CN203754794U - Cathode rotating nitriding furnace - Google Patents
Cathode rotating nitriding furnace Download PDFInfo
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- CN203754794U CN203754794U CN201420009341.0U CN201420009341U CN203754794U CN 203754794 U CN203754794 U CN 203754794U CN 201420009341 U CN201420009341 U CN 201420009341U CN 203754794 U CN203754794 U CN 203754794U
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- nitriding
- cathode
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Abstract
The utility model discloses a cathode rotating nitriding furnace. The nitriding furnace comprises a furnace body, a base, a circulating water system, an electrode system, a cathode rotating system and an ammonia feeding and discharging system, wherein the furnace body is cylindrical; a semispherical head is arranged at the top of the furnace body; a water liner interlayer is arranged in the furnace body; a plurality of idler wheels are arranged below the outer side of a cathode plate and are matched with the size of a slideway of the base; the base is provided with the circular slideway; the base and the cathode plate are connected with a motor below the base via an axle base; the cathode plate and parts can carry out rotary motion along the circular orbit; the base is stationary; the furnace body and the base form a nitriding zone; an ammonia inlet, exhaust ports, cold water outlets and hanging rings are formed in the top of the furnace; sensors are arranged in the middle of the furnace body; a plurality of cathode frames are arranged on the cathode plate. The cathode rotating nitriding furnace has the beneficial effects that the cathode rotating nitriding furnace has uniform internal temperature, good nitriding effects and uniform nitriding layer; the properties such as hardness, wear resistance and the like of the surfaces of the nitriding parts meet the requirements.
Description
Technical field
The utility model relates to a kind of metallic element heat treatment technics and apparatus field, is specifically related to a kind of metal surface nitriding equipment, particularly a kind of cathode rotary nitriding furnace.
Background technology
Nitriding treatment can significantly improve hardness, wear resistance, seizure resistance, corrosion resistance and the anti-fatigue performance of metallic element and die surface.Because nitriding temperature is lower, generally within the scope of 500-650 DEG C, to carry out, when nitriding, part or mold core do not undergo phase transition, and therefore mould nitriding after strain is less; Facts have proved, via nitride part after treatment or die life significantly improve, and therefore nitriding treatment is used widely aborning.
Nitriding is divided into common nitriding and ionitriding, ionitriding be fill using in the rough vacuum body of heater of nitrogenous gas metal works as negative electrode, body of heater is anode, and the nitrogen hydrogen atom after energising in medium is ionized after the match at high voltage direct current, forms plasma zone between anode and cathode.Under the effect of plasma zone highfield, the positive ion of nitrogen and hydrogen is to bombard to workpiece surface at a high speed; The kinetic energy of ion changes heat energy into, and heated parts surface is to temperature required.Due to the bombardment of ion, workpiece surface produces atom sputtering, thereby is purified, and due to absorption and diffusion, nitrogen infiltrates workpiece surface then simultaneously.Compared with common nitriding, ionitriding can be shortened nitriding cycle, save energy.And the problem that existing ion nitriding furnace exists is: in nitriding furnace, the temperature difference is large, metal parts or Step for Die & Mold Nitridation effect are inhomogeneous, two ends nitrogenize quality is lower than centre, outer ring nitrogenize quality is lower than inner lane, nitrogenize quality differs greatly, for high precision component or mould, the inhomogeneous meeting of nitrogenize greatly reduces the work-ing life of component or mould.For addressing this problem, the past mostly improves holding temperature and compensates, but result is unsatisfactory, and is prone to distortion, expansion.
Patent No. CN1789477A discloses a kind of energy-saving ion nitrifying furnace, body of heater is provided with heat protection screen and outer cooling cowl, heat protection screen is the sealed, thermally insulated thermal insulation layer of double-layer stainless steel, furnace hearth plate is provided with furnace bottom thermoscreen, nitriding gas enters pipeline along heat protection screen outside, enters the gas dispersion ring in body of heater by heat protection screen top.Patent No. CN202265601U discloses a kind of vacuum nitriding furnace, formed by body of heater, base and cathode disc, body of heater is movably arranged on base, cathode disc is equipped with in the centre of base, on the base of cathode disc below, be provided with vacuum extractor, in body of heater, be provided with thermoscreen, bottom of furnace body is respectively arranged with ammonia import and refrigeration cycle water out, and body of heater lower end is provided with refrigeration cycle water inlet.Above-mentioned patent has improved heat insulation effect to a certain extent, has strengthened the compensation effect of holding temperature, but does not fundamentally solve the problem that the nitriding furnace nitrogenize temperature difference is large, nitriding result is uneven.
Utility model content
For solving the problems of the technologies described above, the utility model provides a kind of cathode rotary nitriding furnace, in nitridation process, the defect that component or mold surface temperature are inhomogeneous, nitriding result is inhomogeneous, rotary nitriding furnace structure reasonable in design, the negative electrode of rotation is spatially provided, will produce like this electric field of rotation, the component of nitriding or mould also can be together along with rotations, therefore make temperature and electric field distribution homogenization in nitriding furnace, thereby guarantee the processing requirement of nitridation process, reach all uniform targets of even nitriding result of temperature.
For achieving the above object, the technical solution of the utility model is as follows: a kind of cathode rotary nitriding furnace, comprise body of heater, suspension ring, cooling water outlet, water courage interlayer, cathode carrier, nitriding district, anode connection, cold water inlet, recycle pump, roller, cathode connection, motor, ammonia import, sensor, pedestal, pillar stiffener, slideway, protecting pipe, gas distribution pipe, negative plate and venting port, it is characterized in that:
Described cathode rotary nitriding furnace design body of heater is round shape, and top is hemispherical end socket; Bottom fastens and is integrated with pedestal; In described body of heater, be provided with water courage interlayer; Described body of heater top is provided with ammonia import, venting port; Described venting port periphery is provided with three suspension ring and three cooling water outlets, is evenly provided with three sensors, for measuring the temperature of three directions in body of heater in body of heater side; Described body of heater middle part is provided with anode connection, and described bottom of furnace body is provided with cold water inlet.
Described negative plate below is provided with multiple rollers and mates with base size, is provided with cirque slideway on pedestal; Under the motor driving outside of described negative plate, can rotate along annular slide track; Its traffic direction is two-way controlled, and speed of rotation can regulate; Described pedestal maintains static; Described negative plate is communicated with cathode connection by coaxial manner;
Described negative plate top is provided with at least cathode carrier of one deck annular spread, layer from inside to outside, and cathode carrier quantity increases, and cathode carrier annular is uniformly distributed; Described cathode carrier is connected by bayonet socket with negative plate; Under motor below negative plate is being arranged at pedestal drives, while rotatablely moving, cathode carrier and treat that nitriding component also together follow rotation, will in body of heater, produce like this temperature and the electric field of homogenization, make in nitriding process, surface temperature and the surface electric field distribution of component are more even, thereby obtain high-quality nitrided case.
Described body of heater and pedestal form nitriding district, and negative plate, cathode carrier, ammonia import, gas distribution pipe, sensor and venting port are set in described nitriding district; Negative plate is connected with base via shaft seat, and described pedestal below is provided with motor driving shaft seat and drives negative plate together to rotate; Described negative plate central position is to extend from furnace roof portion the ammonia gas distribution pipe getting off, and the nitrogen through preheating, by four gas distribution pipes, is uniformly distributed on negative plate; Described venting port upper end is horizontally disposed with the exhaust branch pipe that hexagonal direction distributes.
Below, described negative plate outside is provided with many rollers, and on described pedestal, relative position is provided with slideway, the Orbit Matching of described negative plate roller and described pedestal, under drive-motor drives, negative plate can rotate in the track of pedestal, and its speed of rotation is adjustable, and sense of rotation is controlled; In plasma discharge nitriding process, negative plate and component rotate, temperature and the electric field in Shi Lunei nitriding district change along with the rotation of negative plate, thereby improve temperature homogeneity in nitriding region and the homogeneity of electric field change, improve the nitriding effect of component or mould.
Cooling recirculation system is made up of water coolant courage interlayer, recycle pump, cooling tower, cold water inlet and cooling water outlet; Cooling water source is implemented cooling from cold water inlet enters the water courage interlayer of body of heater, after water courage interlayer, flows out from the cooling water outlet at body of heater top, and described cold water inlet is provided with speed that throttling valve can regulate and control water coolant guarantees the cooling performance of body of heater water courage interlayer; Import to cooling tower through cooling water outlet and form cooling water recirculation system; Described circulating water system can be according to actual process requirement, and speed or the flow of regulation and control recirculated water, to adapt to the requirement of nitriding different technology conditions.
Described ammonia import is arranged on body of heater top, and extend to negative plate surface, be provided with the even horizontal distribution of multiple ammonia gas distribution pipes, ammonia enters behind nitriding district, under gas distribution pipe distributes, be evenly distributed in nitriding region, the waste gas producing in nitriding process and unnecessary gas, pump out body of heater from the multiple venting ports that are arranged at upper of furnace body.
In the furnace chamber of described cathode rotary nitriding furnace, certain vacuum tightness will be kept, the vacuum pump connecting by vapor pipe before nitrogenize is to vacuumizing in furnace chamber, the source of the gas that passes into ion nitriding by ammonia import is again ammonia, ammonia passes into the abundant reaction that is conducive to ammonia from cathode surface, and carry out iontophoretic injection effect with treating nitriding component, also guarantee to reduce the gas pumping out and contain excessive ammonia, very large pollution is caused in workshop, have a strong impact on worker healthy.
The cathode carrier arranging on described negative plate, add man-hour hanging or device is treated nitriding component or mould for nitriding, its structure and shape can have multiple, cathode carrier is connected by snap fit with negative plate, difform cathode carrier has identical clamping interface, can change at any time different cathode carrier according to processing requirement.
Described body of heater side is evenly provided with three temperature sensors; its outside is protected with protecting pipe; sensor is deep into furnace chamber nitriding zone center position; in three directions, detect in real time the temperature variation data in stove; the anterior central region for the treatment of nitriding component that is placed in of probe; effectively monitoring workpiece bulk temperature parameter, is convenient to adjust and controls.
When the operation of cathode rotary nitriding furnace, pass into after ammonia, accelerated charged ion collides the molecule of nitrogenous gas, make its ionization and decompose to produce the required nitrogen element of nitrogenize, in glow discharge, constantly produce new charged particle, electronegative electronics anode motion, positively charged nitrogen ion and hydrogen ion are to cathode motion, high-speed motion also clashes into cathode-workpiece surface, produces heat, and workpiece is heated to needed nitriding temperature; Under drive-motor drives, negative plate and component rotate with certain speed along circular orbit, Shi Lunei nitriding district also rotates variation thereupon, cause thermograde region and the also variation thereupon of electric-force gradient region in stove, thereby make in whole nitriding process, the temperature in stove and electric field in even mix change among, aura layer forms along the profile of workpiece, different component corner ribs all can obtain effectively, uniform nitriding processing treatment, makes its surface be subject to uniform nitrogenize.
Described nitriding district working temperature is≤650 DEG C;
The described effective working size in nitriding district is φ 600*800---1600*2000;
Described component surface amasss as 3m
2---20m
2;
Described ion nitriding rotary oven batch is 300kg---4000kg;
Described sensor accuracy is ± 1 DEG C.
Described body of heater adopts light-weight metal liner as anode, is evenly arranged in nitrogenize furnace body inside, to uniformity, isotropic anode electric field are provided, thereby guarantees the nitridation process effect of component or die surface.
Pass through technique scheme, the beneficial effect of technical solutions of the utility model is: by nitriding furnace cathode rotary, bulk temperature distribution and electric field distribution are on the turn, the electromagnetic field that acts on component surface distributes and also can change along with mobile, therefore, drive component or the mould of nitriding by rotary nitriding furnace negative plate, its surfaces nitrided quality is high, effective, nitrided case is even; Hardness, wear resistance, seizure resistance, corrosion resistance and the anti-fatigue performance of component or die surface all meet the requirements.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed a kind of cathode rotary nitriding furnace structural representation of the utility model embodiment;
Fig. 2 is the disclosed a kind of cathode rotary nitriding furnace negative plate schematic diagram of the utility model embodiment;
Fig. 3 is the disclosed a kind of cathode rotary nitriding furnace vertical view schematic diagram of the utility model embodiment.
Numeral and the represented corresponding component title of letter in figure:
1. body of heater 2. suspension ring 3. cooling water outlet 4. water courage interlayers
5. cathode carrier 6. nitriding district 7. anode connection 8. cold water inlets
9. recycle pump 10. roller 11. cathode connection 12. motors
13. ammonia import 14. sensor 15. pedestal 16. pillar stiffeners
17. slideway 18. protecting pipe 19. gas distribution pipe 20. negative plates
21. venting ports
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
According to Fig. 1, Fig. 2 and Fig. 3, the utility model provides a kind of cathode rotary nitriding furnace, comprise body of heater 1, suspension ring 2, cooling water outlet 3, water courage interlayer 4, cathode carrier 5, nitriding district 6, anode connection 7, cold water inlet 8, recycle pump 9, roller 10, cathode connection 11, motor 12, ammonia import 13, sensor 14, pedestal 15, pillar stiffener 16, slideway 17, protecting pipe 18, gas distribution pipe 19, negative plate 20 and venting port 21, it is characterized in that:
Described cathode rotary nitriding furnace design body of heater is round shape, and top is hemispherical end socket; Bottom fastens and is integrated with pedestal 15; In described body of heater, be provided with water courage interlayer 4; Described body of heater 1 top is provided with ammonia import 13, venting port 21; Described venting port 21 peripheries are provided with three suspension ring 2 and three cooling water outlets 3, are evenly provided with three sensors 14 in body of heater 1 side, for measuring the temperature of interior three directions of body of heater 1; Described body of heater 1 middle part is provided with anode connection 7, and described body of heater 1 bottom is provided with cold water inlet 8.
Described negative plate 20 belows be provided with multiple rollers 10 and with pedestal 15 size match, on pedestal 15, be provided with cirque slideway 17; Under motor 12 drivings outside of described negative plate 20, can rotate along annular slide track 17; Its traffic direction is two-way controlled, and speed of rotation can regulate; Described pedestal 15 maintains static; Described negative plate 20 is communicated with cathode connection 11 by coaxial manner.
Described negative plate 20 tops, preferred, be provided with the cathode carrier 5 that shellring shape distributes, layer from inside to outside, cathode carrier 5 quantity increase, preferred, and the quantity of described cathode carrier is respectively the six roots of sensation, 12 and 24; Cathode carrier 5 annulars are uniformly distributed; Described cathode carrier 5 is connected by bayonet socket with negative plate 20; Under motor below negative plate 20 is being arranged at pedestal 15 drives, while rotatablely moving, cathode carrier 5 and treat that nitriding component also together follow rotation, like this will be at temperature and the electric field of the interior generation homogenization of body of heater 1, make in nitriding process, surface temperature and the surface electric field distribution of component are more even, thereby obtain high-quality nitrided case.
Described body of heater 1 forms nitriding district 6, interior negative plate 20, cathode carrier 5, ammonia import 13, gas distribution pipe 19, sensor 14 and the venting port 21 of arranging in described nitriding district 6 with pedestal 15; Negative plate 20 is connected by axle bed with pedestal 15, and described pedestal 15 belows are provided with motor 12 and drive axle bed and drive negative plate 20 together to rotate; Described negative plate 20 central positions are to extend from furnace roof portion the ammonia gas distribution pipe 19 getting off, and the nitrogen through preheating, by four gas distribution pipes 19, is uniformly distributed on negative plate 20; Described venting port 21 upper ends are horizontally disposed with the exhaust branch pipe that hexagonal direction distributes.
Described negative plate 20 belows, outside are provided with many rollers 10, and preferred, described roller is set to six; On described pedestal 15, relative position is provided with slideway 17, the roller 10 of described negative plate 20 and slideway 17 size match of described pedestal 15, under drive-motor 12 drives, negative plate 20 can be in the interior rotation of the slideway of pedestal 15 17, its speed of rotation is adjustable, and sense of rotation is controlled; In plasma discharge nitriding process, negative plate 20 and component rotate, temperature and the electric field in Shi Lunei nitriding district 6 change along with the rotation of negative plate 20, thereby improve temperature homogeneity in 6 territories, nitriding district and the homogeneity of electric field change, improve the nitriding effect of component or mould.
Cooling recirculation system is made up of water coolant courage interlayer 4, recycle pump 9, cooling tower, cold water inlet 8 and cooling water outlet 3; Cooling water source is implemented cooling from cold water inlet 8 enters the water courage interlayer 4 of body of heater 1, after water courage interlayer 4, cooling water outlet 3 from body of heater 1 top flows out, and described cold water inlet 8 is provided with speed that throttling valve can regulate and control water coolant guarantees the cooling performance of body of heater water courage interlayer 4; Import to cooling tower through cooling water outlet 3 and form cooling water recirculation system; Described circulating water system can be according to actual process requirement, and speed or the flow of regulation and control recirculated water, to adapt to the requirement of nitriding different technology conditions.
Described ammonia import 13 is arranged on body of heater 1 top, and extends to negative plate 20 surfaces, is provided with the even horizontal distribution of multiple ammonia gas distribution pipes 19, and preferred, described ammonia gas distribution pipe 19 is set to four, evenly horizontally disposed.
Ammonia enters behind nitriding district 6, under gas distribution pipe 19 distributes, is evenly distributed in 6 territories, nitriding district, the waste gas producing in nitriding process and unnecessary gas, pump out body of heater from the multiple venting ports 21 that are arranged at body of heater 1 top, preferred, described venting port is provided with six, evenly horizontally disposed.
In the furnace chamber of described cathode rotary nitriding furnace, certain vacuum tightness will be kept, the vacuum pump connecting by venting port 21 before nitrogenize is to vacuumizing in furnace chamber, the source of the gas that passes into ion nitriding by ammonia import 13 is again ammonia, ammonia passes into the abundant reaction that is conducive to ammonia from cathode surface, and carry out iontophoretic injection effect with treating nitriding component, also guarantee to reduce the gas pumping out and contain excessive ammonia, very large pollution is caused in workshop, have a strong impact on worker healthy.
The cathode carrier 5 arranging on described negative plate 20, add man-hour hanging or device is treated nitriding component or mould for nitriding, its structure and shape can have multiple, cathode carrier 5 is connected by snap fit with negative plate, difform cathode carrier 5 has identical clamping interface, can change at any time different cathode carrier 5 according to processing requirement.
Described body of heater 1 side is evenly provided with three temperature sensors 14; its outside is protected with protecting pipe 18; sensor 14 is deep into 6 centres, furnace chamber nitriding district; in three directions, detect in real time the temperature variation data in stove; the anterior central region for the treatment of nitriding component that is placed in of probe; effectively monitoring workpiece bulk temperature parameter, is convenient to adjust and controls.
When the operation of cathode rotary nitriding furnace, pass into after ammonia, accelerated charged ion collides the molecule of nitrogenous gas, make its ionization and decompose to produce the required nitrogen element of nitrogenize, in glow discharge, constantly produce new charged particle, electronegative electronics anode motion, positively charged nitrogen ion and hydrogen ion are to cathode motion, high-speed motion also clashes into cathode-workpiece surface, produces heat, and workpiece is heated to needed nitriding temperature; Under drive-motor 12 drives, negative plate 20 rotates with certain speed along annular slide track with component, Shi Lunei nitriding district 6 also rotates variation thereupon, cause thermograde region and the also variation thereupon of electric-force gradient region in stove, thereby make in whole nitriding process, the temperature in stove and electric field in even mix change among, aura layer forms along the profile of workpiece, different component corner ribs all can obtain effectively, uniform nitriding processing treatment, makes its surface be subject to uniform nitrogenize.
Preferably, described nitriding district 6 working temperatures are≤650 DEG C;
Preferably, the described effective working size in nitriding district 6 is φ 1000*1600;
Preferably, described component surface amasss as 12m
2;
Preferably, described ion nitriding rotary oven batch is 2400kg;
Preferably, described sensor 14 precision are ± 1 DEG C.
Described body of heater 1 adopts light-weight metal liner as anode, is evenly arranged in nitrogenize furnace body inside, to uniformity, isotropic anode electric field are provided, thereby guarantees the nitridation process effect of component or die surface.
The utility model is by nitriding furnace cathode rotary, bulk temperature distribution and electric field distribution are on the turn, the electromagnetic field that acts on component surface distributes and also can change along with mobile, therefore, drive component or the mould of nitriding by rotary nitriding furnace negative plate, its surfaces nitrided quality is high, effective, and nitrided case is even; Hardness, wear resistance, seizure resistance, corrosion resistance and the anti-fatigue performance of component or die surface all meet the requirements.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (5)
1. a cathode rotary nitriding furnace, it is characterized in that, comprise body of heater, suspension ring, cooling water outlet, water courage interlayer, cathode carrier, nitriding district, anode connection, cold water inlet, recycle pump, roller, cathode connection, motor, ammonia import, sensor, pedestal, pillar stiffener, slideway, protecting pipe, gas distribution pipe, negative plate and venting port; Described cathode rotary nitriding furnace design body of heater is round shape, and top is hemispherical end socket, and bottom and pedestal fasten and be integrated; In described body of heater, be provided with water courage interlayer; Described body of heater top is provided with ammonia import, venting port; Described venting port periphery is provided with three suspension ring and three cooling water outlets, is evenly provided with three sensors, for measuring the temperature of three directions in body of heater in body of heater side; Described body of heater middle part is provided with anode connection, and described bottom of furnace body is provided with cold water inlet; Described body of heater and pedestal form nitriding district, and negative plate, cathode carrier, ammonia import, gas distribution pipe, sensor and venting port are set in described nitriding district.
2. a kind of cathode rotary nitriding furnace according to claim 1, is characterized in that, described negative plate below is provided with multiple rollers and mates with base size, is provided with cirque slideway on pedestal; Under the motor driving outside of described negative plate, can rotate along annular slide track; Its traffic direction is two-way controlled, and speed of rotation can regulate; Described pedestal maintains static; Described negative plate is communicated with cathode connection by coaxial manner.
3. a kind of cathode rotary nitriding furnace according to claim 1, is characterized in that, described negative plate top is provided with at least cathode carrier of one deck annular spread, layer from inside to outside, and cathode carrier quantity increases, and cathode carrier annular is uniformly distributed; Described cathode carrier is connected by bayonet socket with negative plate.
4. a kind of cathode rotary nitriding furnace according to claim 1, is characterized in that, top, described negative plate central position is to extend from furnace roof portion the ammonia gas distribution pipe getting off, and the ammonia through preheating, by multiple gas distribution pipes, is uniformly distributed on negative plate.
5. a kind of cathode rotary nitriding furnace according to claim 1, is characterized in that, described venting port is arranged at furnace roof portion, coaxially arrange with described ammonia import, internal pipeline is ammonia import, and outside endless tube is venting port, in the time that ammonia is inner through vapor pipe, be preheated; Described venting port is arranged at furnace roof portion, along at least two exhaust branch pipes of level attitude setting.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009341.0U CN203754794U (en) | 2014-01-08 | 2014-01-08 | Cathode rotating nitriding furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420009341.0U CN203754794U (en) | 2014-01-08 | 2014-01-08 | Cathode rotating nitriding furnace |
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| CN203754794U true CN203754794U (en) | 2014-08-06 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151779A (en) * | 2017-05-27 | 2017-09-12 | 西华大学 | Nitriding controllable zero pollution ion nitriding device |
| CN107177816A (en) * | 2017-05-15 | 2017-09-19 | 西华大学 | Ion nitriding device for realizing nitriding uniform temperature of workpiece |
| CN115889490A (en) * | 2023-01-05 | 2023-04-04 | 江苏兴业铝材有限公司 | Aluminum profile anti-extrusion embossing die nitriding treatment equipment |
-
2014
- 2014-01-08 CN CN201420009341.0U patent/CN203754794U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107177816A (en) * | 2017-05-15 | 2017-09-19 | 西华大学 | Ion nitriding device for realizing nitriding uniform temperature of workpiece |
| CN107177816B (en) * | 2017-05-15 | 2019-06-28 | 西华大学 | Ion nitriding device for realizing nitriding uniform temperature of workpiece |
| CN107151779A (en) * | 2017-05-27 | 2017-09-12 | 西华大学 | Nitriding controllable zero pollution ion nitriding device |
| CN107151779B (en) * | 2017-05-27 | 2019-04-16 | 西华大学 | Nitriding controllable zero pollution ion nitriding device |
| CN115889490A (en) * | 2023-01-05 | 2023-04-04 | 江苏兴业铝材有限公司 | Aluminum profile anti-extrusion embossing die nitriding treatment equipment |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20170108 |