CN203419976U - Nitriding furnace - Google Patents
Nitriding furnace Download PDFInfo
- Publication number
- CN203419976U CN203419976U CN201320479592.0U CN201320479592U CN203419976U CN 203419976 U CN203419976 U CN 203419976U CN 201320479592 U CN201320479592 U CN 201320479592U CN 203419976 U CN203419976 U CN 203419976U
- Authority
- CN
- China
- Prior art keywords
- nitriding furnace
- heating chamber
- cooling room
- cup
- heating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Furnace Details (AREA)
Abstract
The utility model discloses a nitriding furnace. The nitriding furnace comprises a furnace body, a vacuumizing device (1), a heating device (2) and a cooling device (3), wherein the furnace body is provided with a furnace body (42) for closing the furnace body; an openable and closable isolation device is arranged in the furnace body and divides the furnace body into a front chamber (4), a cooling chamber (5) and a heating chamber (6); the furnace body (42) is arranged at the feeding and discharging opening of the front chamber (4); the vacuumizing device (1) is connected with the front chamber (4); the cooling device (3) is arranged in the cooling chamber (5); the heating device (2) is arranged in the heating chamber (6); the heating chamber (6) is provided with an ammonia gas inlet (61). The nitriding furnace has a good nitriding effect and an excellent heat insulation effect, and is low in energy consumption and safe in use.
Description
Technical field
The utility model relates to a kind of equipment for Heating Processing, relates in particular to a kind of nitriding furnace.
Background technology
The nitriding treatment of workpiece is referred in the vacuum seal container in nitriding furnace and passes into ammonia, be heated to and keep reasonable time (not requiring 3h ~ 90h not etc. according to workpiece material and infiltration layer) after specified temp, make nitriding workpiece surface obtain nitrogenous strengthening layer, obtain the workpiece of high rigidity, high-wearing feature, high safe range of stress and excellent abrasive resistance.
In order to shorten the nitrogenize cycle, and make nitriding process not be subject to the restriction of steel grade, on former nitriding process basis, developed again tufftride and two kinds of new nitriding processes of ion nitriding between in recent years.Tufftride is in fact to take nitriding as main low-temperature nitrocarburizing, when the nitrogen-atoms of steel infiltrates, also has a small amount of carbon atom to infiltrate, and its result is compared with general gas flow nitrogenize, and nitrided layer hardness is low compared with nitrogenize, and fragility is less, therefore be called tufftride.The feature that nitriding furnace carries out tufftride is: treatment temp is low, and the time is short, and workpiece deformation is little, and workpiece do not limit by steel grade, can significantly improve fatigue strength, wear resistance and the erosion resistance of workpiece.
The existing nitriding furnace for nitrogenize and tufftride is of a great variety, also has record and the description of pair nitriding furnace in partial monopoly document.
CN201495276U Chinese patent literature discloses a kind of Multifunctional nitriding furnace, and this nitriding furnace is mainly to pass in order to solve existing nitriding furnace the problem that gas is single, by setting up and improve the vent line of nitriding furnace, so that a kind of multi-functional nitriding furnace to be provided.
A kind of high-temperature pressure nitriding furnace is disclosed in CN201583125U Chinese patent literature, this nitriding furnace includes body of heater, admission passage, outlet pipe, circulating water line etc., and it is mainly and solves that existing nitriding furnace heat insulation effect is poor, cooling measure is not enough and nitrogenize air pressure such as can not regulate at any time at the problem.
In CN202047127U Chinese patent literature, disclose a kind of nitriding furnace, this nitriding furnace is mainly the structure of having improved nitrogen flushing pipe, make the nitrogen that oozes out can be in body of heater uniformly dispersing.
In addition, also having partial monopoly document is that partial component or structure for nitriding furnace improves, a kind of gas barrier of vacuum backfire nitriding furnace is for example disclosed in CN201151729Y Chinese patent literature, in CN201850302U Chinese patent literature, disclose a kind of insulation construction of nitriding furnace cover, CN201850301U Chinese patent literature discloses a kind of pressure control device of gas nitriding furnace.
All there is the defects such as simple in structure, function singleness, equipment integration are not high, automatic controlled difference in existing nitriding furnace structure above, existing nitriding furnace is when being applied to the nitrogenize of workpiece, tufftride processing, often adaptability is not strong, and poor operability is further improved and perfect.
Utility model content
The technical problems to be solved in the utility model is just: the technical problem existing for prior art, provides that a kind of nitriding treatment is effective, good heat-insulation effect, energy consumption are low, use safe nitriding furnace.
For solving the problems of the technologies described above, the technical scheme the utility model proposes is:
A kind of nitriding furnace, comprise body of heater, vacuum extractor, heating unit and refrigerating unit, described body of heater is provided with the fire door for closed furnace body, in described body of heater, be provided with barrier means to be opened/closed, the isolated device of described body of heater is divided into cup, cooling room and heating chamber, and described fire door is located at the feed inlet and outlet of cup, described vacuum extractor is connected with cup, described refrigerating unit is fixedly arranged on cooling room, and described heating unit is fixedly arranged on heating chamber, and described heating chamber is provided with ammonia entrance.
As further improvement of the utility model, be:
Described barrier means comprises the first partition door and the second partition door, and described the first partition door is between cup and cooling room, and described the second partition door is between cooling room and heating chamber.
Described cup is provided with the first pneumatic tube, and described the first pneumatic tube source nitrogen external with body of heater is communicated with.
In described cooling room, be provided with for transferring up and down the elevator of workpiece.
Described refrigerating unit comprises the second pneumatic tube and stirrer, and described the second pneumatic tube is communicated with described source nitrogen, and described stirrer is fixed on the top of cooling room, and described cooling room is provided with temperature regulating device.
Described the first pneumatic tube and the second pneumatic tube are respectively equipped with the setting device that nitrogen flow is controlled.
Described heating unit comprises one group of electric heating tube, and described electric heating tube is fixed on heating chamber top.
Described ammonia entrance is at least two, and is arranged on the below of described heating chamber.
Described heating chamber top is provided with ammonia splitter, and the surrounding of described ammonia splitter is provided with at least one incendiary pencil.
Described nitriding furnace also comprises the e Foerderanlage for conveying work pieces, and described e Foerderanlage is in cup, cooling room and heating chamber.
Compared with prior art, the utility model has the advantage of:
(1) nitriding furnace of the present utility model, the isolated device of body of heater is divided into cup, cooling room and heating chamber, mutually isolated with partition door between three chambers, form three enclosed spaces, workpiece is when heating chamber heats, it is faster that temperature raises, and temperature control better effects if can improve the mechanical property of workpiece surface.
(2) nitriding furnace of the present utility model, refrigerating unit comprises the second pneumatic tube and stirrer, workpiece is cooling under the nitrogen gas environment of cooling room, adopt stirrer generation of forced gaseous exchange, cooling room is provided with temperature regulating device, according to the difference of the required cooling rate of different workpieces and temperature, temperature regulating device is set, when cooling room temp is during in range of set value, the second pneumatic tube is closed; When temperature higher than set cooling temperature time, the second pneumatic tube will be inputted nitrogen to cooling room and reduce room temp.The utility model energy consumption is low, is applicable to different workpiece, and can improve the stability of workpiece surface mechanical property cooling time.
(3) nitriding furnace of the present utility model, in cooling room, be provided with for transferring up and down the elevator of workpiece, when workpiece need are cooling, with elevator, workpiece is delivered to cooling room below, on cooling room, can continue to enter heating chamber by workpiece, save the time of workpiece nitrogenize, be conducive to realize nitrogenize in batches, increase work efficiency.
(4) nitriding furnace of the present utility model, heating chamber below ammonia entrance, workpiece heats under ammonia gas environment, can improve the heat treatment efficiency of workpiece, and can improve workpiece surface nitrogen content.
(5) heating chamber of the present utility model top is provided with ammonia splitter, before workpiece enters heating chamber, do not need to use vacuum extractor to vacuumize, but first open the air in heating unit intensification heating chamber, then pass into ammonia, when ammonia enters ammonia splitter, be decomposed into nitrogen and hydrogen, incendiary pencil burning hydrogen, shows that heating chamber is full of ammonia, and workpiece can enter heating chamber.The utility model energy utilization rate is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that the K of Fig. 1 is to view.
Marginal data: 1, vacuum extractor; 2, heating unit; 3, refrigerating unit; 31, the second pneumatic tube; 32, stirrer; 4, cup; 41, the first partition door; 42, fire door; 43, the first pneumatic tube; 5, cooling room; 51, the second partition door; 52, elevator; 6, heating chamber; 61, ammonia entrance; 62, ammonia splitter; 63, incendiary pencil; 7, e Foerderanlage.
Embodiment
Below in conjunction with Figure of description and concrete preferred embodiment, the utility model is further described, but does not therefore limit protection domain of the present utility model.
As depicted in figs. 1 and 2, nitriding furnace of the present utility model, comprise body of heater, vacuum extractor 1, heating unit 2, refrigerating unit 3 and e Foerderanlage 7, in body of heater, be provided with barrier means to be opened/closed, the isolated device of body of heater is divided into cup 4, cooling room 5 and heating chamber 6, cup 4 is provided with feed inlet and outlet, and feed inlet and outlet is provided with fire door 42, and the keying of fire door 42 is controlled by a cylinder.Vacuum extractor 1 is connected with cup 4, and refrigerating unit 3 is fixedly arranged on cooling room 5, and heating unit 2 is fixedly arranged on heating chamber 6, and heating chamber 6 is provided with ammonia entrance 61.E Foerderanlage 7 can be trolley type e Foerderanlage, and e Foerderanlage 7, in cup 4, cooling room 5 and heating chamber 6, can move workpiece between three chambers.
In the nitriding furnace of the present embodiment, barrier means comprises that the first partition door 41 and the second partition door 51, the first partition doors 41 are between cup 4 and cooling room 5, and the second partition door 51 is between cooling room 5 and heating chamber 6.Cup 4 is provided with the below that the first pneumatic tube 43, the first pneumatic tubes 43 are positioned at cup 4 e Foerderanlages 7.Refrigerating unit 3 comprises the second pneumatic tube 31 and stirrer 32, the first pneumatic tube 43 and the second pneumatic tube 31 source nitrogen external with body of heater are communicated with, the first pneumatic tube 43 and the second pneumatic tube 31 are respectively equipped with setting device, can regulate control to the nitrogen flow passing in cup 4 and cooling room 5.Setting device comprises under meter and variable valve.The blowing mouth of the second pneumatic tube 31 is positioned at the top of cooling room 5, and stirrer 32 is fixed on the top of cooling room 5, makes the nitrogen gas generation forced convection of input, accelerates speed of cooling.In cooling room 5, be provided with for transferring up and down the elevator 52 of workpiece, when work-piece cools, by elevator 52, workpiece movable is arrived to the below of cooling room 5, next batch workpiece is entered in heating chamber 6 from the top of cooling room 5 by e Foerderanlage 7, improve the working efficiency of nitriding furnace.Cooling room 5 is provided with temperature regulating device, according to the difference of different workpieces speed of cooling and temperature, arranges, and when the temperature of cooling room 5 is during in range of set value, the second pneumatic tube 31 is closed; When the temperature of cooling room 5 is during higher than set(ting)value, the second pneumatic tube 31 is opened, and passes into nitrogen, reduces the room temperature of cooling room 5, and temperature is maintained in the scope of set(ting)value, guarantees the stability of workpiece surface mechanical property.
The electric heating tube that heating unit 2 of the present utility model is at least one row, electric heating tube is fixed on heating chamber 6 tops, and heating chamber 6 tops are provided with ammonia splitter 62, and ammonia splitter 62 is provided with at least one incendiary pencil 63 around.The ammonia entrance 61 of heating chamber 6 is at least two, is installed in the below of heating chamber 6.The electric heating tube of the present embodiment is two rows, is symmetrically distributed in ammonia splitter 62 both sides.Before workpiece enters, heating unit 2 is opened, and makes the interior atmosphere temperature rising of heating chamber 6, and warm air is positioned at the top of heating chamber 6, and outside ammonia enters from the ammonia entrance 61 of heating chamber 6 belows, by the residual heat Bas Discharged of heating chamber 6 tops.Ammonia enters ammonia splitter 62 and is decomposed into nitrogen and hydrogen, and hydrogen enters incendiary pencil 63 and can burn, and shows to be full of ammonia in heating chamber 6.
Nitriding furnace principle of work of the present utility model is as follows:
(1) close the first partition door 41 and the second partition door 51, open heating unit 2, to heating chamber 6, pass into ammonia, thereby in cooling room 5, pass into nitrogen excluding air by the second pneumatic tube 31, when incendiary pencil produces blue flame, show to be full of ammonia in heating chamber 6;
(2) workpiece enters cup 4 by e Foerderanlage 7, closes fire door 42, opens the air that vacuum extractor 1 extracts cup 4, by the first pneumatic tube 43, to cup 4, passes into nitrogen;
(3) open the first partition door 41 and the second partition door 51, workpiece directly enters heating chamber 6 heating by e Foerderanlage 7 and carries out nitriding treatment, closes the first partition door 41 and the second partition door 51;
(4) after workpiece nitriding treatment, return cooling room 5, by elevator 52, deliver to cooling room 5 belows, open temperature regulating device and stirrer 32, during last consignment of work-piece cools, next batch workpiece continues to be fed into heating chamber 6 by e Foerderanlage 7 and heats;
(5) after work-piece cools, elevator 52 rises to e Foerderanlage 7 by workpiece, by e Foerderanlage 7, delivers to feed inlet and outlet.
Claims (10)
1. a nitriding furnace, comprise body of heater, vacuum extractor (1), heating unit (2) and refrigerating unit (3), described body of heater is provided with the fire door (42) for closed furnace body, it is characterized in that, in described body of heater, be provided with barrier means to be opened/closed, the isolated device of described body of heater is divided into cup (4), cooling room (5) and heating chamber (6), described fire door (42) is located at the feed inlet and outlet of cup (4), described vacuum extractor (1) is connected with cup (4), described refrigerating unit (3) is arranged in cooling room (5), described heating unit (2) is arranged in heating chamber (6), described heating chamber (6) is provided with ammonia entrance (61).
2. nitriding furnace according to claim 1, it is characterized in that, described barrier means comprises the first partition door (41) and the second partition door (51), described the first partition door (41) is positioned between cup (4) and cooling room (5), and described the second partition door (51) is positioned between cooling room (5) and heating chamber (6).
3. nitriding furnace according to claim 1, is characterized in that, described cup (4) is provided with the first pneumatic tube (43), and described the first pneumatic tube (43) source nitrogen external with body of heater is communicated with.
4. nitriding furnace according to claim 1, is characterized in that, is provided with the elevator (52) for transferring up and down workpiece in described cooling room (5).
5. nitriding furnace according to claim 3, it is characterized in that, described refrigerating unit (3) comprises the second pneumatic tube (31) and stirrer (32), described the second pneumatic tube (31) is communicated with outside source nitrogen, described stirrer (32) is fixed on the top of cooling room (3), and described cooling room (5) is provided with temperature regulating device.
6. nitriding furnace according to claim 5, is characterized in that, described the first pneumatic tube (43) and the second pneumatic tube (31) are respectively equipped with the setting device that nitrogen flow is controlled.
7. nitriding furnace according to claim 1, is characterized in that, described heating unit (2) comprises one group of electric heating tube, and described electric heating tube is fixed on heating chamber (6) top.
8. nitriding furnace according to claim 7, is characterized in that, described ammonia entrance (61) is at least two, and is arranged on the below of described heating chamber (6).
9. nitriding furnace according to claim 8, is characterized in that, described heating chamber (6) top is provided with ammonia splitter (62), and the surrounding of described ammonia splitter (62) is provided with at least one incendiary pencil (63).
10. according to the nitriding furnace described in any one in claim 1～9, it is characterized in that, described nitriding furnace also comprises the e Foerderanlage (7) for conveying work pieces, and described e Foerderanlage (7) is in cup (4), cooling room (5) and heating chamber (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479592.0U CN203419976U (en) | 2013-08-07 | 2013-08-07 | Nitriding furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320479592.0U CN203419976U (en) | 2013-08-07 | 2013-08-07 | Nitriding furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203419976U true CN203419976U (en) | 2014-02-05 |
Family
ID=50019076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320479592.0U Expired - Lifetime CN203419976U (en) | 2013-08-07 | 2013-08-07 | Nitriding furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203419976U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110960A (en) * | 2014-07-15 | 2014-10-22 | 机械工业第六设计研究院有限公司 | High-precision electric heating nitriding furnace |
| CN109504937A (en) * | 2019-01-15 | 2019-03-22 | 无锡双马钻探工具有限公司 | A kind of drilling rod finishing stove |
| CN109594036A (en) * | 2018-12-29 | 2019-04-09 | 重庆建大恒益气门有限公司 | Nitridation equipment and its technique based on valve high stability |
-
2013
- 2013-08-07 CN CN201320479592.0U patent/CN203419976U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104110960A (en) * | 2014-07-15 | 2014-10-22 | 机械工业第六设计研究院有限公司 | High-precision electric heating nitriding furnace |
| CN104110960B (en) * | 2014-07-15 | 2015-10-28 | 机械工业第六设计研究院有限公司 | High-accuracy electric heating nitriding furnace |
| CN109594036A (en) * | 2018-12-29 | 2019-04-09 | 重庆建大恒益气门有限公司 | Nitridation equipment and its technique based on valve high stability |
| CN109594036B (en) * | 2018-12-29 | 2020-07-28 | 重庆建大恒益气门有限公司 | Nitriding equipment based on high stability of air valve and process thereof |
| CN109504937A (en) * | 2019-01-15 | 2019-03-22 | 无锡双马钻探工具有限公司 | A kind of drilling rod finishing stove |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202347079U (en) | Three-chamber vacuum high-temperature and low-pressure continuous carburization equipment | |
| CN204325430U (en) | The low pressure air cooling vacuum annealing oven that a kind of speed of cooling is controlled | |
| CN202902837U (en) | Multi-heating-cavity vacuum resistance furnace | |
| CN203419976U (en) | Nitriding furnace | |
| CN201289290Y (en) | Rapid cooling type intermediate frequency induction sintering furnace | |
| CN202099324U (en) | Three-section continuous vacuum annealing furnace | |
| CN103602944A (en) | Thermal treatment furnace and thermal treatment technology thereof for super-huge type multifunctional natural gas energy-saving part | |
| CN101363077A (en) | Isothermal spheroidizing technology of cold precision forging gear blank | |
| CN204612451U (en) | A kind of vacuum drying oven for high-performance samarium-cobalt permanent-magnetic material sintering | |
| CN201212049Y (en) | Automatic heating quenching vacuum atmosphere oven | |
| CN204874630U (en) | Handle powder material's high temperature vacuum apparatus | |
| CN203011128U (en) | Vacuum hot pressing sintering furnace | |
| CN204555643U (en) | A kind of many heating chambers atmosphere furnace | |
| CN103388120B (en) | A kind of box nitrogenize multipurpose furnace | |
| CN203923307U (en) | vertical annealing furnace | |
| CN205619759U (en) | Positive anode material of lithium ion battery is adjustable gas kiln of atmosphere for sintering | |
| CN101749935A (en) | Atmosphere-adjustable high-temperature haydite sintering device | |
| CN101445861A (en) | Air-cooling equipment for external-circulation multi-heat exchanger furnace | |
| CN201575688U (en) | High temperature ceramsite sintering device with atmosphere capable of being adjusted | |
| CN203866376U (en) | Chain hopper type vacuum titanium alloy water quenching furnace | |
| CN108328915B (en) | Transverse circulating toughened glass homogenizing furnace | |
| CN103836899B (en) | Cluster batch (-type) refractory brick dry kiln UTILIZATION OF VESIDUAL HEAT IN technique | |
| CN101186958A (en) | Double-chamber high-pressure gas-quenching vacuum furnace | |
| CN205258531U (en) | Continuous type almag heat treatment furnace | |
| CN105331790A (en) | Continuous aluminum magnesium alloy thermal treatment furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140205 |
|
| CX01 | Expiry of patent term |