CN113484358B - Two-way inlet gas thermal analyzer for transition metal powder reaction - Google Patents
Two-way inlet gas thermal analyzer for transition metal powder reaction Download PDFInfo
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- CN113484358B CN113484358B CN202110587476.XA CN202110587476A CN113484358B CN 113484358 B CN113484358 B CN 113484358B CN 202110587476 A CN202110587476 A CN 202110587476A CN 113484358 B CN113484358 B CN 113484358B
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 67
- 239000000843 powder Substances 0.000 title claims abstract description 45
- 229910052723 transition metal Inorganic materials 0.000 title claims abstract description 21
- 150000003624 transition metals Chemical class 0.000 title claims abstract description 21
- 238000010438 heat treatment Methods 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 19
- 239000007789 gas Substances 0.000 claims description 45
- 239000003570 air Substances 0.000 claims description 44
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 22
- 229910052786 argon Inorganic materials 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 238000003795 desorption Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 17
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 13
- 238000002076 thermal analysis method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to the technical field of metal powder reaction detection, and particularly discloses a two-way inlet gas thermal analyzer for transition metal powder reaction, which comprises a main body, wherein a reaction cavity and a heating module are arranged in the main body, and the heating module is positioned on the outer wall of a cavity of the reaction cavity; the inner wall of the reaction cavity is provided with an air pressure sensor and an air outlet; the inner bottom of the main body is provided with a first air passage, the first air passage is provided with a first valve, the outer wall of the main body is provided with a second air passage, and the second air passage is provided with a second valve; the first air passage and the second air passage are communicated with the air outlet; the top of the main body is connected with a cover body, an air outlet pipe communicated with the reaction cavity is arranged on the cover body, and a valve III is arranged on the air outlet pipe; the two-way inlet gas thermal analyzer for the transition metal powder reaction has the advantages of simple structure and convenience in operation, and meanwhile, the stability and the accuracy of the test can be effectively improved.
Description
Technical Field
The invention relates to the technical field of metal powder reaction detection, in particular to a two-way inlet gas thermal analyzer for transition metal powder reaction.
Background
Metal powder refers to a group of metal particles of less than 1mm in size, including single metal powders, alloy powders, and certain refractory compound powders having metallic properties, as the primary raw material for powder metallurgy.
The thermal analyzer is used for detecting the change of the thermal property of the detected object in the heating process, and when the conventional thermal analyzer is used, the operation is complex, the use is inconvenient, the quality change of the metal powder cannot be well tested, data deviation can be generated, and the test result is inaccurate.
Disclosure of Invention
Aiming at the problems of complex operation, inconvenient use and inaccurate test result, the invention provides a two-way air inlet thermal analyzer for transition metal powder reaction, which has the advantages of simple structure and convenient operation and can effectively improve the stability and the accuracy of the test.
In order to solve the technical problems, the invention provides the following specific scheme:
the two-way inlet gas thermal analyzer for the reaction of the transition metal powder comprises a main body, wherein a reaction cavity and a heating module are arranged in the main body, and the heating module is positioned on the outer wall of a cavity of the reaction cavity;
the inner wall of the reaction cavity is provided with an air pressure sensor and an air outlet;
the inner bottom of the main body is provided with a first air passage, the first air passage is provided with a first valve, the outer wall of the main body is provided with a second air passage, and the second air passage is provided with a second valve;
the first air passage and the second air passage are communicated with the air outlet;
the top of main part is connected with the lid, be provided with the outlet duct with reaction chamber intercommunication on the lid, be provided with valve III on the outlet duct.
Optionally, the upper end of lid is provided with the guard ring, and the guard ring can effectively prevent that the high temperature of outlet duct from scalding operating personnel or burning out clothing etc. improves the security of using.
Optionally, be provided with the through-hole on the guard ring, the through-hole is favorable to cooling after thermal analysis appearance work is accomplished, accelerates the radiating effect.
Optionally, the bottom of lid is provided with the sealed pad that is used for with main part sealing connection, improves the leakproofness of being connected between lid and the main part to improve the leakproofness of thermal analysis appearance during operation, improve the stability and the precision of test.
Optionally, the bottom of lid is provided with the go-between, the outer wall of go-between is provided with the screw thread, the interior top of main part is provided with the helicla flute with screw thread assorted, improves the leakproofness of being connected between lid and the main part to improve the leakproofness of thermal analysis appearance during operation, improve the stability and the precision of test.
Optionally, an external pipeline is connected to the second gas path, so that gas required during testing can be conveniently introduced.
Optionally, the gas discharged from the outer pipeline is air, argon, oxygen or hydrogen-argon mixture.
Optionally, the two-way intake thermal analyzer is applied to oxidation reduction and separation of metal powder and oxide, and detects the change of thermal properties of the detected object in the heating process.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a two-way inlet gas thermal analyzer for transition metal powder reaction, which is characterized in that when in use, after a cover body is taken down, metal powder and oxide are placed into a reaction cavity, and are heated by a heating module and are introduced with gas through a gas circuit to react, so that the two-way inlet gas thermal analyzer has the advantages of simple structure and convenience in operation, and meanwhile, the stability and the accuracy of the test can be effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a two-way intake thermal analyzer for transition metal powder reaction according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the inside of the main body according to an embodiment of the present invention.
Fig. 3 to fig. 7 are schematic diagrams of mass change curves of metal powder according to embodiments of the present invention.
Wherein 1 is a main body; 2 is a reaction chamber; 3 is a heating module; 4 is an air pressure sensor; 5 is an air outlet; 6 is a first air path; 7 is a valve I; 8 is a second gas path; 9 is a valve II; 10 is a cover body; 11 is an air outlet pipe; 12 is a protective ring; 13 is a through hole; 14 is a sealing gasket; 15 is a connecting ring; and 16 is an outer pipe.
Detailed Description
In order to describe the technical solution of the present invention in detail, the following description will be made clearly and completely by referring to the drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
For example, a two-way inlet gas thermal analyzer for transition metal powder reaction comprises a main body, wherein a reaction cavity and a heating module are arranged in the main body, and the heating module is positioned on the outer wall of a cavity of the reaction cavity; the inner wall of the reaction cavity is provided with an air pressure sensor and an air outlet; the inner bottom of the main body is provided with a first air passage, a first valve is arranged on the first air passage, a second air passage is arranged on the outer wall of the main body, and a second valve is arranged on the second air passage; the first air passage and the second air passage are communicated with the air outlet; the top of main part is connected with the lid, is provided with the outlet duct with reaction chamber intercommunication on the lid, is provided with the valve III on the outlet duct.
The embodiment provides a two way thermal analysis appearance that admits air for transition metal powder reaction, when using, takes off the lid back, put into reaction chamber with metal powder and oxide, heat up through heating module and pass through the gas circuit and let in gas and produce the reaction, have simple structure and convenient operation's advantage, can also effectively improve the stability and the precision of test simultaneously.
As shown in fig. 1 and fig. 2, a two-way intake thermal analyzer for reaction of transition metal powder includes a main body 1, in which a reaction chamber 2 and a heating module 3 are disposed, wherein the reaction chamber 2 is used for placing metal powder and oxide, providing a place for reaction of the metal powder and oxide, the reaction chamber 2 may be cylindrical or rectangular, etc., and may provide a reaction place for the metal powder and oxide, and the structure of the reaction chamber 2 is not limited in particular. The heating module 3 is arranged on the outer wall of the cavity of the reaction cavity 2, the heating module 3 is used for heating and raising the temperature, the required temperature is provided for the reaction of the metal powder and the oxide in the reaction cavity 2, and the stability and the accuracy of the test are effectively improved.
The outer wall of the reaction cavity 2 is provided with a gas pressure sensor 4 and a gas outlet 5, the gas pressure sensor 4 is used for detecting the pressure in the reaction cavity 2, the pressure in the reaction cavity 2 is monitored in real time, and the gas outlet 5 is used for discharging gas into the reaction cavity 2.
The inner bottom of the main body 1 is provided with a first air passage 6, the first air passage 6 is provided with a first valve 7, and the first valve 7 is used for keeping air airtight; the outer wall of the main body 1 is provided with a second air passage 8, the second air passage 8 is provided with a second valve 9, and the second valve 9 is also used for keeping air airtight, wherein the first air passage 6, the second air passage 8 and the air outlet 5 are communicated.
The top of the main body 1 is connected with a cover body 10, the cover body 10 is used for being in sealing connection with the main body 1, an air outlet pipe 11 communicated with the reaction cavity 2 is arranged on the cover body 10, the air outlet pipe 11 is used for discharging gas in the reaction cavity 2 after reaction, and a valve III is arranged on the air outlet pipe 11 and used for sealing the gas.
When the gas-liquid separation device is used, the cover body 10 is taken down from the top of the main body, metal powder and oxide are placed into the cavity of the reaction cavity 2, the cover body 10 is connected with the top of the main body 1 in a sealing mode, meanwhile, the heating module 3 starts to heat, the valve I7 is closed, the valve II 9 is opened, gas enters the gas channel I6 through the gas channel II 8 and is discharged into the reaction cavity 2 through the gas outlet 5, reaction is generated with the metal powder and the oxide in the reaction cavity 2, meanwhile, the pressure sensor 4 can detect the pressure in the reaction cavity 2, when the pressure reaches a preset value, the valve III is opened, and the gas is discharged from the gas outlet pipe 11.
By observing the mass change of the metal powder and the oxide in the oxygen, the influence of the amount of the sample on the thermal weight loss curve is recorded and analyzed, and the thermal analyzer is provided with a sensor for measuring the weight change, so that the mass change of the metal powder and the oxide in the oxygen can be directly observed.
In the example, through setting up gas circuit I6, gas circuit II 8, valve I7 and valve II 9, can seal one section gas to satisfy the test demand.
In some embodiments, the upper end of the cover body 10 is provided with a protection ring 12, and the protection ring 12 can effectively prevent the high temperature of the air outlet pipe 11 from scalding operators or burning clothes, etc., so as to improve the use safety.
Specifically, the protective ring 12 is covered at the upper end of the cover body 10, and encloses the edge of the cover body 10, so that scalding or burning of clothes and the like caused by high temperature to an operator when the gas in the reaction chamber 2 is discharged through the gas outlet pipe 11 at the upper end of the cover body 10 is avoided.
Further, in order to improve the rapid cooling of the thermal analyzer after the completion of the work, a plurality of through holes 13 can be uniformly formed in the protective ring 12, and the effects of rapid cooling and accelerated heat dissipation are achieved through the through holes 13, so that the thermal analyzer can be put into the next reaction test as soon as possible.
In some embodiments, the bottom of the cover 10 is provided with a sealing gasket 14 for sealing connection with the main body 1, so as to improve the tightness of connection between the cover 10 and the main body 1, and improve the tightness of the thermal analyzer during operation, and improve the stability and accuracy of testing.
The both sides of sealing pad 14 are laminated with the bottom of lid 10, the top of main part 1 respectively to ensure the connection leakproofness between lid 10 and the main part 1, improve the precision of test.
Further, a connecting ring 15 is arranged at the bottom of the cover body 10, threads are arranged on the outer wall of the connecting ring 15, and a screw groove matched with the threads is arranged on the inner top of the main body 1.
The connecting ring 15 is in threaded connection with the main body 1 through the matching of threads and screw grooves, so that the tightness of connection between the cover body 10 and the main body 1 can be improved, the tightness of the thermal analyzer during operation can be improved, and the stability and the accuracy of the test can be improved.
In some embodiments, the second gas path 8 is connected with an external pipeline 16, so that the gas required during the test can be conveniently introduced, and in particular, the gas discharged from the external pipeline 16 is air, argon, oxygen or hydrogen-argon mixed gas, and can be selectively discharged into different gases according to different reaction requirements.
In some embodiments, the two-way intake thermal analyzer is applied to the oxidation-reduction and separation of metal powder and oxide, and detects the change of thermal properties of the detected object in the heating process.
As shown in fig. 3 to 7, fig. 3 is a mass change curve of different mass of initial iron powder in 200ml of oxygen per minute.
Fig. 4 is a mass change curve of iron powder of different masses from 100 to 1000 c in 200ml of air, argon, oxygen and hydrogen argon mixture gas per minute.
Fig. 5 is a mass change curve of different masses of ferric oxide powder from 100 to 1000 c in 200ml of air, argon, oxygen and hydrogen-argon mixture gas per minute, respectively.
Fig. 6 is a mass change curve of different masses of ferroferric oxide powder from 100 to 1000 c in 200ml of air, argon, oxygen and hydrogen-argon mixture gas per minute, respectively.
Fig. 7 is a mass change curve of different masses of ferric oxide powder from 100 to 1000 c in 200ml of air, argon, oxygen and hydrogen-argon mixture gas per minute, respectively.
The two-way inlet gas thermal analyzer for the transition metal powder reaction has the advantages of simple structure and convenience in operation, and meanwhile, the stability and the accuracy of the test can be effectively improved.
It will be appreciated that the various embodiments described above between the various components may be combined and implemented, and that the examples are merely illustrative of specific configurations of the possible embodiments and are not intended to be limiting.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Claims (8)
1. The two-way inlet gas thermal analyzer for the reaction of the transition metal powder is characterized by comprising a main body (1), wherein a reaction cavity (2) and a heating module (3) are arranged in the main body (1), and the heating module (3) is positioned on the outer wall of a cavity of the reaction cavity (2);
the inner wall of the reaction cavity (2) is provided with an air pressure sensor (4) and an air outlet (5);
the inner bottom of the main body (1) is provided with a first air passage (6), the first air passage (6) is provided with a first valve (7), the outer wall of the main body (1) is provided with a second air passage (8), and the second air passage (8) is provided with a second valve (9);
the first air passage (6), the second air passage (8) and the air outlet (5) are communicated;
the top of main part (1) is connected with lid (10), be provided with outlet duct (11) with reaction chamber (2) intercommunication on lid (10), be provided with valve III on outlet duct (11).
2. The two-way intake thermal analyzer for the reaction of transition metal powder according to claim 1, wherein a guard ring (12) is provided at the upper end of the cover body (10).
3. The two-way intake thermal analyzer for the reaction of transition metal powder according to claim 2, wherein the guard ring (12) is provided with a through hole (13).
4. The two-way intake thermal analyzer for the reaction of transition metal powder according to claim 1, characterized in that the bottom of the cover body (10) is provided with a gasket (14) for sealing connection with the main body (1).
5. The two-way intake thermal analyzer for the reaction of transition metal powder according to claim 1, wherein a connecting ring (15) is arranged at the bottom of the cover body (10), threads are arranged on the outer wall of the connecting ring (15), and screw grooves matched with the threads are arranged on the inner top of the main body (1).
6. The two-way intake thermal analyzer for the reaction of transition metal powder according to claim 1, wherein the second gas path (8) is connected with an external pipe (16).
7. The two-way intake thermal analyzer for the reaction of transition metal powder according to claim 6, wherein the gas discharged from the outer pipe (16) is air, argon, oxygen or hydrogen-argon mixture.
8. The two-way intake thermal analyzer for transition metal powder reaction according to claim 1, wherein the two-way intake thermal analyzer is applied to redox and desorption of metal powder and oxide.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110587476.XA CN113484358B (en) | 2021-05-27 | 2021-05-27 | Two-way inlet gas thermal analyzer for transition metal powder reaction |
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| CN202110587476.XA CN113484358B (en) | 2021-05-27 | 2021-05-27 | Two-way inlet gas thermal analyzer for transition metal powder reaction |
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| CN113484358A CN113484358A (en) | 2021-10-08 |
| CN113484358B true CN113484358B (en) | 2024-01-05 |
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