible and a controller, wherein the top of the crucible is provided with an inlet, and the bottom of the crucible is provided with an outlet; two separators are sequentially arranged in the crucible at intervals from top to bottom so as to separate the interior of the crucible into an upper chamber, a middle chamber and a lower chamber which are communicated with each other; the upper chamber is communicated with the inlet, the inlet is connected with a powder outlet of the atomization powder-making structure, and the lower chamber is communicated with the outlet; an air inlet communicated with an air source is arranged at the inlet, and an air outlet is arranged at the outlet; the outer surface of the crucible is provided with a heating pipe, a temperature measuring instrument is arranged in the crucible, and the controller is simultaneously in electric signal connection with the heating pipe and the temperature measuring instrument. The powder material in-situ heat treatment device provided by the invention does not need to go through the cooling process of the last process link and the heating process of the heat treatment link, has high production efficiency, and can realize special heat treatment processes such as rapid heating or rapid condensation.
Description
Technical Field
The invention relates to the technical field of powder preparation, in particular to an in-situ heat treatment device for a powder material.
Background
The powder material can be applied to the technical fields of 3D printing, powder metallurgy, thermal spraying, material injection molding, electronic packaging and the like, so that the requirements on the powder material in the directions of high purity, high sphericity, controllable components and granularity, high efficiency, low cost and the like are higher.
The heat treatment is to place the material in a certain temperature field for a period of time, and to change the microstructure inside and on the surface of the material, thereby realizing the adjustment of the macroscopic service performance of the material. In the preparation technology of powder materials, heat treatment is an important process link, and generally affects the phase composition, the micro texture, the surface state and the like of the materials, thereby affecting the use characteristics of the powder such as shape, composition, fluidity and the like.
In the heat treatment process of the powder material in the prior art, the powder primary product obtained in the last process link is generally transferred to a heat treatment furnace for heat treatment, in the transfer process, the powder primary product must be subjected to the temperature reduction process of the last process link and the temperature rise process of the heat treatment link, the temperature rise and reduction process generally consumes longer time, the production efficiency is greatly low, and special heat treatment processes such as rapid temperature rise or rapid condensation cannot be realized. In addition, the material is inevitably exposed to the atmosphere or other external environments during the process of being taken out from the previous process device and then being put into the heat treatment device, which may cause oxidation, damage, deformation or pollution of the material, thereby affecting the quality of the product.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the powder material in-situ heat treatment device which does not need to cool and heat the initial powder product and avoids the oxidation damage of the initial powder product.
In order to achieve the above object, the present invention provides an in-situ heat treatment apparatus for powder materials, comprising a crucible and a controller, wherein the top of the crucible is provided with an inlet, and the bottom of the crucible is provided with an outlet;
two separators are sequentially arranged in the crucible at intervals from top to bottom so as to separate the interior of the crucible into an upper chamber, a middle chamber and a lower chamber which are communicated with each other;
the upper chamber is communicated with the inlet, the inlet is connected with a powder outlet of the atomization powder making structure, and the lower chamber is communicated with the outlet;
the inlet is provided with an air inlet communicated with an air source, and the outlet is provided with an air outlet;
the outer surface of the crucible is provided with a heating pipe, a temperature measuring instrument is arranged in the crucible, and the controller is simultaneously in electric signal connection with the heating pipe and the temperature measuring instrument.
Preferably, the outer surface of the heating pipe is wrapped with an insulating layer.
Preferably, a gas filter is arranged at the gas outlet.
Preferably, the gas filter is a ceramic filter element or a stainless steel sintered filter element or a titanium sintered filter element.
As a preferred scheme, the heating pipes include a first heating pipe arranged on the outer surface of the upper chamber, a second heating pipe arranged on the outer surface of the middle chamber, and a third heating pipe arranged on the outer surface of the lower chamber, the first heating pipe, the second heating pipe, and the third heating pipe are respectively connected with a controller, the number of the thermometers is also three, the three thermometers are respectively and correspondingly embedded into the upper chamber, the middle chamber, and the lower chamber, and the three thermometers are respectively connected with the controller.
Preferably, the gas introduced by the gas inlet is argon or a mixed gas of nitrogen and argon.
Preferably, the temperature measuring instrument is a thermocouple, a temperature measuring cone or an infrared temperature measuring instrument.
As the preferred scheme, the air inlet is provided with an air inlet valve, the air outlet is provided with an air outlet valve, and the air inlet valve and the air outlet valve are both in electric signal connection with the controller.
Preferably, each partition comprises a funnel-shaped partition ring, the top edge of each partition ring is connected to the inner wall of the crucible, a funnel hole is formed in the center of each partition ring, and the edge of each funnel hole is provided with a flange extending downwards.
Compared with the prior art, the powder material in-situ heat treatment device and method provided by the invention have the beneficial effects that:
the powder material in-situ heat treatment device comprises a crucible and a controller, wherein the top of the crucible is provided with an inlet, and the bottom of the crucible is provided with an outlet; two separators are sequentially arranged in the crucible at intervals from top to bottom so as to separate the interior of the crucible into an upper chamber, a middle chamber and a lower chamber which are communicated with each other; the upper chamber is communicated with the inlet, the inlet is connected with the powder outlet of the atomization powder-making structure, the powder atomized by the atomization powder-making structure can directly enter the upper chamber from the powder outlet, the lower chamber is communicated with the outlet, and the outlet is connected with the powder collecting device; the inlet is provided with an air inlet communicated with an air source, and the outlet is provided with an air outlet; the outer surface of the crucible is provided with a heating pipe, the crucible is internally provided with a temperature measuring instrument, and the controller is simultaneously in electric signal connection with the heating pipe and the temperature measuring instrument.
According to the powder material in-situ heat treatment device, the powder primary product discharged from the powder outlet for atomization powder preparation directly enters the crucible, meanwhile, the powder primary product is directly heated by the heating pipe for heat treatment, protective gas can be introduced into the gas inlet and the gas outlet to discharge air before the powder primary product enters the crucible, so that the oxidation, damage, deformation or pollution of the powder material are avoided, the powder enters the outlet for collection and collection after the heat treatment, the temperature reduction process of the last process link and the temperature rise process of the heat treatment link are not needed, the production efficiency is high, and the special heat treatment processes such as rapid temperature rise or rapid condensation can be realized; the powder material does not need to be transferred, so that the powder material is prevented from contacting air, and the oxidation, damage, deformation or pollution of the material is avoided.
Drawings
Fig. 1 is a schematic structural diagram of an in-situ heat treatment apparatus for powder materials according to an embodiment of the present invention.
In the figure, 1, an upper chamber; 2. a middle chamber; 3. a lower chamber; 4. a heat-insulating layer; 5. heating a tube; 6. a temperature measuring instrument; 7. a controller; 8. an air inlet; 9. an air outlet; 10. a gas filter; 11. powder particles. 12. A crucible; 13. a separator.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. It should be understood that the terms "first", "second", etc. are used herein to describe various information, but the information should not be limited to these terms, which are used only to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
In a preferred embodiment of the apparatus for in-situ heat treatment of powder material of the present invention, as shown in fig. 1, the apparatus for in-situ heat treatment of powder material of the present invention comprises a crucible 12 and a controller 7, wherein the top of the crucible 12 is provided with an inlet, and the bottom of the crucible 12 is provided with an outlet; two separators 13 are arranged in the crucible 12 at intervals from top to bottom in sequence so as to separate the crucible 12 into an upper chamber 1, a middle chamber 2 and a lower chamber 3 which are communicated with each other; the upper chamber 1 is communicated with the inlet, the inlet is connected with a powder outlet of the atomization powder making structure, the lower chamber is communicated with the outlet, and the outlet is connected with a powder collecting device; an air inlet 8 communicated with an air source is arranged at the inlet, and an air outlet 9 is arranged at the outlet; the outer surface of the crucible 12 is provided with a heating pipe 5, the crucible 12 is internally provided with a temperature measuring instrument 6, and the controller 7 is simultaneously in electric signal connection with the heating pipe 5 and the temperature measuring instrument 6.
In the application, the crucible 12 is cylindrical, and the temperature measuring instrument 6 is embedded in the crucible 12; the material of the crucible 12 may be any of graphite, quartz, alumina, or zirconia.
Specifically, the crucible 12 has a wall thickness of 2mm to 10mm, and may be set according to the actual use requirement, for example, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned value range are also applicable.
In particular, the bottom of the crucible 12 is funnel-shaped with a cone angle of 90 ° to 120 °, for example 90 °, 93 °, 96 °, 99 °, 102 °, 105 °, 108 °, 111 °, 114 °, 117 °, or 120 °, but not limited to the values listed, and other values not listed in this range are equally applicable.
Specifically, the diameter of the bottom surface of the crucible 12 is 20mm to 50mm, and may be, for example, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm, 34mm, 36mm, 38mm, 40mm, 42mm, 44mm, 46mm, 48mm or 50mm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
According to the powder material in-situ heat treatment device, a powder primary product discharged from a powder outlet for atomization powder preparation directly enters the crucible 12, meanwhile, the powder primary product is directly heated by the heating pipe 5 for heat treatment, and before the powder primary product enters the crucible 12, protective gas can be introduced into the gas inlet 8 and the gas outlet 9 to discharge air, so that the powder material 11 is prevented from being oxidized, damaged, deformed or polluted; the powder material 11 does not need to be transferred, avoiding contact with air, avoiding oxidation, damage, deformation or contamination of the material.
Wherein, each separator 13 includes a funnel-shaped separating ring, the top edge of each separating ring is connected to the inner wall of the crucible 12, the center of each separating ring is provided with a funnel hole, the funnel holes of the two separators are oppositely arranged up and down, and the edge of each funnel hole is provided with a flange extending downwards for guiding the movement of the powder material.
Wherein, the surface parcel of heating pipe 5 has heat preservation 4, and heat preservation 4 parcel is at 12 outer walls of crucible, is the ring form, and the temperature when avoiding crucible 12 to heat runs off.
Wherein, gas filter 10 is arranged at gas outlet 9, and the filter element of gas filter 10 adopts any one of ceramic filter element, stainless steel sintered filter element or titanium sintered filter element.
Further, the filter element has a filtration accuracy of 5 to 15 μm, and may be, for example, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm or 15 μm, but is not limited to the above-mentioned values, and other values not shown in the above-mentioned range are also applicable.
The heating pipes 5 comprise first heating pipes arranged on the outer surface of the upper chamber 1, second heating pipes arranged on the outer surface of the middle chamber 2 and third heating pipes arranged on the outer surface of the lower chamber 3, the first heating pipes, the second heating pipes and the third heating pipes are respectively connected with the controller 7, the temperature measuring instruments 6 are also three, the three temperature measuring instruments are respectively and correspondingly embedded into the upper chamber 1, the middle chamber 2 and the lower chamber 3, and the three temperature measuring instruments are respectively connected with the controller 7. The three thermometers 6 detect the temperatures of the upper chamber 1, the middle chamber 2 and the lower chamber 3 and transmit the temperatures to the controller 7, and the controller 7 is used for controlling the opening and closing of the first heating pipe, the second heating pipe and the third heating pipe so as to achieve the proper temperature required by the heat treatment.
Further, the temperature measuring instrument 6 can be any one of a thermocouple, a temperature measuring cone or an infrared temperature measuring instrument; the heating element of the heating pipe 5 is one of tungsten wire, molybdenum wire, silicon carbon rod and silicon molybdenum rod.
Wherein, air inlet 8 is provided with the air inlet valve, and gas outlet 9 is provided with the gas outlet valve, and air inlet valve and gas outlet valve all are connected with controller 7 electricity signal for open and close through controller 7 control air inlet valve and gas outlet valve. Further, the gas introduced through the gas inlet 8 is argon or a mixed gas of nitrogen and argon.
When the powder material in-situ heat treatment device is used specifically, program temperatures of an upper chamber 4, a middle chamber 5 and a lower chamber 6 are set, a heating pipe 5 is started, protective gas is slowly filled from an air inlet 8 until air in a crucible 45 is completely exhausted from an air outlet 9, an air outlet valve is closed, then an air inlet valve is closed, after the temperatures of the chambers of a crucible 12 reach the set temperatures, an upper atomization powder preparation device is started, powder particles naturally fall under the action of gravity, and fall into a collection device after being subjected to three-section heat treatment of the upper chamber 4, the middle chamber 5 and the lower chamber 6 of the crucible respectively, so that a powder product subjected to in-situ heat treatment is obtained. In the process of processing the powder material by adopting the invention, the gas flow can be adjusted by opening and closing the gas inlet valve and the gas outlet valve, and the gas pressure can be increased, so that the descending speed of the powder material 11 can be adjusted, and the time of the heat treatment of the powder material 11 can be controlled. According to the invention, the heat treatment temperature of the upper chamber, the middle chamber and the lower chamber is controllable and adjustable, and special heat treatment processes such as rapid heating or rapid condensation can be realized, so that the regulation and control of the components and the organization structure of the powder material 11 can be realized. By adopting the invention to carry out in-situ heat treatment on the powder material 11, the temperature reduction process of the previous process link and the temperature rise process of the heat treatment link are not needed, the production period can be shortened, the production efficiency is greatly improved, and the damage, deformation or pollution of the material in the transfer process can be effectively avoided. Meanwhile, the whole process of the material heat treatment is in a protective atmosphere, so that the oxidation can be effectively prevented, and the method is particularly suitable for processing metal powder materials.
Finally, it should be noted that: 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 modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. The in-situ heat treatment device for the powder material is characterized by comprising a crucible and a controller, wherein the top of the crucible is provided with an inlet, and the bottom of the crucible is provided with an outlet;
two separators are sequentially arranged in the crucible at intervals from top to bottom so as to separate the interior of the crucible into an upper chamber, a middle chamber and a lower chamber which are communicated with each other;
the upper chamber is communicated with the inlet, the inlet is connected with a powder outlet of the atomization powder making structure, and the lower chamber is communicated with the outlet;
an air inlet communicated with an air source is arranged at the inlet, and an air outlet is arranged at the outlet;
the crucible is characterized in that a heating pipe is arranged on the outer surface of the crucible, a temperature measuring instrument is arranged in the crucible, and the controller is simultaneously in electric signal connection with the heating pipe and the temperature measuring instrument.
2. The apparatus of claim 1, wherein the heating tube is wrapped with an insulating layer on an outer surface thereof.
3. The apparatus for in-situ heat treatment of powdered material as claimed in claim 1 wherein a gas filter is provided at said gas outlet.
4. The apparatus according to claim 3, wherein the gas filter is a ceramic filter element, a stainless steel sintered filter element or a titanium sintered filter element.
5. The apparatus for in-situ heat treatment of powder material according to claim 1, wherein the heating pipes comprise a first heating pipe disposed on the outer surface of the upper chamber, a second heating pipe disposed on the outer surface of the middle chamber, and a third heating pipe disposed on the outer surface of the lower chamber, the first heating pipe, the second heating pipe, and the third heating pipe are respectively connected to a controller, and the number of the thermometers is also three, three thermometers are respectively embedded in the upper chamber, the middle chamber, and the lower chamber, and three thermometers are respectively connected to a controller.
6. The apparatus for in-situ heat treatment of powder material according to claim 1, wherein the gas introduced from the gas inlet is one of argon and a mixture of nitrogen and argon.
7. The apparatus for in-situ heat treatment of powdered material as claimed in claim 1 wherein said temperature measuring device is a thermocouple or a temperature cone or an infrared temperature measuring device.
8. The apparatus for in-situ heat treatment of powdered material as claimed in claim 1 wherein said gas inlet is provided with a gas inlet valve and said gas outlet is provided with a gas outlet valve, both of which are in electrical communication with a controller.
9. The apparatus for in situ heat treatment of powdered material as defined in claim 1 wherein each of said dividers includes a divider ring in the form of a funnel, a top edge of each of said divider rings being attached to an inner wall of said crucible, a funnel aperture being centrally located in each of said divider rings, and an edge of each of said funnel apertures having a downwardly extending flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572445.1A CN115055676A (en) | 2022-05-25 | 2022-05-25 | Powder material in-situ heat treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210572445.1A CN115055676A (en) | 2022-05-25 | 2022-05-25 | Powder material in-situ heat treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115055676A true CN115055676A (en) | 2022-09-16 |
Family
ID=83198310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210572445.1A Pending CN115055676A (en) | 2022-05-25 | 2022-05-25 | Powder material in-situ heat treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115055676A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105965025A (en) * | 2016-07-13 | 2016-09-28 | 江苏省特种设备安全监督检验研究院 | Method and device for producing high-strength and high-conductivity graphene copper-based powder material |
| WO2017056510A1 (en) * | 2015-09-30 | 2017-04-06 | Ｊｆｅスチール株式会社 | Production method for alloy steel powder for powder metallurgy |
| CN109795987A (en) * | 2017-11-16 | 2019-05-24 | 上海镁源动力科技有限公司 | The method of the integrated apparatus and preparation hydrogenation magnesium dust of preparation hydrogenation magnesium dust |
| CN112745868A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Pyrolysis device, pyrolysis system and pyrolysis method for coal and biological carbonaceous raw materials |
| CN113134617A (en) * | 2021-04-19 | 2021-07-20 | 山东理工大学 | Plasma spheroidizing deoxidation 3D printing metal powder preparation device |
| US20210308764A1 (en) * | 2018-09-25 | 2021-10-07 | Zhiyong QIN | Apparatus and method for preparing spherical metal powder based on one-by-one atomization method for uniform droplets |
| CN114514196A (en) * | 2019-09-30 | 2022-05-17 | 元峻有限公司 | Method for producing graphite and vertical graphitization furnace |
-
2022
- 2022-05-25 CN CN202210572445.1A patent/CN115055676A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017056510A1 (en) * | 2015-09-30 | 2017-04-06 | Ｊｆｅスチール株式会社 | Production method for alloy steel powder for powder metallurgy |
| CN105965025A (en) * | 2016-07-13 | 2016-09-28 | 江苏省特种设备安全监督检验研究院 | Method and device for producing high-strength and high-conductivity graphene copper-based powder material |
| CN109795987A (en) * | 2017-11-16 | 2019-05-24 | 上海镁源动力科技有限公司 | The method of the integrated apparatus and preparation hydrogenation magnesium dust of preparation hydrogenation magnesium dust |
| US20210308764A1 (en) * | 2018-09-25 | 2021-10-07 | Zhiyong QIN | Apparatus and method for preparing spherical metal powder based on one-by-one atomization method for uniform droplets |
| CN114514196A (en) * | 2019-09-30 | 2022-05-17 | 元峻有限公司 | Method for producing graphite and vertical graphitization furnace |
| CN112745868A (en) * | 2019-10-29 | 2021-05-04 | 中国石油化工股份有限公司 | Pyrolysis device, pyrolysis system and pyrolysis method for coal and biological carbonaceous raw materials |
| CN113134617A (en) * | 2021-04-19 | 2021-07-20 | 山东理工大学 | Plasma spheroidizing deoxidation 3D printing metal powder preparation device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20020108949A1 (en) | Microwave processing using highly microwave absorbing powdered material layers | |
| EP0216649A2 (en) | Method and system for manufacturing fine-grained silicon monoxide | |
| NO119369B (en) | ||
| CN102468208A (en) | Chuck and semiconductor processing device | |
| CN106064815A (en) | The high-purity graphite powder that the method for graphite powder purification and the method are prepared | |
| CN107621169B (en) | A kind of small size vacuum induction melting furnace and its method of smelting | |
| US20140251212A1 (en) | Hopper and thermal spraying apparatus | |
| CN115055676A (en) | Powder material in-situ heat treatment device | |
| KR20200081468A (en) | Thermally insulated modules and related methods | |
| CN103122457A (en) | Chemical vapor deposition solid precursor continuous supply system | |
| KR20200056073A (en) | Manufacturing apparatus and manufacturing method of nanopowder using DC arc plasma and apparatus for manufacturing the same | |
| US4681995A (en) | Heat pipe ring stacked assembly | |
| WO2009153865A1 (en) | Micropowder producing apparatus and process | |
| CN216592755U (en) | Fast cooling sintering furnace | |
| CN205414418U (en) | A high temperature evaporimeter for making micro -nano level metal powder | |
| CN212532733U (en) | Quartz continuous melting furnace capable of reducing tube wall deviation | |
| JPS63195102A (en) | Continuous production of aluminum nitride powder and device therefor | |
| RU2562188C2 (en) | Device to produce casts by directed crystallisation | |
| US20220260314A1 (en) | Rapid Cooling Debinding and Sintering Furnace | |
| JPH0259405A (en) | Spray roaster | |
| JP2000169162A (en) | Production of quartz glass | |
| CN207210273U (en) | A kind of high temperature resistant high-purity ceramic cotton Preparation equipment | |
| KR102631590B1 (en) | Acetylene black manufacturing system for electrode catalyst support for hydrogen fuel cells | |
| JPH0487181A (en) | Silicon nitride member and its manufacture | |
| US10933559B2 (en) | Method of producing spark plug insulator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |