CN116815111A - Ion nitriding furnace - Google Patents
Ion nitriding furnace Download PDFInfo
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- CN116815111A CN116815111A CN202310822267.8A CN202310822267A CN116815111A CN 116815111 A CN116815111 A CN 116815111A CN 202310822267 A CN202310822267 A CN 202310822267A CN 116815111 A CN116815111 A CN 116815111A
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- 238000005121 nitriding Methods 0.000 title claims abstract description 105
- 230000005684 electric field Effects 0.000 claims abstract description 65
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000002184 metal Substances 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims description 9
- 239000011810 insulating material Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 26
- 230000008569 process Effects 0.000 abstract description 22
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010438 heat treatment Methods 0.000 abstract description 7
- 150000002500 ions Chemical class 0.000 description 27
- 238000009792 diffusion process Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 7
- 238000001035 drying Methods 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000010445 mica Substances 0.000 description 4
- 229910052618 mica group Inorganic materials 0.000 description 4
- 238000010891 electric arc Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 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
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- 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
- C23C8/36—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 using ionised gases, e.g. ionitriding
- C23C8/38—Treatment of ferrous surfaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0006—Electric heating elements or system
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0073—Seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
- F27D2007/066—Vacuum
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
- F27D2009/0081—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge)
- F27D2009/0083—Cooling of charges therein the cooling medium being a fluid (other than a gas in direct or indirect contact with the charge) the fluid being water
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The application relates to an ion nitriding furnace, which relates to the field of workpiece heat treatment and comprises a base, a direct-current power supply, a positive electrode connecting piece and a cathode tray, wherein the cathode tray is fixedly connected to the upper surface of the base, the lower end of the positive electrode connecting piece is abutted to the base and sealed, the cathode tray is arranged at the upper end of the base and is used for placing a metal workpiece, the outer side of the positive electrode connecting piece is fixedly connected with a cold water circulating piece, one side of the positive electrode connecting piece is provided with an ammonia conveying piece, the base is communicated with a vacuumizing piece, the positive electrode connecting piece is electrically connected with the positive electrode of the direct-current power supply, and the cathode tray is electrically connected with the negative electrode of the direct-current power supply. The application forms a controllable electric field by adjusting the positive electrode connecting piece, has the effects of being easy to process the special-shaped workpiece and improving the seepage thickness and the seepage uniformity of the special-shaped workpiece.
Description
Technical Field
The application relates to the field of workpiece heat treatment, in particular to an ion nitriding furnace.
Background
The nitriding process refers to a process of penetrating nitrogen into the surface of metal, and can obtain higher surface hardness and wear resistance than carburization for nitriding metal, such as nitriding steel, and simultaneously, the nitriding process can also obtain higher bending fatigue strength than carburization, and can also improve the corrosion resistance of a workpiece,
nitriding treatment can be carried out on a metal workpiece by adopting an ion nitriding method, namely, in an ammonia-containing atmosphere, a furnace body is taken as an anode, a treated workpiece is taken as a cathode, a direct current voltage of hundreds of volts is applied between the anode and the cathode, and the surface of the workpiece and an ionization chemical heat treatment medium are heated by utilizing the glow discharge phenomenon of lean gas, so that nitrogen elements are permeated into the surface of the metal workpiece, and the ion nitriding is realized to improve the performance of the metal workpiece.
With respect to the related art described above, the applicant believes that in the ion nitriding process, when the workpiece being processed is a deformed workpiece, the nitriding treatment of the workpiece is constrained by the geometry of the workpiece, for example, the workpiece has a tip, a deep hole, etc., the workpiece with the tip is strongly discharged at the tip of the workpiece, causing the diffusion layer at the tip of the workpiece to be thicker, while the workpiece with the deep hole, the electric field strength is weakened by the metal workpiece, which may result in failure to form the diffusion layer or the diffusion layer to be formed to be thinner, i.e., the geometry of the workpiece may affect the nitriding effect during the nitriding process, thereby causing the problem of uneven diffusion layer.
Disclosure of Invention
In order to solve the problem that nitriding treatment is easy to be constrained by the geometric shape of a workpiece in the related technology, the application provides an ion nitriding furnace.
The application provides an ion nitriding furnace which adopts the following technical scheme:
the utility model provides an ion nitriding furnace, includes base, DC power supply, anodal switch-on piece, negative pole tray fixed connection in the base upper surface, the lower extreme of anodal switch-on piece with base butt and seal, the negative pole tray set up in the upper end of base and be used for placing metal workpiece, the outside fixedly connected with cold water circulation piece of anodal switch-on piece, one side of anodal switch-on piece is provided with ammonia delivery piece, base department intercommunication has the evacuation piece, anodal switch-on piece with DC power supply's positive pole electricity is connected, the negative pole tray with DC power supply's negative pole electricity is connected.
Through adopting above-mentioned technical scheme, at the in-process that carries out ion nitriding, operator accessible adjusts anodal regulating part, and then adjusts the electric field strength in the nitriding furnace, improves nitriding effect.
Optionally, the positive pole switch-on piece includes first vacuum bell jar, a plurality of first positive pole unit, first vacuum bell jar is high temperature resistant insulating material, the lower extreme of first vacuum bell jar with the base butt is sealed, a plurality of first positive pole unit fixed distribution in the surface of first vacuum bell jar, first positive pole unit with DC power supply's positive pole electricity is connected, through control different positions first positive pole unit with opening and closing between the DC power supply forms controllable electric field in the first vacuum bell jar.
By adopting the technical scheme, compared with the traditional ion nitriding treatment, the metal shell is connected with the positive electrode of the direct current power supply, and the cathode tray is connected with the negative electrode of the direct current power supply, so that the electric field formed by the application is more controllable; in the nitriding process, a part of first anode units are firstly connected with a direct current power supply, after nitriding for a period of time, then the other part of first anode units are connected with the direct current power supply, and the directions of electric fields formed by the connected first anode units are different, so that nitriding treatment is carried out on different positions of a metal workpiece, namely, the connection of different first anode units is controlled, so that a controllable electric field is formed, and the nitriding treatment is conveniently carried out on different positions of a special-shaped workpiece; for example, when the first anode unit at different positions is connected with a direct current power supply in terms of the position of the concave hole of the metal workpiece, for example, when the electric field direction formed by the connected first anode unit faces the position of the concave hole, the thickness of a seepage layer at the concave hole is increased; if the first anode unit with the electric field direction facing the tip position is reduced when the tip workpiece is processed, the thickness of the seepage layer at the tip of the tip workpiece is further controlled, and the phenomenon of uneven thickness of the seepage layer of the workpiece is reduced.
For the controllable electric field, all the first anode units can be simultaneously opened for nitriding treatment, after the treatment is carried out for a period of time, the first anode units with the electric field direction facing the thin permeation layer are connected, and nitriding treatment is carried out on the thin permeation layer, so that the nitriding layer is uniform, the phenomenon of uneven permeation layer of a workpiece is avoided, the formed electric field is controllable, the electric field is flexible to adjust, and the adjustment can be carried out for different special-shaped workpieces.
Meanwhile, compared with an adjusting mode of nitriding treatment by setting a magnetic field to form a controllable magnetic field, the nitriding treatment device has the advantages of good control stability, easiness in control compared with the magnetic field, low mean free path and stability reduction possibility caused by rotation and amplification of Lorentz force of the magnetic field.
Optionally, the positive electrode connecting piece comprises a second vacuum bell jar, the second vacuum bell jar is a conductive metal shell, the lower end of the second vacuum bell jar is abutted to the base and sealed, and the second vacuum bell jar is electrically connected with the positive electrode of the direct current power supply.
Through adopting above-mentioned technical scheme, because the whole anodal that connects of second vacuum bell jar this moment, in the in-process of nitriding, nitrogen hydrogen atom is ionized under high voltage direct current electric field, thereby form the plasma region between the negative and positive pole, and then make nitrogen and hydrogen positive ion bombard the work piece surface at a high speed, make the high kinetic energy of ion change into heat energy simultaneously, thereby heat the work piece surface to required temperature, simultaneously because the bombardment of ion, make the work piece surface produce atomic sputtering, and then obtain purifying, and adsorb and under diffusion effect, nitrogen infiltration work piece surface, through being connected with the positive electrode of DC power supply with the second vacuum bell jar, it is fast to have nitriding rate, the work piece warp little, the advantage that the energy consumption is few.
Optionally, the direct current power supply is a high-frequency direct current power supply or a pulse power supply.
By adopting the technical scheme, the direct current power supply is set to be a high-frequency direct current power supply, so that the load of a plurality of first anode units is easy to bear, the possibility of overlarge damage of the load of the direct current power supply is reduced, and the application can also adopt a pulse power supply, for example, by adopting a unidirectional pulse power supply, the unidirectional pulse power supply has the effect of automatic arc extinction, the transition from glow discharge to arc discharge is avoided, and the nitriding effect is improved.
Optionally, the direct current power supply is provided with one or more than one, the positive pole of the direct current power supply is electrically connected with a programmable switch, the programmable switch is electrically connected with the first anode unit, and one programmable switch is used for controlling the opening and closing of a single or a plurality of first anode units and the direct current power supply.
Through adopting above-mentioned technical scheme, through making DC power supply and program control switch control, and through the switching of program control switch control a plurality of first positive pole units, have the effect that control efficiency is high, degree of automation is high.
Optionally, still be provided with electric field auxiliary assembly on the base, electric field auxiliary assembly includes swivel becket, driving piece, arc pole, a plurality of second positive pole unit, the swivel becket rotate connect in the upper surface of base, driving piece fixed connection in the base is used for the drive the swivel becket rotates, the arc pole set up in the upper surface of swivel becket, a plurality of second positive pole unit is evenly fixed in the surface of arc pole, a plurality of second positive pole unit to the distance of the center of negative pole tray equals, a plurality of second positive pole unit with voltage between the negative pole tray equals, second positive pole unit with the electric field direction that the negative pole tray formed is towards the thinner department of metal work piece oozes the layer.
Through adopting above-mentioned technical scheme, through when first positive pole unit switch-on DC power supply's anodal, synchronous switch-on second positive pole unit, at this moment in the in-process of nitriding, the electric field that makes first positive pole unit and negative pole tray formation is to the whole nitriding treatment that carries out of metal work piece, simultaneously, the electric field that makes between second positive pole unit and the negative pole tray formation is to the nitriding treatment that carries out the nitriding treatment to the thinner department of metal work piece diffusion layer, compare in the mode of adjusting the switching of a part of first positive pole unit and DC power supply at every turn, has saved nitriding time, has improved nitriding efficiency.
Optionally, the driving piece includes driving motor, connecting gear, face gear, driving motor with base fixed connection, driving motor's output shaft fixedly connected with connecting gear, the lower extreme of swivel becket with face gear fixed connection, face gear with connecting gear meshing.
Through adopting above-mentioned technical scheme, when driving motor's output shaft rotates, drive connecting gear and rotate in step, through the meshing of connecting gear and face gear, make face gear rotate, further make the position of swivel becket and arc pole change, thereby make the position of second positive pole unit change, that is, make the electric field direction between second positive pole unit and the negative pole tray change, and then the operator of being convenient for carries out nitriding treatment to the different positions of metal work piece, especially the thinner department of the diffusion layer of work piece, it is more even to be the diffusion layer of work piece, improve work piece surface defect.
Optionally, the electric field auxiliary assembly further comprises a rotating piece arranged on the rotating ring, the rotating piece comprises a connecting motor, a worm and a worm wheel, an output shaft of the connecting motor is fixedly connected with the worm, the worm wheel is rotationally connected with the arc-shaped rod, and the worm wheel is meshed with the worm.
By adopting the technical scheme, when the output shaft connected with the motor rotates, the worm is driven to rotate, and the worm wheel and the arc-shaped rod rotate through the engagement of the worm and the worm wheel, so that the position of the second anode unit is adjusted in a small range, a controllable moving electric field is formed, and the nitriding precision is improved; meanwhile, an operator can also control the on-off of the second anode unit and the direct current power supply, so that the ion quantity bombarding the surface of the workpiece is increased, the temperature of the workpiece is further adjusted, a stable temperature field is formed in the ion nitriding process, and the influence on the nitriding quality due to inconsistent temperature of the workpiece in the nitriding workpiece is avoided.
Optionally, the electric field auxiliary assembly further includes an infrared positioner, the infrared positioner is detachably connected with the arc-shaped rod, and an infrared direction of the infrared positioner is the same as an electric field direction of the second anode unit towards the cathode tray.
Through adopting above-mentioned technical scheme, through setting up infrared locator, before carrying out nitriding, the operator can install infrared locator at first, makes driving motor and connection motor's output shaft motion, and then makes second positive pole unit and infrared locator fortune work, and then confirm the electric field direction of second positive pole unit, is convenient for carry out nitriding treatment to the thinner department of work piece cementation layer, after confirming the motion stroke of second positive pole unit, can take out infrared locator, makes driving motor and connection motor repeat above-mentioned motion, and then carries out nitriding treatment to the thinner department of work piece cementation layer.
Optionally, the cold water circulation piece includes casing, inlet tube, outlet pipe, casing fixed connection in the outside of anodal switch-on piece, anodal switch-on piece fixed connection in the casing, the shell of casing is the cavity setting, the lower extreme of casing with the inlet tube intercommunication, the upper end of casing with the outlet pipe intercommunication, the casing with the base seals the setting, the casing with be formed with thermal-insulated vacuum layer between the anodal switch-on piece, the evacuation piece stretches into thermal-insulated vacuum layer with in the anodal switch-on piece and be used for evacuating it.
Through adopting above-mentioned technical scheme, through set up thermal-insulated vacuum layer between casing and anodal switch-on piece, reduced the heat loss that arouses because of the radiation of glow discharge, under vacuum thermal-insulated layer and cold water circulation piece's effect, make the energy consumption reduce, improve the temperature non-uniformity that the work piece was brought because of heating and heat dissipation in the ion nitriding process simultaneously.
In summary, the present application includes at least one of the following beneficial technical effects:
1. by arranging a plurality of first anode units, in the nitriding process, part of the first anode units can be started at first to carry out nitriding treatment on the part of the metal workpiece, after a period of time, the first anode units of other parts are started to carry out nitriding treatment on other parts of the metal workpiece, and by adjusting the opening and closing of the first anode units at different positions, electric fields with different directions are formed, and by forming controllable electric fields, nitriding treatment is carried out on deep holes or tip workpieces; meanwhile, the operator can also reduce the number of starting the first anode units, so that the number of ions sputtered to the surface of the workpiece is reduced, the temperature of the workpiece is further regulated, and the temperature non-uniformity in the nitriding process is improved;
2. by arranging the arc-shaped rod and the second anode unit, the arc-shaped rod and the second anode unit move to form a moving electric field, so that nitriding treatment is conveniently carried out on the thinner part of the diffusion layer, and the application can synchronously start the second anode unit while starting the first anode unit, wherein the first anode unit is used for nitriding the whole workpiece, and the second anode unit is used for nitriding the thinner part of the diffusion layer; the operator can also adjust the temperature of the workpiece by adjusting the number and the opening and closing of the second anode units, so as to further improve the non-uniformity of the temperature of the workpiece;
3. through set up thermal-insulated vacuum layer between casing and anodal switch-on spare, improve the temperature non-uniformity in nitriding process, also reduced the energy consumption that the thermal radiation caused when glow radiation and heating work piece, under the dual function of cold water circulation spare and vacuum insulating layer, reduce the heat loss, reduce the energy consumption, improve the temperature non-uniformity of nitriding process.
Drawings
FIG. 1 is a schematic view showing the overall structure of embodiment 1 of the present application;
FIG. 2 is a cross-sectional view of embodiment 1 of the present application;
FIG. 3 is a cross-sectional view of embodiment 2 of the present application;
FIG. 4 is a cross-sectional view of embodiment 3 of the present application;
FIG. 5 is a cross-sectional view of embodiment 4 of the present application;
FIG. 6 is a schematic diagram of an electric field assisting component according to embodiment 4 of the present application;
FIG. 7 is an enlarged view of portion A of FIG. 6 in accordance with the present application;
FIG. 8 is a schematic diagram of the electric field assisting component according to embodiment 5 of the present application;
reference numerals: 1. a base; 2. a direct current power supply; 3. a positive electrode connecting member; 4. a cathode tray; 5. a cold water circulation member; 6. an ammonia gas delivery member; 7. a vacuum pumping member; 8. a housing; 9. a water inlet pipe; 10. a water outlet pipe; 11. a high temperature resistant gasket; 12. an ammonia bottle; 13. an ammonia pressure gauge; 14. a control valve; 15. a drying box; 16. a flow meter; 17. a gas pipe; 18. a second vacuum bell; 19. a heat-insulating vacuum layer; 20. a vacuum pump; 21. an electromagnetic valve; 22. an exhaust pipe; 23. a vacuum valve; 24. a heat insulating pipe; 25. butterfly valve; 26. an observation window; 27. a first vacuum bell; 28. a first anode unit; 29. an electric field auxiliary assembly; 30. a rotating ring; 31. a driving member; 32. an arc-shaped rod; 33. a second anode unit; 34. a mounting groove; 35. a motor slot; 36. a motor housing; 37. a driving motor; 38. a connecting gear; 39. face gears; 40. a rotating member; 41. a protective housing; 42. connecting with a motor; 43. a worm; 44. a worm wheel; 45. an infrared locator.
Detailed Description
The application is described in further detail below with reference to fig. 1-8.
Example 1
The embodiment of the application discloses an ion nitriding furnace. Referring to fig. 1 and 2, an ion nitriding furnace comprises a base 1, a direct current power supply 2, a positive electrode connecting piece 3 and a cathode tray 4, wherein the direct current power supply 2 is arranged on one side of the base 1, the lower end of the positive electrode connecting piece 3 is in butt joint with the base 1 and is sealed, the cathode tray 4 is arranged on the upper surface of the base 1, a metal workpiece to be nitrided is arranged on the cathode tray 4, a cold water circulating piece 5 is fixed on the outer side of the positive electrode connecting piece 3, an ammonia gas conveying piece 6 is arranged on one side of the positive electrode connecting piece 3, the ammonia gas conveying piece 6 is used for conveying ammonia gas into the positive electrode connecting piece 3, and one side of the positive electrode connecting piece 3 is also communicated with a vacuumizing piece 7; the positive pole of the direct current power supply 2 is electrically connected with the positive pole connecting piece 3, and the negative pole of the direct current power supply 2 is electrically connected with the circle center of the cathode tray 4.
Referring to fig. 2, the cold water circulation part 5 comprises a shell 8, a water inlet pipe 9, a water outlet pipe 10 and a high temperature resistant sealing gasket 11, wherein the shell 8 is welded on the outer side of the positive electrode connection part 3, the lower end of the shell 8 is in butt joint with the base 1 and is in sealing arrangement, the interior of the shell 8 is hollow, the shell wall of the shell 8 is also hollow, the lower end of the shell 8 is communicated with the water inlet pipe 9, the upper end of the shell 8 is communicated with the water outlet pipe 10, and circulating water is introduced into the shell 8, so that a cooling water layer is formed, and a nitrided workpiece is easy to cool; according to the application, the high-temperature-resistant sealing gasket 11 can be fixed at the lower end of the shell 8, and the high-temperature-resistant sealing gasket 11 can be a fluorine rubber sealing piece, so that the high-temperature-resistant sealing gasket 11 is abutted against and fixed with the lower end of the shell 8, the sealing performance is improved, and the possibility of ageing deformation of the high-temperature-resistant sealing gasket 11 due to overhigh temperature in the nitriding process is reduced.
Referring to fig. 1, the ammonia gas delivery member 6 includes an ammonia bottle 12, an ammonia pressure gauge 13, a control valve 14, a drying oven 15, a flow meter 16, and a gas pipe 17, wherein the ammonia pressure gauge 13 is disposed on the ammonia bottle 12, the gas outlet end of the ammonia bottle 12 is communicated with the control valve 14, the gas outlet end of the control valve 14 is communicated with the drying oven 15, the gas outlet of the drying oven 15 is communicated with the flow meter 16, one end of the flow meter 16 is communicated with the drying oven 15, the other end of the flow meter 16 is communicated with the gas pipe 17, and the gas pipe 17 is communicated with the positive electrode connection member 3 and is used for delivering ammonia gas into the positive electrode connection member 3. The ammonia gas is sent out through an ammonia bottle 12, and finally delivered into the positive electrode connecting piece 3 through an ammonia pressure gauge 13, a control valve 14, a drying box 15, a flow meter 16 and a gas pipe 17.
Referring to fig. 2, the positive electrode connecting member 3 in the present application is a second vacuum bell 18, the second vacuum bell is a conductive metal shell, a heat-resistant alloy steel material can be adopted, the outer side of the second vacuum bell 18 is welded with the shell 8 of the cold water circulating member 5, the lower end of the second vacuum bell 18 is abutted against and sealed with the upper surface of the base 1, the whole second vacuum bell 18 is cylindrical, the second vacuum bell 18 is electrically connected with the positive electrode of the direct current power supply 2, the cathode tray 4 is positioned in the second vacuum bell 18, the cathode tray 4 is positioned at the lower end of the second vacuum bell 18, the cathode tray 4 is disc-shaped, and the center of the cathode tray 4 is intersected with the axis of the second vacuum bell 18.
Referring to fig. 2, since the positive electrode lead 3 is sealed with the base 1 and the case 8 is sealed with the base 1, a heat insulating vacuum layer 19 is formed between the positive electrode lead 3 and the case 8. By providing the insulating vacuum layer 19 and the cold water circulation member 5, the possibility that the second vacuum bell jar 18 directly contacts the cold water circulation member 5 to cause excessive heat loss is reduced, and the energy consumption is reduced.
Referring to fig. 1, the vacuumizing piece 7 comprises a vacuum pump 20, a solenoid valve 21, an air suction pipe 22, a vacuum valve 23, a heat insulation pipe 24 and a butterfly valve 25, wherein the vacuum pump 20 is arranged on one side of the base 1, the solenoid valve 21 is arranged on the vacuum pump 20 and is divided into two paths at an air outlet, one path is communicated with the air suction pipe 22, the vacuum valve 23 is arranged on the air suction pipe 22 and is used for controlling the opening and closing of the air suction pipe 22, the other path is communicated with the heat insulation pipe 24, and the butterfly valve 25 is arranged on the heat insulation pipe 24 and is used for controlling the opening and closing of the heat insulation pipe 24; the electromagnetic valve 21 is used for controlling the opening and closing of the vacuum pump 20, the exhaust pipe 22 penetrates through the heat-insulating vacuum layer 19 and stretches into the second vacuum bell jar 18 and is used for vacuumizing the second vacuum bell jar 18, and the heat-insulating pipe 24 stretches into the heat-insulating vacuum layer 19 and is used for vacuumizing the heat-insulating vacuum layer 19.
Referring to fig. 1 and 2, the side wall of the second vacuum bell jar 18 of the present application is provided with an observation window 26, one end of the observation window 26 is communicated with the second vacuum bell jar 18, and the other end is communicated with the housing 8, so that an operator can observe the occurrence time of glow through the observation window 26, thereby being convenient for adjusting the voltage of the dc power supply 2.
Referring to fig. 1, the dc power supply 2 of the present application may be selected as a high-frequency dc power supply, which has the advantages of simple wiring, small volume, and light weight; the direct current power supply 2 can also be a pulse power supply, such as a unidirectional pulse power supply, and has the advantages of automatic arc extinction, avoiding the transition from glow discharge to arc discharge, and if the arc discharge occurs, the unidirectional pulse power supply can immediately and automatically cut off the power supply, extinguish the arc, and simultaneously automatically ignite glow so as to continue the nitriding process.
The implementation principle of the ion nitriding furnace provided by the embodiment of the application is as follows: when the ion nitriding operation is carried out, the second vacuum bell jar 18 is firstly moved upwards, the metal workpiece is placed on the cathode tray 4, the second vacuum bell jar 18 is covered, the vacuumizing piece 7 is used for vacuumizing until the vacuum in the furnace reaches 1.33Pa, the ammonia permeation atmosphere is carried out through the ammonia conveying piece 6 until the air pressure reaches 66Pa, the direct current power supply 2 is connected, the direct current voltage is applied between the cathode and the anode until glow appears on the workpiece in the furnace, then the voltage is increased, the surface of the workpiece is gradually covered by the glow until all the surface of the cathode is completely covered by the glow, the voltage of the two stages is further increased to 700V, the glow brightness is gradually increased, the temperature of the workpiece is increased until the required heating temperature is reached, for example, when the metal workpiece is 304 stainless steel, the heating temperature is 450 ℃, the normal nitriding process is started until the heat preservation stage is finished, the power supply is cut off, and the nitriding is finished.
Example 2
Example 2 differs from example 1 in that: referring to fig. 3, the positive electrode connecting member 3 of the present embodiment includes a first vacuum bell 27 and a plurality of first anode units 28, where the first vacuum bell 27 is made of a high temperature resistant insulating material, and a mica plate or a quartz plate may be selected, so that the possibility of mutual serial connection between the first anode units 28 is reduced, the lower end of the first vacuum bell 27 is abutted against and sealed with the base 1, the inside of the first vacuum bell 27 in the present embodiment is hollow, the whole first vacuum bell 27 is also cylindrical, the first vacuum bell 27 is disposed along the vertical direction, the plurality of first anode units 28 are uniformly distributed on the surface of the first vacuum bell 27, and the first anode units 28 are fixed and sealed with the first vacuum bell 27, so that the possibility of leakage of ammonia gas from the gap between the first anode units 28 and the first vacuum bell 27 is reduced.
Referring to fig. 3, in this embodiment, the first anode unit 28 is electrically connected to the positive electrode of the dc power supply 2, the first anode unit 28 is made of conductive metal, the first anode unit 28 may be made of copper or iron, and one end of the first anode unit 28 extends into the first vacuum bell jar 27. In the present application, the direction of the electric field between the first anode unit 28 and the cathode tray 4 on the first vacuum bell 27 is directed from the first anode unit 28 toward the metal work. The first anode units 28 positioned at different positions on the first vacuum bell jar 27 can be controlled to be opened and closed with the direct current power supply 2, so that a controllable and movable electric field is formed in the first vacuum bell jar 27, and nitriding treatment is conveniently carried out on the thinner part of the workpiece permeable layer.
Referring to fig. 3, since the first anode units 28 of the present application are all connected to the positive electrode of the dc power supply 2, the negative electrode of the dc power supply 2 is connected to the cathode tray 4, that is, a plurality of first anode units 28 are arranged in parallel, that is, the voltages between the first anode units 28 and the cathode tray 4 are equal, so that the operator can easily perform nitriding treatment.
Referring to fig. 1 and 3, one or more dc power sources 2 may be provided in the present embodiment, and when a larger load can be carried by using the dc power sources 2, the nitriding requirement can be satisfied by using only one dc power source 2; when the load of the first anode units 28 is large, the number of the first anode units 28 is large, and one direct current power supply 2 cannot meet the actual demand, a plurality of direct current power supplies 2 can be arranged, and the positive electrode of each direct current power supply 2 at the moment is electrically connected with a programmable switch, and one programmable switch can be electrically connected with a single or a plurality of first anode units 28; through the electric connection of the direct current power supply 2 and the first anode unit 28, namely, through controlling the opening and closing of the first anode unit 28 and the direct current power supply 2 at different positions, the positions of the electric field direction and the nitriding direction are further adjusted, and the problem of uneven diffusion layer in the nitriding process is easily solved.
The implementation principle of the ion nitriding furnace provided by the embodiment of the application is as follows: when nitriding the metal workpiece, an operator can firstly connect a part of the first anode units 28 with the positive electrode of the direct current power supply 2 to carry out nitriding treatment on the metal workpiece, after a period of treatment, the operator can close the part of the first anode units 28 and control the connection of the other parts of the first anode units 28 with the direct current power supply 2, and the direction of an electric field is changed by controlling the opening and closing of the first anode units 28 at different positions and the direct current power supply 2, so that the position of a diffusion layer and the thickness of the diffusion layer are further changed, and at the moment, the operator can carry out nitriding treatment on the metal workpiece by controlling the direction of the electric field towards different positions of the metal workpiece, so that the problem of thinner diffusion layer at the abnormal position of the abnormal workpiece is solved.
Example 3
Embodiment 3 is different from embodiment 2 in that, referring to fig. 1 and 4, the first vacuum bell 27 of the present embodiment is a hemispherical shell 8, the lower end of the first vacuum bell 27 abuts against the base 1, a plurality of first anode units 28 are uniformly fixed on the surface of the shell 8 of the first vacuum bell 27, and one end of the first anode units 28 extends into the first vacuum bell 27. In the application, the center of the circle of the cathode tray 4 coincides with the center of the sphere of the first vacuum bell jar 27, and as the first vacuum bell jar 27 is a half-shell sphere, the positions from the first anode units 28 on the first vacuum bell jar 27 to the center of the circle of the cathode tray 4 are nearly equal; at this time, the operator may electrically connect the cathode of the dc power supply 2 with the center of the cathode tray 4, and the anode of the dc power supply 2 with the plurality of first anode units 28. In the nitriding process, since the first anode units 28 connected with the positive electrode of the direct current power supply 2 are arranged in parallel, the voltages between the first anode units 28 connected with the positive electrode of the direct current power supply 2 and the cathode tray 4 are equal, the distances between the first anode units 28 and the cathode tray 4 at the moment are approximately equal, and the electric field intensity at each first anode unit 28 is approximately consistent, so that the possibility that the electric field intensity between the first anode units 28 and the cathode tray 4 at different positions is inconsistent to influence the nitriding effect is reduced.
The implementation principle of the ion nitriding furnace provided by the embodiment of the application is as follows: according to u=ed, since the first vacuum bell 27 is the hemispherical shell 8, that is, the distances from the plurality of first anode units 28 to the cathode tray 4 are equal, and since the first anode units 28 are connected with the positive electrode of the dc power supply 2 and the cathode tray 4 is connected with the negative electrode of the dc power supply 2, in the nitriding process, the voltage between the first anode units 28 and the cathode tray 4 can be adjusted to be consistent, so that the electric field intensity generated between each first anode unit 28 and the cathode tray 4 is further made to be approximately equal, the possibility of affecting the electric field intensity due to the difference of the distances between the first anode units 28 and the cathode tray 4 is reduced, and the uniformity of the diffusion layer during nitriding is further improved.
Example 4
Example 4 differs from example 3 in that: referring to fig. 4 and 5, an electric field auxiliary assembly 29 is further provided on the base 1, the electric field auxiliary assembly 29 includes a rotating ring 30, a driving member 31, an arc-shaped rod 32, and a plurality of second anode units 33, a mounting groove 34 is provided on the upper surface of the base 1, the mounting groove 34 is annular, the rotating ring 30 is rotatably connected in the mounting groove 34, a motor groove 35 is provided in the base 1, the motor groove 35 is communicated with the mounting groove 34, and the driving member 31 is fixedly connected in the motor groove 35.
Referring to fig. 5, the driving member 31 includes a motor housing 36, a driving motor 37, a connection gear 38, and a face gear 39, where the motor housing 36 may be made of a high temperature resistant insulating material, such as a mica board, the driving motor 37 is fixedly connected in the motor housing 36 by a bolt, an output shaft of the driving motor 37 is disposed in a horizontal direction, the output shaft of the driving motor 37 passes through the motor housing 36 and is in interference fit with the connection gear 38, the face gear 39 is welded to a lower end of the rotating ring 30, an axis of the face gear 39 is disposed in a vertical direction, the connection gear 38 and the face gear 39 may be bevel gears, and the connection gear 38 is meshed with the face gear 39. When the output shaft of the drive motor 37 rotates, the connecting gear 38 is driven to synchronously rotate, and the face gear 39 and the rotary ring 30 are synchronously rotated by the engagement of the connecting gear 38 and the face gear 39.
Referring to fig. 6 and 7, the electric field auxiliary assembly 29 further includes a rotating member 40 fixedly connected to the upper surface of the rotating ring 30, the rotating member 40 includes a protective housing 41, a connection motor 42, a worm 43, and a worm wheel 44, the protective housing 41 is fixed on the side wall of the rotating ring 30, the protective housing 41 is also made of a high temperature resistant insulating material, such as mica boards, the connection motor 42 is fixed in the protective housing 41, an output shaft of the connection motor 42 is disposed along a vertical direction, an output shaft of the connection motor 42 is welded with the worm 43, the worm wheel 44 is rotatably connected to the side wall of the protective housing 41 through a rotation shaft, an axis of the worm wheel 44 is provided with an arc rod 32 along a horizontal direction and is welded with the worm wheel 44 through a rotation shaft, and the worm 43 is meshed with the worm wheel 44. When the output shaft of the connection motor 42 rotates, the worm 43 is driven to synchronously rotate, and the worm wheel 44 and the arc-shaped rod 32 rotate through the engagement of the worm 43 and the worm wheel 44.
Referring to fig. 6, a plurality of second anode units 33 are uniformly disposed on the side wall of the arc-shaped rod 32, the second anode units 33 are also made of metal materials with good conductivity, such as iron, copper, etc., the rotating rod and the arc-shaped rod 32 are made of high-temperature resistant insulating materials, and can be made by laminating mica sheets; the arc rod 32 is in a semicircular arc shape, the center of the arc rod 32 is located at the center of the cathode tray 4, the second anode units 33 are fixed on the surface of the arc rod 32, that is, the distances from each second anode unit 33 to the center of the cathode tray 4 are equal, an operator can enable the second anode units 33 to be connected with the positive electrode of the direct current power supply 2, in the nitriding process, the voltage between each second anode unit 33 and the cathode tray 4 is kept consistent by adjusting the voltage between each second anode unit 33 and the cathode tray 4, and the distances between the second anode units 33 and the cathode tray 4 in the furnace are approximately equal at the moment, that is, the electric field strength generated between the plurality of second anode units 33 and the cathode tray 4 is approximately consistent, and the formed electric field direction faces the weak part of the seepage layer of the metal workpiece.
Referring to fig. 6, the electric field assisting member 29 employed in the present application may also be installed in the ion nitriding furnace of embodiment 1, embodiment 2 or the conventional ion nitriding furnace.
The implementation principle of the ion nitriding furnace provided by the embodiment of the application is as follows: in this embodiment, while an electric field is formed between the positive electrode connecting member 3 and the cathode tray 4, an auxiliary electric field is formed between the second anode unit 33 and the cathode tray 4, so that the electric field formed between the positive electrode connecting member 3 and the cathode tray 4 performs nitriding treatment on the whole metal workpiece, and meanwhile, the electric field between the second anode unit 33 and the cathode tray 4 performs strengthening treatment on the thin portion of the formed diffusion layer, and meanwhile, in this embodiment, the strength of the electric field between the adopted plurality of first anode units 28 and the cathode tray 4 is consistent, the strength of the electric field formed between the second anode unit 33 and the cathode tray 4 is consistent, so that the electric field stability in the nitriding furnace is further improved, and the nitriding effect is better.
Example 5
Example 5 differs from example 4 in that: referring to fig. 8, the electric field auxiliary assembly 29 further includes an infrared positioner 45, the infrared positioner 45 is detachably connected with the arc-shaped rod 32, and the application adopts a threaded connection mode to realize the detachable connection, and when the infrared positioner 45 is installed, the infrared direction of the installed infrared positioner 45 is kept consistent with the electric field direction of the second anode unit 33 towards the cathode tray 4 by adjusting the angle of the installed infrared positioner 45.
The implementation principle of the ion nitriding furnace provided by the embodiment of the application is as follows: before the operator starts the nitriding furnace to perform nitriding treatment, the operator can firstly install the infrared positioner 45 on the arc-shaped rod 32, the infrared direction of the infrared positioner 45 is kept the same as the electric field direction between the second anode unit 33 and the cathode tray 4, so that the electric field direction of the electric field auxiliary assembly 29 is visualized, at this time, the operator controls the rotation of the driving motor 37 and the connecting motor 42, so that the stroke of the arc-shaped rod 32 and the rotating ring 30 is controlled, the formed thin position of the permeable layer is primarily judged through the shape of the metal workpiece, then the infrared light of the infrared positioner 45 moves to the weak position of the permeable layer, then the operator takes out the infrared positioner 45, and in the nitriding treatment process of the metal workpiece, the control motor and the connecting motor 42 repeat the movement stroke, so that the nitriding treatment is synchronously performed on the weak position of the permeable layer of the workpiece in the nitriding process.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (10)
1. The utility model provides an ion nitriding furnace, includes base (1), DC power supply (2), anodal switch-on piece (3), negative pole tray (4) fixed connection in base (1) upper surface, the lower extreme of anodal switch-on piece (3) with base (1) butt and seal, negative pole tray (4) set up in the upper end of base (1) and be used for placing the metal work piece, the outside fixedly connected with cold water circulation piece (5) of anodal switch-on piece (3), one side of anodal switch-on piece (3) is provided with ammonia conveyer (6), base (1) department intercommunication has evacuation spare (7), its characterized in that: the positive electrode connecting piece (3) is electrically connected with the positive electrode of the direct current power supply (2), and the cathode tray (4) is electrically connected with the negative electrode of the direct current power supply (2).
2. An ion nitriding furnace as set forth in claim 1, wherein: the positive pole switch-on piece (3) includes first vacuum bell jar (27), a plurality of first positive pole unit (28), first vacuum bell jar (27) are high temperature resistant insulating material, the lower extreme of first vacuum bell jar (27) with base (1) butt and seal, a plurality of first positive pole unit (28) fixed distribution in the surface of first vacuum bell jar (27), first positive pole unit (28) with the anodal electricity of DC power supply (2) is connected, through control different positions first positive pole unit (28) with opening and close between DC power supply (2) form controllable electric field in first vacuum bell jar (27).
3. An ion nitriding furnace as set forth in claim 1, wherein: the positive electrode connecting piece (3) comprises a second vacuum bell jar (18), the second vacuum bell jar (18) is a conductive metal shell, the lower end of the second vacuum bell jar (18) is abutted to the base (1) and sealed, and the second vacuum bell jar is electrically connected with the positive electrode of the direct current power supply (2).
4. An ion nitriding furnace according to any one of claims 2 or 3, wherein: the direct current power supply (2) is a high-frequency direct current power supply or a pulse power supply.
5. An ion nitriding furnace according to claim 4, wherein: the direct current power supply (2) is provided with one or more than one, the positive electrode of the direct current power supply (2) is electrically connected with a programmable switch, the programmable switch is electrically connected with the first anode unit (28) and one programmable switch is used for controlling the opening and closing of a single or a plurality of the first anode units (28) and the direct current power supply (2).
6. An ion nitriding furnace according to any one of claims 2 or 3, wherein: the electric field auxiliary assembly (29) is further arranged on the base (1), the electric field auxiliary assembly (29) comprises a rotating ring (30), a driving piece (31), an arc-shaped rod (32) and a plurality of second anode units (33), the rotating ring (30) is rotationally connected to the upper surface of the base (1), the driving piece (31) is fixedly connected to the base (1) and is used for driving the rotating ring (30) to rotate, the arc-shaped rod (32) is arranged on the upper surface of the rotating ring (30), the plurality of second anode units (33) are uniformly fixed on the surface of the arc-shaped rod (32), the distances from the plurality of second anode units (33) to the center of the cathode tray (4) are equal, the voltages between the second anode units (33) and the cathode tray (4) are equal, and the electric field direction formed by the second anode units (33) and the cathode tray (4) is thinner towards the metal workpiece layer.
7. An ion nitriding furnace according to claim 6, wherein: the driving piece (31) comprises a driving motor (37), a connecting gear (38) and a face gear (39), wherein the driving motor (37) is fixedly connected with the base (1), the output shaft of the driving motor (37) is fixedly connected with the connecting gear (38), the lower end of the rotating ring (30) is fixedly connected with the face gear (39), and the face gear (39) is meshed with the connecting gear (38).
8. An ion nitriding furnace according to claim 7, wherein: the electric field auxiliary assembly (29) further comprises a rotating piece (40) arranged on the rotating ring (30), the rotating piece (40) comprises a connecting motor (42), a worm (43) and a worm wheel (44), an output shaft of the connecting motor (42) is fixedly connected with the worm (43), the worm wheel (44) is rotationally connected with the arc-shaped rod (32), and the worm wheel (44) is meshed with the worm (43).
9. An ion nitriding furnace according to claim 8, wherein: the electric field auxiliary assembly (29) further comprises an infrared positioner (45), the infrared positioner (45) is detachably connected with the arc-shaped rod (32), and the infrared direction of the infrared positioner (45) is the same as the electric field direction of the second anode unit (33) facing the cathode tray (4).
10. An ion nitriding furnace as set forth in claim 1, wherein: the cold water circulation piece (5) comprises a shell (8), a water inlet pipe (9) and a water outlet pipe (10), wherein the shell (8) is fixedly connected to the outer side of the positive electrode connection piece (3), the positive electrode connection piece (3) is fixedly connected to the shell (8), the shell of the shell (8) is in a hollow structure, the lower end of the shell (8) is communicated with the water inlet pipe (9), the upper end of the shell (8) is communicated with the water outlet pipe (10), the shell (8) is in sealing arrangement with the base (1), a heat insulation vacuum layer (19) is formed between the shell (8) and the positive electrode connection piece (3), and the vacuumizing piece (7) stretches into the heat insulation vacuum layer (19) and the positive electrode connection piece (3) and is used for vacuumizing the same.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310822267.8A CN116815111A (en) | 2023-07-05 | 2023-07-05 | Ion nitriding furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310822267.8A CN116815111A (en) | 2023-07-05 | 2023-07-05 | Ion nitriding furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116815111A true CN116815111A (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310822267.8A Withdrawn CN116815111A (en) | 2023-07-05 | 2023-07-05 | Ion nitriding furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116815111A (en) |
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2023
- 2023-07-05 CN CN202310822267.8A patent/CN116815111A/en not_active Withdrawn
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Application publication date: 20230929 |