CN106868447A - Gear Processing well formula gas nitriding furnace - Google Patents
Gear Processing well formula gas nitriding furnace Download PDFInfo
- Publication number
- CN106868447A CN106868447A CN201710232053.XA CN201710232053A CN106868447A CN 106868447 A CN106868447 A CN 106868447A CN 201710232053 A CN201710232053 A CN 201710232053A CN 106868447 A CN106868447 A CN 106868447A
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- China
- Prior art keywords
- furnace body
- nitridation
- ammonia
- furnace
- heat
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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
- C23C8/26—Nitriding of ferrous surfaces
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
A kind of Gear Processing well formula gas nitriding furnace, including nitridation furnace body, bell is provided with the top of nitridation furnace body, the internal partition for avoiding body of heater from being reacted with ammonia is provided with the inside of nitridation furnace body, the inside of the nitridation furnace body is provided with the deflector for being oriented to ammonia recycle and the fan coordinated with deflector, and the motor of start and stop fan is provided with the top of bell；The nitridation furnace body is externally provided with the opening and closing lid mechanism of control furnace cover lifting.Copper plate is closely welded the present invention surface with retort, use guide shell instead copper plate manufacture, prevent contact of the ammonia with steel in retort, because fine copper does not react with ammonia, so using how long, tank surface is reacted all without the effect that catalyst occurs, the only workpiece in stove, greatly reduces the consumption of ammonia, without the frequently workpiece such as replacing retort, deflector, so, the consumption of ammonia had both been reduced, the service life of equipment component had been in turn ensure that.
Description
Technical field
The present invention relates to a kind of gas nitriding furnace, particularly a kind of Gear Processing well formula gas nitriding furnace.
Background technology
Existing most of gears, are required to nitrogen treatment, and consumption is needed to increase the surface property of product, in nitridation process
Medium when substantial amounts of ammonia is as nitriding is used to react.The principle of gas nitriding, is that workpiece is placed in stove, using NH3 gas
Directly it is input into 500 ~ 550 DEG C of nitriding furnace, is kept for 20 ~ 100 hours, NH3 gas is decomposed into (N) gas and (H) of state of atom
Gas and carry out Nitrizing Treatment, the surface of steel is produced wear-resisting, corrosion-resistant compound layer for main purpose, the resolution ratio of NH3
Changed depending on size and the height of temperature of flow, the bigger then resolution of flow is lower, and the smaller then resolution ratio of flow is higher,
Temperature heals, and high de-agglomeration rate is higher, and temperature heals, and low decomposition ratio is also lower, and NH3 gas is as follows through thermally decomposing at 570 DEG C:NH3 →〔N〕
The H2 of Fe+3/2 through decompositing the N for coming, with diffuse into the surface of steel and formed.Fe2-3N the gas nitridings of phase.Although
Under the ammonia of various resolution ratios, all can nitriding, but it is general all using 15 ~ 30% resolution ratio.Keep such resolution ratio, ability
Ensure nitriding quality.In nitriding process, the generation of nascent state nitrogen, i.e., steel material is in itself when being contacted with the steel material in heating because of ammonia
Promote the decomposition of ammonia as catalyst.But it is pure in following shortcoming in production：1st, ammonia consumption is big, high cost：With using
The extension of time, in the presence of ammonia, surface starts scaling and crackle for retort, deflector, guide shell, these oxide skins and
Crackle serves the effect of ammonia decomposition catalyzer, accelerates decomposition rate of the ammonia in tank body, for the ammonia point for maintaining technique to need
Solution rate, must just increase the flow of ammonia, reinforcement production cost；2nd, part life is low in stove：In the presence of ammonia, part in stove
Surface can produce oxide skin and crackle, greatly shorten the service life of these parts, increased production cost, have impact on work
Make efficiency.
The content of the invention
The technical problem to be solved in the present invention is directed to the deficiencies in the prior art, proposes that a kind of ammonia that reduces is consumed, reduced
Production cost, it is ensured that the Gear Processing in equipment component life-span well formula gas nitriding furnace.
The technical problem to be solved in the present invention is achieved through the following technical solutions, a kind of Gear Processing well formula gas
Nitriding furnace, is characterized in：Including nitridation furnace body, bell is provided with the top of nitridation furnace body, the bottom for nitrogenizing furnace body is provided with
Heat resisting brick, heat-insulation and heat-preservation set is provided with the outer wall of nitridation furnace body, is provided with the inside of nitridation furnace body and is avoided body of heater and ammonia
The internal partition for being reacted, is provided with heating furnace silk between internal partition and nitridation furnace body, in heating furnace silk and nitridation furnace body
Between be provided with refractory wall, the inside of the nitridation furnace body is provided with the deflector for being oriented to ammonia recycle and the wind coordinated with deflector
Fan, is provided with the motor of start and stop fan at the top of bell；The nitridation furnace body is externally provided with the stove of control furnace cover lifting
Lid mechanism for opening/closing, the opening and closing lid mechanism includes the outer sleeve being fixedly connected by support and bell and in outer sleeve
Screw mandrel, the inside of outer sleeve be provided with screw mandrel coordinate internal thread, the nitridation furnace body be externally provided with drive screw rotation
Screw rod driving device.
The technical problem to be solved in the present invention can also be come further to realize by the following technical programs, at the bottom of heat resisting brick
Portion is provided with base.
The technical problem to be solved in the present invention can also by the following technical programs come further to realize that the internal partition is
Copper plate.
The technical problem to be solved in the present invention can also come further to realize by the following technical programs, the heat-insulation and heat-preservation
It is heat-preservation cotton to cover.
The technical problem to be solved in the present invention can also by the following technical programs come further to realize that the screw mandrel drives
Device includes screw mandrel motor and the decelerator coordinated with screw mandrel motor.
Compared with prior art, copper plate is closely welded the present invention surface with retort, uses guide shell instead red copper
Plate manufacture, prevent contact of the ammonia with steel in retort, because fine copper not with ammonia react, so using how long, tank surface all without
There is the effect of catalyst, the only workpiece in stove reacts, greatly reduce the consumption of ammonia, without frequently more
Change the workpiece such as retort, deflector, low production cost of the present invention, by the flow-reduction of ammonia to 2.5 ~ 4m3/ h, effect is very bright
It is aobvious, the consumption of ammonia had both been reduced, in turn ensure that the service life of equipment component.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the overlooking the structure diagram of Fig. 1.
Specific embodiment
A kind of Gear Processing well formula gas nitriding furnace, including nitridation furnace body 9, the top for nitrogenizing furnace body 9 is provided with stove
Lid 5, the bottom for nitrogenizing furnace body is provided with heat resisting brick 13, heat-insulation and heat-preservation set 8 is provided with the outer wall of nitridation furnace body, in nitriding furnace
The inside of body of heater is provided with the internal partition 11 for avoiding body of heater from being reacted with ammonia, is provided between internal partition 11 and nitridation furnace body 9
Heating furnace silk 10, refractory wall is provided between heating furnace silk and nitridation furnace body, and the inside of the nitridation furnace body is provided with guiding
The deflector 12 of ammonia recycle and the fan 7 coordinated with deflector 12, are provided with the driving electricity of start and stop fan at the top of bell
Machine 6；The nitridation furnace body is externally provided with the opening and closing lid mechanism of control furnace cover lifting, and the opening and closing lid mechanism is included by branch
Outer sleeve 4 and the screw mandrel 3 in outer sleeve that frame is fixedly connected with bell, are provided with the inside of outer sleeve 4 and match somebody with somebody with screw mandrel 3
The internal thread of conjunction, the nitridation furnace body is externally provided with the screw rod driving device of drive screw rotation.
Base 14 is provided with the bottom of heat resisting brick 13.The internal partition 11 is copper plate, and the red copper is directly as tank body
Material is obviously not suitable for.Because copper is 500OIntensity is substantially reduced during more than C, is studied by analysis, is determined using in old retort
Inner surface increase the thick copper plate of one layer of 3mm, copper plate is closely welded the surface with retort, use guide shell instead purple
Copper coin manufacture, prevent contact of the ammonia with steel in retort, because fine copper not with ammonia react, so using how long, tank surface is not
The effect of catalyst can occur, the only workpiece in stove is reacted, and the consumption of ammonia is greatly reduced, without frequently
Change the workpiece such as retort, deflector.Improved nitriding furnace is the flow-reduction of ammonia to 2.5 ~ 4m3/h.Effect is apparent.
The heat-insulation and heat-preservation set is heat-preservation cotton.The screw rod driving device includes screw mandrel motor 1 and coordinates with screw mandrel motor 1
Decelerator 2.
Claims (5)
1. a kind of Gear Processing well formula gas nitriding furnace, it is characterised in that：Including nitridation furnace body, the top of furnace body is nitrogenized
Bell is provided with, the bottom for nitrogenizing furnace body is provided with heat resisting brick, heat-insulation and heat-preservation set is provided with the outer wall of nitridation furnace body, in nitridation
The inside of furnace body is provided with the internal partition for avoiding body of heater from being reacted with ammonia, and heating is provided between internal partition and nitridation furnace body
Stove silk, is provided with refractory wall between heating furnace silk and nitridation furnace body, and the inside of the nitridation furnace body is provided with guiding ammonia and follows
The deflector of ring and the fan coordinated with deflector, are provided with the motor of start and stop fan at the top of bell；The nitridation
Furnace body is externally provided with the opening and closing lid mechanism of control furnace cover lifting, and the opening and closing lid mechanism includes being fixed with bell by support
The outer sleeve for connecting and the screw mandrel in outer sleeve, the internal thread coordinated with screw mandrel is provided with the inside of outer sleeve, described
Nitridation furnace body is externally provided with the screw rod driving device of drive screw rotation.
2. Gear Processing according to claim 1 well formula gas nitriding furnace, it is characterised in that：Set in the bottom of heat resisting brick
There is base.
3. Gear Processing according to claim 1 well formula gas nitriding furnace, it is characterised in that：The internal partition is red copper
Plate.
4. Gear Processing according to claim 1 well formula gas nitriding furnace, it is characterised in that：The heat-insulation and heat-preservation set is
Heat-preservation cotton.
5. Gear Processing according to claim 1 well formula gas nitriding furnace, it is characterised in that：The screw rod driving device
The decelerator coordinated including screw mandrel motor and with screw mandrel motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232053.XA CN106868447A (en) | 2017-04-11 | 2017-04-11 | Gear Processing well formula gas nitriding furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710232053.XA CN106868447A (en) | 2017-04-11 | 2017-04-11 | Gear Processing well formula gas nitriding furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106868447A true CN106868447A (en) | 2017-06-20 |
Family
ID=59163256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710232053.XA Pending CN106868447A (en) | 2017-04-11 | 2017-04-11 | Gear Processing well formula gas nitriding furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN106868447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819785A (en) * | 2019-11-13 | 2020-02-21 | 刘宏珠 | Regulation type gear heat treatment device for mining machinery |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202279855U (en) * | 2011-10-19 | 2012-06-20 | 人本集团有限公司 | Quick-cooling-type nitriding furnace |
| KR101194670B1 (en) * | 2010-05-17 | 2012-10-29 | 서울질화(주) | Nitriding furnace |
| CN202688411U (en) * | 2012-07-16 | 2013-01-23 | 浙江长兴奇伟工业炉制造有限公司 | Full-sealed carburizing and nitriding system |
| CN203411599U (en) * | 2013-08-07 | 2014-01-29 | 湖南特科能热处理有限公司 | Well type carburizing and nitriding furnace |
| CN205443427U (en) * | 2016-03-31 | 2016-08-10 | 特科能(株洲)科技有限公司 | Nitriding furnace |
| CN205747928U (en) * | 2016-07-08 | 2016-11-30 | 上海汇森益发工业炉有限公司 | Well formula nitriding furnace |
| CN205919665U (en) * | 2016-07-29 | 2017-02-01 | 河南省天利工业炉有限公司 | Well formula carbonitriding stove |
| CN206591169U (en) * | 2017-04-11 | 2017-10-27 | 江苏汇九齿轮有限公司 | A kind of Gear Processing well formula gas nitriding furnace |
-
2017
- 2017-04-11 CN CN201710232053.XA patent/CN106868447A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101194670B1 (en) * | 2010-05-17 | 2012-10-29 | 서울질화(주) | Nitriding furnace |
| CN202279855U (en) * | 2011-10-19 | 2012-06-20 | 人本集团有限公司 | Quick-cooling-type nitriding furnace |
| CN202688411U (en) * | 2012-07-16 | 2013-01-23 | 浙江长兴奇伟工业炉制造有限公司 | Full-sealed carburizing and nitriding system |
| CN203411599U (en) * | 2013-08-07 | 2014-01-29 | 湖南特科能热处理有限公司 | Well type carburizing and nitriding furnace |
| CN205443427U (en) * | 2016-03-31 | 2016-08-10 | 特科能(株洲)科技有限公司 | Nitriding furnace |
| CN205747928U (en) * | 2016-07-08 | 2016-11-30 | 上海汇森益发工业炉有限公司 | Well formula nitriding furnace |
| CN205919665U (en) * | 2016-07-29 | 2017-02-01 | 河南省天利工业炉有限公司 | Well formula carbonitriding stove |
| CN206591169U (en) * | 2017-04-11 | 2017-10-27 | 江苏汇九齿轮有限公司 | A kind of Gear Processing well formula gas nitriding furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819785A (en) * | 2019-11-13 | 2020-02-21 | 刘宏珠 | Regulation type gear heat treatment device for mining machinery |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170620 |
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| RJ01 | Rejection of invention patent application after publication |