CN108441624A - A kind of laser-impact technique improving wind power gear gas carburizing efficiency - Google Patents
A kind of laser-impact technique improving wind power gear gas carburizing efficiency Download PDFInfo
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- CN108441624A CN108441624A CN201810123906.0A CN201810123906A CN108441624A CN 108441624 A CN108441624 A CN 108441624A CN 201810123906 A CN201810123906 A CN 201810123906A CN 108441624 A CN108441624 A CN 108441624A
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- laser
- sample
- impact
- carburizing
- gas carburizing
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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
- C21D10/00—Modifying the physical properties by methods other than heat treatment or deformation
- C21D10/005—Modifying the physical properties by methods other than heat treatment or deformation by laser shock processing
-
- 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
- C23C8/02—Pretreatment of the material to be coated
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
The present invention relates to a kind of laser-impact techniques improving wind power gear gas carburizing efficiency, include the following steps：Carburizing steel processing is cut into sample；Sample is subjected to modifier treatment；Sample is put into laser impact intensified test platform and carries out laser-impact；Sample is put into gas carburizing multipurpose furnace, carburizing, quenching, temper are successively carried out.The beneficial effects of the invention are as follows：Laser-impact pretreatment is carried out before gas carburizing, specimen surface deforms upon reinforcing due to laser-impact effect, surface roughness is set to increase, microstructure Dislocations density increases, crystal grain refinement, form higher residual stress, in carburizing process, the defects of high density dislocation, provides more adsorption sites and diffusion admittance for carbon atom, to significantly improve gas carburizing efficiency, carburized layer thickness is improved, carburizing time is substantially shorter in the case where obtaining identical carburized layer depth, to energy saving, reduction production cost.
Description
Technical field
The present invention relates to a kind of laser-impact techniques improving wind power gear gas carburizing efficiency.
Background technology
At home and abroad in the Case hardening techniques of gear, Carburization Treatment because of its maturity of technology and with temperature control,
The development of the supporting technologies such as carbon-potential control is always the preferred technique that wind power gear is strengthened.Carburization process enables to military service zero
Part obtains the conventional fabrication processes on high rigidity surface and obdurability center portion, under normal circumstances, correctly completes carburizing, quenching and low
The part of temperature one group of heat treatment process of tempering can improve part bearing capacity and service life, ensure the part after carburizing：(1)
Bearing capacity is high, impact resistance is good.(2) anti-contact flexural fatigue ability is strong.(3) the features such as case hardness is high, wearability is good.
Regrettably, conventional Carburization Treatment comes with some shortcomings：(1) infiltration rate is too slow, and carburization process process is long.(2) low production efficiency.
Invention content
The technical problem to be solved by the present invention is to：Based on the above issues, the present invention provides a kind of raising wind power gear gas
The laser-impact technique of carburizing efficiency
The present invention solves a technical solution used by its technical problem：A kind of raising wind power gear gas carburizing effect
The laser-impact technique of rate, includes the following steps：
(1) carburizing steel processing is cut into sample.Sample is processed into the examination of M8 flute profiles by the preferred 20CrMnMo steel of carburizing steel
Sample.
(2) sample is subjected to modifier treatment, modifier treatment is first to be warming up to 860 DEG C of heat preservation 15min, then immediately by sample
It is put into cooling in oil, then is warming up to 670 DEG C of heat preservation 30min, taking-up is air-cooled to room temperature.
(3) sample being placed in laser impact intensified experiment porch, carries out laser-impact, setting optical maser wavelength is 1064nm,
Spot diameter φ 3mm, restraint layer are the uniform flow water layer of 2mm, and energy-absorbing layer is 100 μm of black tapes, and hot spot overlapping rate is
50%, pulse width 10ns~30ns, laser energy 3J~10J；
(4) sample after laser-impact is put into gas carburizing multipurpose furnace, is warming up to 800 DEG C, keep the temperature 2h, kept
0.4% carbon potential carries out carburizing, then heats to 910 DEG C, keeps carbon potential 1.15% to carry out the strong carburizings of 5h, then reduce carbon potential and arrive
0.68% carries out 4h diffusions, is then furnace-cooled to 825 DEG C, cools down again with stove after keeping the temperature 2h；It then takes out sample and is put into cooling in oil,
50 DEG C of oil temperature；Last 170 DEG C of heat preservations 5h, comes out of the stove air-cooled.
(5) sample is taken out, measures its section microhardness using HXD-1000TMC type microhardness testers after cooling, and
Measure its carburized layer depth.
The beneficial effects of the invention are as follows：
(1) deficiency that conventional gas carburizing efficiency is low, and the production cycle is grown is overcome；
(2) by the method for laser-impact, sample surface layer roughness first increases, and is conducive to the absorption of active atoms of carbon,
In addition microstructure Dislocations density increases, crystal grain refinement, and in carburizing engineering, the defects of high density dislocation provides for carbon atom
More adsorption sites and diffusion admittance significantly improve the efficiency of gas carburizing, improve carburized layer thickness；
(3) through laser-impact pretreatment+gas carburizing process, treated that specimen cross section hardness gradient is more gentle, infiltration layer
Densification, compared to conventional gas carburizing, this method obtains the carburizing time for requiring the carburized layer depth of thickness to need and is substantially shorter,
It is energy saving to reduce workpiece deformation, reduce production cost.
Description of the drawings
The following further describes the present invention with reference to the drawings.
Fig. 1 is the section microhardness comparison diagram of section microhardness and conventional process gas carburizing that embodiment 1 obtains；
Fig. 2 is the section microhardness comparison diagram of section microhardness and conventional process gas carburizing that embodiment 2 obtains；
Fig. 3 is the section microhardness comparison diagram of section microhardness and conventional process gas carburizing that embodiment 3 obtains；
Fig. 4 is carburized layer depth thickness comparison diagram under different technology conditions, wherein GC represents conventional gas carburizing, LSP1+GC
Embodiment 1 is represented, LSP2+GC represents embodiment 2, and LSP3+GC represents embodiment 3.
Specific implementation mode
Presently in connection with specific embodiment, the invention will be further described, following embodiment be intended to illustrate invention rather than
Limitation of the invention further.
Embodiment 1
(1) 20CrMnMo steel is processed into M8 flute profile samples；
(2) sample is subjected to modifier treatment, is first warming up to 860 DEG C of heat preservation 15min, is then immediately placed in sample cold in oil
But, then be warming up to 670 DEG C heat preservation 30min.Room temperature is air-cooled to after taking-up；
(3) sample is placed in the laser impact intensified test platform that equipment is YS05-C20A, setting optical maser wavelength is
1064nm, spot diameter φ 3mm, specimen surface is using black tape as energy-absorbing layer, and hot spot overlapping rate is 50%, pulse width
10ns, laser energy 3J carry out laser-impact to sample；
(6) sample after laser-impact is put into gas carburizing multipurpose furnace, is warming up to 800 DEG C, keep the temperature 2h, kept
0.4% carbon potential carries out carburizing, then heats to 910 DEG C, keeps carbon potential 1.15% to carry out the strong carburizings of 5h, then reduce carbon potential and arrive
0.68% carries out 4h diffusions, is then furnace-cooled to 825 DEG C, cools down again with stove after keeping the temperature 2h；It then takes out sample and is put into cooling in oil,
50 DEG C of oil temperature；Last 170 DEG C of heat preservations 5h, comes out of the stove air-cooled.
(7) sample after taking-up is air-cooled, its section microhardness is measured using HXD-1000TMC type microhardness testers, and
Measure its carburized layer depth.Section microhardness is shown in Fig. 1.
1 test result of embodiment：The carburized layer depth that laser-impact pretreatment+gas carburizing obtains is about 1.47mm, sees figure
1, as shown in Figure 4 the technique increase 0.24mm compared to the carburized layer depth for the 1.23mm that conventional gas carburizing is obtained, quite
19.5% is improved in carburizing efficiency, and hardness gradient is preferable.
Embodiment 2
(1) 20CrMnMo steel is processed into M8 flute profile samples；
(2) sample is subjected to modifier treatment, is first warming up to 860 DEG C of heat preservation 15min, is then immediately placed in sample cold in oil
But, then be warming up to 670 DEG C heat preservation 30min.Room temperature is air-cooled to after taking-up；
(3) sample is placed in the laser impact intensified test platform that equipment is YS05-C20A, setting optical maser wavelength is
1064nm, spot diameter φ 3mm, specimen surface is using black tape as energy-absorbing layer, and hot spot overlapping rate is 50%, pulse width
10ns, laser energy 10J carry out laser-impact to sample；
(4) sample is put into gas carburizing multipurpose furnace, is warming up to 800 DEG C, keep the temperature 2h, 0.4% carbon potential is kept to be oozed
Carbon then heats to 910 DEG C, and carbon potential 1.15% is kept to carry out the strong carburizings of 5h, then reduces carbon potential and carry out 4h diffusions to 0.68%, with
After be furnace-cooled to 825 DEG C, cool down again with stove after keeping the temperature 2h；It then takes out sample and is put into oil cooling, 50 DEG C of oil temperature；Last 170 DEG C
5h is kept the temperature, is come out of the stove air-cooled.
(5) sample after taking-up is air-cooled, its section microhardness is measured using HXD-1000TMC type microhardness testers, and
Measure its carburized layer depth.Section microhardness is shown in Fig. 2.
2 test result of embodiment：
The carburized layer depth that laser-impact processing+gas carburizing obtains is about 1.49mm, sees Fig. 2, as shown in Figure 4 the technique phase
The carburized layer depth of 1.23mm than being obtained in conventional gas carburization process increases 0.26mm, is equivalent to carburizing efficiency and improves
21.1%, and hardness gradient is preferable.
Embodiment 3
(1) 20CrMnMo steel is processed into M8 flute profile samples；
(2) sample is subjected to modifier treatment, is first warming up to 860 DEG C of heat preservation 15min, is then immediately placed in sample cold in oil
But, then be warming up to 670 DEG C heat preservation 30min.Room temperature is air-cooled to after taking-up；
(3) sample is placed in the laser impact intensified test platform that equipment is YS05-C20A, setting optical maser wavelength is
1064nm, spot diameter φ 3mm, specimen surface is using black tape as energy-absorbing layer, and hot spot overlapping rate is 50%, pulse width
30ns, laser energy 10J carry out laser-impact to sample；
(4) sample is put into gas carburizing multipurpose furnace, is warming up to 800 DEG C, keep the temperature 2h, 0.4% carbon potential is kept to be oozed
Carbon then heats to 910 DEG C, and carbon potential 1.15% is kept to carry out the strong carburizings of 5h, then reduces carbon potential and carry out 4h diffusions to 0.68%, with
After be furnace-cooled to 825 DEG C, cool down again with stove after keeping the temperature 2h；It then takes out sample and is put into oil cooling, 50 DEG C of oil temperature；Last 170 DEG C
5h is kept the temperature, is come out of the stove air-cooled.
(5) sample after taking-up is air-cooled, its section microhardness is measured using HXD-1000TMC type microhardness testers, and
Measure its carburized layer depth.Section microhardness is shown in Fig. 3.
3 test result of embodiment：The carburized layer depth that laser-impact pretreatment+gas carburizing obtains is about 1.58mm, sees figure
3, as shown in Figure 4 the technique increase 0.35mm compared to the carburized layer depth for the 1.23mm that conventional gas carburization process is obtained,
It is equivalent to carburizing efficiency and improves 28.5%, and hardness gradient is preferable.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine that its is technical according to right.
Claims (6)
1. a kind of laser-impact technique improving wind power gear gas carburizing efficiency, it is characterized in that：Include the following steps：
(1) carburizing steel processing is cut into flute profile sample；
(2) sample is subjected to modifier treatment；
(3) sample is placed in the laser impact intensified test platform that equipment is YS05-C20A, carries out laser-impact pretreatment；
(4) sample is put into gas carburizing multipurpose furnace, carries out carburizing, quenching, temper；
(5) sample is taken out, uses HXD-1000TMC type microhardness testers to measure section microhardness after cooling, and measure it and ooze
Carbon-coating is deep, and layer depth is 550HV with hardness0.05Subject to.
2. a kind of laser-impact technique improving wind power gear gas carburizing efficiency according to claim 1, it is characterized in that：
The preferred 20CrMnMo steel of carburizing steel, sample are processed into M8 flute profile samples in the step (1).
3. a kind of laser-impact technique improving wind power gear gas carburizing efficiency according to claim 1, it is characterized in that：
Modifier treatment is in the step (2)：860 DEG C of heat preservation 15min are first warming up to, sample is then immediately placed in cooling in oil,
It is warming up to 670 DEG C of heat preservation 30min again, room temperature is air-cooled to after taking-up.
4. a kind of laser-impact technique improving wind power gear gas carburizing efficiency according to claim 1, it is characterized in that：
Laser-impact processing is to be acted on by transparent restraint layer using the laser of high power density, short pulse in the step (3)
In the absorption protective coating of specimen surface coating, protective coating absorbs laser energy, and induction generates the plasma fortune of high intensity
Dynamic wave, acts on specimen surface.
5. a kind of laser-impact technique improving wind power gear gas carburizing efficiency according to claim 1, it is characterized in that：
It is 1064nm that laser-impact, which handles the optical maser wavelength, in the step (3), and pulse width is 10~30ns, and laser energy is
3~10J, light spot shape is round, a diameter of 3~5mm；Plasma stock wave acts on pending area, light according to certain path
Spot overlapping rate is 50%.
6. a kind of laser-impact technique improving wind power gear gas carburizing efficiency according to claim 1, it is characterized in that：
It is in the step (4)：It is put into sample after 400 DEG C of furnace temperature, is warming up to 800 DEG C, keeps the temperature 2h, 0.4% carbon potential is kept to be oozed
Carbon then heats to 910 DEG C, and carbon potential 1.15% is kept to carry out the strong carburizings of 5h, then reduces carbon potential and carry out 4h diffusions to 0.68%, with
After be furnace-cooled to 825 DEG C, cool down again with stove after keeping the temperature 2h；It then takes out sample and is put into oil cooling, 50 DEG C of oil temperature；Last 170 DEG C
5h is kept the temperature, is come out of the stove air-cooled.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810123906.0A CN108441624A (en) | 2018-02-07 | 2018-02-07 | A kind of laser-impact technique improving wind power gear gas carburizing efficiency |
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| CN201810123906.0A CN108441624A (en) | 2018-02-07 | 2018-02-07 | A kind of laser-impact technique improving wind power gear gas carburizing efficiency |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930591A (en) * | 2021-10-15 | 2022-01-14 | 常州大学 | Circulating quenching and fine-grain process for 20Cr2Ni4A steel |
| CN116219443A (en) * | 2022-12-29 | 2023-06-06 | 北京卫星制造厂有限公司 | Cooperative control method for high hardness and low brittleness of ultra-high strength stainless steel surface layer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319535A (en) * | 2015-07-03 | 2017-01-11 | 博世力士乐（北京）液压有限公司 | Heat treatment method used for gear shaft |
-
2018
- 2018-02-07 CN CN201810123906.0A patent/CN108441624A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106319535A (en) * | 2015-07-03 | 2017-01-11 | 博世力士乐（北京）液压有限公司 | Heat treatment method used for gear shaft |
Non-Patent Citations (4)
| Title |
|---|
| 李宝奎等: "工艺对20CrMnMo钢渗碳淬火畸变的影响", 《机械工程材料》 * |
| 李靖等: "激光冲击与渗碳复合工艺改善12CrNi3A钢磨损性能", 《强激光与离子束》 * |
| 王洪明: "《结构钢手册》", 31 August 1985, 河北科学技术出版社 * |
| 赵玉凯等: "齿轮的渗碳和淬火", 《热处理》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113930591A (en) * | 2021-10-15 | 2022-01-14 | 常州大学 | Circulating quenching and fine-grain process for 20Cr2Ni4A steel |
| CN116219443A (en) * | 2022-12-29 | 2023-06-06 | 北京卫星制造厂有限公司 | Cooperative control method for high hardness and low brittleness of ultra-high strength stainless steel surface layer |
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