CN105057969A - Blisk repairing method based on micro-ray plasma arc welding and electric spark finishing - Google Patents
Blisk repairing method based on micro-ray plasma arc welding and electric spark finishing Download PDFInfo
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- CN105057969A CN105057969A CN201510289304.9A CN201510289304A CN105057969A CN 105057969 A CN105057969 A CN 105057969A CN 201510289304 A CN201510289304 A CN 201510289304A CN 105057969 A CN105057969 A CN 105057969A
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- blisk
- blade
- welding
- electric spark
- cladding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/002—Repairing turbine components, e.g. moving or stationary blades, rotors
Abstract
The present invention discloses a blisk repairing method based on micro-ray plasma arc welding and electric spark finishing. The method comprises fusion covering and bead welding a metal at blade top ends and blade edges by using a micro-ray plasma arc welding method, thus to complete fusion covering and bead welding at blade top end and blade edge abrasion and damage positions; carrying out electric spark finishing at the blade top ends, the blade edges and blade top end fusion covering and bead welding parts, removing a solidified layer emerged in blade electric spark processing by utilizing a wet sand blowing technique, and polishing the blades; installing a blisk of which a molded face is repaired on an outer round grinding machine, and carrying out high-speed grinding of an outer circle of the blisk to achieve a length size of the blades, thus to complete repairing work of blade top end and edge abrasion or damages of the blisk. Abrasion or damages on blade tops and blade edges can be rapidly and accurately repaired on the basis of the blade molded surface, re-making of the blades is completed, and using performance of the blades is recovered.
Description
[technical field]
The invention belongs to blade recovery technique field, relate to the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing.
[background technology]
The structure of blisk is very complicated, passage opening character is poor, blade is thin, bending is large, yielding, aero-engine and gas turbine blisk manufactured materials mainly adopt the advanced composite materials such as the contour performance metal material of titanium alloy, high temperature alloy and titanium base, titanium aluminide simultaneously, not only increase manufacture difficulty, also stern challenge is proposed to the maintenance of leaf dish.Current domestic blisk reparation is mainly repaired and manual grinding by human weld, and reparation precision is low, and repair time is long, adds the maintenance cost of blisk.
Blisk is generally operational in the complex working conditions such as high pressure, high velocity air, high temperature, air-flow alternation, blade tip, blade edge are along easily wearing and tearing, being out of shape and other damage, wherein the wearing and tearing on blade tip, blade edge edge are the main failure mode of blade, be different from heat erosion damage or foreign object impact damage, blade base is mostly excellent.The blisk of aero-engine and gas turbine will overhaul after the use fixed time, the main contents of maintenance are exactly the maintenance of blade, because blade quantity is large, and manufacturing process is complicated, expensive, reblading cost is well below more renewal cost, its rehabilitation cost is only 5% of vane manufacturing cost, therefore how to repair the blade of experience wear or damage on blisk at short notice, recover the key issue that its serviceability has become blisk design, manufactured and use.
[summary of the invention]
The defect existed for above-mentioned prior art or deficiency, the object of the invention is to, and provides a kind of repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing; The method can complete the reparation of blade within a short period of time, recover the serviceability of blade, the present invention is conducive to the automaticity improving blisk Repair gene in addition, improve blisk Repair gene efficiency, overcome the problems such as blade profile precision that manual grinding blade brings, blade surface roughness be wayward, realize the Digital Control of integrated impeller blade repair process.
To achieve these goals, the present invention adopts following technical scheme:
Based on the repairing method of solid impeller disc of MICROBEAM PLASMA WELDING and electric spark finishing, comprise the following steps:
1) blisk is arranged on positioner, choosing a blade to be repaired is benchmark, and adjustment positioner attitude, makes this vane end faces be right against below line laser scanner;
2) adjust line laser scanner, making it move along being parallel to this direction, target blade wear face the 3 d-dem point obtaining integrated impeller blade abrading section profile, being obtained the welding track of integrated impeller blade abrading section by partitioning algorithm;
3) by step 2) in scan the welding track that obtains and produce control program by off-line programing, and control welding robot and the motion of positioner synchronous coordination by the programme-control that off-line programing produces, the microplasma cladding built-up welding of realize target blade wear position;
4) adjust positioner attitude, make the next abrading section of target blade be right against below line laser scanner; Repeat step 2) and step 3), until microplasma cladding heap is soldered all abrading sections of target blade;
5) positioner rotates to an angle, this angle is the distribution angle of blade on impeller, with next one wearing and tearing blade for microplasma cladding built-up welding target, repeat step 2)-4), until complete the microplasma cladding built-up welding at all blade wear positions of blisk;
6) by step 5) blisk of the cladding that obtains heap postwelding puts in hot isostatic press and carries out hip treatment;
7) will through step 6) the cladding heap postwelding blisk clamping that obtains is in three coordinate measuring machine, measure the blisk of cladding heap postwelding, complete leaf dish, cloud data collection that blade surface is complete, set up the actual threedimensional model of cladding heap postwelding blisk;
8) by the actual threedimensional model of contrast cladding heap postwelding blisk and the design threedimensional model of blisk, actual threedimensional model that cladding piles postwelding blisk is obtained relative to the trueness error of the design threedimensional model of blisk and deflection;
9) according to step 8) trueness error that obtains and deflection, determine spark machined surplus;
10) according to impeller blade design threedimensional model, blade profiling negative electrode is obtained, design electric discharging machining electrode;
11) through step 6) process the cladding heap postwelding blisk clamping that obtains on the workbench of five axle electric spark machine tools, according to step 9) allowance that obtains and step 10) blisk of electric discharging machining electrode to cladding heap postwelding that design carry out spark machined, obtain repairing rear blisk;
12) will through step 11) blisk clamping, in three coordinate measuring machine, is measured blisk after repairing, is set up the actual threedimensional model of blisk after repairing after the reparation that obtains; Then the actual threedimensional model repairing rear blisk is contrasted with design threedimensional model, obtain final trueness error and the final deformation amount of repairing rear blisk;
13) judge that whether blisk is qualified according to the final trueness error and final deformation amount of repairing rear blisk, when qualified, then adopt wet to blow sand, vibration finishing and shot-blast process carry out surface treatment to the blisk after repairing, and then cylindricalo grinding is carried out to the blade tip repairing rear blisk, reach the length dimension of blade, obtain the blisk repaired.
The present invention further improves and is: further comprising the steps of:
14) to step 13) after the whole impeller blade repaired carries out nondestructive inspection, finally carry out high-power test run.
The present invention further improves and is: step 2) be specially: line laser scanner moves along being parallel to direction, blade tip face with speed V, and is determined by formula V=Df; Wherein: V is laser line generator sweep speed, unit is mm/s; D is laser line generator scanning accuracy, and unit is mm, relevant with the data precision obtaining blade tip 3 d-dem dot profile; F is laser line generator scan frequency, and unit is Hz; The 3 d-dem point of two profiles in integrated impeller blade top is obtained, by (x by line laser scanner
i, y
i, z
i)={ (x
1i+ x
2i)/(n+1), (y
1i+ y
2i)/(n+1), (z
1i+ z
2i)/(n+1) }, obtain integrated impeller blade top wearing and tearing REPAIR WELDING track, wherein (x
i, y
i, z
i) be REPAIR WELDING track discrete point, (x
1i, y
1i, z
1i) and (x
2i, y
2i, z
2i) be the 3 d-dem point of two profiles in integrated impeller blade top, n is the number of weld passes of REPAIR WELDING.
The present invention further improves and is: step 3) in microplasma cladding built-up welding parameter be specially: constricting nozzle diameter: 0.6 ~ 1.2mm; Speed of welding: 0.25 ~ 0.65cms
-1; Welding current: 5 ~ 16A; Weldingvoltage: 22 ~ 35V; Argon shield gas flow is 24 ~ 36Lh
-1; Powder feeding rate is 3-10gs
-1.
The present invention further improves and is: step 6) be specially: blisk base substrate REPAIR WELDING obtained is put in hot isostatic press, is heated to 940 DEG C, and is pressurized to 200MPa, insulation constant voltage 1h; Then be cooled to 650 DEG C, and be decompressed to 110MPa, then be incubated constant voltage 2-4h; Finally be cooled to 500 DEG C again, and be decompressed to atmospheric pressure, and then cool to room temperature with the furnace.
The present invention further improves and is: step 11) concrete operations be: blisk base substrate level is arranged on the positioner workbench of five-axle linkage spark-erosion machine tool, adopt the spherical or cylindrical tool electrode of kerosene working solution, red copper material, the polarity arranging blisk is positive pole, select the electric source modes of homenergic square wave, after electric spark milling lathe parameter is set, respectively electric spark finished machined is carried out to integrated impeller blade top and blade edge edge according to spark machined surplus; Electric spark milling lathe parameter is: pulse width is 5-30 μ s, and inter-train pause is 15-40 μ s, and current density is 17.52-84.39A/cm
2, gap voltage is 35-70V.
The present invention further improves and is: step 12) in the detailed process that blisk sample carries out grinding be: blisk sample is installed on cylindrical grinder, grinding is carried out by the end face of cylindrical grinder to blisk sample blade, in grinding process, the rotating speed of blisk sample is 6000r/min, grinding speed is 120m/s, length feed speed is 0.01mm/min, cylindrical grinder adopts water base type of cooling water filling, wherein, the flow of water is 90L/min, lift is 5.5m.
The object of this invention is to provide a kind of integrated impeller blade recovery technique based on MICROBEAM PLASMA WELDING and electric spark finishing, the basis of blade profile is repaired wearing and tearing or the damage on leaf top and blade edge edge quickly and accurately, complete manufacturing again of blade, recover the serviceability of blade.Utilize the method for MICROBEAM PLASMA WELDING at blade tip, blade edge along cladding deposited metal, complete blade tip, blade edge along the cladding built-up welding of wearing and tearing or damage location; Electric spark finished machined is carried out to blade tip, blade edge edge, blade tip cladding surfacing part, finally utilizes wet technique of blowing sand to get rid of the consolidation layer occurred in blade spark machined, and polishing is carried out to blade; Blisk profile repaired is contained on cylindrical grinder, carries out the high-speed grinding of blisk cylindrical and reaches the length dimension of blade, completes integrated impeller blade top, blade edge along the repair of wearing and tearing or damage.It is relative to prior art, has following beneficial effect:
1) MICROBEAM PLASMA WELDING arc stability is good, and arc column straightness is good, concentration of energy, and temperature is high, and speed of welding is fast, can save welding material, and welding cladding layer is fine and close, can improve REPAIR WELDING quality and performance.
2) spark machined can improve machining accuracy, shortens the process-cycle, cut down finished cost, and realizes the Digital Control of process.Spark erosion technique compared with traditional milling, Grinding Technology by the strength of materials, hardness, etc. the impact of factor, there is not the impact of cutting force and heat in metal cutting in process, the fine finishining spark machined therefore for abrading section, integrated impeller blade top cladding heap postwelding has a clear superiority in.
3) after above-mentioned steps, just can realize the repair of abrading section, integrated impeller blade top fast, this technique compares human weld and manual grinding has very large advantage, be conducive to the automation realizing blisk reparation, shorten repair time, be beneficial to the continuity of blade profile, improve the yield rate of REPAIR WELDING blisk.
Blisk Intelligent welding of the present invention, electric spark finishing technique, the position optical detection of blade REPAIR WELDING, automatically generate welding track, automatically built-up welding is completed by three-axis robot, diaxon positioner system, compare with manual welding method, not only increase welding track precision, quality, effect more than 5 times can also be improved; The electric spark finishing of surfacing part, by the analysis to blade profile threedimensional model, design blade profile electric discharging machining electrode, considers the location of electrospark electrode, feeding path, by the measurement to built-up welding pattern simultaneously, accurate control spark machined amount, compared with manual grinding, polishing, surface roughness can reach more than Ra0.2, and dimensional accuracy can reach 0.02mm, achieve the built-up welding of blade intelligence, electric spark finishing Full-numerical-control process, improve effect more than 5 times simultaneously.
[accompanying drawing explanation]
Fig. 1 is the flow chart that one's duty buys that restorative procedure.
[detailed description of the invention]
Refer to shown in Fig. 1, the present invention is based on the repairing method of solid impeller disc of MICROBEAM PLASMA WELDING and electric spark finishing, comprise the following steps:
1) greasy dirt on integrated impeller blade surface, corrosion is washed.Blisk is arranged on positioner, and choosing certain blade to be repaired is benchmark, and adjustment positioner attitude, makes this vane end faces be right against below line laser scanner;
2) line laser scanner is adjusted, it is made to move along being parallel to this direction, target blade wear face the 3 d-dem point obtaining integrated impeller blade abrading section profile, the welding track of integrated impeller blade abrading section is obtained by partitioning algorithm, keep the pose of blisk in positioner constant, line laser scanner returns to safety zone;
3) by step 2) in scan the welding track that obtains and produce control program by off-line programing, and control welding robot and the motion of positioner synchronous coordination by the programme-control that off-line programing produces, the microplasma cladding built-up welding of realize target blade wear position;
4) positioner attitude is adjusted, the next abrading section of target blade is made to be right against below line laser scanner, line laser scanner turns back to scanning area, repeats step 2) and step 3), until microplasma cladding heap is soldered all abrading sections of target blade;
5) positioner rotates to an angle, this angle is the distribution angle of blade on impeller, with next one wearing and tearing blade for microplasma cladding built-up welding target, repeat step 2)-4), until complete the microplasma cladding built-up welding at all blade wear positions of blisk.
6) by step 5) blisk of the cladding that obtains heap postwelding puts in hot isostatic press and carries out hip treatment, and eliminate postwelding and be present in internal stress in metal, improve plasticity and the intensity of blade, extend blade life-span of creep rupture;
7) will through step 6) the cladding heap postwelding blisk clamping that obtains is in three coordinate measuring machine, and adopt mechanical measurement mode to measure the blisk of cladding heap postwelding, complete leaf dish, cloud data collection that blade surface is complete, set up the actual threedimensional model of cladding heap postwelding blisk;
8) by the actual threedimensional model of contrast cladding heap postwelding blisk and the design threedimensional model of blisk, actual threedimensional model that cladding piles postwelding blisk is obtained relative to the trueness error of the design threedimensional model of blisk and deflection;
9) according to step 8) trueness error that obtains and deflection, determine spark machined surplus;
10) according to the design threedimensional model of impeller blade, adopt the way of " counter copy " to obtain blade profiling negative electrode, design electric discharging machining electrode.
11) through step 6) process the cladding heap postwelding blisk clamping that obtains on the workbench of five axle electric spark machine tools, according to step 9) allowance that obtains and step 10) blisk of electric discharging machining electrode to cladding heap postwelding that design carry out spark machined, obtain repairing rear blisk;
Step 11) be specially: select five-axle linkage spark-erosion machine tool, for the cladding welding position on integrated impeller blade top, select electric discharging machining electrode radial close to path along passage between leaf, arrive finished machined position, adopt tangential admission mode, respectively electric spark finished machined is carried out to the leaf basin of blade, blade back; For the cladding welding position at integrated impeller blade edge, chosen axis, to close to path, arrives working position, adopts along the normal direction feeding mode perpendicular to blade edge surface, carries out electric spark finished machined respectively to the dual-side edge of blade.
12) will through step 11) blisk clamping is in three coordinate measuring machine after the reparation that obtains, and blisk after adopting mechanical measurement mode to measure to repair, sets up the actual threedimensional model of blisk after repairing; Then the actual threedimensional model repairing rear blisk is contrasted with design threedimensional model, obtain final trueness error and the final deformation amount of repairing rear blisk;
13) judge that whether blisk is qualified according to the final trueness error and final deformation amount of repairing rear blisk; When defective, repeat step 7)-9) and step 11); When qualified, then adopt wet to blow sand, vibration finishing and shot-blast process carry out surface treatment to the blisk after repairing, and then carries out cylindricalo grinding to the blade tip of blisk after repairing, reach the length dimension of blade, obtain the blisk repaired.
14), after nondestructive inspection being carried out to the whole impeller blade repaired, finally high-power test run is carried out.
Step 2) be specially:
Line laser scanner moves along being parallel to direction, blade tip face with speed V, and is determined by formula V=Df.Wherein: V is laser line generator sweep speed, unit is mm/s; D is laser line generator scanning accuracy, and unit is mm, relevant with the data precision obtaining blade tip 3 d-dem dot profile; F is laser line generator scan frequency, and unit is Hz.The 3 d-dem point of two profiles in integrated impeller blade top is obtained, by (x by line laser scanner
i, y
i, z
i)={ (x
1i+ x
2i)/(n+1), (y
1i+ y
2i)/(n+1), (z
1i+ z
2i)/(n+1) }, integrated impeller blade top wearing and tearing REPAIR WELDING track can be obtained, wherein (x
i, y
i, z
i) be REPAIR WELDING track discrete point, (x
1i, y
1i, z
1i) and (x
2i, y
2i, z
2i) be the 3 d-dem point of two profiles in integrated impeller blade top, n is the number of weld passes of REPAIR WELDING.
Step 3) in microplasma cladding built-up welding parameter be specially:
Constricting nozzle diameter: 0.6 ~ 1.2mm; Speed of welding: 0.25 ~ 0.65cms
-1; Welding current: 5 ~ 16A; Weldingvoltage: 22 ~ 35V; Argon shield gas flow is 24 ~ 36Lh
-1; Powder feeding rate is 3-10gs
-1.
Step 6) be specially:
Blisk base substrate REPAIR WELDING obtained is put in hot isostatic press, is heated to 940 DEG C, and is pressurized to 200MPa, insulation constant voltage 1h; Then be cooled to 650 DEG C, and be decompressed to 110MPa, then be incubated constant voltage 2-4h; Finally be cooled to 500 DEG C again, and be decompressed to atmospheric pressure, and then cool to room temperature with the furnace.
Step 7) concrete operations be:
Adopt mechanical measurement mode (manual programming adds automatic measurement) that the accurate measurement of REPAIR WELDING blade-shaped face data point can be completed, obtain abundant blade-shaped face cloud data.
Step 11) concrete operations be:
Blisk base substrate level is arranged on the positioner workbench of five-axle linkage spark-erosion machine tool, adopt the spherical or cylindrical tool electrode of kerosene working solution, red copper material, the polarity arranging blisk is positive pole, select the electric source modes of homenergic square wave, after spark-erosion machine tool parameter is set, respectively electric spark finished machined is carried out to integrated impeller blade top and blade edge edge according to spark machined surplus;
Described electric spark milling lathe parameter is: pulse width is 5-30 μ s, and inter-train pause is 15-40 μ s, and current density is 17.52-84.39A/cm
2, gap voltage is 35-70V.
Step 12) in the detailed process that blisk sample carries out grinding be: blisk sample is installed on cylindrical grinder, grinding is carried out by the end face of cylindrical grinder to blisk sample blade, in grinding process, the rotating speed of blisk sample is 6000r/min, grinding speed is 120m/s, and length feed speed is 0.01mm/min, and cylindrical grinder adopts water base type of cooling water filling, wherein, the flow of water is 90L/min, lift is 5.5m.
Claims (7)
1., based on a repairing method of solid impeller disc for MICROBEAM PLASMA WELDING and electric spark finishing, it is characterized in that, comprise the following steps:
1) blisk is arranged on positioner, choosing a blade to be repaired is benchmark, and adjustment positioner attitude, makes this vane end faces be right against below line laser scanner;
2) adjust line laser scanner, making it move along being parallel to this direction, target blade wear face the 3 d-dem point obtaining integrated impeller blade abrading section profile, being obtained the welding track of integrated impeller blade abrading section by partitioning algorithm;
3) by step 2) in scan the welding track that obtains and produce control program by off-line programing, and control welding robot and the motion of positioner synchronous coordination by the programme-control that off-line programing produces, the microplasma cladding built-up welding of realize target blade wear position;
4) adjust positioner attitude, make the next abrading section of target blade be right against below line laser scanner; Repeat step 2) and step 3), until microplasma cladding heap is soldered all abrading sections of target blade;
5) positioner rotates to an angle, this angle is the distribution angle of blade on impeller, with next one wearing and tearing blade for microplasma cladding built-up welding target, repeat step 2)-4), until complete the microplasma cladding built-up welding at all blade wear positions of blisk;
6) by step 5) blisk of the cladding that obtains heap postwelding puts in hot isostatic press and carries out hip treatment;
7) will through step 6) the cladding heap postwelding blisk clamping that obtains is in three coordinate measuring machine, measure the blisk of cladding heap postwelding, complete leaf dish, cloud data collection that blade surface is complete, set up the actual threedimensional model of cladding heap postwelding blisk;
8) by the actual threedimensional model of contrast cladding heap postwelding blisk and the design threedimensional model of blisk, actual threedimensional model that cladding piles postwelding blisk is obtained relative to the trueness error of the design threedimensional model of blisk and deflection;
9) according to step 8) trueness error that obtains and deflection, determine spark machined surplus;
10) according to impeller blade design threedimensional model, blade profiling negative electrode is obtained, design electric discharging machining electrode;
11) through step 6) process the cladding heap postwelding blisk clamping that obtains on the workbench of five axle electric spark machine tools, according to step 9) allowance that obtains and step 10) blisk of electric discharging machining electrode to cladding heap postwelding that design carry out spark machined, obtain repairing rear blisk;
12) will through step 11) blisk clamping, in three coordinate measuring machine, is measured blisk after repairing, is set up the actual threedimensional model of blisk after repairing after the reparation that obtains; Then the actual threedimensional model repairing rear blisk is contrasted with design threedimensional model, obtain final trueness error and the final deformation amount of repairing rear blisk;
13) judge that whether blisk is qualified according to the final trueness error and final deformation amount of repairing rear blisk; When defective, repeat step 7)-9) and step 11); When qualified, then adopt wet to blow sand, vibration finishing and shot-blast process carry out surface treatment to the blisk after repairing, and then carries out cylindricalo grinding to the blade tip of blisk after repairing, reach the length dimension of blade, obtain the blisk repaired.
2. the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing according to claim 1, is characterized in that, further comprising the steps of:
14) to step 13) after the whole impeller blade repaired carries out nondestructive inspection, finally carry out high-power test run.
3. the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing according to claim 1, it is characterized in that, step 2) be specially: line laser scanner moves along being parallel to direction, blade tip face with speed V, and is determined by formula V=Df; Wherein: V is laser line generator sweep speed, unit is mm/s; D is laser line generator scanning accuracy, and unit is mm, relevant with the data precision obtaining blade tip 3 d-dem dot profile; F is laser line generator scan frequency, and unit is Hz; The 3 d-dem point of two profiles in integrated impeller blade top is obtained, by (x by line laser scanner
i, y
i, z
i)={ (x
1i+ x
2i)/(n+1), (y
1i+ y
2i)/(n+1), (z
1i+ z
2i)/(n+1) }, obtain integrated impeller blade top wearing and tearing REPAIR WELDING track, wherein (x
i, y
i, z
i) be REPAIR WELDING track discrete point, (x
1i, y
1i, z
1i) and (x
2i, y
2i, z
2i) be the 3 d-dem point of two profiles in integrated impeller blade top, n is the number of weld passes of REPAIR WELDING.
4. the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing according to claim 1, is characterized in that, step 3) in microplasma cladding built-up welding parameter be specially: constricting nozzle diameter: 0.6 ~ 1.2mm; Speed of welding: 0.25 ~ 0.65cms
-1; Welding current: 5 ~ 16A; Weldingvoltage: 22 ~ 35V; Argon shield gas flow is 24 ~ 36Lh
-1; Powder feeding rate is 3-10gs
-1.
5. the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing according to claim 1, it is characterized in that, step 6) be specially: blisk base substrate REPAIR WELDING obtained is put in hot isostatic press, be heated to 940 DEG C, and be pressurized to 200MPa, insulation constant voltage 1h; Then be cooled to 650 DEG C, and be decompressed to 110MPa, then be incubated constant voltage 2-4h; Finally be cooled to 500 DEG C again, and be decompressed to atmospheric pressure, and then cool to room temperature with the furnace.
6. the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing according to claim 1, it is characterized in that, step 11) concrete operations be: blisk base substrate level is arranged on the positioner workbench of five-axle linkage spark-erosion machine tool, adopt kerosene working solution, spherical or the cylindrical tool electrode of red copper material, the polarity arranging blisk is positive pole, select the electric source modes of homenergic square wave, respectively electric spark finished machined is carried out to integrated impeller blade top and blade edge edge according to spark machined surplus after electric spark milling lathe parameter is set, electric spark milling lathe parameter is: pulse width is 5-30 μ s, and inter-train pause is 15-40 μ s, and current density is 17.52-84.39A/cm
2, gap voltage is 35-70V.
7. the repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing according to claim 1, it is characterized in that, step 12) in the detailed process that blisk sample carries out grinding be: blisk sample is installed on cylindrical grinder, grinding is carried out by the end face of cylindrical grinder to blisk sample blade, in grinding process, the rotating speed of blisk sample is 6000r/min, grinding speed is 120m/s, length feed speed is 0.01mm/min, cylindrical grinder adopts water base type of cooling water filling, wherein, the flow of water is 90L/min, lift is 5.5m.
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|---|---|---|---|
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|---|---|---|---|
| CN201510289304.9A CN105057969B (en) | 2015-05-29 | 2015-05-29 | Repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing |
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| CN109249179A (en) * | 2017-07-13 | 2019-01-22 | 鞍钢股份有限公司 | A kind of method that mechanical equipment abnormal deformation is quickly repaired |
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| CN108274187A (en) * | 2018-04-27 | 2018-07-13 | 苏州艾弗伦智能技术有限公司 | A kind of complex curved surface parts defect repair system and restorative procedure |
| CN109500496A (en) * | 2018-11-23 | 2019-03-22 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of aero-engine titanium alloy blade injure after repair method |
| CN109623575A (en) * | 2018-12-17 | 2019-04-16 | 中国航发动力股份有限公司 | A kind of sbrasive belt grinding method of reblading |
| CN109676319A (en) * | 2019-03-07 | 2019-04-26 | 岳阳大陆激光技术有限公司 | Fan blade type face multistation prosthetic device and its application method |
| CN109676319B (en) * | 2019-03-07 | 2023-08-29 | 岳阳大陆激光技术有限公司 | Multi-station repairing device for fan blade profile and using method thereof |
| CN110716502A (en) * | 2019-11-27 | 2020-01-21 | 北京航空航天大学 | Tool path generation method and device for engine blade repair |
| CN110716502B (en) * | 2019-11-27 | 2020-10-23 | 北京航空航天大学 | Tool path generation method and device for engine blade repair |
| CN112453824A (en) * | 2020-11-18 | 2021-03-09 | 杨媛媛 | Titanium alloy compressor blade welding repair method |
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