CN109136922A - A kind of aero-engine and the preparation of gas turbine functional coating electric spark numerical-control deposition with repair control method - Google Patents
A kind of aero-engine and the preparation of gas turbine functional coating electric spark numerical-control deposition with repair control method Download PDFInfo
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- CN109136922A CN109136922A CN201811104644.XA CN201811104644A CN109136922A CN 109136922 A CN109136922 A CN 109136922A CN 201811104644 A CN201811104644 A CN 201811104644A CN 109136922 A CN109136922 A CN 109136922A
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- 230000008021 deposition Effects 0.000 title claims abstract description 157
- 238000010892 electric spark Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000000576 coating method Methods 0.000 title claims abstract description 41
- 239000011248 coating agent Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 30
- 230000008439 repair process Effects 0.000 title claims abstract description 15
- 238000000151 deposition Methods 0.000 claims abstract description 200
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 239000007789 gas Substances 0.000 claims description 25
- 238000003801 milling Methods 0.000 claims description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000005137 deposition process Methods 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 208000035126 Facies Diseases 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000005457 optimization Methods 0.000 claims description 3
- 239000011247 coating layer Substances 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 238000010891 electric arc Methods 0.000 claims 1
- 239000011159 matrix material Substances 0.000 abstract description 3
- 238000005067 remediation Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 239000000567 combustion gas Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
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- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
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- Organic Chemistry (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
Abstract
The present invention relates to a kind of aero-engine and the preparation of gas turbine functional coating electric spark numerical-control deposition with repair control method, the present invention is in order to solve the problems, such as spot welded type electric spark numerical-control depositing operation because of excessive idle stroke bring inefficiency.The present invention is based on electric spark-Automated library system depositing systems, using electric spark numerical-control depositing operation, coordination electrode carries out straight line deposition on matrix, obtain corresponding discharging gap and consumption of electrode rule, the two is brought into parametric program, output deposits G code program using the numerical control of nearly permanent clearance-type deposition method, completes the nearly permanent clearance-type deposition preparation of aero-engine and gas turbine functional coating and repairs.A kind of aero-engine of the present invention and the preparation of gas turbine functional coating electric spark numerical-control deposition and reparation control method, both it had been able to achieve the accurate control of aero-engine and gas turbine functional coating preparation and repair process, heavy preparation and remediation efficiency can be improved again, there is extremely wide prospects for commercial application.
Description
Technical field
The present invention relates to aero-engines and the preparation of the electric spark numerical-control of gas turbine functional coating deposition to control with reparation
Method.
Background technique
In aero-engine and gas turbine industry, hot-end component is applied by the way that various functions are prepared on its surface
Layer is to improve the characteristics such as its wearability, corrosion resistance, scour resistance and heat-resisting quantity to improve its fatigue life and service life.Electricity
Spark deposition technique, because it is low between matrix surface heat input, electrode material range of choice is wide, metallurgical bonding coating-substrate, with
And minimum and controllable feature is influenced on matrix mechanical property and metallurgical performance, make the technique in recent years in aero-engine and combustion gas
It is quickly applied and is promoted in the preparation and reparation of turbine key components and parts function of surface coating.All the time, traditional electrode
Rotary electric spark deposition uses manual mode of operation, and the intervention of human factor causes deposition process controllability and reproducibility
Very poor, it is even more impossible to realize the accurate preparation of more and more complex curve curved surface coatings in industry.To solve the above-mentioned problems, it invents
People builds electric spark-Automated library system depositing system for the first time, and has gone out electric spark numerical-control deposition by platform development of this system
New process, and coating preparation is completed with spot welded type deposition method and is repaired.Though spot welded type deposition method is realized to coating system
The accurate control of standby process, but because having more idle stroke in deposition process, deposition efficiency needs to be further increased.Therefore,
For the lower disadvantage of spot welded type electric spark numerical-control deposition efficiency, the present invention proposes that a kind of electric spark numerical-control deposition is prepared and repaired
The control new method of aero-engine and gas turbine functional coating, i.e., close permanent clearance-type electric spark numerical-control deposition method, gram
While taking traditional electric spark deposition technique manual operation bring many drawbacks, with spot welded type electric spark numerical-control sedimentary facies than big
The big efficiency for improving electric spark numerical-control deposition preparation and repair function coating.
Summary of the invention
The present invention in order to solve traditional-handwork formula electric spark deposition technique cannot achieve technical process precision control, with
And the problem of spot welded type electric spark numerical-control depositing operation inefficiency, and the nearly permanent clearance-type method of use proposed realizes aviation hair
Motivation and the preparation of gas turbine functional coating electric spark numerical-control deposition and reparation control method.
A kind of aero-engine and the deposition preparation of gas turbine functional coating electric spark numerical-control press one with control method is repaired
Lower step is realized:
Step 1: on the basis of spot welded type deposition method, a kind of higher nearly permanent clearance-type deposition method of deposition efficiency is proposed；Closely
The specific steps of permanent clearance-type deposition method are as follows:
Step 1 one: numerical control deposition procedure coordination electrode is quickly positioned with locating speed to workpiece surface；
Step 1 two: numerical control deposition procedure coordination electrode is with closing speed close to workpiece surface, and downlink contact workpiece is discharged；
Step 1 three: numerical control deposition procedure coordination electrode returns to intended height completion striking above workpiece to promote speed；
Step 1 four: numerical control deposition procedure coordination electrode keeps gap approximately constant between electrode and workpiece, to maintain electrode
Continuous discharge process between workpiece, while implementing to deposit with deposition velocity, until running to terminal completes deposition；
Step 1 five: numerical control deposition procedure coordination electrode is back to numerically-controlled machine tool reference point with return speed；
Step 2: carrying out straight line deposition using electrode on workpiece, obtain corresponding discharging gap and electrode length consumption law,
The two is brought into parametric programming, output deposits G code program using the numerical control of nearly permanent clearance-type deposition method；
Discharging gap and electrode length consumption law determine as follows:
Step 2 one: CNC milling machine is opened；
Step 2 two: electric spark deposition power supply is closed, multimeter is adjusted to buzzer gear, two test pens of multimeter connect respectively
Receiving electrode and workpiece；
Step 2 three: operating numerical control milling machine makes electrode be in contact with workpiece selected location short circuit, using multimeter buzzing as electrode with
Workpiece short circuit mark, writes down Z axis coordinate value at this time on CNC milling machine；
Step 2 four: removing multimeter, opens electric spark deposition power supply and sets deposition parameter；
Step 2 five: establishment straight line or reciprocating broken line (as shown in Figure 2) deposition procedure, three implement deposition in accordance with the following steps；
Step 2 six: by repetition test, optimal deposition voltage, deposition current, deposition frequency, deposited capacitances, positioning speed are found out
Degree, promotes speed, deposition velocity and referring back to spot speed at closing speed, to obtain optimal deposition quality and coating formation
Quality；
Step 2 seven: after deposition, according to the step 2 two and step 2 three again measuring electrode and workpiece selected location
Z axis coordinate value under short-circuit conditions；
Step 2 eight: with the absolute value of the difference of 7 two Z axis measured values of step 2 three and step 2 divided by deposition path length, i.e.,
For discharging gap consumption law or electrode length changing rule；
Step 2 nine: electrode length changing rule is organized in numerical control deposition procedure, with the fluctuation of real-time compensation discharging gap, dimension
Discharging gap is held close to constant；
Step 3: electric spark numerical-control depositing operation is used to prepare straight line or reciprocal in workpiece surface with nearly permanent clearance-type deposition method
Formula broken line coating, specific step is as follows；
Step 3 one: metal stick electrode is packed into dedicated deposition knife handle；
Step 3 two: dedicated deposition knife handle is packed into CNC milling machine main shaft；
Step 3 three: electric spark deposition positive pole is connected on the deposition knife handle；
Step 3 four: will be on clamping workpiece to fixture；
Step 3 five: electric spark deposition power cathode is connected on workpiece or fixture；
Step 3 six: numerical control will be input to using the reciprocating parametrization deposition numerical control program of nearly permanent clearance-type deposition method establishment
In the digital control system of milling machine；
Step 3 seven: according to the technological requirements, being arranged in the deposition parameter value of the optimization obtained in step 2 six, by its assignment heavy
In product program, and workpiece coordinate system is set on workpiece；
Step 3 eight: accessing deposition region for argon gas, make in deposition process, and region of discharge is protected by argon gas always；
Step 3 nine: booting operating parameterization deposits numerical control program, executes deposition；
Step 3 ten: deposition finishes, and unloads workpiece.
The present invention is by developing electric spark numerical-control deposition on the basis of building electric spark-Automated library system depositing system
New process, solving traditional-handwork formula electric spark deposition technique cannot achieve the drawbacks of technical process accurately controls, and realize electricity
The automation of spark deposition technique and NC postprocessing, but spot welded type electric spark numerical-control depositing operation brings deposition to imitate because idle stroke is more
The not high problem of rate, the present invention are directed to spot welded type deposition method inefficiency problem, propose a kind of nearly permanent clearance-type electric spark numerical-control
New method is deposited, redundancy idle stroke has been effectively eliminated, has substantially increased electric spark numerical-control deposition efficiency, can efficiently realize
The preparation and reparation of functional coating have broad prospect of application.
Detailed description of the invention
Fig. 1 is a kind of aero-engine and the preparation of gas turbine functional coating electric spark numerical-control deposition and reparation control method
Nearly perseverance clearance-type deposition principle schematic diagram, in figure: 1 is dedicated deposition knife handle；2 be electrode；3 be deposition path；4 be workpiece or base
Body；5 be the differential of the arc；A is anchor point, i.e. electrode is close to workpiece starting point；B arcing point；C is deposition height, and nearly permanent clearance-type
Electrode height position in deposition；D is deposition terminal；A is electrode and workpiece gap distance；1. being locating speed；2. for close speed
Degree；3. to promote speed；4. being deposition velocity；5. for referring back to speed.
Fig. 2 is that the closely permanent clearance-type of electrode length consumption law deposits reciprocating test routine.
Fig. 3 is that the closely permanent clearance-type of electrode length consumption law deposits reciprocating test result.
Fig. 4 is that nearly permanent clearance-type electric spark numerical-control deposits reciprocating deposition path.
Fig. 5 is that nearly permanent clearance-type electric spark numerical-control deposits reciprocating deposition results.
Fig. 6 is nearly permanent clearance-type electric spark numerical-control deposition preparation and reparation surface topography.
Fig. 7 is nearly permanent clearance-type electric spark numerical-control deposition preparation and reparation Cross Section Morphology.
Specific embodiment
Specific embodiment 1: a kind of aero-engine and gas turbine functional coating electric spark numerical-control deposition are prepared and are repaired
Multiple control method that is, on the basis of Milling Motion in Three-axes NC, is passed through based on implementing on electric spark-Automated library system depositing system
Design specialized deposits knife handle, and Milling Motion in Three-axes NC and electric spark deposition power supply are integrated, electric spark-computer is built
Integrated depositing system hardware platform；The electric spark deposition knife handle includes the patent " one of Patent No. ZL201510020448.4
Kind of numerical control electric spark deposits knife handle ", a kind of patent " main shaft-electromagnetic drive electrode rotation of Patent No. ZL201621039011.1
Vibration formula high energy micro arc deposits knife handle ", a kind of patent of Patent No. ZL201621038920.3 " main shaft-pendulum driving electricity
Pole rotating vibrating type high energy micro arc deposits knife handle ", " a kind of main shaft-pendulum drives for the patent of Patent No. ZL201621038920.3
Moving electrode rotating vibrating type high energy micro arc deposit knife handle ", application No. is a kind of patent of CN 201610804041.5 " main shafts-
Electromagnetic drive electrode rotating vibrating type high energy micro arc deposits knife handle ", that application No. is the patents of CN 201610803859.5 is " a kind of
Spring-gravity regulator high energy micro arc deposits knife handle " and application No. is a kind of patent of CN 201610803860.8 " masters
Axis-pendulum driving electrodes rotating vibrating type high energy micro arc deposits knife handle "；A kind of aero-engine and gas turbine functional coating
Electric spark numerical-control deposition preparation with repair control method the following steps are included:
Step 1: on the basis of spot welded type deposition method, a kind of higher nearly permanent clearance-type deposition method of deposition efficiency is proposed；
" a kind of high energy of titanium-fire-preventing coating is micro- for the patent that the spot welded type deposition method is Patent No. ZL201510716688.8
Arc spark numerical control deposition method " propose deposition method；
The specific steps of nearly perseverance clearance-type deposition method are as follows:
Step 1 one: numerical control deposition procedure coordination electrode is quickly positioned with locating speed to workpiece surface；
Step 1 two: numerical control deposition procedure coordination electrode is with closing speed close to workpiece surface, and downlink contact workpiece is discharged；
Step 1 three: numerical control deposition procedure coordination electrode returns to intended height completion striking above workpiece to promote speed；
Step 1 four: numerical control deposition procedure coordination electrode keeps gap approximately constant between electrode and workpiece, to maintain electrode
Continuous discharge process between workpiece, while implementing to deposit with deposition velocity, until running to terminal completes deposition；
Step 1 five: numerical control deposition procedure coordination electrode is back to numerically-controlled machine tool reference point with return speed；
Step 2: carrying out straight line deposition using electrode on workpiece, obtain corresponding discharging gap and electrode length consumption law,
The two is brought into parametric programming, output deposits G code program using the numerical control of nearly permanent clearance-type deposition method；
Discharging gap and electrode length consumption law determine as follows:
Step 2 one: CNC milling machine is opened；
Step 2 two: electric spark deposition power supply is closed, multimeter is adjusted to buzzer gear, two test pens of multimeter connect respectively
Receiving electrode and workpiece；
Step 2 three: operating numerical control milling machine makes electrode be in contact with workpiece selected location short circuit, using multimeter buzzing as electrode with
Workpiece short circuit mark, writes down Z axis coordinate value at this time on CNC milling machine；
Step 2 four: removing multimeter, opens electric spark deposition power supply and sets deposition parameter；
Step 2 five: establishment straight line or reciprocating broken line (as shown in Figure 2) deposition procedure, three implement deposition in accordance with the following steps；
Step 2 six: by repetition test, optimal deposition voltage, deposition current, deposition frequency, deposited capacitances, positioning speed are found out
Degree, promotes speed, deposition velocity and referring back to spot speed at closing speed, to obtain optimal deposition quality and coating formation
Quality (as shown in Figure 3)；
Step 2 seven: after deposition, according to the step 2 two and step 2 three again measuring electrode and workpiece selected location
Z axis coordinate value under short-circuit conditions；
Step 2 eight: with the absolute value of the difference of 7 two Z axis measured values of step 2 three and step 2 divided by deposition path length, i.e.,
For discharging gap consumption law or electrode length changing rule；
Step 2 nine: electrode length changing rule is organized in numerical control deposition procedure, with the fluctuation of real-time compensation discharging gap, dimension
Discharging gap is held close to constant；
Step 3: electric spark numerical-control depositing operation is used to prepare straight line or reciprocal in workpiece surface with nearly permanent clearance-type deposition method
Formula broken line coating, specific step is as follows；
Step 3 one: metal stick electrode is packed into dedicated deposition knife handle；
Step 3 two: dedicated deposition knife handle is packed into CNC milling machine main shaft；
Step 3 three: electric spark deposition positive pole is connected on the deposition knife handle；
Step 3 four: will be on clamping workpiece to fixture；
Step 3 five: electric spark deposition power cathode is connected on workpiece or fixture；
Step 3 six: will be using reciprocating deposition (as shown in Figure 4) numerical control journey of parametrization of nearly permanent clearance-type deposition method establishment
Sequence is input in the digital control system of CNC milling machine；
Step 3 seven: according to the technological requirements, being arranged in the deposition parameter value of the optimization obtained in step 2 six, by its assignment heavy
In product program, and workpiece coordinate system is set on workpiece；
Step 3 eight: accessing deposition region for argon gas, make in deposition process, and region of discharge is protected by argon gas always；
Step 3 nine: booting operating parameterization deposits numerical control program, executes deposition；
Step 3 ten: deposition finishes, and unloads workpiece, obtains final coating (as shown in Figure 5).
Specific embodiment 2: the present embodiment is different from the first embodiment in that in the step 1 one numerical control it is heavy
Product program navigates to electrode away from 10-200mm above workpiece surface, and locating speed is 100~9000mm/min.
Specific embodiment 3: the present embodiment is different from the first and the second embodiment in that electric in the step 1 two
Closing speed very close to workpiece is 100-500mm/min.
Specific embodiment 4: the step 1 three unlike one of present embodiment and specific embodiment one to three
The promotion speed of middle electrode is 100-200mm/min, and electrode-workpiece gap is maintained in discharging gap at this time, can pilot arc
Burning.
Specific embodiment 5: the step 1 four unlike one of present embodiment and specific embodiment one to four
In the deposition velocity of nearly permanent gap deposition be 10-100mm/min.
Specific embodiment 6: the step 1 five unlike one of present embodiment and specific embodiment one to five
The return speed that middle electrode returns to numerically-controlled machine tool reference point is 1000~9000mm/min.
Specific embodiment 7: the step 1 five unlike one of present embodiment and specific embodiment one to six
The return speed that middle electrode returns to numerically-controlled machine tool reference point is 1000~9000mm/min.
Specific embodiment 8: sinking in step 1 four unlike one of present embodiment and specific embodiment one to seven
When product 20~240V of voltage, electrode and workpiece gap are 0.01~0.2mm.
Specific embodiment 9: electrode in step 1 unlike one of present embodiment and specific embodiment one to eight
ForRodlike metal electrode.
Specific embodiment 10: close in step 2 unlike one of present embodiment and specific embodiment one to nine
When permanent gap deposition straight line coating, discharging gap and electrode length consumption law are 0.5~2 μm/10mm, that is, electrode is often passed by
The path of 10mm, electrode-workpiece gap increases by 0.5~2 μm or electrode length reduces 0.5~2 μm.
Specific embodiment 11: electricity in step 2 unlike one of present embodiment and specific embodiment one to ten
Arc nonlinear characteristic guiding discharge gap or electrode length consumption also have non-linear behavior, but with the line of 0.5~2 μm/10mm
Property consumption law approximate compensation is carried out to Z axis can be burnt with stablizing for pilot arc.
Specific embodiment 12: present embodiment is unlike specific embodiment one to one of 11 in step 2
Middle discharging gap changing rule and the specific value of electrode length consumption law are determined by test.
Specific embodiment 13: present embodiment is unlike specific embodiment one to one of 12 in step 3
Middle deposition efficiency and spot welded type sedimentary facies ratio improve 5.6 times or more.
Specific embodiment 14: present embodiment nearly perseverance gap unlike specific embodiment one to one of 13
Formula deposition gained coating have with spot welded type deposition " sputtering " shape pattern (as shown in Figure 6).
Specific embodiment 15: present embodiment and deposition voltage unlike specific embodiment one to one of 14
It is 150 μ F for 80V, deposited capacitances, deposition frequency 1KHz, speed of mainshaft 800n/min, locating speed 2000mm/
Min, closing speed 100mm/min, promoted speed be 100mm/min, deposition velocity 100mm/min, referring back to speed
Degree is 3000mm/min, and coating layer thickness reaches~60 μm (as shown in Figure 7).
Claims (9)
1. in a kind of aero-engine and the preparation of gas turbine functional coating electric spark numerical-control deposition and reparation control method, i.e., sharp
With nearly permanent clearance-type deposition method preparation and reparation, which is characterized in that a kind of aero-engine and gas turbine function
Energy coating electric spark numerical-control deposition preparation is mainly comprised the steps that with control method is repaired
Step 1: on the basis of spot welded type deposition method, a kind of higher nearly permanent clearance-type deposition method of deposition efficiency is proposed；
The specific steps of nearly perseverance clearance-type deposition method are as follows:
Step 1 one: numerical control deposition procedure coordination electrode is quickly positioned with locating speed to workpiece surface；
Step 1 two: numerical control deposition procedure coordination electrode is with closing speed close to workpiece surface, and downlink contact workpiece is discharged；
Step 1 three: numerical control deposition procedure coordination electrode returns to intended height completion striking above workpiece to promote speed；
Step 1 four: numerical control deposition procedure coordination electrode keeps gap approximately constant between electrode and workpiece, to maintain electrode
Continuous discharge process between workpiece, while implementing to deposit with deposition velocity, until running to terminal completes deposition；
Step 1 five: numerical control deposition procedure coordination electrode is back to numerically-controlled machine tool reference point with return speed；
Step 2: carrying out straight line deposition using electrode on workpiece, obtain corresponding discharging gap and electrode length consumption law,
The two is brought into parametric programming, output deposits G code program using the numerical control of nearly permanent clearance-type deposition method；
Discharging gap and electrode length consumption law determine as follows:
Step 2 one: CNC milling machine is opened；
Step 2 two: electric spark deposition power supply is closed, multimeter is adjusted to buzzer gear, two test pens of multimeter connect respectively
Receiving electrode and workpiece；
Step 2 three: operating numerical control milling machine makes electrode be in contact with workpiece selected location short circuit, using multimeter buzzing as electrode with
Workpiece short circuit mark, writes down Z axis coordinate value at this time on CNC milling machine；
Step 2 four: removing multimeter, opens electric spark deposition power supply and sets deposition parameter；
Step 2 five: establishment straight line or reciprocating broken line (as shown in Figure 2) deposition procedure, three implement deposition in accordance with the following steps；
Step 2 six: by repetition test, optimal deposition voltage, deposition current, deposition frequency, deposited capacitances, positioning speed are found out
Degree, promotes speed, deposition velocity and referring back to spot speed at closing speed, to obtain optimal deposition quality and coating formation
Quality；
Step 2 seven: after deposition, according to the step 2 two and step 2 three again measuring electrode and workpiece selected location
Z axis coordinate value under short-circuit conditions；
Step 2 eight: with the absolute value of the difference of 7 two Z axis measured values of step 2 three and step 2 divided by deposition path length, i.e.,
For discharging gap consumption law or electrode length changing rule；
Step 2 nine: electrode length changing rule is organized in numerical control deposition procedure, with the fluctuation of real-time compensation discharging gap, dimension
Discharging gap is held close to constant；
Step 3: electric spark numerical-control depositing operation is used to prepare straight line or reciprocal in workpiece surface with nearly permanent clearance-type deposition method
Formula broken line coating, specific step is as follows；
Step 3 one: metal stick electrode is packed into dedicated deposition knife handle；
Step 3 two: dedicated deposition knife handle is packed into CNC milling machine main shaft；
Step 3 three: electric spark deposition positive pole is connected on the deposition knife handle；
Step 3 four: will be on clamping workpiece to fixture；
Step 3 five: electric spark deposition power cathode is connected on workpiece or fixture；
Step 3 six: numerical control will be input to using the reciprocating parametrization deposition numerical control program of nearly permanent clearance-type deposition method establishment
In the digital control system of milling machine；
Step 3 seven: according to the technological requirements, being arranged in the deposition parameter value of the optimization obtained in step 2 six, by its assignment heavy
In product program, and workpiece coordinate system is set on workpiece；
Step 3 eight: accessing deposition region for argon gas, make in deposition process, and region of discharge is protected by argon gas always；
Step 3 nine: booting operating parameterization deposits numerical control program, executes deposition；
Step 3 ten: deposition finishes, and unloads workpiece.
2. a kind of aero-engine according to claim 1 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, which is characterized in that numerical control deposition procedure navigates to electrode away from above workpiece surface in the step 1 one
At 10-200mm, locating speed is 100~9000mm/min；In the step 1 two, the closing speed of electrode close to workpiece is
100-500mm/min；In the step 1 three, the promotion speed of electrode is 100-200mm/min, at this time electrode-workpiece gap
It is maintained in discharging gap, it can pilot arc burning；In the step 1 four, the deposition velocity of nearly perseverance gap deposition is 10-
100mm/min；In the step 1 five, the return speed that electrode returns to numerically-controlled machine tool reference point is 1000~9000mm/min.
3. a kind of aero-engine according to claim 2 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, it is characterised in that in the step 1 four when 20 ~ 240V of deposition voltage, electrode and workpiece gap be 0.01~
0.2mm。
4. a kind of aero-engine according to claim 3 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, it is characterised in that electrode is the rodlike metal electrode of 2~6mm in the step 1.
5. a kind of aero-engine according to claim 4 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, it is characterised in that in the step 2 in nearly permanent gap deposition straight line coating, discharging gap and electrode are long
Degree consumption law is 0.5~2 μm/10mm, that is, electrode is often passed by the path of 10mm, electrode-workpiece gap increase by 0.5~2 μm or
Electrode length reduces 0.5~2 μm.
6. a kind of aero-engine according to claim 5 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, it is characterised in that in the step 2, electric arc nonlinear characteristic guiding discharge gap or electrode length consumption
Also there is non-linear behavior, but carrying out approximate compensation to Z axis with the linear consumption law of 0.5~2 μm/10mm can be with pilot arc
Stablize burning.
7. a kind of aero-engine according to claim 6 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, it is characterised in that in the step 2, discharging gap changing rule and electrode length consumption law are specifically taken
Value is determined by test.
8. a kind of aero-engine according to claim 7 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, which is characterized in that in step 3, deposition efficiency and spot welded type sedimentary facies ratio improve 5.6 times or more.
9. a kind of aero-engine according to claim 8 and gas turbine functional coating electric spark numerical-control deposition preparation with
Repair control method, which is characterized in that nearly perseverance clearance-type deposition gained coating have with spot welded type deposition " sputtering " shape
Pattern, coating layer thickness reach~60 μm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113776998A (en) * | 2021-09-08 | 2021-12-10 | 安徽江淮汽车集团股份有限公司 | Supercharger deposit evaluation method |
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|---|---|---|---|---|
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