CN105057969B - Repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing - Google Patents

Abstract

The invention discloses a method for repairing an integral blade disc based on micro-beam plasma welding and electric spark finishing. The micro-beam plasma welding method is used to clad and surfacing metal on the top and edge of the blade to complete the repair of the worn or damaged parts of the top and edge of the blade. Cladding and surfacing; EDM finishing is performed on the top of the blade, the edge of the blade, and the cladding and surfacing parts of the blade, and finally the fused layer that appears in the EDM of the blade is removed by wet sand blowing technology, and the blade is polished Processing: install the blisk whose profile has been repaired on the cylindrical grinding machine, perform high-speed grinding on the outer circle of the blisk to reach the length of the blade, and complete the repair of the top of the blisk and the edge of the blade for wear or damage; The invention quickly and accurately repairs the wear or damage of the blade top and the edge of the blade on the basis of the profile of the blade, completes the remanufacturing of the blade, and restores the service performance of the blade.

Description

Blisk Repair Method Based on Microbeam Plasma Welding and EDM

【Technical field】

The invention belongs to the technical field of blade repair, and relates to a method for repairing an integral blade disk based on micro-beam plasma welding and electric spark finishing.

【Background technique】

The structure of the overall blisk is very complex, the channel opening is poor, the blade is thin, the bending is large, and it is easy to deform. Advanced composite materials such as aluminum compounds not only increase the difficulty of manufacturing, but also pose serious challenges to the maintenance of blisks. At present, the overall blisk repair in China mainly relies on manual welding and manual grinding, which has low repair accuracy and long repair time, which increases the maintenance cost of the overall blisk.

The overall blisk generally works in complex working conditions such as high pressure, high-speed airflow, high temperature, and alternating airflow. The tip and edge of the blade are prone to wear, deformation, and other damage. Among them, the wear of the tip and edge of the blade is the main damage mode of the blade. Unlike thermal corrosion damage or foreign object impact damage, the blade matrix is mostly intact. The overall blisks of aero-engines and gas turbines need to be overhauled after a specified period of use. The main content of the overhaul is the overhaul of the blades. Due to the large number of blades, the complicated manufacturing process, and the high price, the cost of repairing blades is far lower than the cost of replacing new ones. Its repair cost is only 5% of the blade manufacturing cost, so how to repair the worn or damaged blades on the blisk in a short time and restore its performance has become a key issue in the design, manufacture and use of the blisk.

【Content of invention】

In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to provide a method for repairing the overall blisk based on micro-beam plasma welding and electric spark finishing; this method can complete the repair of the blade in a relatively short period of time, Restoring the service performance of the blade, and in addition, the present invention is conducive to improving the automation degree of the overall blisk repair process, improving the efficiency of the overall blisk repair process, and overcoming the problems of blade surface accuracy and blade surface roughness caused by manual grinding of blades, etc. Realize the digital control of the overall blisk blade repair process.

In order to achieve the above object, the present invention adopts the following technical solutions:

The overall blisk repair method based on micro-beam plasma welding and electric spark finishing includes the following steps:

1) Install the blisk on the positioner, select a blade to be repaired as a reference, and adjust the attitude of the positioner so that the end face of the blade is directly below the line laser scanner;

2) Adjust the line laser scanner so that it moves in a direction parallel to the worn surface of the target blade to obtain the three-dimensional discrete points of the contour of the worn part of the blade of the overall blisk, and obtain the welding trajectory of the worn part of the blade of the blisk through a segmentation algorithm;

3) The welding trajectory scanned in step 2) is used to generate a control program through offline programming, and the program generated by offline programming is used to control the synchronous and coordinated movement of the welding robot and the positioner to achieve micro-beam plasma cladding surfacing on the worn part of the target blade ;

4) Adjust the posture of the positioner so that the next worn part of the target blade is directly below the line laser scanner; repeat steps 2) and 3) until all worn parts of the target blade are finished by micro-beam plasma cladding and surfacing;

5) The positioner rotates at a certain angle, which is the distribution angle of the blades on the impeller, and the next worn blade is the microbeam plasma cladding surfacing welding target, repeat steps 2)-4) until all blades of the overall blisk are worn Micro-beam plasma cladding surfacing welding;

6) putting the blisk obtained in step 5) into a hot isostatic pressing machine for hot isostatic pressing;

7) Clamp the blisk after the hot isostatic pressing process obtained in step 6 into a three-coordinate measuring machine, measure the blisk after the hot isostatic pressing, and complete the complete point cloud data of the blisk and the blade surface Acquisition and establishment of the actual 3D model of the blisk after hot isostatic pressing;

8) By comparing the actual 3D model of the blisk after HIP treatment with the design 3D model of the blisk, the difference between the actual 3D model of the blisk after HIP treatment and the design 3D model of the blisk is obtained. Accuracy error and deformation;

9) According to the precision error and the amount of deformation obtained in step 8), determine the EDM allowance;

10) Design the three-dimensional model according to the blisk blade, obtain the profiling cathode of the blade, and design the EDM electrode;

11) Clamp the blisk after the hot isostatic pressing treatment obtained in step 6) onto the workbench of the five-axis EDM machine tool, and according to the machining allowance obtained in step 9) and the EDM designed in step 10) The machining electrode conducts electric discharge machining on the blisk after hot isostatic pressing to obtain the blisk after repair;

12) Clamp the blisk after repair obtained in step 11) into a three-coordinate measuring machine, measure the blisk after repair, and establish the actual three-dimensional model of the blisk after repair; The 3D model is compared with the design 3D model to obtain the final accuracy error and final deformation of the whole blisk after repair;

13) According to the final accuracy error and final deformation of the whole blisk after repair, it is judged whether the whole blisk is qualified. If it is qualified, the surface treatment of the whole blisk after repair is carried out by wet sand blowing, vibrating finishing and shot peening. , and then perform cylindrical grinding on the top of the blade of the repaired blisk to reach the length of the blade, and obtain the repaired blisk.

The further improvement of the present invention is: also comprise the following steps:

14) After performing non-destructive testing on the entire blisk blade repaired in step 13), a high-power test run is finally carried out.

The further improvement of the present invention is: step 2) is specifically: the line laser scanner moves with speed V along the direction parallel to the top surface of the blade, and is determined by the formula V=Df; wherein: V is the scanning speed of the line laser scanner, and the unit is mm/s; D is the scanning accuracy of the line laser scanner, the unit is mm, which is related to the data accuracy of obtaining the three-dimensional discrete point profile of the blade tip; f is the scanning frequency of the line laser scanner, the unit is Hz; The three-dimensional discrete points of the two contours at the top of the leaf disk blade, through ( _xi ,y _i , _zi )={(x _1i +x _2i )/(n+1), (y _1i +y _2i )/(n+ 1), (z _1i +z _2i )/(n+1)}, to obtain the welding repair trajectory of the blade tip wear of the blisk, where (x _i , y _i , z _i ) are the discrete points of the welding repair trajectory, (x _1i ,y _1i ,z _1i ) and (x _2i ,y _2i ,z _2i ) are the three-dimensional discrete points of the two contours at the top of the blisk blade, and n is the number of weld passes for welding repair.

The further improvement of the present invention lies in: the parameters of the micro-beam plasma cladding and surfacing welding in step 3) are specifically: compression nozzle diameter: 0.6-1.2mm; welding speed: 0.25-0.65cm·s ^-1 ; welding current: 5-16A; Welding voltage: 22~35V; flow rate of argon shielding gas: 24~36L·h ^-1 ; powder feeding rate: 3-10g·s ^-1 .

The further improvement of the present invention lies in: step 6) is specifically: put the blisk green body obtained by welding and repairing into a hot isostatic press, heat it to 940° C., pressurize it to 200 MPa, and keep it under constant pressure for 1 hour; then Cool to 650°C, and decompress to 110MPa, then keep the temperature at constant pressure for 2-4h; finally cool to 500°C, and depressurize to atmospheric pressure, and then cool to room temperature with the furnace.

The further improvement of the present invention lies in: the specific operation of step 11) is: horizontally install the blisk body on the positioner workbench of the five-axis linkage EDM machine tool, and use kerosene working fluid and a spherical or cylindrical tool made of copper Electrode, set the polarity of the overall blisk to positive, select the power supply mode of equal energy square wave, set the parameters of the EDM machine tool, and then perform EDM finishing on the top and edge of the overall blisk according to the EDM allowance ; The parameters of the EDM machine tool are: pulse width 5-30μs, pulse gap 15-40μs, current density 17.52-84.39A/cm ² , gap voltage 35-70V.

The further improvement of the present invention is: the specific process of grinding the blisk sample in step 13) is: the blisk sample is installed on the cylindrical grinder, and the end surface of the blade on the blisk sample is ground by the cylindrical grinder. Grinding. During the grinding process, the rotation speed of the blisk sample is 6000r/min, the linear speed of the grinding wheel is 120m/s, and the longitudinal feed speed is 0.01mm/min. The flow rate is 90L/min and the head is 5.5m.

The purpose of the present invention is to provide a whole blisk blade repair technology based on micro-beam plasma welding and electric spark finishing, which can quickly and accurately repair the wear or damage of the blade tip and blade edge on the basis of the blade profile, and complete the blade The remanufacturing of the blade restores the performance of the blade. Use the method of micro-beam plasma welding to clad and surfacing metal on the tip of the blade and the edge of the blade to complete the cladding and surfacing of the worn or damaged parts of the tip of the blade and the edge of the blade; EDM finishing, and finally use the wet sand blowing process to remove the fused layer that appeared in the EDM of the blade, and polish the blade; install the whole leaf disc with the repaired profile on the cylindrical grinder, and carry out the overall The outer circle of the blisk is ground at high speed to reach the length of the blade, and the repair work of the top of the blisk blade and the edge of the blade is worn or damaged. Compared with the prior art, it has the following beneficial effects:

1) Micro-beam plasma welding has good arc stability, good arc column straightness, concentrated energy, high temperature and fast welding speed, which can save welding materials, and the welding cladding layer is dense, which can improve the quality and performance of welding repair.

2) EDM can improve the machining accuracy, shorten the machining cycle, reduce the machining cost, and realize the digital control of the machining process. Compared with traditional milling and grinding technology, EDM technology is not affected by material strength, hardness, and other factors. There is no cutting force and cutting heat in the processing process. Finishing EDM after overlay welding has obvious advantages.

3) After the above steps, the repair of the worn part of the top of the blisk can be quickly realized. Compared with manual welding and manual grinding, this process has great advantages, which is conducive to realizing the automation of the repair of the blisk and shortening the repair time. It is beneficial to the continuity of the profile of the blade and improves the yield of the whole blisk by welding and repairing.

The intelligent welding of the whole blisk and the EDM finishing technology of the present invention, the optical detection of the blade welding repair position, the automatic generation of the welding track, and the automatic completion of the surfacing welding by the three-axis robot and the two-axis positioner system, compared with the manual welding method, It not only improves the accuracy and quality of the welding track, but also improves the efficiency by more than 5 times; for the EDM finishing of the surfacing welding part, through the analysis of the three-dimensional model of the blade surface, the EDM electrode for the blade surface is designed, and the EDM electrode is also considered The positioning and feed path of the surfacing welding can be precisely controlled by measuring the surface of the surfacing welding. Compared with manual grinding and polishing, the surface roughness can reach Ra0.2 or more, and the dimensional accuracy can reach 0.02mm. Blade intelligent surfacing, electric spark finishing full CNC machining process, while improving efficiency by more than 5 times.

【Description of drawings】

Fig. 1 is a flowchart of the repair method of the present invention.

【detailed description】

Please refer to shown in Fig. 1, the present invention is based on micro-beam plasma welding and the overall blisk repair method of electric spark finishing, comprises the following steps:

1) Clean off the oil and rust on the surface of the blisk blades. Install the blisk on the positioner, select a blade to be repaired as a reference, and adjust the position of the positioner so that the end face of the blade is directly below the line laser scanner;

2) Adjust the line laser scanner so that it moves in a direction parallel to the target blade wear surface to obtain the three-dimensional discrete points of the contour of the wear part of the blisk blade, and obtain the welding trajectory of the wear part of the blisk blade through a segmentation algorithm, keeping the displacement The pose of the blisk in the machine remains unchanged, and the line laser scanner returns to the safe area;

3) The welding trajectory scanned in step 2) is used to generate a control program through offline programming, and the program generated by offline programming is used to control the synchronous and coordinated movement of the welding robot and the positioner to achieve micro-beam plasma cladding surfacing on the worn part of the target blade ;

4) Adjust the posture of the positioner so that the next worn part of the target blade is directly below the line laser scanner, and the line laser scanner returns to the scanning area, repeating steps 2) and 3) until the micro-beam plasma cladding surfacing Complete all worn parts of the target blade;

5) The positioner rotates at a certain angle, which is the distribution angle of the blades on the impeller, and the next worn blade is the microbeam plasma cladding surfacing welding target, repeat steps 2)-4) until all blades of the overall blisk are worn Part of the micro-beam plasma cladding surfacing.

6) Put the whole blisk after the hot isostatic pressing treatment obtained in step 5) into a hot isostatic pressing machine and carry out hot isostatic pressing treatment to eliminate the internal stress existing in the metal after welding and improve the plasticity and durability of the blade. Strength, prolonging the creep fracture life of the blade;

7) Clamp the whole blisk after the hot isostatic pressing treatment obtained in step 6) into a three-coordinate measuring machine, and measure the whole blisk after the hot isostatic pressing by a mechanical measurement method, and complete the blisk and blade surface Complete point cloud data collection, establish the actual 3D model of the whole blisk after hot isostatic pressing;

8) By comparing the actual 3D model of the blisk after HIP treatment with the design 3D model of the blisk, the difference between the actual 3D model of the blisk after HIP treatment and the design 3D model of the blisk is obtained. Accuracy error and deformation;

9) According to the precision error and the amount of deformation obtained in step 8), determine the EDM allowance;

10) According to the design three-dimensional model of the blisk blade, adopt the method of "reverse copy" to obtain the profiling cathode of the blade, and design the EDM electrode.

11) Clamp the blisk after the hot isostatic pressing treatment obtained in step 6) onto the workbench of the five-axis EDM machine tool, and according to the machining allowance obtained in step 9) and the EDM designed in step 10) The machining electrode conducts electric discharge machining on the blisk after hot isostatic pressing to obtain the blisk after repair;

Step 11) is specifically: select a five-axis linkage EDM machine tool, aiming at the cladding and welding part of the top of the overall blisk blade, select the EDM electrode to approach the path radially along the inter-blade passage, and reach the finishing position, and use tangential cutting In this way, the blade pot and blade back of the blade are respectively subjected to EDM finishing; for the cladding welding part of the edge of the overall blisk blade, the axial approach path is selected to reach the processing part, and the method is adopted along the vertical direction of the blade edge surface. In the feed mode, the edges on both sides of the blade are respectively subjected to EDM finishing.

12) Clamp the repaired blisk obtained in step 11) into a three-coordinate measuring machine, measure the repaired blisk by mechanical measurement, and establish an actual three-dimensional model of the repaired blisk; The actual 3D model of the blisk is compared with the design 3D model to obtain the final accuracy error and final deformation of the blisk after repair;

13) According to the final accuracy error and final deformation of the overall blisk after repair, judge whether the overall blisk is qualified; if unqualified, repeat steps 7)-9) and step 11); when qualified, use wet sand blowing, Vibration finishing and shot peening process are used to surface-treat the repaired blisk, and then the top of the blade is cylindrically ground to reach the length of the blade, and the repaired blisk is obtained.

14) After non-destructive testing of the repaired blisk blades, a high-power test run is finally carried out.

Step 2) is specifically:

The line laser scanner moves at a speed V in a direction parallel to the top surface of the blade, and is determined by the formula V=Df. Among them: V is the scanning speed of the line laser scanner, the unit is mm/s; D is the scanning accuracy of the line laser scanner, the unit is mm, which is related to the data accuracy of obtaining the three-dimensional discrete point profile at the top of the blade; f is the scanning speed of the line laser scanner Frequency, in Hz. The three-dimensional discrete points of the two contours at the top of the blade of the overall blisk are obtained by the line laser scanner, and ( _xi , y _i , z _i )={(x _1i +x _2i )/(n+1), (y _1i + y _2i )/(n+1), (z _1i +z _2i )/(n+1)}, we can get the wear and welding repair track of the blade tip of the blisk, where ( _xi , y _i , z _i ) is the welding The discrete points of the repair trajectory, (x _1i , y _1i , z _1i ) and (x _2i , y _2i , z _2i ) are the three-dimensional discrete points of the two contours at the top of the blisk blade, and n is the number of weld passes for welding repair.

Step 3) The parameters of micro-beam plasma cladding and surfacing welding are specifically:

Compression nozzle diameter: 0.6～1.2mm; Welding speed: 0.25～ ^0.65cm ·s ^-1 ; Welding current: 5～16A; Welding voltage: 22～35V; The powder rate is 3-10 g·s ^-1 .

Step 6) is specifically:

Put the blisk body obtained by welding and repairing into a hot isostatic press, heat it to 940°C, pressurize it to 200MPa, keep it at constant pressure for 1h; then cool it down to 650°C, decompress it to 110MPa, and keep it warm Constant pressure for 2-4h; finally cooled to 500 ° C, and reduced to atmospheric pressure, and then cooled to room temperature with the furnace.

The concrete operation of step 7) is:

The mechanical measurement method (manual programming plus automatic measurement) can complete the accurate measurement of the data points of the welded repaired blade surface, and obtain enough point cloud data of the blade surface.

The concrete operation of step 11) is:

Install the blisk body horizontally on the positioner workbench of the five-axis linkage EDM machine tool, use kerosene working fluid, and spherical or cylindrical tool electrodes made of copper, set the polarity of the blisk to positive, and use equal energy Square wave power supply mode, after setting the parameters of the EDM machine tool, perform EDM finishing on the top of the overall blisk blade and the edge of the blade according to the EDM allowance;

The parameters of the electric spark milling machine tool are: pulse width 5-30μs, pulse gap 15-40μs, current density 17.52-84.39A/cm ² , gap voltage 35-70V.

The specific process of grinding the blisk sample in step 13) is: the blisk sample is installed on the cylindrical grinder, and the end face of the blade on the blisk sample is ground by the cylindrical grinder, during the grinding process , the rotational speed of the blisk sample is 6000r/min, the linear speed of the grinding wheel is 120m/s, the longitudinal feed speed is 0.01mm/min, and the cylindrical grinder adopts water-based cooling method to inject water, wherein the flow rate of water is 90L/min, The head is 5.5m.

Claims (5)

1. A kind of 1. repairing method of solid impeller disc based on MICROBEAM PLASMA WELDING and electric spark finishing, it is characterised in that including with Lower step：

   1) blisk is arranged on positioner, on the basis of choosing a blade to be repaired, adjusts positioner posture, make the leaf Piece end face is right against below line laser scanner；

   2) line laser scanner is adjusted, makes its edge move to obtain integrated impeller blade mill parallel to the target blade wear face direction The 3 d-dem point of position profile is damaged, the welding track of integrated impeller blade abrading section is obtained by partitioning algorithm；

   3) welding track that scanning obtains in step 2) is produced into control program by off-line programing, and produced by off-line programing Programme-control control welding robot and positioner synchronous coordination motion, realize that target blade wear position microplasma melts Cover built-up welding；

   4) positioner posture is adjusted, next abrading section of target blade is right against below line laser scanner；Repeat to walk It is rapid 2) and step 3), until microplasma cladding heap is soldered all abrading sections of target blade；

   5) positioner rotates to an angle, and the angle is distribution angle of the blade on impeller, using next abrasion blade to be micro- Beam plasma cladding built-up welding target, repeat step 2) -4), microbeam until completing all blade wear positions of blisk etc. Ion cladding built-up welding；

   6) blisk for the microplasma cladding heap postwelding that step 5) obtains is put into hot isostatic press and carries out heat etc. Static pressure processing；

   7) into three coordinate measuring machine, high temperature insostatic pressing (HIP) will be measured by blisk clamping after the hip treatment that step 6) obtains Blisk after processing, the complete cloud data collection of leaf dish, blade surface is completed, establishes overall leaf after hip treatment The actual threedimensional model of disk；

   8) by contrasting the design threedimensional model of the actual threedimensional model and blisk of blisk after hip treatment, obtain After to hip treatment the actual threedimensional model of blisk relative to blisk design threedimensional model trueness error And deflection；

   9) trueness error and deflection obtained according to step 8), determines electrical discharge machining surplus；

   10) threedimensional model is designed according to impeller blade, obtains blade profiling negative electrode, design electric discharging machining electrode；

   11) blisk clamping after the hip treatment obtained by step 6) processing to five axle electric spark machine tools On workbench, the electric discharging machining electrode of allowance and step 10) design obtained according to step 9) is to hip treatment Blisk afterwards carries out electrical discharge machining, blisk after being repaired；

   12) into three coordinate measuring machine, overall leaf after repairing will be measured by blisk clamping after the reparation that step 11) obtains Disk, establish the actual threedimensional model of blisk after repairing；Then by the actual threedimensional model of blisk after reparation and design Threedimensional model is contrasted, the final trueness error and final deformation amount of blisk after being repaired；

   13) judge whether blisk is qualified according to the final trueness error of blisk after reparation and final deformation amount；When not When qualified, repeat step 7) -9) and step 11)；When qualified, then using it is wet blow sand, vibration finishing and shot-blast process be to repairing Blisk afterwards is surface-treated, and is then carried out cylindricalo grinding to the blade tip of blisk after reparation again, is reached leaf The length dimension of piece, the blisk repaired；

   Step 2) is specially：Line laser scanner edge is moved parallel to blade tip face direction with speed V, and true by Formula V=Df It is fixed；Wherein：V is line laser scanner sweep speed, unit mm/s；D is line laser scanner scanning accuracy, unit mm, It is relevant with the data precision for obtaining blade tip 3 d-dem dot profile；F is line laser scanner scan frequency, unit Hz； The 3 d-dem point of two, top of integrated impeller blade profile is obtained by line laser scanner, passes through (x_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 abrasion REPAIR WELDING rail Mark, wherein (x_i,y_i,z_i) it is REPAIR WELDING track discrete point, (x_1i,y_1i,z_1i) and (x_2i,y_2i,z_2i) it is integrated impeller blade top The 3 d-dem point of two profiles is held, n is the number of weld passes of REPAIR WELDING；

   Microplasma cladding built-up welding parameter is specially in step 3)：Constricting nozzle diameter：0.6~1.2mm；Speed of welding： 0.25~0.65cms^-1；Welding current：5~16A；Weldingvoltage：22~35V；Argon gas shield gas flow rate is 24~36L h^-1；Powder feeding rate is 3-10gs^-1。
2. 2. the repairing method of solid impeller disc according to claim 1 based on MICROBEAM PLASMA WELDING and electric spark finishing, its It is characterised by, it is further comprising the steps of：

   14) after carrying out nondestructive inspection to the whole impeller blade that step 13) is repaired, high-power test run is finally carried out.
3. 3. the repairing method of solid impeller disc according to claim 1 based on MICROBEAM PLASMA WELDING and electric spark finishing, its It is characterised by, step 6) is specially：The blisk base substrate that REPAIR WELDING obtains is put into hot isostatic press, is heated to 940 DEG C, and 200MPa is pressurized to, insulation constant pressure 1h；650 DEG C are subsequently cooled to, and is decompressed to 110MPa, then is incubated constant pressure 2- 4h；500 DEG C are finally cooled to, and is decompressed to atmospheric pressure, then cools to room temperature with the furnace again.
4. 4. the repairing method of solid impeller disc according to claim 1 based on MICROBEAM PLASMA WELDING and electric spark finishing, its It is characterised by, the concrete operations of step 11) are：Blisk base substrate is horizontally arranged to the displacement of five-axle linkage spark-erosion machine tool On machine worktable, using kerosene working solution, the spherical or cylindrical tool electrode of red copper material, the polarity of blisk is set for just Pole, from etc. energy square wave electric source modes, set electric spark milling lathe parameter after it is right respectively according to electrical discharge machining surplus Integrated impeller blade top and blade edge edge carry out electric spark finished machined；Electric spark milling lathe parameter is：Pulse width is 5-30 μ s, inter-train pause are 15-40 μ s, current density 17.52-84.39A/cm², gap voltage 35-70V.
5. 5. the repairing method of solid impeller disc according to claim 1 based on MICROBEAM PLASMA WELDING and electric spark finishing, its It is characterised by, the detailed process being ground in step 13) to blisk sample is：Blisk sample is installed to cylindrical On grinding machine, the end face of blisk sample blade is ground by cylindrical grinder, in grinding process, blisk sample Rotating speed be 6000r/min, grinding speed 120m/s, length feed speed is 0.01mm/min, and cylindrical grinder uses water Base type of cooling water filling, wherein, the flow of water is 90L/min, lift 5.5m.