CN107034342A - A kind of heat treatment method of spiral bevel gear - Google Patents
A kind of heat treatment method of spiral bevel gear Download PDFInfo
- Publication number
- CN107034342A CN107034342A CN201710436892.3A CN201710436892A CN107034342A CN 107034342 A CN107034342 A CN 107034342A CN 201710436892 A CN201710436892 A CN 201710436892A CN 107034342 A CN107034342 A CN 107034342A
- Authority
- CN
- China
- Prior art keywords
- bevel gear
- spiral bevel
- heat treatment
- charging basket
- treatment
- 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.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
- C21D1/20—Isothermal quenching, e.g. bainitic hardening
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like
-
- 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
- C23C8/20—Carburising
- C23C8/22—Carburising of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gears, Cams (AREA)
- Heat Treatment Of Articles (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Operate the invention discloses a kind of heat treatment method of spiral bevel gear, including dress basket, enter the steps such as cleaning treatment after stokehold cleaning treatment, Carburization Treatment, means of isothermal quenching, quenching, temper, air cooling processing.The heat treatment method of this spiral bevel gear uses the mode of heating that ladder-elevating temperature is incubated due to Carburization Treatment, therefore can reduce the temperature difference at each position of spiral bevel gear, eliminates the generation of machining stress, reduce because heat it is too fast caused by spiral bevel gear deform；Due to using means of isothermal quenching after Carburization Treatment, therefore constant oil sump temperature ensures that spiral bevel gear cooling is uniform, reduce the deformation of spiral bevel gear, realize the heat treatment deformation amount of reduction spiral bevel gear, ensure higher spiral bevel gear heat treatment yield rate.
Description
Technical field
The present invention relates to a kind of heat treatment method of gear, specifically a kind of heat treatment method of spiral bevel gear belongs to
Gear Manufacturing Technology field.
Background technology
Gear drive is most widely used a kind of type of belt drive in machine driving, and because it has, gearratio is accurate, efficiency
The features such as height, compact conformation, reliable operation, long lifespan, thus the application in modern machine and instrument is extremely wide.
Gear, as gear-driven base components, is that with teeth can continuously engage transmits motion and the machinery of power on wheel rim
The processability of product structure of element, wherein straight spur gear is best, most easy processing, can be using any tooth Profile Machining method processing
Wheel portion, and for spiral bevel gear (i.e. helical bevel gear), because its tooth distribution is in the surface of a cone and tooth form
From holding the circular shape that is gradually reduced to small end greatly, therefore spiral bevel gear processing is more complicated one kind in Gear Processing.
Spiral bevel gear is usually used in motion and power transmission between two concurrent aceses, in various machine drivings, with spiral
The transmission efficiency of bevel gear is highest, has very big economic benefit, and spiral to all kinds of transmissions especially high-power transmission
The driving member transmission most save space that needs when bevel gear transmits equal moment of torsion, at the same spiral bevel gear have gearratio it is stable,
The characteristics of reliable operation, long lifespan.
Existing spiral bevel gear manufacture method generally includes blanking, forging and stamping, rough turn lathe, preposition heat treatment, smart car, milling
The processes such as tooth, rearmounted heat treatment, roll flute, in rearmounted heat treatment step be make spiral bevel gear have excellent wearability, compared with
High anti-contact fatigue and the critical process of flexural fatigue resistance energy and long lifespan, the rearmounted heat treatment of current spiral bevel gear are normal
The practice of rule is that, using the tempering of production line of mesh belt furnace carburizing and quenching, this conventional method has the change of the spiral bevel gear each several part temperature difference
There is the larger defect of deflection in the problem of changing larger, the spiral bevel gear in turn resulting in processing, thus cause heat treatment after into
Product rate is relatively low.
The content of the invention
In view of the above-mentioned problems, the present invention provides a kind of heat treatment method of spiral bevel gear, it is possible to achieve reduction spiral umbrella
The gear each several part temperature difference, and then realize the heat treatment deformation amount of reduction spiral bevel gear, ensure at higher spiral bevel gear heat
Manage yield rate.
To achieve the above object, the heat treatment method of this spiral bevel gear comprises the following steps：
A. dress basket operation：Normalized treatment is crossed and the spiral bevel gear semi-finished product after rough turn, mill teeth pile up neat loading heat
Handle in charging basket；
B. stokehold cleaning treatment is entered：The heat treatment charging basket for piling up spiral bevel gear semi-finished product is integrally immersed in service sink
Spiral bevel gear is cleaned, spiral bevel gear remained on surface dirt is removed；
C. Carburization Treatment：The heat treatment charging basket entirety entirety completed into stokehold cleaning treatment is inserted in carburizer, controlled
Carburizer furnace temperature carries out the mode of heating of ladder-elevating temperature insulation；
D. means of isothermal quenching：The heat treatment charging basket for completing Carburization Treatment is integrally inserted into progress isothermal in cooling oil sump to quench
Fire cooling；
E. cleaning treatment after quenching：The heat treatment charging basket for completing Quenching Treatment is integrally immersed in service sink to spiral bevel gear
Wheel is cleaned, and removes spiral bevel gear remained on surface greasy dirt；
F. temper：The heat treatment charging basket entirety entirety for completing cleaning treatment after quenching is inserted in tempering furnace to spiral
Bevel gear carries out temper；
G. air cooling is handled：Cool down the overall taking-up of the heat treatment charging basket for completing temper and in atmosphere.
In scheme as a further improvement on the present invention, described step c propane is filled with inside carburizer in carburizing process
Gas.
Ladder heating and heat preservation mode of heating is specifically included in scheme as a further improvement on the present invention, described step c
Following steps：1. 800~830 DEG C of samming 10min；2. it is 850~890 DEG C strong to ooze insulation 20min；3. 900 DEG C of diffusion insulations
15min；4. 820~830 DEG C quench samming 30min.
The oil temperature of cooling oil sump is 135~145 DEG C in scheme as a further improvement on the present invention, described step d.
Temper temperature is 185~195 DEG C, time in scheme as a further improvement on the present invention, described step f
For 180min.
Scheme as a further improvement on the present invention, described heat treatment charging basket has the compartmented knot of the hanging grid of multilayer
Gear positioning mechanism is equipped with structure, each compartment, this finished product of spiral bevel gear is respectively implanted in each compartment.
To heat treatment during scheme as a further improvement on the present invention, described step b and step e cleaning treatment
Charging basket carries out vibration operation.
Compared with prior art, because Carburization Treatment is incubated using ladder-elevating temperature in the heat treatment method of this spiral bevel gear
Mode of heating, therefore can reduce the temperature difference at each position of spiral bevel gear, eliminate the generation of machining stress, reduce because heated
Spiral bevel gear is deformed caused by fast；Due to using means of isothermal quenching, therefore constant oil sump temperature after Carburization Treatment
Ensure that spiral bevel gear cooling is uniform, the deformation of reduction spiral bevel gear, the heat treatment deformation amount of realization reduction spiral bevel gear,
Ensure higher spiral bevel gear heat treatment yield rate.
Embodiment
The heat treatment method of this spiral bevel gear comprises the following steps：
A. dress basket operation：Normalized treatment is crossed and the spiral bevel gear semi-finished product after rough turn, mill teeth pile up neat loading heat
Handle in charging basket；
B. stokehold cleaning treatment is entered：The heat treatment charging basket for piling up spiral bevel gear semi-finished product is integrally immersed in service sink
Spiral bevel gear is cleaned, spiral bevel gear remained on surface dirt is removed；
C. Carburization Treatment：The heat treatment charging basket entirety entirety completed into stokehold cleaning treatment is inserted in carburizer, controlled
Carburizer furnace temperature carries out the mode of heating of ladder-elevating temperature insulation；
D. means of isothermal quenching：The heat treatment charging basket for completing Carburization Treatment is integrally inserted into progress isothermal in cooling oil sump to quench
Fire cooling；
E. cleaning treatment after quenching：The heat treatment charging basket for completing Quenching Treatment is integrally immersed in service sink to spiral bevel gear
Wheel is cleaned, and removes spiral bevel gear remained on surface greasy dirt；
F. temper：The heat treatment charging basket entirety entirety for completing cleaning treatment after quenching is inserted in tempering furnace to spiral
Bevel gear carries out temper；
G. air cooling is handled：Cool down the overall taking-up of the heat treatment charging basket for completing temper and in atmosphere.
In order to reduce the deformation of spiral bevel gear form of gear tooth, improve case hardness, scheme as a further improvement on the present invention,
In described step c propane gas is filled with inside carburizer in carburizing process.
Because part is in heating process, not only thermal stress can produce distortion, while distortion can also be produced by discharging internal stress,
And firing rate is a key factor for influenceing spiral bevel gear stress to produce, the temperature difference at each position of spiral bevel gear more it is big then
Stress is also bigger, therefore in order to reduce the deformation of spiral bevel gear form of gear tooth, scheme, described as a further improvement on the present invention
Step c in ladder heating and heat preservation mode of heating specifically include following steps：1. 800~830 DEG C of samming 10min；850 2.~
It is 890 DEG C strong to ooze insulation 20min；3. 900 DEG C of diffusions are incubated 15min；4. 820~830 DEG C quench samming 30min.
In order to reduce the heat treatment deformation of spiral bevel gear, scheme, described step d as a further improvement on the present invention
The oil temperature of middle cooling oil sump is 135~145 DEG C.
In order to ensure the case hardness of spiral bevel gear, scheme as a further improvement on the present invention, in described step f
Temper temperature is 185~195 DEG C, and the time is 180min.
In order to further prevent spiral bevel gear mutual deformation of colliding with heat treatment process, it is used as the present invention's further
Improvement project, described heat treatment charging basket have be equipped with the compartmented structure of hanging grid of multilayer, each compartment gear determine
Position mechanism, this finished product of spiral bevel gear is respectively implanted in each compartment.
In order to shorten scavenging period, prevent long interval time from causing temperature change big, the further of the present invention is used as
Vibration operation is carried out to heat treatment charging basket during improvement project, described step b and step e cleaning treatment.
Because Carburization Treatment uses the mode of heating that ladder-elevating temperature is incubated in the heat treatment method of this spiral bevel gear, therefore
Can reduce the temperature difference at each position of spiral bevel gear, eliminate the generation of machining stress, reduce because heat it is too fast caused by spiral
Bevel gear is deformed；Due to using means of isothermal quenching after Carburization Treatment, therefore constant oil sump temperature ensures spiral bevel gear
Cooling is uniform, reduces the deformation of spiral bevel gear, realizes the heat treatment deformation amount of reduction spiral bevel gear, ensures higher spiral
Bevel gear is heat-treated yield rate.
Claims (7)
1. a kind of heat treatment method of spiral bevel gear, it is characterised in that comprise the following steps：
A. dress basket operation：Normalized treatment is crossed and the spiral bevel gear semi-finished product after rough turn, mill teeth pile up neat loading heat treatment
In charging basket；
B. stokehold cleaning treatment is entered：The heat treatment charging basket for piling up spiral bevel gear semi-finished product is integrally immersed in service sink to spiral shell
Rotation bevel gear is cleaned, and removes spiral bevel gear remained on surface dirt；
C. Carburization Treatment：The heat treatment charging basket entirety entirety completed into stokehold cleaning treatment is inserted in carburizer, carburizing is controlled
Stove furnace temperature carries out the mode of heating of ladder-elevating temperature insulation；
D. means of isothermal quenching：The heat treatment charging basket for completing Carburization Treatment is integrally inserted into progress isothermal hardening in cooling oil sump cold
But；
E. cleaning treatment after quenching：The heat treatment charging basket for completing Quenching Treatment is integrally immersed in service sink to enter spiral bevel gear
Row cleaning, removes spiral bevel gear remained on surface greasy dirt；
F. temper：The heat treatment charging basket entirety entirety for completing cleaning treatment after quenching is inserted in tempering furnace to spiral bevel gear
Wheel carries out temper；
G. air cooling is handled：Cool down the overall taking-up of the heat treatment charging basket for completing temper and in atmosphere.
2. the heat treatment method of spiral bevel gear according to claim 1, it is characterised in that carburizing in described step c
Propane gas is filled with furnace interior carburizing process.
3. the heat treatment method of spiral bevel gear according to claim 2, it is characterised in that ladder in described step c
Heating and heat preservation mode of heating specifically includes following steps：1. 800~830 DEG C of samming 10min；2. 850~890 DEG C ooze insulation by force
20min；3. 900 DEG C of diffusions are incubated 15min；4. 820~830 DEG C quench samming 30min.
4. the heat treatment method of spiral bevel gear according to claim 3, it is characterised in that cooled down in described step d
The oil temperature of oil sump is 135~145 DEG C.
5. the heat treatment method of spiral bevel gear according to claim 4, it is characterised in that be tempered in described step f
Treatment temperature is 185~195 DEG C, and the time is 180min.
6. the heat treatment method of the spiral bevel gear according to claim 1 to 5 any claim, it is characterised in that institute
The heat treatment charging basket stated, which has in the compartmented structure of hanging grid of multilayer, each compartment, is equipped with gear positioning mechanism, spiral
This finished product of bevel gear is respectively implanted in each compartment.
7. the heat treatment method of the spiral bevel gear according to claim 1 to 5 any claim, it is characterised in that institute
Vibration operation is carried out to heat treatment charging basket during the step b and step e cleaning treatment that state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436892.3A CN107034342A (en) | 2017-06-12 | 2017-06-12 | A kind of heat treatment method of spiral bevel gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710436892.3A CN107034342A (en) | 2017-06-12 | 2017-06-12 | A kind of heat treatment method of spiral bevel gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107034342A true CN107034342A (en) | 2017-08-11 |
Family
ID=59541905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710436892.3A Pending CN107034342A (en) | 2017-06-12 | 2017-06-12 | A kind of heat treatment method of spiral bevel gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107034342A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994554A (en) * | 2018-07-20 | 2018-12-14 | 江麓机电集团有限公司 | A kind of high hard high-precision low-carbon alloy steel ring gear machining method |
| CN113862433A (en) * | 2021-09-26 | 2021-12-31 | 汉德车桥(株洲)齿轮有限公司 | Spiral bevel gear grain refining control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000144371A (en) * | 1998-11-13 | 2000-05-26 | Isuzu Motors Ltd | Carburization and quenching |
| CN104451705A (en) * | 2014-11-06 | 2015-03-25 | 无锡市百顺机械厂 | Gear manufacturing process |
| CN106048192A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of spiral bevel gear for hay mower |
| CN106048191A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of spiral bevel gear for industrial robot |
| CN106048195A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of GCr15 thin-wall conical ring |
-
2017
- 2017-06-12 CN CN201710436892.3A patent/CN107034342A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000144371A (en) * | 1998-11-13 | 2000-05-26 | Isuzu Motors Ltd | Carburization and quenching |
| CN104451705A (en) * | 2014-11-06 | 2015-03-25 | 无锡市百顺机械厂 | Gear manufacturing process |
| CN106048192A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of spiral bevel gear for hay mower |
| CN106048191A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of spiral bevel gear for industrial robot |
| CN106048195A (en) * | 2016-08-23 | 2016-10-26 | 常州新区河海热处理工程有限公司 | Heat treatment technology for reducing deformation of GCr15 thin-wall conical ring |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108994554A (en) * | 2018-07-20 | 2018-12-14 | 江麓机电集团有限公司 | A kind of high hard high-precision low-carbon alloy steel ring gear machining method |
| CN113862433A (en) * | 2021-09-26 | 2021-12-31 | 汉德车桥(株洲)齿轮有限公司 | Spiral bevel gear grain refining control method |
| CN113862433B (en) * | 2021-09-26 | 2023-03-28 | 汉德车桥(株洲)齿轮有限公司 | Spiral bevel gear grain refining control method |
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Application publication date: 20170811 |
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