CN108866306A - A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel - Google Patents
A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel Download PDFInfo
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- CN108866306A CN108866306A CN201810893086.3A CN201810893086A CN108866306A CN 108866306 A CN108866306 A CN 108866306A CN 201810893086 A CN201810893086 A CN 201810893086A CN 108866306 A CN108866306 A CN 108866306A
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- helical gear
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- passive helical
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- 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
- C21D9/28—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for plain shafts
-
- 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
-
- 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
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/60—Aqueous agents
-
- 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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- 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
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
-
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
Abstract
The present invention provides a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel, and passive helical gear shaft chemical element component and its mass percentage are：C：0.18%~0.22%, Si：0.25%~0.3%, Mn：0.5%~0.9%, Cr：1.2%~2.0%, Ti：0.02%~0.08%, P<0.04%, S<0.04%, the surplus is iron, by after anti-carburizi ng processing, carburizing, heat preservation, two-stage quenching, normalized treatment, tempering through over mechanical processing be made a kind of high intensity, high impact toughness, high tensile property the passive helical gear shaft of 20CrMnTi steel.
Description
Technical field
The present invention relates to the processing technique field of mechanical part, in particular to a kind of passive helical teeth of differential mechanism 20CrMnTi steel
The heat treatment process of wheel shaft.
Background technique
Recently as the development of national economy, axis class, the demand of passive helical gear axial workpiece are more and more, the service life
The economic benefit of machinery production producer is directly affected with bearing capacity, improves the carrying of axis class, passive helical gear axial workpiece
Ability and service life are more and more important in machinery industry.Common passive helical gear shaft, axis and carburizing part need to be by forging, cutting
After cutting, then the heat treatment of the techniques such as normalizing, carburizing and quenching and lonneal is carried out, having obtained superficial layer is hard carburized layer, the heart
Portion is the tissue with favorable comprehensive mechanical property, contains martensite, retained austenite and massive carbide in structure organization
Deng, these tissue and quenching generate residual stress have to the mechanical property such as hardness, torsional strength etc. of axis and carburizing part
Decisive action.20CrMnTi steel is widely used in manufacture axis class, quilt as a kind of typical low-alloy carbusintering steel in engineering
Dynamic helical gear axial workpiece.For these parts using very extensive, they are answered in cyclic loading, shock loading, very big contact
It power and works under conditions of being seriously worn, therefore it is required that surface is hard and wear-resisting, center portion is strong and tough, have high fatigue limit.
Many parts bear the effect of torsional load at work, and the components that these are turned round are usually also by the torque of alternation, this
Intensity, hardness and the toughness of a little components can't often reach requirement.Therefore, it is necessary to optimize 20CrMnTi steel heat treatment work
Skill, prepare high intensity, high impact toughness, high tensile property passive helical gear shaft.
Summary of the invention
The purpose of the present invention is to provide a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel, it is intended to
Prepare high intensity, high impact toughness, high tensile property passive helical gear shaft.
The present invention provides a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel, the 20CrMnTi steel
Passive helical gear shaft chemical element component and its mass percentage are：C：0.18%~0.22%, Si：0.25%~0.3%,
Mn：0.5%~0.9%, Cr：1.2%~2.0%, Ti：0.02%~0.08%, P<0.04%, S<0.04%, the surplus
For iron, the heat treatment process includes the following steps：
S1：Carburizing：The mode for using temperature heating hangs down passive helical gear shaft to 900-920 DEG C of gas carburizing stove heating
It directly stacks in furnace, is vented, keep the temperature 2.5h, kerosene 160-180 drop/minute is dripped when heat preservation, infiltration layer cools to 820 after reaching requirement
±10℃；
S2：Heat preservation：Keep the temperature soaking 2h；
S3：Two-stage quenching：Chlorination is dipped vertically by passive helical gear shaft at a temperature of between 810 to 830 degrees Celsius
In calcium solution, by passive helical gear shaft rapid cooling to after 190-220 DEG C, passive helical gear shaft is warming up to 750-800 DEG C, is protected
Warm 1h, then passive helical gear shaft is immersed in liquid nitrogen and is quenched to -20 DEG C -0 DEG C；
S4：It is cleaned and dried：Spray cleaning solution cleaning is carried out to passive helical gear shaft, washes away the chlorination on passive helical gear shaft surface
It is dry after calcium solution, then protection by spraying aqueous preventives liquid；
S5：Normalized treatment；
S6：Through the passive helical gear shaft of over mechanical processing finished product after tempering.
As a further improvement of the present invention, the calcium chloride cool time is 4-8s in step S3, and the Quenching in liquid nitrogen time is 10-
20s。
As a further improvement of the present invention, the calcium chloride cool time is 6s in step S3, and the Quenching in liquid nitrogen time is 15s.
As a further improvement of the present invention, the axis surface element matrix of the passive helical gear shaft of 20CrMnTi steel is superfine needle
Shape martensite, for residual austenite content 2.3~3.4%, center portion matrix is thinner lath martensite, residual austenite content
10~15%.
As a further improvement of the present invention, the crystal grain of the retained austenite recrystallization of the passive helical gear shaft of 20CrMnTi steel
Spending rank is 14-16 grades.
Compared with prior art, the invention has the advantages that：
1. two-stage quenching technical of the invention is pressed for the first time using calcium chloride solution as quenching medium, rapidly make passive helical gear
Axis cools, and the austenite on surface layer is made to change martensite, and the volume expansion on surface layer forms pressure on the surface layer of passive helical gear shaft
Stress reduces the generation of hardening flaw, then makes residual austenite in passive helical gear shaft by way of being warming up to 750 DEG C -800 DEG C
The recrystallization of body further refines passive helical gear shaft interior tissue, finally using Quenching in liquid nitrogen to subzero, passive helical teeth
The retained austenite of wheel shaft is further converted into martensite, the axis surface element of the passive helical gear shaft of final 20CrMnTi steel obtained
Residual austenite content significantly improves passive helical gear shaft hardness, intensity, impact flexibility and tensile property 2.3~3.4%.
2. the present invention, which uses, first passes through this maximum quenching medium of cooling velocity at 600 DEG C of calcium chloride solution to passive oblique
Gear shaft carries out short time pole cold quenching, refines metal grain, by being quenched again using the liquid nitrogen further long period after recrystallization
Fire is achieved in that the wheel portion matrix of passive helical gear shaft is superfine acicular martensite, and center portion matrix is thinner lath geneva
Body, the grain size of retained austenite reach higher level, and crystal grain is tiny, and tissue line succession is high, and yield strength is big, Ji Nengti
The intensity of high passive helical gear shaft can improve the tensile property and toughness of passive helical gear shaft again.
3. on the one hand the temperature-rise period in two-stage quenching technical of the present invention recrystallizes retained austenite, on the other hand
A part of martensite transfor mation is austenite, increases the content of retained austenite in passive helical gear shaft, especially increases the heart
The content of the retained austenite in portion, the residual austenite content of wheel portion is 2.3~3.4%, the content of the retained austenite of center portion
In residual austenite content 10~15%, the axis surface element of the passive helical gear shaft of this structure is with higher hard
Degree, wearability and hot tearing performance resistant to high temperatures, center portion impact flexibility with higher and shock resistance.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with specific embodiment.Obviously, described
Embodiment be only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to guarantor of the present invention
The range of shield.
The present invention discloses a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel, specific embodiments
It is as follows.
Embodiment 1
A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel, the passive helical gear axiation of 20CrMnTi steel
It learns elemental composition and its mass percentage is：C：0.18%, Si：0.25%, Mn：0.5%, Cr：1.2%, Ti：0.02%, P
<0.04%, S<0.04%, the surplus is iron, and the heat treatment process includes the following steps：
S1：Carburizing：The mode for using temperature heating hangs down passive helical gear shaft to 900-920 DEG C of gas carburizing stove heating
It directly stacks in furnace, is vented, keep the temperature 2.5h, kerosene 160-180 drop/minute is dripped when heat preservation, infiltration layer cools to 820 after reaching requirement
±10℃；
S2：Heat preservation：Keep the temperature soaking 2h；
S3：Two-stage quenching：Chlorination is dipped vertically by passive helical gear shaft at a temperature of between 810 to 830 degrees Celsius
In calcium solution, after passive helical gear shaft rapid cooling 4s to 190-220 DEG C, passive helical gear shaft is warming up to 750-800 DEG C,
1h is kept the temperature, then passive helical gear shaft is immersed and quenches 10s to -20 DEG C -0 DEG C in liquid nitrogen；
S4：It is cleaned and dried：Spray cleaning solution cleaning is carried out to passive helical gear shaft, washes away the chlorination on passive helical gear shaft surface
It is dry after calcium solution, then protection by spraying aqueous preventives liquid；
S5：Normalized treatment；
S6：Through the passive helical gear shaft of over mechanical processing finished product after tempering.
The axis surface element matrix of the passive helical gear shaft of 20CrMnTi steel is superfine acicular martensite after testing, remaining difficult to understand
Family name's body content is 3.4%, and center portion matrix is thinner lath martensite, and residual austenite content is in 10%, 20CrMnTi steel quilt
The grain size number of the retained austenite recrystallization of dynamic helical gear shaft is 15 grades.
Embodiment 2
A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel, the passive helical gear axiation of 20CrMnTi steel
It learns elemental composition and its mass percentage is：C：0.22%, Si：0.3%, Mn：0.9%, Cr：2.0%, Ti：0.08%, P<
0.04%, S<0.04%, the surplus is iron, and the heat treatment process includes the following steps：
S1：Carburizing：The mode for using temperature heating, to 900-920 DEG C of gas carburizing stove heating, by passive helical gear shaft
Vertical pile enters in furnace, and exhaust keeps the temperature 2.5h, and kerosene 160-180 drop/minute is dripped when heat preservation, and infiltration layer cools to after reaching requirement
820±10℃；
S2：Heat preservation：Keep the temperature soaking 2h；
S3：Two-stage quenching：Chlorination is dipped vertically by passive helical gear shaft at a temperature of between 810 to 830 degrees Celsius
In calcium solution, after passive helical gear shaft rapid cooling 8s to 190-220 DEG C, passive helical gear shaft is warming up to 750-800 DEG C,
1h is kept the temperature, then passive helical gear shaft is immersed and quenches 20s to -20 DEG C -0 DEG C in liquid nitrogen；
S4：It is cleaned and dried：Spray cleaning solution cleaning is carried out to passive helical gear shaft, washes away the chlorination on passive helical gear shaft surface
It is dry after calcium solution, then protection by spraying aqueous preventives liquid；
S5：Normalized treatment；
S6：Through the passive helical gear shaft of over mechanical processing finished product after tempering.
The axis surface element matrix of the passive helical gear shaft of 20CrMnTi steel is superfine acicular martensite after testing, residual
Remaining austenite content is 2.3%, and center portion matrix is thinner lath martensite, and residual austenite content is in 15%, 20CrMnTi
The grain size number of the retained austenite recrystallization of the passive helical gear shaft of steel is 14 grades.
Embodiment 3
A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel, the passive helical gear axiation of 20CrMnTi steel
It learns elemental composition and its mass percentage is：C：0.20%, Si：0.28%, Mn：0.7%, Cr：1.6%, Ti：0.06%, P
<0.04%, S<0.04%, the surplus is iron, and the heat treatment process includes the following steps：
S1：Carburizing：The mode for using temperature heating, to 900-920 DEG C of gas carburizing stove heating, by passive helical gear shaft
Vertical pile enters in furnace, and exhaust keeps the temperature 2.5h, and kerosene 160-180 drop/minute is dripped when heat preservation, and infiltration layer cools to after reaching requirement
820±10℃；
S2：Heat preservation：Keep the temperature soaking 2h；
S3：Two-stage quenching：Chlorination is dipped vertically by passive helical gear shaft at a temperature of between 810 to 830 degrees Celsius
In calcium solution, after passive helical gear shaft rapid cooling 6s to 190-220 DEG C, passive helical gear shaft is warming up to 750-800 DEG C,
1h is kept the temperature, then passive helical gear shaft is immersed and quenches 15s to -20 DEG C -0 DEG C in liquid nitrogen；
S4：It is cleaned and dried：Spray cleaning solution cleaning is carried out to passive helical gear shaft, washes away the chlorination on passive helical gear shaft surface
It is dry after calcium solution, then protection by spraying aqueous preventives liquid；
S5：Normalized treatment；
S6：Through the passive helical gear shaft of over mechanical processing finished product after tempering.
After testing, the axis surface element matrix of the passive helical gear shaft of 20CrMnTi steel is superfine acicular martensite, remaining
Austenite content is 3.2%, and center portion matrix is thinner lath martensite, and residual austenite content is in 12%, 20CrMnTi steel
The grain size number of the retained austenite recrystallization of passive helical gear shaft is 16 grades.
Table 1 is the hardness and mechanical experimental results of passive helical gear shaft.
The performance indicator of the passive helical gear shaft of table 1
Embodiment 1-3's the result shows that, passive helical gear shaft provided by the invention by calcium chloride solution it is this at 600 DEG C
When the maximum quenching medium of cooling velocity to passive helical gear shaft carry out short time pole cold quenching, refine metal grain, by tying again
Again using the further long period quenching of liquid nitrogen after crystalline substance, it is achieved in that the wheel portion matrix of passive helical gear shaft is superfine needle-shaped horse
Family name's body, center portion matrix are thinner lath martensite, and the grain size of retained austenite reaches higher level, and crystal grain is tiny, tissue
Putting in order property is high, and yield strength is big, can improve the intensity of passive helical gear shaft but also improve the stretching of passive helical gear shaft
Performance and toughness, therefore passive helical gear shaft of the invention has high rigidity, high tensile/yield strength and high impact flexibility.
Above to a kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel provided by the present invention.Herein
In apply specific embodiment principle and implementation of the present invention are described, the explanation of above example is only intended to
It facilitates the understanding of the method and its core concept of the invention.It should be pointed out that for those skilled in the art,
Without departing from the principles of the invention, can be with several improvements and modifications are made to the present invention, these improvement and modification are also fallen
Enter in the protection scope of the claims in the present invention.
Claims (5)
1. a kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel, it is characterised in that：The 20CrMnTi steel
Passive helical gear shaft chemical element component and its mass percentage are：C：0.18%~0.22%, Si：0.25%~0.3%,
Mn：0.5%~0.9%, Cr：1.2%~2.0%, Ti：0.02%~0.08%, P<0.04%, S<0.04%, the surplus
For iron, the heat treatment process includes the following steps：
S1：Carburizing：The mode for using temperature heating vertically folds passive helical gear shaft to 900-920 DEG C of gas carburizing stove heating
It is put into furnace, is vented, keep the temperature 2.5h, kerosene 160-180 drop/minute is dripped when heat preservation, infiltration layer cools to 820 ± 10 after reaching requirement
℃；
S2：Heat preservation：Keep the temperature soaking 2h；
S3：Two-stage quenching：It is molten to passive helical gear shaft is dipped vertically into calcium chloride at a temperature of between 810 to 830 degrees Celsius
In liquid, by passive helical gear shaft rapid cooling to after 190-220 DEG C, passive helical gear shaft is warming up to 750-800 DEG C, heat preservation
1h, then passive helical gear shaft is immersed in liquid nitrogen and is quenched to -20 DEG C -0 DEG C；
S4：It is cleaned and dried：Spray cleaning solution cleaning is carried out to passive helical gear shaft, the calcium chloride for washing away passive helical gear shaft surface is molten
It is dry after liquid, then protection by spraying aqueous preventives liquid；
S5：Normalized treatment；
S6：Through the passive helical gear shaft of over mechanical processing finished product after tempering.
2. a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel according to claim 1, feature
It is：The calcium chloride cool time is 4-8s in step S3, and the Quenching in liquid nitrogen time is 10-20s.
3. a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel according to claim 1, feature
It is：The calcium chloride cool time is 6s in step S3, and the Quenching in liquid nitrogen time is 15s.
4. a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel according to claim 1, feature
It is：The axis surface element matrix of the passive helical gear shaft of 20CrMnTi steel is superfine acicular martensite, and retained austenite contains
Amount is 2.3~3.4%, and center portion matrix is thinner lath martensite, and residual austenite content is 10~15%.
5. a kind of heat treatment process of passive helical gear shaft of differential mechanism 20CrMnTi steel according to claim 1, feature
It is：The grain size number of the retained austenite recrystallization of the passive helical gear shaft of 20CrMnTi steel is 14-16 grades.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810893086.3A CN108866306A (en) | 2018-08-07 | 2018-08-07 | A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810893086.3A CN108866306A (en) | 2018-08-07 | 2018-08-07 | A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel |
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| Publication Number | Publication Date |
|---|---|
| CN108866306A true CN108866306A (en) | 2018-11-23 |
Family
ID=64318336
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810893086.3A Pending CN108866306A (en) | 2018-08-07 | 2018-08-07 | A kind of heat treatment process of the passive helical gear shaft of differential mechanism 20CrMnTi steel |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710714A (en) * | 2012-12-07 | 2014-04-09 | 厦门真冈热处理有限公司 | Automobile gearbox gear carburizing and quenching heat treatment method |
| CN105648446A (en) * | 2014-11-14 | 2016-06-08 | 重庆春顾机械制造有限公司 | Heat treatment process for 20CrMnTi gear steel |
| CN105734251A (en) * | 2014-12-12 | 2016-07-06 | 重庆晨宇机床制造有限公司 | Gear heat treatment process |
| CN107299204A (en) * | 2017-03-31 | 2017-10-27 | 西南大学 | A kind of processing method of raising 20CrMnMo hardness of steel |
| CN107620006A (en) * | 2017-09-29 | 2018-01-23 | 太仓市三源机电有限公司 | A kind of material of new making gear |
-
2018
- 2018-08-07 CN CN201810893086.3A patent/CN108866306A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710714A (en) * | 2012-12-07 | 2014-04-09 | 厦门真冈热处理有限公司 | Automobile gearbox gear carburizing and quenching heat treatment method |
| CN105648446A (en) * | 2014-11-14 | 2016-06-08 | 重庆春顾机械制造有限公司 | Heat treatment process for 20CrMnTi gear steel |
| CN105734251A (en) * | 2014-12-12 | 2016-07-06 | 重庆晨宇机床制造有限公司 | Gear heat treatment process |
| CN107299204A (en) * | 2017-03-31 | 2017-10-27 | 西南大学 | A kind of processing method of raising 20CrMnMo hardness of steel |
| CN107620006A (en) * | 2017-09-29 | 2018-01-23 | 太仓市三源机电有限公司 | A kind of material of new making gear |
Non-Patent Citations (1)
| Title |
|---|
| 傅宇东等: "强烈淬火对20CrMnTi钢组织与性能的影响", 《金属热处理》 * |
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