CN113484358A - Two-way air inlet thermal analyzer for transition metal powder reaction - Google Patents
Two-way air inlet thermal analyzer for transition metal powder reaction Download PDFInfo
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- CN113484358A CN113484358A CN202110587476.XA CN202110587476A CN113484358A CN 113484358 A CN113484358 A CN 113484358A CN 202110587476 A CN202110587476 A CN 202110587476A CN 113484358 A CN113484358 A CN 113484358A
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- transition metal
- thermal analyzer
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 65
- 239000000843 powder Substances 0.000 title claims abstract description 44
- 229910052723 transition metal Inorganic materials 0.000 title claims abstract description 21
- 150000003624 transition metals Chemical class 0.000 title claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 58
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 22
- 229910052786 argon Inorganic materials 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 14
- 239000003570 air Substances 0.000 claims description 11
- 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
- 239000000203 mixture Substances 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 238000003795 desorption Methods 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 18
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 13
- 230000001681 protective effect Effects 0.000 description 4
- 238000002076 thermal analysis method Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 238000000926 separation method Methods 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
- 238000007599 discharging Methods 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
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- YOBAEOGBNPPUQV-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe].[Fe] YOBAEOGBNPPUQV-UHFFFAOYSA-N 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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Classifications
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- 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-path air inlet 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 body of the reaction cavity; the inner wall of the cavity 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 gas circuit, the first gas circuit is provided with a first valve, the outer wall of the main body is provided with a second gas circuit, and the second gas circuit is provided with a second valve; the first gas path and the second gas path are communicated with the gas outlet; the top of the main body is connected with a cover body, the cover body is provided with an air outlet pipe communicated with the reaction cavity, and the air outlet pipe is provided with a third valve; the two-path air inlet thermal analyzer for the transition metal powder reaction has the advantages of simple structure and convenience in operation, and can effectively improve the stability and accuracy of the test.
Description
Technical Field
The invention relates to the technical field of metal powder reaction detection, in particular to a two-way air inlet thermal analyzer for transition metal powder reaction.
Background
Metal powder refers to a group of metal particles having a size of less than 1mm, including single metal powders, alloy powders, and powders of certain refractory compounds having metallic properties, which are the main raw materials for powder metallurgy.
Thermal analysis appearance is used for detecting the change of the thermal property of detected article in the intensification process, and current thermal analysis appearance is when using, and the operation is comparatively complicated, and it is convenient inadequately to use, can not be fine carry out the test of quality change to the metal powder, can produce the data deviation, 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 the two-way air inlet thermal analyzer for the transition metal powder reaction, which has the advantages of simple structure and convenient operation and can also effectively improve the stability and the precision of the test.
In order to solve the technical problems, the invention provides the following specific scheme:
a two-way air inlet 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 body of the reaction cavity;
the inner wall of the cavity 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 gas circuit, the first gas circuit is provided with a first valve, the outer wall of the main body is provided with a second gas circuit, and the second gas circuit is provided with a second valve;
the first gas path and the second gas path are communicated with the gas 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 three on the outlet duct.
Optionally, the upper end of lid is provided with the guard ring, and the guard ring can prevent effectively that the high temperature of outlet duct from scalding operating personnel or burning out clothing etc. improves the security of using.
Optionally, the protective ring is provided with a through hole, and the through hole is favorable for cooling after the thermal analyzer is completed, so that the heat dissipation effect is accelerated.
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 be provided with screw thread assorted spiral shell groove, improve 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 second gas path is connected with an external pipeline, so that gas required during testing can be conveniently introduced.
Optionally, the gas discharged from the outer pipeline is air, argon, oxygen or a hydrogen-argon mixture.
Optionally, the two-path inlet gas thermal analyzer is applied to oxidation reduction and separation of metal powder and oxides, and detects the change of thermal properties of the detected object in the temperature rise process.
Compared with the prior art, the invention has the beneficial effects that: the invention provides a two-path air inlet thermal analyzer for transition metal powder reaction, when in use, after a cover body is taken down, metal powder and oxide are put into a reaction cavity, the heating module is used for heating and gas is introduced through a gas path and a gas channel to generate reaction, the two-path air inlet thermal analyzer has the advantages of simple structure and convenience in operation, and meanwhile, the stability and the precision of the test can be effectively improved.
Drawings
Fig. 1 is a schematic structural diagram of a two-way inlet thermal analyzer for transition metal powder reaction according to an embodiment of the present invention.
Fig. 2 is a schematic structural view of the inside of the main body provided in the embodiment of the present invention.
Fig. 3 to 7 are schematic diagrams of mass change curves of the metal powder provided in the embodiment of the present invention.
Wherein, 1 is a main body; 2 is a reaction cavity; 3 is a heating module; 4 is an air pressure sensor; 5 is an air outlet; 6 is a gas path I; 7 is a valve I; 8 is a gas circuit II; 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 pipeline.
Detailed Description
In order to explain the technical solution of the present invention in detail, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiment of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the 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. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
For example, a two-way air inlet 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 the cavity of the reaction cavity; the inner wall of the cavity 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 gas circuit, the first gas circuit is provided with a first valve, the outer wall of the main body is provided with a second gas circuit, and the second gas circuit is provided with a second valve; the gas path I and the gas path II are communicated with the gas 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 valve three on the outlet duct.
The two-path air inlet thermal analyzer for transition metal powder reaction provided by the embodiment has the advantages of simple structure and convenience in operation, and can effectively improve the stability and the precision of the test simultaneously.
As shown in fig. 1 and 2, a two-way gas inlet thermal analyzer for transition metal powder reaction 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 to provide a place for the reaction of the metal powder and the oxide, the reaction chamber 2 may be cylindrical or rectangular, and the like, and can provide a reaction place for the metal powder and the oxide, and the structure of the reaction chamber 2 is not specifically limited herein. Heating module 3 locates the cavity outer wall of reaction chamber 2, and heating module 3 is used for the heating intensification effect, provides required temperature for the reaction of 2 interior metal powder of reaction chambers and oxide, effectively improves the stability and the precision of test.
The outer wall of the cavity of the reaction cavity 2 is provided with a pressure sensor 4 and a gas outlet 5, the pressure sensor 4 is used for detecting the pressure in the reaction cavity 2 and monitoring the pressure in the reaction cavity 2 in real time, and the gas outlet 5 is used for discharging gas into the reaction cavity 2.
A first air channel 6 is arranged at the inner bottom of the main body 1, a first valve 7 is arranged on the first air channel 6, and the first valve 7 is used for keeping the air closed; and a second air path 8 is arranged on the outer wall of the main body 1, a second valve 9 is arranged on the second air path 8, the second valve 9 is also used for keeping the air closed, and the first air path 6, the second air path 8 and the air outlet 5 are communicated.
The top of main part 1 is connected with lid 10, and lid 10 is used for with main part 1 sealing connection, is provided with the outlet duct 11 with reaction chamber 2 intercommunication on the lid 10, and outlet duct 11 is used for the gaseous emission in the reaction chamber 2 after will reacting, is provided with valve three on the outlet duct 11, and valve three is used for sealing up gas.
When using, take off lid 10 from the top of main part, put into 2 cavities of reaction chamber with metal powder and oxide, again with the top sealing connection of lid 10 with main part 1, heating module 3 begins the heating simultaneously, close valve 7, open valve two 9, gas passes through gas circuit two 8 and gets into in gas circuit one 6, and discharge into reaction chamber 2 through gas outlet 5 in, with the metal powder in the reaction chamber 2, the oxide produces the reaction, baroceptor 4 can detect the pressure in the reaction chamber 2 simultaneously, when pressure reaches the default, valve three is opened, gas is discharged from outlet duct 11.
The mass change of the metal powder and the oxide in the oxygen is observed, the influence of the amount of the sample on the thermal weight loss curve is recorded and analyzed, and it needs to be noted that the thermal analyzer is provided with a sensor for measuring the weight change, so the mass change of the metal powder and the oxide in the oxygen can be directly observed.
In this example, through setting up gas circuit one 6, gas circuit two 8, valve one 7 and valve two 9, can be airtight to a 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 out clothes, and the like, thereby improving the safety of use.
Specifically, the protective ring 12 covers the upper end of the cover 10 to surround the edge of the cover 10, so as to prevent the operator from being scalded or burning clothes due to high temperature when the gas in the reaction chamber 2 is discharged through the gas outlet pipe 11 at the upper end of the cover 10.
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 arranged on 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 sealing performance of the connection between the cover 10 and the main body 1, thereby improving the sealing performance of the thermal analyzer during operation and improving the stability and accuracy of the test.
The two sides of the sealing gasket 14 are respectively attached to the bottom of the cover 10 and the top of the main body 1, so as to ensure the connection sealing performance between the cover 10 and the main body 1 and improve the testing accuracy.
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 thread groove matched with the threads is arranged at the inner top of the main body 1.
The connecting ring 15 is screwed in the main body 1 through the matching of threads and screw grooves, so that the sealing performance of connection between the cover body 10 and the main body 1 can be improved, the sealing performance of the thermal analyzer during operation is improved, and the stability and the accuracy of testing are improved.
In some embodiments, the second gas path 8 is connected to an external pipeline 16, so as to facilitate introduction of gas required for testing, specifically, the gas discharged from the external pipeline 16 is air, argon, oxygen or a hydrogen-argon mixture, and different gases can be selected to be discharged according to different reaction requirements.
In some embodiments, the two-way inlet gas 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 temperature rising process.
As shown in fig. 3 to 7, fig. 3 is a graph showing the change in mass of initial iron powder of different masses in 200ml of oxygen per minute.
Fig. 4 is a graph showing the mass change of iron powder of different mass from 100 to 1000 c in a mixture of air, argon, oxygen and hydrogen-argon of 200ml per minute.
FIG. 5 is a graph showing the mass change of ferrous oxide powders of different masses from 100 to 1000 ℃ in 200ml of air, argon, oxygen and hydrogen-argon mixture per minute.
FIG. 6 is a graph showing the mass change curves of different masses of ferroferric oxide powder from 100 to 1000 ℃ in 200ml of air, argon, oxygen and hydrogen-argon mixed gas per minute.
FIG. 7 is a graph showing the mass change of iron sesquioxide powders of different masses from 100 to 1000 ℃ in 200ml of a mixture of air, argon, oxygen and hydrogen-argon per minute.
The two-path air inlet thermal analyzer for the transition metal powder reaction has the advantages of simple structure and convenience in operation, and can effectively improve the stability and accuracy of the test.
It is understood that different embodiments among the components in the above embodiments can be combined and implemented, and the embodiments are only for illustrating the implementation of specific structures and are not limited to the implementation of the embodiments.
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 gist of the present invention.
Claims (8)
1. The two-path air inlet thermal analyzer for the transition metal powder reaction 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 body 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);
a first gas path (6) is arranged at the inner bottom of the main body (1), a first valve (7) is arranged on the first gas path (6), a second gas path (8) is arranged on the outer wall of the main body (1), and a second valve (9) is arranged on the second gas path (8);
the gas path I (6), the gas path II (8) and the gas 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 three on outlet duct (11).
2. The two-way gas inlet thermal analyzer for transition metal powder reactions according to claim 1, characterized in that the upper end of the cover (10) is provided with a guard ring (12).
3. The two-way gas inlet thermal analyzer for transition metal powder reaction according to claim 2, characterized in that the guard ring (12) is provided with through holes (13).
4. The two-way intake thermal analyzer for transition metal powder reactions according to claim 1, characterized in that the bottom of the cover (10) is provided with a gasket (14) for sealing connection with the main body (1).
5. The two-way air inlet thermal analyzer for transition metal powder reaction of claim 1, characterized in that the bottom of the cover body (10) is provided with a connecting ring (15), the outer wall of the connecting ring (15) is provided with a thread, and the inner top of the main body (1) is provided with a thread groove matched with the thread.
6. The two-way gas inlet thermal analyzer for transition metal powder reaction of claim 1, characterized in that an external pipeline (16) is connected to the second gas circuit (8).
7. The two-way inlet thermoanalyzer for transition metal powder reactions according to claim 6, characterized in that the gas discharged from the external line (16) is air, argon, oxygen or a mixture of hydrogen and argon.
8. The two-way inlet gas thermal analyzer for transition metal powder reaction of claim 1, wherein the two-way inlet gas thermal analyzer is applied to redox and desorption of metal powder and oxide.
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| Application Number | Priority Date | Filing Date | Title |
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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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| 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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