CN107099655B - The laser reinforcing process of vacuum pump compressor blade - Google Patents
The laser reinforcing process of vacuum pump compressor blade Download PDFInfo
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- CN107099655B CN107099655B CN201710177738.9A CN201710177738A CN107099655B CN 107099655 B CN107099655 B CN 107099655B CN 201710177738 A CN201710177738 A CN 201710177738A CN 107099655 B CN107099655 B CN 107099655B
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- pump compressor
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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
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- Optics & Photonics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The present invention relates to field of laser processing, disclose the laser reinforcing process of vacuum pump compressor blade, are as follows：With clean water cleaning blade surface；The first absorber coatings are equably smeared on blade；The second absorber coatings are sprayed outside the first absorber coatings by spray gun；Restraint layer is smeared outside blade again；It is carried out by laser alignment blade and along blade inside to the direction of blade outboard laser impact intensified.The present invention makes blade have stronger hardness on the direction to blade outboard on the inside of blade, blade is effectively prevent to be broken in the process of work by the setting of the second absorber coatings, meanwhile, avoid the water erosion of blade surface generation；The gasification difference being effectively prevent in the present invention by way of assisting heating between the absorber coatings of different-thickness, simplifies operating procedure, improves the efficiency of laser shock peening.
Description
Technical field
The present invention relates to field of laser processing, more particularly to the laser reinforcing process of vacuum pump compressor blade.
Background technology
The linear velocity of vacuum pump compressor blade air inlet blade tip can be up to 150m/s, since inlet condition humidity is big,
Even there is droplet in extreme circumstances, and will appear different degrees of water erosion problem, it is therefore proposed that a kind of being directed to vacuum
The local laser intensifying method for pumping compressor impeller, just becomes very necessary so as to improve the local water erosion problem of impeller blade.
For precipitation-hardening stainless steel blade, it is difficult to improve blade stiffness and intensity by process for quenching.When at present using whole solid solution
Effect processing, but this method needs whole heating, has the shortcomings that time-consuming, consumptive material, deformation are big, it is poor to strengthen effect.
Invention content
The present invention provides vacuum pump pressure for taking in the prior art, consumptive material, deforming disadvantage that is big, strengthening effect difference
The laser reinforcing process of contracting machine blade.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals：
The laser reinforcing process of vacuum pump compressor blade, is as follows：
A) clean water cleaning blade surface is used；
B) the first absorber coatings are equably smeared on blade；
C) the second absorber coatings are sprayed outside the first absorber coatings by spray gun, blade is close to the side of compressor rotation shaft
On the inside of blade, side of the blade far from compressor rotation shaft is blade outboard, and the second absorber coatings are from a plurality of side out of blade to leaf
The camber line composition extended on the outside of piece, the width of camber line are 3~5mm, between each camber line between be divided into 7~8mm；
D) restraint layer is smeared outside blade again；
E) laser is fixed by fixture；
F) laser impact intensified angle is adjusted：The angle that laser optical path and blade surface are adjusted by fixture is 20 °~
85°。
G) laser-impact technological parameter is determined：Pulsed laser energy is 3J~18J, and hot spot overlapping rate 20%~45% swashs
Optical scanning speed 0.01m/s~0.2m/s, laser pulse frequency 0.5Hz~10Hz；
H) it is carried out by laser alignment blade and along blade inside to the direction of blade outboard laser impact intensified.
By the setting of the second absorber coatings, blade is set to have on the direction to blade outboard on the inside of blade stronger
Hardness effectively prevent blade to be broken in the process of work, meanwhile, avoid the water erosion of blade surface generation.
Preferably, the thickness of the first absorber coatings is 0.5~0.55mm, the second absorber coatings and the first absorber coatings shape
At common thickness be 0.53~0.62mm.
Preferably, when laser impacts on the blade for being coated with the second absorber coatings, cooperation laser is heated using auxiliary
Simultaneously to the one step cladding of the first absorber coatings and the second absorber coatings.It is effectively prevent in the present invention not by way of assisting heating
Gasification difference between the absorber coatings of stack pile passes through each coating layer thickness optimization design and reasonable with laser technical parameters
Match, just the absorber coatings of different-thickness can be made to achieve the purpose that abundant gasification exploding by a laser-impact, simplify behaviour
Make technique, improves the efficiency of laser shock peening.
Preferably, auxiliary is heated to be self-induction heating auxiliary laser cladding, Microwave-assisted firing laser melting coating, electromagnetism stir
Mix one or more of the cladding of auxiliary heating laser, pulse current auxiliary heating laser cladding.
Preferably, the first absorber coatings and the second absorber coatings by absorb Emulsion Spraying form, absorb lotion by
Methyl methacrylate, styrene, 2~ethylhexyl of acrylic acid simultaneously coordinate activating agent, initiator progress polymerisation to form breast
Then liquid is stirred with dispersant, antifoaming agent, carbon dust in high-speed dispersing kettle.Absorber coatings in the prior art are coating
There are a certain number of micro-bubbles afterwards more, in this way in impact, laser light microbubble will cause material dotted ablation,
The surface state of material is influenced, and the plasma lateral expansion that laser beam is formed in blade surface can cause absorber coatings to be shelled
From improved absorber coatings improve protection effect, while also improving antistripping ability.
Preferably, being mixed and heated methyl methacrylate, styrene, 2-EHA to 80~90 DEG C
Mixed liquor is formed, activating agent is added wherein, initiator stirs and keeps the temperature 15~18 minutes, then is cooled to -12~-5 DEG C
And kept for 20~25 minutes, then rise to room temperature and dispersant, antifoaming agent and carbon dust are added wherein, by mixture in high speed point
It dissipates and is stirred in kettle.The effect of protection can preferably be played by being used as absorber coatings by the mixture that test of many times obtains, and ensure to swash
Light shock peening is normally carried out.
Preferably, the mass ratio that methyl methacrylate accounts for absorption lotion is 50~55%, styrene accounts for absorption lotion
Mass ratio be 30~35%, 2-EHA account for absorb lotion mass ratio be 20~30%.
Preferably, restraint layer is made of deionized water.
The present invention has significant technique effect as a result of above technical scheme：Pass through setting for the second absorber coatings
It sets, makes blade that there is stronger hardness on the direction to blade outboard on the inside of blade, effectively prevent blade in the mistake of work
It is broken in journey, meanwhile, avoid the water erosion of blade surface generation；It is effectively prevent in the present invention by way of assisting heating
Gasification difference between the absorber coatings of different-thickness, by each coating layer thickness optimization design and reasonable with laser technical parameters
Matching, just can make the absorber coatings of different-thickness achieve the purpose that abundant gasification exploding, simplify by a laser-impact
Operating procedure improves the efficiency of laser shock peening.
Description of the drawings
Fig. 1 be embodiment 1,3-6 5 kinds of absorber coatings thickness under the laser transmission coefficient schematic diagram tested.
Specific implementation mode
Below by embodiment, present invention is further described in detail.
Embodiment 1
The laser reinforcing process of vacuum pump compressor blade, is as follows：
1) clean water cleaning blade surface is used；
2) the first absorber coatings are equably smeared on blade；
3) the second absorber coatings are sprayed outside the first absorber coatings by spray gun, blade is close to the side of compressor rotation shaft
On the inside of blade, side of the blade far from compressor rotation shaft is blade outboard, and the second absorber coatings are from a plurality of side out of blade to leaf
The camber line composition extended on the outside of piece, the width of camber line are 4mm, between each camber line between be divided into 7.5mm；
4) restraint layer is smeared outside blade again；
5) laser is fixed by fixture；
6) laser impact intensified angle is adjusted：The angle that laser optical path and blade surface are adjusted by fixture is 20 °~
85°。
7) laser-impact technological parameter is determined：Pulsed laser energy is 15J, hot spot overlapping rate 30%, laser scanning speed
0.1m/s, laser pulse frequency 5Hz；
8) it is carried out by laser alignment blade and along blade inside to the direction of blade outboard laser impact intensified.
The thickness of first absorber coatings is 0.52mm, the common thickness that the second absorber coatings and the first absorber coatings are formed
(b) it is 0.54mm.
When laser impacts on the blade for being coated with the second absorber coatings, cooperation laser is heated simultaneously to first using auxiliary
The one step cladding of absorber coatings and the second absorber coatings.
Auxiliary be heated to be self-induction heating auxiliary laser cladding, Microwave-assisted firing laser melting coating, electromagnetic agitation auxiliary plus
One or more of thermal laser cladding, pulse current auxiliary heating laser cladding.
First absorber coatings and the second absorber coatings are formed by absorbing Emulsion Spraying, absorb lotion by methacrylic acid
Methyl esters, styrene, 2-EHA simultaneously coordinate activating agent, initiator carry out polymerisation formed lotion, then with point
Powder, antifoaming agent, carbon dust stir in high-speed dispersing kettle.
Methyl methacrylate, styrene, 2-EHA are mixed and heated to 80~90 DEG C and form mixing
Liquid, addition activating agent, initiator stir and keep the temperature 15~18 minutes wherein, then are cooled to -12~-5 DEG C and keep 20
It~25 minutes, then rises to room temperature and dispersant, antifoaming agent and carbon dust is added wherein, mixture is stirred in high-speed dispersing kettle
It mixes.
The mass ratio that methyl methacrylate accounts for absorption lotion is 50~55%, and the mass ratio that styrene accounts for absorption lotion is
30~35%, the mass ratio that 2-EHA accounts for absorption lotion is 20~30%.
Restraint layer is made of deionized water.
Embodiment 2
With embodiment 1, except that only carrying out the spraying of the first absorber coatings.
One embodiment 1 of table, embodiment 2 and the blade fatigue intensive parameter table without laser-impact
| Experimental group | Embodiment 1 | Embodiment 2 | Blade without laser-impact |
| Fatigue strength (MPa) | 450 | 423 | 380 |
Embodiment 3
With embodiment 1, except that the second absorber coatings are with the common thickness (b) that the first absorber coatings are formed
0.59mm。
Embodiment 4
With embodiment 1, except that the second absorber coatings are with the common thickness (b) that the first absorber coatings are formed
0.7mm。
Embodiment 5
With embodiment 1, except that the second absorber coatings are with the common thickness (b) that the first absorber coatings are formed
0.8mm。
Embodiment 6
With embodiment 1, except that the second absorber coatings are with the common thickness (b) that the first absorber coatings are formed
0.9mm。
In short, the foregoing is merely presently preferred embodiments of the present invention, it is all according to impartial made by scope of the present invention patent
Variation and modification, should all belong to the covering scope of patent of the present invention.
Claims (7)
1. the laser reinforcing process of vacuum pump compressor blade, it is characterised in that：It is as follows：
A) clean water cleaning blade surface is used；
B) the first absorber coatings are equably smeared on blade；
C) the second absorber coatings are sprayed outside the first absorber coatings by spray gun, blade is blade close to the side of compressor rotation shaft
Inside, side of the blade far from compressor rotation shaft are blade outboard, and the second absorber coatings are from a plurality of side out of blade to outside blade
The camber line composition that side extends, the width of camber line are 3~5mm, between each camber line between be divided into 7~8mm；
D) restraint layer is smeared outside blade again；
E) laser is fixed by fixture；
F) laser impact intensified angle is adjusted：The angle that laser optical path and blade surface are adjusted by fixture is 20 °~85 °；
G) laser-impact technological parameter is determined：Pulsed laser energy is 3J~18J, and hot spot overlapping rate 20%~45%, laser is swept
Retouch speed 0.01m/s~0.2m/s, laser pulse frequency 0.5Hz~10Hz；
H) the direction progress that blade outboard is arrived by laser alignment blade and along blade inside is laser impact intensified, when laser is applying
When being impacted on the blade for there are the second absorber coatings, cooperation laser is heated using auxiliary, the first absorber coatings and second are absorbed simultaneously
One step cladding of coating.
2. the laser reinforcing process of vacuum pump compressor blade according to claim 1, it is characterised in that：First absorbs painting
The thickness of layer is 0.5~0.55mm, and the common thickness that the second absorber coatings and the first absorber coatings are formed is 0.53~0.62mm.
3. the laser reinforcing process of vacuum pump compressor blade according to claim 1, it is characterised in that：Auxiliary is heated to be
Self-induction heats auxiliary laser cladding, Microwave-assisted firing laser melting coating, the cladding of electromagnetic agitation auxiliary heating laser, pulse current
Assist one or more of heating laser cladding.
4. the laser reinforcing process of vacuum pump compressor blade according to claim 1, it is characterised in that：First absorbs painting
Layer and the second absorber coatings are formed by absorbing Emulsion Spraying, absorb lotion by methyl methacrylate, styrene, acrylic acid
2- ethylhexyls simultaneously coordinate activating agent, initiator carry out polymerisation formed lotion, then with dispersant, antifoaming agent, carbon dust
It is stirred in high-speed dispersing kettle.
5. the laser reinforcing process of vacuum pump compressor blade according to claim 4, it is characterised in that：By metering system
Sour methyl esters, styrene, 2-EHA are mixed and heated to 80~90 DEG C of formation mixed liquors, and activity is added wherein
Agent, initiator stir and keep the temperature 15~18 minutes, then are cooled to -12~-5 DEG C and are kept for 20~25 minutes, then rise to
Simultaneously dispersant, antifoaming agent and carbon dust is added in room temperature wherein, and mixture is stirred in high-speed dispersing kettle.
6. the laser reinforcing process of vacuum pump compressor blade according to claim 4, it is characterised in that：Methacrylic acid
The mass ratio that methyl esters accounts for absorption lotion is 50~55%, and the mass ratio that styrene accounts for absorption lotion is 30~35%, acrylic acid 2-
The mass ratio that ethylhexyl accounts for absorption lotion is 20~30%.
7. the laser reinforcing process of vacuum pump compressor blade according to claim 1, it is characterised in that：Restraint layer is by going
Ionized water is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177738.9A CN107099655B (en) | 2017-03-23 | 2017-03-23 | The laser reinforcing process of vacuum pump compressor blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710177738.9A CN107099655B (en) | 2017-03-23 | 2017-03-23 | The laser reinforcing process of vacuum pump compressor blade |
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| Publication Number | Publication Date |
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| CN107099655A CN107099655A (en) | 2017-08-29 |
| CN107099655B true CN107099655B (en) | 2018-09-07 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014278A (en) * | 2012-12-25 | 2013-04-03 | 中国人民解放军空军工程大学 | Method for improving blade fatigue strength through comprehensive means |
| CN103627855A (en) * | 2013-11-04 | 2014-03-12 | 江苏大学 | Workpiece surface intensifying method by laser micro processing |
| CN103898313A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Laser impact reinforcing method of turbine disc tongue-and-groove structure |
| CN104862468A (en) * | 2015-06-11 | 2015-08-26 | 温州大学 | Method for prolonging service life of turbine blade based on laser double-faced impact technique |
-
2017
- 2017-03-23 CN CN201710177738.9A patent/CN107099655B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014278A (en) * | 2012-12-25 | 2013-04-03 | 中国人民解放军空军工程大学 | Method for improving blade fatigue strength through comprehensive means |
| CN103627855A (en) * | 2013-11-04 | 2014-03-12 | 江苏大学 | Workpiece surface intensifying method by laser micro processing |
| CN103898313A (en) * | 2014-04-10 | 2014-07-02 | 西安航空动力股份有限公司 | Laser impact reinforcing method of turbine disc tongue-and-groove structure |
| CN104862468A (en) * | 2015-06-11 | 2015-08-26 | 温州大学 | Method for prolonging service life of turbine blade based on laser double-faced impact technique |
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| Publication number | Publication date |
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| CN107099655A (en) | 2017-08-29 |
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