CN220099160U - A agitating unit blows for salt bath nitridation - Google Patents
A agitating unit blows for salt bath nitridation Download PDFInfo
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- CN220099160U CN220099160U CN202321657517.9U CN202321657517U CN220099160U CN 220099160 U CN220099160 U CN 220099160U CN 202321657517 U CN202321657517 U CN 202321657517U CN 220099160 U CN220099160 U CN 220099160U
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- air blowing
- blowing
- salt bath
- gas
- pipeline
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- 150000003839 salts Chemical class 0.000 title claims abstract description 50
- 238000007664 blowing Methods 0.000 claims abstract description 131
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 238000005121 nitriding Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 abstract description 6
- 238000010907 mechanical stirring Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000009835 boiling Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 2
- 238000005273 aeration Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-M cyanate Chemical compound [O-]C#N XLJMAIOERFSOGZ-UHFFFAOYSA-M 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model discloses a blowing stirring device for salt bath nitriding, which comprises: the air pipe and the air blowing pipeline are arranged at one end of the air pipe; the vent pipe is arranged in the crucible, and the vent pipe is Z-shaped; a clamping plate is arranged between the vent pipe and the air blowing pipeline, both ends of the air blowing pipeline are arranged in the clamping plate, the vent pipe is communicated with the air blowing pipeline, the air blowing pipeline is arranged at the bottom of the crucible, the pipe body of the air blowing pipeline is in an annular shape, and a plurality of air blowing ports are formed in the outer surface of the air blowing pipeline. According to the utility model, through the matching arrangement of the vent pipe, the air blowing pipeline and the air blowing port, high-speed air flow enters the air blowing pipeline from the vent pipe and is sprayed out from the air blowing port, so that salt bath is in boiling convection, the stirring effect is achieved, and compared with the traditional mechanical stirring, the salt bath has the advantages of small occupied space, easy replacement, simple manufacture, low cost of later use and maintenance, and the like, and can be used for selecting relatively cheap materials.
Description
Technical Field
The utility model relates to the technical field of nitriding process equipment, in particular to a blowing stirring device for salt bath nitriding.
Background
The salt bath nitriding process is an environment-friendly nitrocarburizing treatment process which has been widely applied in the world industry field. Immersing the workpiece in a salt bath rich in [ N ] [ C ] at about 580 ℃ to allow [ N ] [ C ] atoms of nascent state in the salt bath to permeate and diffuse into the interior of the part, forming a compound layer on the surface layer of the part, and forming a diffusion layer on the sub-layer; the salt bath nitriding has the advantages of high infiltration speed, good wear resistance of an infiltration layer and small deformation of a product, so that the salt bath nitriding can be widely applied to some functional precision parts.
In order to ensure the uniformity of each component and the temperature uniformity in the salt bath, the salt bath needs to be stirred; the conventional mechanical stirring occupies the space of the furnace, reduces the number of a batch of salt bath nitriding parts, and the mechanical stirring shaft and blades are easy to corrode and damage in the salt bath nitriding atmosphere, and the rotating part is continuously contacted with high temperature, so that the wear resistance of the bearing is reduced.
Accordingly, there is a need to provide a blowing stirring device for salt bath nitridation to solve the above-mentioned technical problems.
Disclosure of Invention
The utility model overcomes the defects of the prior art and provides the blowing stirring device for the nitriding of the salt bath.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a gas-blowing stirring device for salt bath nitridation, comprising: the air blowing device comprises an air pipe and an air blowing pipeline arranged at one end of the air pipe;
the breather pipe is arranged in the crucible, and the shape of the breather pipe is Z-shaped;
the novel crucible is characterized in that a clamping plate is arranged between the vent pipe and the blowing pipeline, two ends of the blowing pipeline are arranged in the clamping plate, the vent pipe is communicated with the blowing pipeline, the blowing pipeline is arranged at the bottom of the crucible, the pipe body of the blowing pipeline is in an annular shape, and a plurality of blowing ports are formed in the outer surface of the blowing pipeline.
In a preferred embodiment of the utility model, the annular pipe body of the blowing pipe is concentric with the crucible.
In a preferred embodiment of the present utility model, one end of the air blowing pipe is connected to the ventilation pipe, and the other end of the air blowing pipe is a blocking end.
In a preferred embodiment of the present utility model, the aperture of the air blowing opening ranges from 0.5 mm to 1.0mm.
In a preferred embodiment of the present utility model, the plurality of air outlets are distributed in an annular array. .
In a preferred embodiment of the present utility model, the air blowing port includes: a straight air blowing port and an inclined air blowing port; the straight air blowing port is vertically and upwards arranged, and the inclined air blowing port is arranged on the inner side of the air blowing pipeline, faces upwards and forms an included angle of 40-50 degrees with the horizontal plane.
In a preferred embodiment of the present utility model, the plurality of straight air-blowing ports and the plurality of inclined air-blowing ports are staggered.
In a preferred embodiment of the present utility model, a threaded connection portion is provided at an upper end of the vent pipe.
In a preferred embodiment of the utility model, the length of the vent tube is greater than the height of the crucible.
In a preferred embodiment of the present utility model, the vertical portion of the vent pipe is disposed near the side wall of the crucible, and the horizontal portion of the lower end of the vent pipe is disposed at the bottom of the crucible.
The utility model solves the defects existing in the background technology, and has the following beneficial effects:
(1) According to the utility model, through the matching arrangement of the vent pipe, the air blowing pipeline and the air blowing port, high-speed air flows enter the air blowing pipeline from the vent pipe and then are sprayed out from the air blowing port, so that salt bath is in boiling convection, the stirring effect is achieved, and compared with the traditional mechanical stirring, the salt bath stirring device has the advantages of small occupied space, easiness in replacement, simple manufacture, low cost in later use and maintenance, and relatively low cost.
(2) According to the utility model, the annular blowing pipeline is arranged at the bottom of the crucible, the plurality of blowing ports are distributed on the blowing pipeline and are divided into the vertical upward straight blowing port and the inclined blowing port with the inner side inclined upwards by a certain angle, and the two distributed blowing ports spray high-speed air flows which are upwards moved under the action of the buoyancy force, so that the salt bath at the central part of the crucible is upwards convected, the stirring purpose is achieved, and the uniformity of each component in the salt bath and the uniformity of the temperature are improved.
(3) The utility model uses aeration and stirring, and oxygen in the air oxidizes harmful byproducts in the salt bath, and simultaneously forms components required by nitriding, thereby reducing the cost of raw materials.
Drawings
The utility model is further described below with reference to the drawings and examples;
FIG. 1 is a perspective view of a preferred embodiment of the present utility model;
FIG. 2 is a perspective view of the blow pipe according to the preferred embodiment of the present utility model;
FIG. 3 is a block diagram of the two ends of the blow tube in the card in accordance with the preferred embodiment of the utility model;
fig. 4 is a schematic view showing the position and structure of a blowhole according to a preferred embodiment of the present utility model.
In the figure: 1. a vent pipe; 2. a clamping plate; 3. an air blowing pipeline; 4. an air blowing port; 41. a straight air blowing port; 42. an oblique air blowing port; 5. a crucible; 6. a threaded connection.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.
As shown in fig. 1, a gas-blowing stirring device for salt bath nitriding, comprising: a vent pipe 1 and an air blowing pipeline 3 arranged at one end of the vent pipe 1; the breather pipe 1 is arranged in the crucible 5, and the shape of the breather pipe 1 is Z-shaped;
the breather pipe 1 can use the common materials on the market, has the characteristics of high temperature resistance, corrosion resistance and the like, one end of the breather pipe 1 is connected with the blowing pipeline 3, the other end is connected with the fan, and the fan adopts an aeration fan or an air compressor with a certain component and pressure and the like to forcedly introduce air into the salt bath.
Crucible 5 is a commercially available material for use in salt bath nitriding processes and is made of a high temperature resistant material, such as austenitic heat resistant steel. These materials have good high temperature stability and corrosion resistance and can withstand corrosion and melting of high temperature salt baths.
As shown in fig. 2 and 3, a clamping plate 2 is arranged between a vent pipe 1 and an air blowing pipeline 3, both ends of the air blowing pipeline 3 are arranged in the clamping plate 2, the vent pipe 1 is communicated with the air blowing pipeline 3, the air blowing pipeline 3 is arranged at the bottom of a crucible 5, the pipe body of the air blowing pipeline 3 is in an annular shape, and a plurality of air blowing ports 4 are formed in the outer surface of the air blowing pipeline 3; the annular pipe body of the blowing pipe 3 is concentric with the crucible 5.
The air blowing pipe 3 can be made of common materials in the market and has the characteristics of high temperature resistance, corrosion resistance and the like. The tubular body of the air blowing pipeline 3 is twisted into a ring shape, the ring-shaped tubular body and the crucible 5 are concentric, the air blowing pipeline 3 is guaranteed to be arranged at the central part of the crucible 5, the two ends of the air blowing pipeline 3 are clamped inside the clamping plate 2, the two ends of the air blowing pipeline 3 are fixed by the clamping plate 2, shaking is prevented from occurring, and higher stability is provided. The common connection mode between the ventilating pipe 1 and the air blowing pipeline 3 is not repeated here, the connection part is also arranged in the clamping plate 2, the clamping plate 2 is divided into an upper plate and a lower plate, the two ends of the ventilating pipe 1 and the air blowing pipeline 3 are respectively arranged between the upper plate and the lower plate, and the upper plate and the lower plate are fixed through a plurality of bolts.
The high-speed air flow enters the air blowing pipeline 3 from the air pipe 1 and is sprayed out from the air blowing port 4, so that salt bath is in boiling convection, the stirring effect is achieved, and compared with the traditional mechanical stirring, the salt bath stirring device has the advantages of small occupied space, easiness in replacement, simple manufacture, low cost in later use and maintenance, and relatively low cost, and is arranged in a matched mode between the air pipe 1, the air blowing pipeline 3 and the air blowing port 4.
In the core process of the salt bath composite treatment technology during nitriding, active nitrogen atoms are generated by the tapping of cyanate CNO-in the nitriding salt bath, so that a compound with high wear resistance and corrosion resistance and a fatigue-resistant diffusion layer are formed on the surface of the metal. While stirring the cyanide CN < - > in the salt carried out of the furnace by the workpiece, the cyanide CN < - > is oxidized and decomposed by oxygen in the air, so that the pollution is eliminated, the components required by nitriding are formed, and the raw material cost is reduced.
In this embodiment, one end of the air blowing pipe 3 is connected to the ventilation pipe 1, and the other end of the air blowing pipe 3 is a plugging end.
One end of the air blowing pipeline 3 is connected with the vent pipe 1 and used for introducing air into the air blowing pipeline 3, the other end of the air blowing pipeline 3 is blocked, the air can be sprayed out of the air blowing port 4 only, the sprayed air has higher pressure, and better stirring effect is achieved.
In this embodiment, the aperture of the air-blowing port 4 is in the range of 0.5-1.0mm.
The aperture of the air blowing port 4 is preferably 0.7mm, smaller aperture can generate smaller and denser air bubbles, the residence time of the air bubbles in water is longer, the salt bath can be better caused to generate convection, and the stirring uniformity is better.
As shown in fig. 2 and 4, the plurality of air outlets 4 are distributed in an annular array; the blow port 4 includes: a straight air-blowing port 41 and an inclined air-blowing port 42; the straight air blowing port 41 is vertically upwards opened; the inclined air blowing port 42 is arranged on the inner side of the air blowing pipeline 3 upwards and forms an included angle of 40-50 degrees with the horizontal plane; the plurality of straight air blowing ports 41 and the plurality of inclined air blowing ports 42 are arranged in a staggered manner.
The annular blowing pipeline 3 is arranged at the bottom of the crucible 5, the plurality of blowing ports 4 are distributed on the blowing pipeline 3, the blowing ports 4 are divided into a vertical upward straight blowing port 41 and an inclined blowing port 42 with the inner side inclined upwards by a certain angle, the inclined angle of the inclined blowing port 42 is preferably 45 degrees, the two distributed blowing ports 4 spray high-speed air flows which are upwards moved under the action of buoyancy, so that salt bath in the central part of the crucible 5 is upwards convected, the stirring purpose is achieved, and the uniformity of each component and the uniformity of temperature in the salt bath are improved.
As shown in fig. 1, the upper end of the vent pipe 1 is provided with a threaded connection part 6; the length of the vent pipe 1 is larger than the height of the crucible 5; the vertical portion of the breather pipe 1 is arranged near the side wall of the crucible 5, and the lower end horizontal portion of the breather pipe 1 is arranged at the bottom of the crucible 5.
The upper end of the breather pipe 1 extends to the upper part of the crucible 5 and is communicated with an external device fan through the threaded connection part 6, so that the breather pipe is convenient to detach and replace, and the time cost of later maintenance is reduced. The vertical part of the breather pipe 1 is close to the side wall of the crucible 5, so that the problem that the placing space of a salt bath nitriding tool is affected due to the obstruction in the salt bath nitriding process of parts can be avoided.
When the utility model is used, firstly, a salt bath rich in [ N ] [ C ] melting at about 580 ℃ is filled in the crucible 5, then, high-pressure air is generated by an external fan and enters the air blowing pipeline 3 through the air pipe 1, the air can only be sprayed out of the straight air blowing port 41 and the inclined air blowing port 42 in the air blowing pipeline 3, and moves upwards from the bottom of the salt bath to force the salt bath to convect, so that the stirring purpose is achieved.
The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (10)
1. A gas-blowing stirring device for salt bath nitridation, comprising: breather pipe (1), with set up in blow pipeline (3) of breather pipe (1) one end, its characterized in that:
the breather pipe (1) is arranged in the crucible (5), and the shape of the breather pipe (1) is Z-shaped;
the novel gas blowing device is characterized in that a clamping plate (2) is arranged between the vent pipe (1) and the gas blowing pipeline (3), two ends of the gas blowing pipeline (3) are arranged in the clamping plate (2), the vent pipe (1) is communicated with the gas blowing pipeline (3), the gas blowing pipeline (3) is arranged at the bottom of the crucible (5), the pipe body of the gas blowing pipeline (3) is in an annular arrangement, and a plurality of gas blowing ports (4) are formed in the outer surface of the gas blowing pipeline (3).
2. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the annular pipe body of the air blowing pipeline (3) and the crucible (5) are concentric.
3. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: one end of the air blowing pipeline (3) is connected with the vent pipe (1), and the other end of the air blowing pipeline (3) is a plugging end.
4. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the aperture range of the air blowing opening (4) is 0.5-1.0mm.
5. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the air blowing ports (4) are distributed in an annular array.
6. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the blow port (4) includes: a straight air blowing port (41) and an inclined air blowing port (42); the straight air blowing port (41) is vertically and upwards arranged, and the inclined air blowing port (42) is arranged on the inner side of the air blowing pipeline (3) upwards and forms an included angle of 40-50 degrees with the horizontal plane.
7. A gas-blowing stirring apparatus for salt bath nitriding as set forth in claim 6, wherein: the straight air blowing ports (41) and the inclined air blowing ports (42) are arranged in a staggered mode.
8. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the upper end of the breather pipe (1) is provided with a threaded connection part (6).
9. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the length of the vent pipe (1) is larger than the height of the crucible (5).
10. A gas-blowing stirring device for salt bath nitriding as set forth in claim 1, wherein: the vertical part of the vent pipe (1) is close to the side wall of the crucible (5), and the horizontal part of the lower end of the vent pipe (1) is arranged at the bottom of the crucible (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321657517.9U CN220099160U (en) | 2023-06-28 | 2023-06-28 | A agitating unit blows for salt bath nitridation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321657517.9U CN220099160U (en) | 2023-06-28 | 2023-06-28 | A agitating unit blows for salt bath nitridation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220099160U true CN220099160U (en) | 2023-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321657517.9U Active CN220099160U (en) | 2023-06-28 | 2023-06-28 | A agitating unit blows for salt bath nitridation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220099160U (en) |
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2023
- 2023-06-28 CN CN202321657517.9U patent/CN220099160U/en active Active
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