CN113862608B - Carburizing medium injection device - Google Patents
Carburizing medium injection device Download PDFInfo
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- CN113862608B CN113862608B CN202111128399.8A CN202111128399A CN113862608B CN 113862608 B CN113862608 B CN 113862608B CN 202111128399 A CN202111128399 A CN 202111128399A CN 113862608 B CN113862608 B CN 113862608B
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- Prior art keywords
- spraying
- carburizing
- medium
- pipe
- sputtering
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- 238000005255 carburizing Methods 0.000 title claims abstract description 116
- 238000002347 injection Methods 0.000 title claims abstract description 65
- 239000007924 injection Substances 0.000 title claims abstract description 65
- 238000005507 spraying Methods 0.000 claims abstract description 74
- 238000004544 sputter deposition Methods 0.000 claims abstract description 58
- 230000003116 impacting effect Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000000889 atomisation Methods 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 4
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000005271 boronizing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LBPGGVGNNLPHBO-UHFFFAOYSA-N [N].OC Chemical compound [N].OC LBPGGVGNNLPHBO-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/20—Carburising
Abstract
The invention relates to the technical field of heat treatment, and discloses a carburizing medium injection device which is used for forming a carburizing atmosphere in a carburizing furnace and comprises the following components: a medium container for holding a carburizing medium; the pressurizing device is communicated with the medium container through a first conveying pipe; the spraying device is communicated with the pressurizing device through a second conveying pipe and comprises a spraying pipe, the spraying end of the spraying pipe is arranged in the carburizing furnace, a sputtering plate is arranged at the spraying end of the spraying pipe, the spraying plate and the spraying end form a spraying opening, and carburized media sprayed out of the spraying end are sprayed outwards from the spraying opening after impacting on the sputtering plate. Through the structure, the carburizing medium injection device can promote rapid atomization and cracking of the carburizing medium in the carburizing furnace, effectively avoid the blockage of the pipeline, and is favorable for ensuring uniform carburizing atmosphere.
Description
Technical Field
The invention relates to the technical field of heat treatment, in particular to a carburizing medium spraying device.
Background
Carburization is one of the metal surface treatment processes, and is a chemical heat treatment process in which carbon atoms penetrate the surface of a workpiece by heating and maintaining the temperature of the workpiece in a carburization medium. Carburization is already one of the most widely used chemical heat treatment processes in the machine-building industry today. At present, gas carburization is widely applied due to the characteristics of high production efficiency, easy realization of mechanical and automatic production and the like.
Generally, the carburizing medium for gas carburization includes Rx endothermic atmosphere, directly generated atmosphere, nitrogen methanol atmosphere, and instillation atmosphere. Wherein, in nitrogen-methanol atmosphere and instilling atmosphere, liquid such as methanol, ethanol, ethyl acetate, isopropanol and the like is introduced into a carburizing furnace at high temperature, and the liquid is gasified at high temperature and then is cracked to generate CO and H 2 And activated carbon atoms, etc., which penetrate through the work surface to form a carburized layer.
In the prior art, a liquid medium mainly instills into a carburizing furnace through a pipeline, and can be atomized and cracked in time under the condition of small instilling amount of the liquid medium, but when the amount of the liquid medium required to be provided is increased, the instilling pipeline is easy to generate the problems of insufficient atomization, pipeline blockage and the like, so that the depth of a carburized layer on the surface of a workpiece is inconsistent with the concentration of carbon on the surface, and the problems of uneven depth of an effective hardening layer, large heat treatment deformation, black spots on the surface of the workpiece and the like are caused on the workpiece after heat treatment.
Disclosure of Invention
The invention aims to provide a carburizing medium injection device which can promote rapid atomization and cracking of a carburizing medium in a carburizing furnace, effectively avoid pipeline blockage and is beneficial to ensuring uniform carburizing atmosphere.
To achieve the purpose, the invention adopts the following technical scheme:
a carburizing medium injecting device for forming a carburizing atmosphere in a carburizing furnace, comprising:
a media container for holding a carburizing media;
the pressurizing device is communicated with the medium container through a first conveying pipe;
the spraying device is communicated with the pressurizing device through a second conveying pipe, the spraying device comprises a spraying pipe, the spraying end of the spraying pipe is arranged in the carburizing furnace, a sputtering plate is arranged at the spraying end of the spraying pipe, the sputtering plate and the spraying end form a spraying opening, and carburized medium sprayed out of the spraying end is sprayed outwards from the spraying opening after impacting on the sputtering plate.
As a preferable mode of the carburizing medium spraying device, a stirring fan is arranged at one side of the spraying opening in the carburizing furnace, and the stirring fan is used for promoting the atomizing diffusion of the carburizing medium.
As a preferable mode of the carburized medium jetting device, the height of the center of the jetting port is equal to the center height of the blade of the stirring fan.
As a preferable mode of the carburized medium jetting device, a sputtering surface of the sputtering plate faces to a blade of the stirring fan.
As a preferred embodiment of the carburized medium spraying device, the angle B between the sputtering surface of the sputtering plate and the axis of the spraying pipe is set to be 90 ° -145 °.
As a preferable mode of the carburized medium jetting device, a vertical distance from a center of the jetting end to the sputtering plate is 1 to 5 times an inner diameter of the jetting pipe.
As a preferred embodiment of the carburized medium injection device, a pressure gauge is provided on the second conveying pipe, and the pressure gauge is used for detecting the pressure of the carburized medium in the second conveying pipe.
As a preferred embodiment of the carburized medium injection device, the second pipe is provided with an on-off valve, which is located between the pressure gauge and the injection device.
As a preferable mode of the carburized medium injection device, a check valve is arranged on the second conveying pipe, and the check valve is positioned between the switch valve and the injection device.
As a preferable scheme of the carburizing medium injection device, the injection pipe is in sealing connection with the carburizing furnace, and the input end of the injection pipe is arranged outside the carburizing furnace and is connected with the second conveying pipe.
The invention has the beneficial effects that:
the invention provides a carburizing medium injection device which is used for forming a carburizing atmosphere in a carburizing furnace, and comprises a medium container, a pressurizing device and an injection device, wherein the medium container is used for containing a carburizing medium, the pressurizing device is communicated between the medium container and the injection device, the carburizing medium can be sucked and pressurized and conveyed to the injection device, a sputtering plate is arranged at the injection end of an injection pipe in the injection device, the sputtering plate and the injection end form an injection port, the carburizing medium sprayed by the injection end under a certain pressure is sprayed after impacting on the sputtering plate, the small liquid drops are sprayed outwards from the injection port in the form of small liquid drops, and the sprayed small liquid drops can be rapidly atomized and cracked in the carburizing furnace to form a uniform atmosphere, so that the blockage of a pipeline can be effectively avoided, and the uniformity of the carburizing atmosphere is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments of the present invention, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the contents of the embodiments of the present invention and these drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a carburized medium injection device according to an embodiment of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
In the figure:
1. a supercharging device; 12. a second delivery tube; 121. a pressure gauge; 122. a switch valve; 123. a one-way valve; 2. a jet pipe; 21. a sputtering plate; 3. a carburizing furnace; 31. stirring fan.
Detailed Description
In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first feature and the second feature being in direct contact, and may also include both the first feature and the second feature not being in direct contact but being in contact with each other by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The technical scheme of the carburizing medium spraying device provided by the invention is further described below by means of specific embodiments in combination with the attached drawings.
As shown in fig. 1, the present embodiment provides a carburizing medium injection device for forming a carburizing atmosphere in a carburizing furnace 3, where the carburizing medium injection device includes a medium container (not shown in the drawing), a pressurizing device 1 and an injection device, the medium container is used for holding a carburizing medium in a normal pressure state, the pressurizing device 1 is connected between the medium container and the injection device, and is capable of pressurizing and delivering the carburizing medium in the medium container to the injection device after sucking, and the carburizing medium injected by the injection device under a certain pressure can be atomized and cracked in the carburizing furnace 3 rapidly to form a uniform atmosphere, so that not only can the pipe blockage be effectively avoided, but also the uniformity of the carburizing atmosphere can be guaranteed.
Preferably, the pressure range of the carburized medium after being pressurized by the pressurizing device 1 is 0.03MPa-0.8MPa, so that the carburized medium can be sprayed out of the spraying device at a certain speed, and the blockage of a pipeline is effectively avoided. In the embodiment, the pressure of the carburizing medium after being pressurized by the pressurizing device 1 is 0.4MPa, so that the pipeline blockage can be effectively avoided, the pressurizing device 1 can work with smaller power, and electric energy can be saved. It will be appreciated that the pressure of the carburizing medium pressurized by the pressurizing device 1 may be set by those skilled in the art according to the actual situation. In the present embodiment, the pressurizing device 1 may be pressurized by a tank pressurizing method or a pressurizing method such as adding a pump.
In this embodiment, the injection device includes an injection tube 2, an injection end of the injection tube 2 is disposed in an inner cavity of the carburizing furnace 3, and the injection tube 2 injects carburizing medium into the inner cavity of the carburizing furnace 3 through the injection end, so that the carburizing medium is rapidly atomized and cracked in the carburizing furnace 3, and a carburizing atmosphere is formed. Specifically, the injection pipe 2 is in sealing connection with the carburizing furnace 3, the input end of the injection pipe 2 is arranged outside the carburizing furnace 3, and the injection end of the injection pipe 2 is arranged in the inner cavity of the carburizing furnace 3, so that part of the injection pipe 2 is arranged in the inner cavity of the carburizing furnace 3, the heated volume of the injection pipe 2 due to the arrangement in the carburizing furnace 3 can be reduced, and the risk of damage of the injection pipe 2 due to heating is reduced.
Preferably, as shown in fig. 2, the spraying end of the spraying pipe 2 is provided with a sputtering plate 21, the sputtering plate 21 and the spraying end form a spraying opening, so that a semi-open structure is formed on the spraying end, carburized medium sprayed by the spraying end is sprayed after impacting on the sputtering plate 21, tiny water droplets are formed by the carburized medium, the tiny water droplets are sprayed outwards from the spraying opening in the form of small droplets, and the sprayed small droplets can be rapidly atomized and cracked in the carburizing furnace 3, so that a uniform carburizing atmosphere is formed. Because the surface area of the small liquid drops formed by sputtering is greatly larger than that of carburized medium instilled in the prior art, the carburized medium can be rapidly atomized and cracked in the carburizing furnace 3, and the accumulation of the carburized medium in the injection pipe 2 is avoided, so that the blockage of a pipeline is effectively avoided. It should be noted that the connection between the sputtering plate 21 and the spraying end should avoid the inner hole of the spraying end, so that the half-open structure on the spraying end can cover the entire inner hole of the spraying end.
In this embodiment, the vertical distance between the sputtering surface of the sputtering plate 21 and the center of the spraying end is set to be 1-5 times of the inner diameter of the spraying pipe 2, so that not only is sufficient space for sputtering generated when the carburized medium sprayed by the spraying end impacts the sputtering surface of the sputtering plate 21 guaranteed, small liquid drops are facilitated to be formed, but also the carburized medium sprayed by the spraying end is guaranteed to impact the sputtering surface of the sputtering plate 21 with sufficient impact force, so that the sputtering distance of the carburized medium is guaranteed, and a better sputtering effect is achieved. Specifically, the vertical distance of the sputtering face of the sputtering plate 21 from the center of the ejecting end in the present embodiment is 3 times the inner diameter of the ejecting pipe 2, which is advantageous in obtaining a good sputtering effect of carburized medium. It will be appreciated that the vertical distance of the sputtering face of the sputtering plate 21 from the center of the sputtering tip can be adjusted by those skilled in the art depending on the actual situation.
Further, as shown in fig. 2, the included angle B between the sputtering surface of the sputtering plate 21 and the axis of the injection pipe 2 is set to 90 ° -145 °, so that the sputtering plate 21 and the injection end form an injection port with a certain angle or orientation, which is not only convenient for controlling the sputtering range of the carburizing medium, but also beneficial for obtaining small droplets of the carburizing medium with a larger surface area, and facilitating the rapid atomization and cracking of the carburizing medium in the carburizing furnace 3. Specifically, the sputtering face of the sputtering plate 21 in this embodiment has an angle B of 67.5 ° with the axis of the injection tube 2, and the carburized medium has a good sputtering effect. It will be appreciated that the angle between the sputtering surface of the sputtering plate 21 and the axis of the injection tube 2 can be set by those skilled in the art according to the actual situation, so that the carburizing medium has a good sputtering effect, and thus can be atomized and cracked rapidly in the carburizing furnace 3.
The pipe wall thickness of the injection pipe 2 is set to withstand the pressure of the carburizing medium, and the inner hole diameter of the injection pipe 2 should be as small as possible when the carburizing medium inflow rate is satisfied, which contributes to the improvement of the safety of the carburizing medium injection device.
In this embodiment, the stirring fan 31 is disposed on the side of the carburizing furnace 3 near the injection port, and the stirring fan 31 can accelerate the flow speed of air in the inner cavity of the carburizing furnace 3, thereby promoting rapid atomization and diffusion of the carburizing medium, and facilitating formation of a uniform carburizing atmosphere.
Preferably, the height of the center of the jet opening of the jet pipe 2 is equal to the center height of the fan blade of the stirring fan 31, so that small droplets of carburized medium can timely enter the influence area of the stirring fan 31, and atomization and cracking of the small droplets and circulating flow in the inner cavity of the carburizing furnace 3 are facilitated to be quickened. Further, the sputtering surface of the sputtering plate 21 faces the fan blade of the stirring fan 31, so that the spraying opening formed by the sputtering plate 21 and the spraying end faces the fan blade of the stirring fan 31, and the sprayed carburized medium droplets timely enter the influence area of the stirring fan 31, which is beneficial to obtaining better atomization and circulation effects.
In this embodiment, the pressurizing device 1 is connected to the medium container through a first conveying pipe (not shown in the figure) and is connected to the input end of the injection pipe 2 through a second conveying pipe 12, and the pressurizing device 1 can suck the normal pressure carburized medium in the medium container, pressurize the medium container and convey the pressurized carburized medium to the injection pipe 2.
Preferably, the second conveying pipe 12 is provided with a pressure gauge 121, and the pressure gauge 121 is used for detecting the pressure of the carburizing medium in the second conveying pipe 12, so that an operator can know the pressure of the carburizing medium in the second conveying pipe 12 in time, and the pressure of the carburizing medium in the spraying pipe 2 can be guaranteed, and the sputtering effect of the carburizing medium on the sputtering surface of the sputtering plate 21 can be guaranteed. Further, the second conveying pipe 12 is provided with a switch valve 122, the switch valve 122 is located between the pressure gauge 121 and the injection device, and when the pressure gauge 121 shows that the pressure of the carburizing medium in the second conveying pipe 12 is too low, an operator can close the conveying of the carburizing medium through the switch valve 122, so that the second conveying pipe 12 or the injection pipe 2 is prevented from being blocked due to the too low pressure of the carburizing medium. More preferably, the switch valve 122 is a solenoid valve, which is not only convenient for an operator to operate the switch valve 122, but also beneficial for the subsequent automatic control.
Preferably, the carburizing medium injection device further comprises a controller, the controller is electrically connected with the pressure gauge 121 and the switch valve 122, and when the pressure gauge 121 detects that the pressure of the carburizing medium in the second conveying pipe 12 is lower than a preset pressure value, the controller can control the switch valve 122 to close conveying of the carburizing medium, so that blocking of the second conveying pipe 12 or the injection pipe 2 caused by too low pressure of the carburizing medium is avoided. In this embodiment, the controller may be a centralized or distributed controller, for example, the controller may be a single-chip microcomputer, or may be a distributed multi-chip microcomputer, where a control program may be run in the single-chip microcomputer, so as to control the switch valve 122 to implement its function.
In the present embodiment, the second transfer pipe 12 is further provided with a check valve 123, and the check valve 123 is located between the on-off valve 122 and the injection device, so that the carburizing medium can be prevented from flowing back due to the influence of the pressure in the carburizing furnace 3.
It will be appreciated that the carburizing medium spraying device can also be used in heat treatment processes such as nitriding, boronizing and the like, by sucking in the nitriding medium, boronizing medium and pressurizing, for forming a carburizing atmosphere, boronizing atmosphere in the furnace.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. A carburizing medium injecting device for forming a carburizing atmosphere in a carburizing furnace (3), characterized by comprising:
a media container for holding a carburizing media;
the pressurizing device (1) is communicated with the medium container through a first conveying pipe, the pressurizing device (1) can absorb the carburizing medium in the medium container and pressurize the carburizing medium, and the pressure of the carburizing medium after being pressurized by the pressurizing device (1) is 0.4MPa;
the spraying device is communicated with the pressurizing device (1) through a second conveying pipe (12), the spraying device comprises a spraying pipe (2), the spraying end of the spraying pipe (2) is arranged in the carburizing furnace (3), a sputtering plate (21) is arranged at the spraying end of the spraying pipe (2), the sputtering plate (21) and the spraying end form a spraying opening, the spraying opening is of a semi-open structure, carburized medium sprayed by the spraying end is sprayed outwards from the spraying opening after impacting on the sputtering plate (21), and the sprayed carburized medium can be rapidly atomized and cracked in the carburizing furnace (3) to avoid accumulation of the carburized medium in the spraying pipe (2);
the included angle B between the sputtering surface of the sputtering plate (21) and the axis of the injection pipe (2) is set to be 90-145 degrees.
2. The carburizing medium spraying device according to claim 1, characterized in that a stirring fan (31) is provided in the carburizing furnace (3) at one side of the spraying port, the stirring fan (31) being used to promote the carburizing medium to be atomized and spread.
3. The carburizing medium spraying device according to claim 2, wherein the center of the spraying port is equal in height to the center of the blade of the stirrer fan (31).
4. The carburizing medium spraying device according to claim 2, wherein the sputtering surface of the sputtering plate (21) faces the fan blade of the stirrer fan (31).
5. The carburizing medium spraying device according to claim 1, characterized in that the vertical distance from the center of the spraying end to the sputtering plate (21) is 1-5 times the inner diameter of the spraying pipe (2).
6. The carburizing medium injection device of claim 1, characterized in that the second transporting pipe (12) is provided with a pressure gauge (121), the pressure gauge (121) being used for detecting the pressure of the carburizing medium in the second transporting pipe (12).
7. The carburizing medium injection device of claim 6, characterized in that the second transporting pipe (12) is provided with an on-off valve (122), the on-off valve (122) being located between the pressure gauge (121) and the injection device.
8. The carburizing medium spraying device according to claim 7, characterized in that the second transporting pipe (12) is provided with a check valve (123), the check valve (123) being located between the switch valve (122) and the spraying device.
9. The carburizing medium spraying device according to claim 1, wherein the spraying pipe (2) is inserted in the carburizing furnace (3) in a sealing manner, and the input end of the spraying pipe (2) is arranged outside the carburizing furnace (3) and is connected with the second conveying pipe (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111128399.8A CN113862608B (en) | 2021-09-26 | 2021-09-26 | Carburizing medium injection device |
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| CN202111128399.8A CN113862608B (en) | 2021-09-26 | 2021-09-26 | Carburizing medium injection device |
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| CN113862608B true CN113862608B (en) | 2024-03-01 |
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