CN208071777U - A kind of laser for bearing of wind power generator surface melts surface modification device again - Google Patents
A kind of laser for bearing of wind power generator surface melts surface modification device again Download PDFInfo
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- CN208071777U CN208071777U CN201721701493.7U CN201721701493U CN208071777U CN 208071777 U CN208071777 U CN 208071777U CN 201721701493 U CN201721701493 U CN 201721701493U CN 208071777 U CN208071777 U CN 208071777U
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- laser
- bearing
- wind power
- power generator
- melts
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Abstract
The utility model discloses a kind of laser for bearing of wind power generator surface to melt surface modification device again, device includes laser controller, laser generator, laser processing platform, laser focalizer, cooling medium Storage Box, uniaxial mobile platform and argon gas air supply system, the present apparatus realizes that laser melts again and realizes micron crystalline substance, nanometer crystal microstructure, effectively promotes bearing parts case hardness and wearability；It passes sequentially through and cooling water, dry ice, liquid nitrogen reinforcement cooling is added, can effectively control crystallization rate, and then control grain size and growth tendency；Laser melts method again realizes kind carbide, the microscopic appearance of alloy cpd and dispersity, effectively promotes the corrosion resistance of bearing steel material；Features simple structure, it is adaptable to workpiece, it can be used in various metals laser processing occasion.
Description
Technical field
The utility model belongs to field of metal surface treatment technology, especially a kind of for bearing of wind power generator surface
Laser melts surface modification device again.
Background technology
Bearing is the strategic materials of national economy, the Key basic parts of equipment manufacture.Bearing belongs to the core of Wind turbines
Heart parts.The range of wind power bearing is related to from blade, the main shaft bearing used with yaw.Used in gear-box and generator
High-speed bearing.Therefore, the requirement of bearing parts material is very stringent.In this regard, not requiring nothing more than bearing material has sufficient intensity
And bearing capacity, also it is required to operate steadily, and lubricate, anti-corrosion and favorable sealing property.It requires to last a long time simultaneously (general
It is required that 20 years).But wind-powered electricity generation bearing, by the abominable of its use environment, installation, maintenance inconvenience causes on the whole
Bearing is position most weak in wind-powered machine.Especially suitable for the big bearing on gear-box main shaft and generator be cause it is certain
One of the major failure of model Wind turbines.Therefore, especially to carry out preferred, the quality of materials of manufacture bearing parts material therefor
Control and the research of material processing technique.
The quality of material is to determine the most important factor of wind power bearing, and China's wind power bearing and external gap, material is main
Want factor.Carbide homogeneity, net carbide control, Control and Inclusion Removal etc. still have larger gap, this results in the country
Wind power bearing quality inadequate natural endowment, service life, reliability and the inferior external product of consistency of wind power bearing.China's bearing industry
In wind power bearing design, unripe selection method and experience, there are larger blindness in terms of selection, usually because of selection
It is improper to cause heavy losses.
Fatigue flake is the common failure mode in wind power bearing surface.It is primarily referred to as contacting for rolling bearing tired
Labor.Under the repeated action of contact stress, rolling surface metal is in from metallic matrix on rolling bearing lasso each rolling element surface
Dotted or referred to as fatigue flake the phenomenon that scale off.Spot corrosion is also due to fatigue of materials and causes a kind of fatigue phenomenon, but
Geomery very little will form fatigue flake after spot corrosion extension.The morphological feature of fatigue flake generally have certain depth and
Area, it is in rough squamous to make rolling surface, has sharp ditch angle usually to manifest the beachwear line of Fatigue feature
Road generating unit mainly appears on the rolling surface of lasso and rolling element.
According to mechanism and major influence factors that fatigue generates, precautionary measures can be targetedly proposed.Such as to surface
Fatigue caused by the damage of origin, can be by carrying out surface Hardening Treatment, currently, being commonly surface-treated and changing to piece surface
Property technology has thermo-chemical treatment, built-up welding, plating, chemical plating, thermal spraying and plasma spraying, laser surface processing etc..Laser table
Face processing technology has laser transformation hardening, laser melting coating, laser shock peening, laser alloying, laser remolten etc..
Laser remolten is also referred to as laser melting, is to form laser molten pool using bombardment with laser beams workpiece surface, laser beam leaves
Molten bath area Fast Cooling solidifies afterwards, can obtain the grain structure of fine uniform.Laser melts technology in addition to that can improve bearing again
The texture of steel metal can also improve carbide, the microscopic appearance of alloy cpd and dispersity, by improving material
Microstructure obtain excellent mechanical property and corrosion resistance.Therefore, it is one promising, operable that laser melts technology again
Property strong and relatively economical bearing steel laser surface processing technology.
Utility model content
The shortcomings that the utility model is overcome in the prior art provides a kind of swashing for bearing of wind power generator surface
Light melts surface modification device and method again.
In order to solve the above-mentioned technical problem, the utility model is achieved through the following technical solutions：
A kind of laser for bearing of wind power generator surface melts surface modification device, including laser controller, laser again
Generator, laser processing platform, laser focalizer, cooling medium Storage Box, uniaxial mobile platform and argon gas air supply system；In list
It is placed with cooling medium Storage Box on axis mobile platform, laser processing platform has been positioned vertically above in cooling medium Storage Box
With laser focalizer, the laser processing platform is by holder, horizontal adjustment arm (Y direction) and vertical adjustment arm (Z-direction)
It constitutes, laser focalizer is connected with vertical adjustment arm, can by the horizontal adjustment arm and vertical adjustment arm that laser machine platform
The movement of laser focalizer progress both horizontally and vertically is controlled, uniaxial mobile platform side is provided with argon gas air supply system.
In the above-mentioned technical solutions, the argon gas air supply system by argon gas storage cylinder fitted, argon nozzle and supporting framework at,
The position of argon nozzle is fixed supporting rack, its gas outlet is made to be located at laser processing.
In the above-mentioned technical solutions, the laser controller is set to the master of the side laser controller of uniaxial mobile platform
Body is the desktop computer for the WINDOWS operating systems for installing control software, and the laser controller and laser generator pass through COM
Interface connects.
In the above-mentioned technical solutions, speculum and laser focusing lens group are provided in the laser focalizer.
In the above-mentioned technical solutions, the laser focalizer is connected by laser optical cable with laser generator, described to swash
The optical cable corner radius of curvature of light optical cable must be more than 20 times of optic cable diameter, can have laser transfer function.
In the above-mentioned technical solutions, it is contained with cooling medium in the cooling medium Storage Box.
In the above-mentioned technical solutions, the laser generator is model GSIJK2003SM, which has 2,000
Watt specified YAG laser output, can also carry out pulse output.
In the above-mentioned technical solutions, the horizontal adjustment arm passes through the screw rod and stepper motor adjusting horizontal position built in two
It moves, the vertical adjustment arm adjusts vertical displacement by screw rod built in two and stepper motor.
In the above-mentioned technical solutions, the uniaxial mobile platform adjusts X-axis side by platform built-in sliding rail and stepper motor
Upward displacement.
In the above-mentioned technical solutions, argon gas storage cylinder fitted is connected with argon nozzle by rubber hose, argon nozzle
Injection direction axis and processing bearing parts sample surfaces are in 45 degree of angles.
Melt surface modification device again using a kind of laser for bearing of wind power generator surface in above-mentioned technical proposal
For 42CrMo bearing steels it is laser surface intensified when, carry out in following manner：
It needs to carry out oil removing and cleaning pretreatment to quasi- strengthening surface first, ensures that finished surface cleans without grease.Then will
Finished surface is placed on inside the process cartridge of the mobile desktop of the present apparatus, and a certain amount of dry ice of process cartridge internal reservoir is as cooling
Medium ensures that sample bottom metal derby is padded, and sample bottom must be apart from cassette bottom 5mm or more, while the work surface of sample
Plane peak 5mm or more is stored higher than dry ice.Gas, argon gas is protected to protect injection rate as processing molten bath using injection argon gas
For 15-20L/min, nozzle distance laser focus point distance is 100-150mm, and argon gas injection direction and laser direction of advance must
It must be consistent.By the prefabricated laser processing route of control software, if you need to process plane, the coverage rate between two passages is 15%.
The defocusing amount for adjusting laser is ± 0.5mm, laser power 1500W -2000W, and straight line processing speed is adjusted according to sample working depth
Rate 3-5mm/s.Finally, moveable platform is opened while opening laser, is drafted and being added by the movement completion of laser beam fixed platform
Work route.
When carrying out laser surface intensified, technical data is as follows：
Laser power：For the common 42CrMo steel of wind power bearing, it is preferred that, laser power settings 1500W-
2000W。
Laser defocusing amount：For the common 42CrMo steel of wind power bearing, it is preferred that, laser defocusing amount be ±
0.5mm。
Passage coverage rate：For the common 42CrMo steel of wind power bearing, it is preferred that, passage coverage rate is 20%.
Laser scan rate：For the common 42CrMo steel of wind power bearing, it is preferred that, laser scan rate 3-
5mm/s。
Argon gas protects injection rate：For the common 42CrMo steel of wind power bearing, it is preferred that, argon gas protection injection
Rate is 15-20L/min.To ensure the microstructure quality in weight tabetisol domain, gas hole defect is avoided as possible, argon gas injection direction must
It must be consistent with laser scanning direction.
Cooling medium：For the common 42CrMo steel of wind power bearing, it is preferred that, cooling medium can select room temperature
Deionized water, dry ice, liquid nitrogen.When using dry ice and liquid nitrogen, need first to spray argon gas protection increasing argon flow amount.
Compared with prior art, the utility model has the beneficial effects that：
(1) it realizes that laser melts again and realizes that micron is brilliant, nanometer crystal microstructure, effectively promote bearing parts case hardness and wear-resisting
Property；
(2) it passes sequentially through and cooling water, dry ice, liquid nitrogen reinforcement cooling is added, can effectively control crystallization rate, and then control
Grain size and growth tendency.
(3) laser melts the kind carbide of method realization, the microscopic appearance of alloy cpd and dispersity again, effectively promotes axis
Hold the corrosion resistance of Steel material.
(4) features simple structure, it is adaptable to workpiece, it can be used in various metals laser processing occasion.
Description of the drawings
Fig. 1 is present apparatus structural schematic diagram.
Fig. 2 is that platform partial structural diagram is laser machined in the present apparatus.
Fig. 3 is the SEM photograph using present apparatus machine-shaping product figure.
Fig. 4 is optical microstructure's photo of machining area section structure.
Wherein, 1 is laser controller, and 2 be laser generator, and 3 be laser processing platform, and 4 be horizontal adjustment arm, and 5 be vertical
Straight regulating arm, 6 be laser focalizer, and 7 is focus laser beam, and 8 be cooling medium Storage Box, and 9 be uniaxial mobile platform, and 10 be argon
Gas jets, 11 be supporting rack, and 12 be argon gas storage cylinder fitted, and 13 be laser optical cable, and 14 be speculum, and 15 be laser focusing lens
Group, 16 be parts of bearings, and 17 be cooling medium.
Specific implementation mode
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
As shown in the figure, a kind of laser for bearing of wind power generator surface melts surface modification device, including laser again
Controller 1, laser generator 2, laser processing platform 3, laser focalizer 6, cooling medium Storage Box 8,9 and of uniaxial mobile platform
Argon gas air supply system；Cooling medium Storage Box is placed on uniaxial mobile platform, in the vertical direction of cooling medium Storage Box
It is provided with laser processing platform and laser focalizer, the laser processing platform is by holder, 4 He of horizontal adjustment arm (Y direction)
Vertical adjustment arm (Z-direction) 5 is constituted, and laser focalizer is connected with vertical adjustment arm, by the level for laser machining platform
Regulating arm and vertical adjustment arm can control the movement of laser focalizer progress both horizontally and vertically, in uniaxial mobile platform side
It is provided with argon gas air supply system.
The argon gas air supply system is made of argon gas storage cylinder fitted 12, argon nozzle 10 and supporting rack 11, and supporting rack is by argon
The position of gas jets is fixed, its gas outlet is made to be located at laser processing.The laser controller is set to uniaxial mobile flat
The main body of the side laser controller of platform is the desktop computer for the WINDOWS operating systems for installing control software, the laser control
Device processed is connected with laser generator by com interface.It is provided with speculum and laser focusing lens group in the laser focalizer.
The laser focalizer is connected by laser optical cable 13 with laser generator, the optical cable corner radius of curvature of the laser optical cable
20 times of optic cable diameter must be more than, can have laser transfer function.It is provided with cooling medium in the cooling medium Storage Box
17.The laser generator is model GSI JK2003SM, which exports with 2 kilowatts of specified YAG laser,
It can carry out pulse output.The horizontal adjustment arm adjusts horizontal displacement by screw rod built in two and stepper motor, described to hang down
Straight regulating arm adjusts vertical displacement by screw rod built in two and stepper motor.The single shaft mobile platform passes through platform built-in
Sliding rail and stepper motor adjust the displacement in X-direction.Argon gas storage cylinder fitted is connected with argon nozzle by rubber hose, argon
The injection direction axis and processing bearing parts sample surfaces of gas jets are in 45 degree of angles.
When carrying out laser surface intensified for bearing steel, laser generator plays laser excitation, and laser optical cable plays
Transmit the effect of laser.The present apparatus is fixed using laser position, is adjusted bearing surface working position by the way of platform movement
The effect of variation, wherein horizontal adjustment arm (Y direction) and uniaxial mobile platform (X-direction) play control processing plane
Mobile, vertical adjustment arm (Z-direction) can be programmed adjusting according to the height change of sample surfaces, can also play fine tuning
The effect of defocusing amount.Laser excitation, transmission and sample machining path are set in advance by laser controller and laser controller
Fixed and real-time control.Laser remolten processes bearing steel, under the conditions of cooling medium supplement heat rejecter, since its cooling velocity is exceedingly fast
(up to 106 DEG C/s), in nonequilibrium solidification process, since solid liquid interface is with few meters per second when advancing at utmost speed, in solid liquid interface
Solute atoms have little time to assemble in the liquid phase, crystal grain has little time to grow up, therefore obtains uniform tissue and small grains.
Using the present apparatus, for the laser surface intensified of 42CrMo bearing steels, oil removing and clear need to be carried out to quasi- strengthening surface
Pretreatment is washed, ensures that finished surface cleans without grease.Then finished surface is placed on to the process cartridge of the mobile desktop of the present apparatus
Inside, a certain amount of dry ice of process cartridge internal reservoir ensure that sample bottom metal derby is padded, sample bottom as cooling medium
Must be apart from cassette bottom 5mm or more, while the work surface of sample stores plane peak 5mm or more higher than dry ice.Using injection
Argon gas protects gas as processing molten bath, and it is 15-20L/min that argon gas, which protects injection rate, and nozzle distance laser focus point distance is
100-150mm, argon gas injection direction must be consistent with laser direction of advance.By the prefabricated laser processing route of control software, such as
Plane need to be processed, the coverage rate between two passages is 15%.The defocusing amount for adjusting laser is ± 0.5mm, laser power
1500W -2000W adjusts straight line processing speed 3-5mm/s according to sample working depth.Finally, it is opened while opening laser
Moveable platform is completed to draft processing route by the movement of laser beam fixed platform.Molded samples surface SEM photograph such as Fig. 3 institutes
Show.
For optical microstructure's photo of machining area section structure as shown in figure 4, the bottoms Fig. 4 are sample substrates, top is close
Integrate style region as the later tissue of machining area etching pit.It can be seen that machining area is without apparent manufacturing deficiency, and with a large amount of
Column crystal and equiax crystal, average-size be 5 μm or less, it is seen that machining area compared with base material with more uniform structural constituent with
And small grains.The corrosion resistance for being uniformly conducive to be promoted 42CrMo bearing steel surfaces of microstructure ingredient, small grains
Refined crystalline strengthening is generated, then has for the wear-resistant and hardness of bearing steel surface and is obviously improved.Therefore the present apparatus and correlation are used
Technique processing 42CrMo bearing steels can preferably promote the hardness of metal surface, wear-resistant and corrosion resisting property.
The utility model is described in detail above, but the content is only the preferred embodiment of the utility model,
It should not be considered as limiting the scope of the present invention.Equivalent change made according to the scope of application of this utility model with
Improve etc., it should all still belong within the patent covering scope of the utility model.
Claims (8)
1. a kind of laser for bearing of wind power generator surface melts surface modification device again, it is characterised in that：Including laser control
Device, laser generator, laser processing platform, laser focalizer, cooling medium Storage Box, uniaxial mobile platform and argon gas gas supply processed
System；Cooling medium Storage Box is placed on uniaxial mobile platform, it is sharp in being positioned vertically above for cooling medium Storage Box
Light processing platform and laser focalizer, the laser processing platform are made of holder, horizontal adjustment arm and vertical adjustment arm, laser
Focalizer is connected with vertical adjustment arm, can control laser poly- by the horizontal adjustment arm and vertical adjustment arm that laser machine platform
Burnt device carries out movement both horizontally and vertically, and uniaxial mobile platform side is provided with argon gas air supply system.
2. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：The argon gas air supply system is by argon gas storage cylinder fitted, argon nozzle and supporting framework at, supporting rack by argon nozzle
Position be fixed, so that its gas outlet is located at laser processing.
3. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：The main body that the laser controller is set to the side laser controller of uniaxial mobile platform is installation control software
WINDOWS operating systems desktop computer, the laser controller connected with laser generator by com interface.
4. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：It is provided with speculum and laser focusing lens group in the laser focalizer.
5. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：The laser focalizer is connected by laser optical cable with laser generator, the optical cable corner of the laser optical cable
Radius of curvature must be more than 20 times of optic cable diameter, can have laser transfer function.
6. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：The horizontal adjustment arm adjusts horizontal displacement, the vertical adjusting by screw rod built in two and stepper motor
Arm adjusts vertical displacement by screw rod built in two and stepper motor.
7. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：The single shaft mobile platform adjusts the displacement in X-direction by platform built-in sliding rail and stepper motor.
8. a kind of laser for bearing of wind power generator surface according to claim 1 melts surface modification device again,
It is characterized in that：Argon gas storage cylinder fitted is connected with argon nozzle by rubber hose, the injection direction axis of argon nozzle and processing
Bearing parts sample surfaces are in 45 degree of angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721701493.7U CN208071777U (en) | 2017-12-08 | 2017-12-08 | A kind of laser for bearing of wind power generator surface melts surface modification device again |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721701493.7U CN208071777U (en) | 2017-12-08 | 2017-12-08 | A kind of laser for bearing of wind power generator surface melts surface modification device again |
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| Publication Number | Publication Date |
|---|---|
| CN208071777U true CN208071777U (en) | 2018-11-09 |
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| CN201721701493.7U Expired - Fee Related CN208071777U (en) | 2017-12-08 | 2017-12-08 | A kind of laser for bearing of wind power generator surface melts surface modification device again |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760861A (en) * | 2017-12-08 | 2018-03-06 | 天津大学 | A kind of laser for bearing of wind power generator surface melts surface modification device and method again |
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2017
- 2017-12-08 CN CN201721701493.7U patent/CN208071777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107760861A (en) * | 2017-12-08 | 2018-03-06 | 天津大学 | A kind of laser for bearing of wind power generator surface melts surface modification device and method again |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181109 Termination date: 20191208 |