CN108588632A - A kind of vacuum nitriding stove - Google Patents
A kind of vacuum nitriding stove Download PDFInfo
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- CN108588632A CN108588632A CN201810782353.XA CN201810782353A CN108588632A CN 108588632 A CN108588632 A CN 108588632A CN 201810782353 A CN201810782353 A CN 201810782353A CN 108588632 A CN108588632 A CN 108588632A
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- room
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- cooling chamber
- heating
- vacuum
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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
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/24—Nitriding
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The present invention provides a kind of vacuum nitriding stoves, belong to technical field of heat treatment, it solves the problems, such as that existing vacuum nitriding equipment processing effect is poor.This vacuum nitriding furnace includes：Furnace body, furnace body both ends fasten respectively bell, and furnace body is made of the preparation room of unicom successively, heating room and cooling chamber, insulated door is provided between adjacent two Room, two bells are connected with preparation room, cooling chamber respectively；Cradle, is set as two and two cradles are symmetricly set on furnace body both ends, and the material frame for placing workpiece is movably set on cradle, and material frame sequentially enters preparation room, heating room and cooling chamber and is processed；Vacuum system, setting furnace body side and vacuum system respectively with preparation room, heating room and cooling chamber unicom；Nitrogen storage tank, in the furnace body other side, nitrogen storage tank with heating room, cooling chamber unicom, and when nitrogen enters heating room, can be filled indoor in heating and be circulated respectively for setting.The present invention has the characteristics that processing effect is good.
Description
Technical field
The invention belongs to technical field of heat treatment, are related to a kind of vacuum nitriding stove, especially a kind of to be produced for high chrome alloy steel
Vacuum nitriding stove.
Background technology
Vacuum heat refer to heat treatment process all with part carry out under vacuum conditions, it can be achieved that non-oxidation,
Without decarburization, without carburizing, the effects that degreasing degasification, is considered and had to the phosphorus that can remove workpiece surface to be worth doing, to reach surface-brightening purification
Effect, thermal treatment quality greatly improve.The necessary means of certain specific alloy heat treatments are not only, and in common engineering steel
Heat treatment in also applied, especially tool, mold and accurate coupling part etc., service life is more general after vacuum heat
Heat treatment is greatly improved.
To improve the wearability of metal, mainly to obtain higher case hardness, workpiece surface hardness is bright after general nitriding
It is aobvious to improve.It is common to have liquid nitriding, gas nitriding, glow discharge nitriding.Traditional gas nitriding is that workpiece is put into sealing container,
The ammonia of flowing and heating are passed to, after keeping the temperature the long period, ammonia thermal decomposition generates activated nitrogen atom, and workpiece surface is penetrated into diffusion
It is interior, to change the chemical composition and tissue on surface layer.
And in the existing heat treatment to metal product, often after vacuum heat treatment, pass through different processing equipments
Nitridation process is carried out to product again, equipment cost is high, and process time is relatively long, reduces production efficiency, is unfavorable for product
Production.
In addition, independent nitriding equipment is arranged, putting for one side product is restricted, and processing every time can only process few portion
The product divided, further decreases the production efficiency of product；On the other hand, it needs production interchange to corresponding equipment, people manually
Work operating quantity is big, time-consuming and laborious.
In conclusion for the deficiency for solving on existing vacuum nitriding device structure, the present invention devises a kind of structure conjunction
The good vacuum nitriding stove of reason, processing effect.
Invention content
The present invention in order to solve the problems existing in the prior art, provides a kind of vacuum nitriding stove reasonable for structure, processing effect is good.
The purpose of the present invention can be achieved through the following technical solutions：A kind of vacuum nitriding stove, including：
Furnace body, furnace body both ends fasten respectively bell, and the furnace body is by the preparation room of unicom successively, heating room and cooling chamber structure
At being provided with insulated door between adjacent two Room, two bells are connected with preparation room, cooling chamber respectively；
Cradle, is set as two and two cradles are symmetricly set on furnace body both ends, is movably set on cradle for placing
The material frame of workpiece, the material frame sequentially enter preparation room, heating room and cooling chamber and are processed；
Vacuum system, setting furnace body side and vacuum system respectively with preparation room, heating room and cooling chamber unicom；
Nitrogen storage tank, setting in the furnace body other side, nitrogen storage tank respectively with heating room, cooling chamber unicom, and enter when nitrogen plus
When hot cell, it can fill indoor in heating and circulate.
As being further improved for this case, heating indoor location has heating electrode, is provided with outside furnace body and heating electrode electricity
The controller of connection.
Another step as this case is improved, and cooling fan is equipped at the top of cooling chamber, and cooling fan can drive nitrogen when rotating
Gas convection current up and down.
As being further improved for this case, cooling chamber both sides are respectively arranged with radiator, and cooling is provided with outside cooling chamber
Pond, radiator both ends are respectively by water pipe and cooling pond unicom, and radiator outer cover is equipped with metal shell.
Another step as this case is improved, and nitrogen storage tank room unicom and is equipped with heating by air inlet pipe in air inlet pipe
Flow controller.
The escape pipe with heating room unicom is equipped with as being further improved for this case, on furnace body, the escape pipe is outside
Extend and is connected with oil-sealed rotary pump.
Another step as this case is improved, and is symmetrically arranged with two tracks on cradle, each track is partly embedded and is sending
In rack, two track opposite sides open up fluted respectively.
Compared with prior art, structure of the invention setting is reasonable, passes through preparation room, heating room and cooling chamber in nitriding furnace
Setting, in vacuum nitriding stove to product carry out quenching and Nitrizing Treatment, save time and expense, improve production efficiency；It adopts
Windrow shove charge is realized with material frame, and batch is big, the setting of cooperation cradle upper rail, conveying facility；Pass through nitrogen and cooling water
Collective effect cools down workpiece, good cooling results；Using high pure nitrogen as nitriding and cooling raw material, in heat treatment process
Middle free from extraneous odour, smokeless, reduce environmental pollution, and production effect is good.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Fig. 2 is the phantom of Fig. 1.
Fig. 3 is the structural schematic diagram of radiator in the present invention.
Fig. 4 is the sectional view of cradle in the present invention.
In figure, 10, furnace body；11, preparation room；12, room is heated；13, cooling chamber；14, insulated door；15, bell；16, it heats
Electrode；17, controller；18, cooling fan；19, radiator；191, water pipe；192, metal shell；20, cradle；21, material frame；
22, track；23, groove；31, vacuum system；32, nitrogen storage tank；321, air inlet pipe；322, flow controller；33, cooling water
Pond.
Specific implementation mode
With reference to embodiment and attached drawing, technical scheme of the present invention is further elaborated.
As depicted in figs. 1 and 2, this vacuum nitriding furnace includes：
Furnace body 10,10 both ends of furnace body fasten respectively bell 15, furnace body 10 by unicom successively preparation room 11, heating room 12 and
Cooling chamber 13 is constituted, and is provided with insulated door 14 between adjacent two Room, two bells 15 are connected with preparation room 11, cooling chamber 13 respectively；
Cradle 20, is set as two and two cradles 20 are symmetricly set on 10 both ends of furnace body, is movably set on cradle 20
Material frame 21 for placing workpiece, material frame 21 sequentially enter preparation room 11, heating room 12 and cooling chamber 13 and are processed；
Vacuum system 31, setting 10 side of furnace body and vacuum system 31 respectively with preparation room 11, heating room 12 and cooling chamber
13 unicom；
Nitrogen storage tank 32, in 10 other side of furnace body, nitrogen storage tank 32 with heating room 12,13 unicom of cooling chamber, and is worked as respectively for setting
When nitrogen enters heating room 12, it can fill in heating room 12 and circulate.
The existing Nitrizing Treatment to metal product often after vacuum heat treatment, it is right again by different processing equipments
Product carries out nitridation process, and equipment cost is high, and long processing time, low production efficiency is unfavorable for production.In addition, setting is only
Vertical nitriding equipment, putting for one side product are restricted, and can only be processed least a portion of product every time, be further decreased product
Production efficiency；On the other hand, it needs manually by production interchange to corresponding equipment, manual operation load is big, time-consuming and laborious.
For this purpose, the present invention devises a kind of vacuum nitriding stove, pass through preparation room in nitriding furnace 11, heating room 12 and cooling
The setting of room 13 carries out quenching and Nitrizing Treatment to product in vacuum nitriding stove, saves time and expense, improves production effect
Rate.
Specifically, by material frame 21 by workpiece along cradle 20 enter furnace body 10, by preparation room 11, heating room 12 with
And the processing such as cooling chamber 13 is quenched, nitriding, it is obstructed by insulated door 14 between adjacent two Room, it is ensured that processing environment is steady
It is fixed.Preferably three Room of furnace body 10 are vacuumized by vacuum system 31 in the present embodiment, material frame 21 carries workpiece and entering
Before heating room 12 and cooling chamber 13, first carry out vacuumizing work, it is ensured that reach vacuum level requirements when work.
Each room is vacuumized using vacuum system 31 in the present embodiment, vacuum system 31 is practical by vacuum pump, control
The compositions such as system, air accumulator, vacuum pipe, vacuum valve, particular by vacuum pipe and preparation room 11, heating room 12 and
13 unicom of cooling chamber, it preferably carries out vacuumizing work.
In addition, it is to provide nitrogen raw material in nitriding and cooling procedure that nitrogen storage tank 32 is preferably provided in the present embodiment, it is real
Border is in use, be provided with the equipment such as liquid nitrogen container, gasification installation, by nitrogen by being used again after liquid nitrogen gasification, nitrogen herein
High-purity nitrogen is selected, free from extraneous odour, smokeless, reduce environmental pollution during heat treatment, are conducive to vacuum nitriding process
It is lasting to carry out.
It is noted that when heating in room 12 to workpiece progress nitriding, by the way of nitrogen circulation flowing, to work
Part carries out sufficient nitriding, it is ensured that the final product quality of workpiece meets the requirements.
Preferably, it heats and heating electrode 16 is installed in room 12, be provided with outside furnace body 10 and heat what electrode 16 was electrically connected
Controller 17.
The heating that temperature in room 12 is preferably heated in the present embodiment is realized by heating electrode 16, specifically, in furnace body
Controller 17 is arranged in 10 outsides, is directly controlled by outside and heats temperature in room 12, while the structure of display screen etc can be arranged
By temperature feedback in heating room 12 to outside, personal observations easy to operation and the variation for controlling temperature.
As shown in Figures 2 and 3, further, 13 top of cooling chamber is equipped with cooling fan 18, energy when cooling fan 18 rotates
Drive nitrogen convection current up and down.
Material frame 21 drives workpiece to enter after cooling chamber 13 to be in 18 lower section of cooling fan, and nitrogen storage tank 32 is towards cooling chamber 13
Interior supplying nitrogen when cooling fan 18 rotates, drives nitrogen to carry out convection current up and down in 21 both sides of material frame, realizes the cooling to workpiece
Work.
Preferably, 13 both sides of cooling chamber are respectively arranged with radiator 19, and cooling pond 33 is provided with outside cooling chamber 13, dissipate
19 both ends of hot device are respectively by water pipe 191 and 33 unicom of cooling pond, and 19 outer cover of radiator is equipped with metal shell 192.
When practical operation, since workpiece temperature is very high, nitrogen can pass to nitrogen close to the temperature of rear workpiece, to ensure
Nitrogen carries out circulating cooling, radiator 19 is arranged in cooling chamber 13, the both ends of radiator 19 pass through water pipe 191 and cooling pond
33 unicom are passed through cooling water outside furnace body 10, and nitrogen carries out convection current up and down between radiator 19 and workpiece, will be from workpiece
The temperature passed over transfers to pass to radiator 19, that is, passes to cooling water.
Cooling water in radiator 19 continually enters, and constantly exports, and the hot water of change of output can be carried out through apparatus for supercooling
It is again introduced into cooling pond 33 after cooling, and then reenters cooling chamber 13 and cooling work is carried out to workpiece.Herein, metal shell
The transmission of temperature is further convenient in 192 setting, ensures cooling abundant.
As illustrated in fig. 1, it is preferred that nitrogen storage tank 32 is by air inlet pipe 321 and heating 12 unicom of room and in air inlet pipe 321
Flow controller 322 is installed.
Further, the escape pipe with heating 12 unicom of room is equipped on furnace body 10（It is not shown in figure）, the escape pipe
Extend outwardly and is connected with oil-sealed rotary pump（It is not shown in figure）.
When carrying out nitriding work in heating room 12, a point multiple stages carry out workpiece, and following for nitrogen is carried out in final stage
The input of ring, nitrogen is the room 12 of input heating on one side at this time, and the room 12 of output heating on one side, wherein nitrogen is intermittent output, is added
Pressure control is in a certain range in hot cell 12.
When air pressure reaches the peak of restriction, by oil-sealed rotary pump control nitrogen output heating room 12, heat in room 12
Air pressure decreases, and when reaching restriction minimum, stops nitrogen output, the supplying nitrogen that so moves in circles makes the nitriding of workpiece
It works well, product quality is high.
Wherein, it since the nitrogen temperature of output is relatively high, carries out cooling later again to outside drain.
The setting of flow controller 322 can control nitrogen towards the rate of input in heating room 12, control the input of nitrogen
Rate is conducive to improve the nitrogenizing effect of workpiece, and then ensures the final product quality of workpiece.
As shown in Figure 4, it is preferable that two tracks 22 are symmetrically arranged on cradle 20, each track 22 is partly embedded
In cradle 20, two tracks, 22 opposite side opens up fluted 23 respectively.
The setting of track 22 can be matched with the structure of material frame 21, and the groove 23 of two tracks, 22 opposite side is then convenient for material
The idler wheel of 21 bottom of frame is embedded in, and is transported and is more stablized.The fixation of its middle orbit 22 is embedded in cradle 20, it is ensured that the knot of track 22
Structure is stablized, and is conducive to material frame 21 and is moved along track 22.
This vacuum nitriding furnace structure setting is reasonable, passes through preparation room in nitriding furnace 11, heating room 12 and cooling chamber 13
Setting carries out quenching and Nitrizing Treatment to product in vacuum nitriding stove, saves time and expense, improves production efficiency；Using
Material frame 21 realizes windrow shove charge, and batch is big, the setting of cooperation cradle 20 upper rail 22, conveying facility；By nitrogen and cold
But water collective effect cools down workpiece, good cooling results；Using high pure nitrogen as nitriding and cooling raw material, it is being heat-treated
Free from extraneous odour, smokeless in the process, reduce environmental pollution, and production effect is good.
Described herein is only the preferred embodiment of the present invention, but protection scope of the present invention is not limited to
This.The similar side of modify or supplement or adopt that those skilled in the art in the invention carry out described specific embodiment
Formula is replaced, and should all be covered by within protection scope of the present invention.
Claims (7)
1. a kind of vacuum nitriding stove, which is characterized in that including：
Furnace body, furnace body both ends fasten respectively bell, and the furnace body is by the preparation room of unicom successively, heating room and cooling chamber structure
At being provided with insulated door between adjacent two Room, two bells are connected with preparation room, cooling chamber respectively；
Cradle, is set as two and two cradles are symmetricly set on furnace body both ends, is movably set on cradle for placing
The material frame of workpiece, the material frame sequentially enter preparation room, heating room and cooling chamber and are processed；
Vacuum system, setting furnace body side and vacuum system respectively with preparation room, heating room and cooling chamber unicom；
Nitrogen storage tank, setting in the furnace body other side, nitrogen storage tank respectively with heating room, cooling chamber unicom, and enter when nitrogen plus
When hot cell, it can fill indoor in heating and circulate.
2. a kind of vacuum nitriding stove according to claim 1, which is characterized in that heating indoor location has heating electrode, stove
It is external to be provided with the controller being electrically connected with heating electrode.
3. a kind of vacuum nitriding stove according to claim 1, which is characterized in that cooling fan is installed at the top of cooling chamber,
Cooling fan can drive nitrogen convection current up and down when rotating.
4. a kind of vacuum nitriding stove according to claim 1, which is characterized in that cooling chamber both sides are respectively arranged with heat dissipation
Device is provided with cooling pond outside cooling chamber, and radiator both ends are respectively by water pipe and cooling pond unicom, and outside radiator
It is arranged with metal shell.
5. a kind of vacuum nitriding stove according to claim 1, which is characterized in that nitrogen storage tank passes through air inlet pipe and heating room
Unicom and flow controller is installed in air inlet pipe.
6. a kind of vacuum nitriding stove according to claim 5, which is characterized in that be equipped on furnace body and heating room unicom
Escape pipe, the escape pipe extend outwardly and are connected with oil-sealed rotary pump.
7. a kind of vacuum nitriding stove according to claim 1, which is characterized in that two tracks are symmetrically arranged on cradle,
Each track is partly embedded in cradle, and two track opposite sides open up fluted respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782353.XA CN108588632A (en) | 2018-07-17 | 2018-07-17 | A kind of vacuum nitriding stove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810782353.XA CN108588632A (en) | 2018-07-17 | 2018-07-17 | A kind of vacuum nitriding stove |
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| Publication Number | Publication Date |
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| CN108588632A true CN108588632A (en) | 2018-09-28 |
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ID=63617772
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810782353.XA Pending CN108588632A (en) | 2018-07-17 | 2018-07-17 | A kind of vacuum nitriding stove |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110906734A (en) * | 2019-11-28 | 2020-03-24 | 山东道普安制动材料有限公司 | Brake disc continuous siliconizing furnace and working method thereof |
| CN112981308A (en) * | 2021-02-07 | 2021-06-18 | 南京宇能机械有限公司 | 30CrNiMo8 wind power gear ring nitriding process and equipment |
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| JP2008189955A (en) * | 2007-02-01 | 2008-08-21 | Dowa Thermotech Kk | Plasma nitriding treatment system |
| JP2009084633A (en) * | 2007-09-28 | 2009-04-23 | Dowa Thermotech Kk | Plasma nitriding treatment device, and continuous type plasma nitriding treatment method |
| CN203419959U (en) * | 2013-08-07 | 2014-02-05 | 湖南特科能热处理有限公司 | Vacuum quenching furnace |
| CN103740909A (en) * | 2013-12-25 | 2014-04-23 | 苏州市万泰真空炉研究所有限公司 | Monitoring and operating three-chamber vacuum furnace |
| CN208701181U (en) * | 2018-07-17 | 2019-04-05 | 嘉兴合邦机械科技有限公司 | A kind of vacuum nitriding furnace |
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2018
- 2018-07-17 CN CN201810782353.XA patent/CN108588632A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008189955A (en) * | 2007-02-01 | 2008-08-21 | Dowa Thermotech Kk | Plasma nitriding treatment system |
| JP2009084633A (en) * | 2007-09-28 | 2009-04-23 | Dowa Thermotech Kk | Plasma nitriding treatment device, and continuous type plasma nitriding treatment method |
| CN203419959U (en) * | 2013-08-07 | 2014-02-05 | 湖南特科能热处理有限公司 | Vacuum quenching furnace |
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| CN208701181U (en) * | 2018-07-17 | 2019-04-05 | 嘉兴合邦机械科技有限公司 | A kind of vacuum nitriding furnace |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110906734A (en) * | 2019-11-28 | 2020-03-24 | 山东道普安制动材料有限公司 | Brake disc continuous siliconizing furnace and working method thereof |
| CN110906734B (en) * | 2019-11-28 | 2021-10-08 | 山东道普安制动材料有限公司 | Brake disc continuous siliconizing furnace and working method thereof |
| CN112981308A (en) * | 2021-02-07 | 2021-06-18 | 南京宇能机械有限公司 | 30CrNiMo8 wind power gear ring nitriding process and equipment |
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