Composite strengthening device and strengthening process for high-temperature alloy blade disc

Abstract

The invention discloses a high-temperature alloy blade disc composite strengthening device and strengthening technology, and belongs to the technical field of high-temperature alloy blade disc machining. The high-temperature alloy blade disc composite strengthening device comprises a spray gun clamping mechanism and a blade disc clamping assembly; the first limiting cylinder and the second limiting cylinder are arranged on the two sides of the mounting cylinder in a communicating mode respectively, a first piston piece is arranged in the first limiting cylinder, second piston pieces are arranged in the first limiting cylinder and the second limiting cylinder, a first connecting rod is arranged on the side wall of each second piston piece, and the other end of each first connecting rod is hinged to the spray gun clamping piece; the blade disc clamping assembly is used for pressing and limiting the blade disc. A spray gun can be clamped through the spray gun clamping mechanism, the position of the spray gun can be conveniently adjusted, and a blade disc is conveniently and rapidly clamped through the blade disc clamping assembly, so that strengthening treatment of the surface of the blade disc is efficiently achieved.

Description

Technical Field

[0001] The present application relates to the technical field of high temperature alloy blade disc processing, and in particular, to a high temperature alloy blade disc composite strengthening device and strengthening process. In addition, the present application also relates to a strengthening process using the high temperature alloy blade disc composite strengthening device. Background Art

[0002] The information provided in this section is for the purpose of generally presenting the background of the present application. To the extent described in this section, the work of the presently named inventors and aspects of the description that may not constitute prior art at the time of filing are neither explicitly nor implicitly admitted to be prior art to the present application.

[0003] As the performance of aircraft engines continues to improve, in order to adapt to working environments such as deserts and oceans, the compressor blade disc is made of high-temperature alloy materials, and the blades are thinner, especially the leading edge. The blades are at risk of foreign object damage and high-cycle fatigue failure. Ceramic shot / laser shock composite strengthening of the blade surface is one of the effective means to solve the problem. On the one hand, laser shock strengthening can produce deeper residual compressive stress and improve the fatigue resistance to foreign object damage; on the other hand, it can improve the integrity of the blade surface and improve the fatigue resistance of the parts, thereby improving the reliability and service life of the parts.

[0004] However, the following problems exist when strengthening blade discs: first, blade discs often use a single traditional mechanical shot peening process, which fails to fully exert the shot peening strengthening effect; secondly, the main stress failure modes of various parts of the blade are different, and there are differences in the requirements for surface strengthening and anti-fatigue effects; thirdly, surface strengthening will cause blade deformation and affect the aerodynamic performance of the blade disc; in addition, it is difficult to conveniently adjust the angle and position of the spray gun during the shot peening operation, and the efficiency of the blade disc clamping operation is low, which makes it difficult to effectively improve the efficiency of the overall shot peening process.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0006] In view of at least one of the above technical problems, the present application provides a high-temperature alloy blade disc composite strengthening device, which can clamp the spray gun through a spray gun clamping mechanism and conveniently adjust the position of the spray gun, and can conveniently and quickly clamp the blade disc through the blade disc clamping assembly, so as to efficiently achieve the strengthening treatment of the blade disc surface.

[0007] At the same time, the present application also provides a strengthening process using the above-mentioned high-temperature alloy blade disk composite strengthening device.

[0008] According to one aspect of the present application, a high-temperature alloy blade disk composite strengthening device is provided, which is used to clamp the blade disk and the spray gun of the shot peening machine respectively and to shot peen the blade disk through the spray gun. The high-temperature alloy blade disk composite strengthening device includes a spray gun clamping mechanism and a blade disk clamping assembly:

[0009] The spray gun clamping mechanism includes a mounting cylinder, a first limiting cylinder, a second limiting cylinder, an adjusting member, a spray gun clamping member and a mounting plate. The mounting cylinder is arranged on the mounting plate. The mounting plate is used to be connected to the shot peening machine. A first oil storage chamber for storing hydraulic oil is provided in the mounting cylinder. An oil inlet connected to the first oil storage chamber is provided on the top of the mounting cylinder. The first limiting cylinder and the second limiting cylinder are connected and arranged on both sides of the mounting cylinder respectively. A second oil storage chamber is provided in the first limiting cylinder. A third oil storage chamber is provided in the second limiting cylinder. Both the second oil storage chamber and the third oil storage chamber are connected to the first oil storage chamber. A first piston is movably arranged in the first oil storage chamber, a second piston is arranged in the second oil storage chamber and the third oil storage chamber, a first connecting rod is arranged on the side wall of the second piston, the other end of the first connecting rod is hinged to the spray gun clamp, the spray gun clamp is used to clamp the spray gun, the adjusting member is connected to the oil inlet by a thread, and the adjusting member is used to push the first piston to compress the hydraulic oil in the first oil storage chamber and the second oil storage chamber and the third oil storage chamber when screwed into the oil inlet, thereby pushing the second piston in the second oil storage chamber and the third oil storage chamber to move to drive the spray gun clamp to move;

[0010] The blade disk clamping assembly includes a base, a positioning block and a clamping block. The base is used to connect with the rotating mechanism. The positioning block is arranged on the base. The positioning block is used to support the blade disk. A center pull rod is arranged on the base. The clamping block is connected to the top of the center pull rod. The clamping block is used to cooperate with the positioning block to clamp the blade disk to a limited position.

[0011] In some embodiments of the present application, a positioning through hole is opened in the middle of the positioning block, and the positioning through hole is used to cooperate with the center pull rod to limit the positioning block. The bottom of the positioning block is connected to the base through a positioning pin. A support platform is provided on the top of the positioning block. The support platform is used to support the bottom of the blade disk. A positioning cylinder is provided on the support platform, and the positioning cylinder is used to center the center hole of the blade disk.

[0012] In some embodiments of the present application, a mounting pin hole is opened on the base, and the mounting pin hole is used to set a stop pin, and the stop pin is used to lean against the blade disk and perform angular positioning on the blade disk when clamping.

[0013] In some embodiments of the present application, an angle adjustment assembly is provided on the first limit cylinder and the second limit cylinder, and the angle adjustment assembly includes a connecting cylinder, a second connecting rod and a third compression spring. A support column is provided on the first limit cylinder and the second limit cylinder, and the support column is used to support and fix the connecting cylinder. The second connecting rod is used to be movably inserted into the connecting cylinder. The first end of the second connecting rod is hinged to the spray gun clamp, and the third compression spring is pressed between the second end of the second connecting rod and the connecting cylinder. Pushing members are provided on both sides of the side wall of the adjusting member, and the adjusting member is also used to drive the pushing member to rise and fall so that the pushing member abuts against the second end of the second connecting rod and pushes the second connecting rod axially along the connecting cylinder, thereby pushing the spray gun clamp to rotate around the hinge point of the first connecting rod.

[0014] In some embodiments of the present application, the pushing member includes a connecting portion and a pushing rod, the connecting portion is arranged on the side wall of the pushing rod, the connecting portion is connected to the side wall of the adjusting member, a locking member is arranged at the second end of the second connecting rod, a third compression spring is pressed between the locking member and the end face of the connecting tube, the locking member is used to abut against the pushing rod, the side wall where the locking member contacts the pushing member is an inclined surface, and the side wall where the pushing rod contacts the locking member is an inclined surface.

[0015] In some embodiments of the present application, a first compression spring is arranged between the first piston member and the bottom of the first oil storage chamber, limiting blocks are arranged at the outer end outlets of the first limiting cylinder and the second limiting cylinder, a second compression spring is sleeved on the first connecting rod, and the second compression spring is pressed between the second piston member and the limiting block.

[0016] In some embodiments of the present application, a connecting screw hole is opened on the top of the first piston member, and the connecting screw hole is used to set a plunger rod, and the plunger rod is used to abut against the bottom of the adjusting member.

[0017] In some embodiments of the present application, the spray gun clamp is a cylindrical structure, and the inner wall of the spray gun clamp is provided with a mounting screw hole, which is used to set a locking member and tighten the spray gun in the spray gun clamp through the locking member.

[0018] According to another aspect of the present application, a high-temperature alloy blade disk composite strengthening process is also provided, using the high-temperature alloy blade disk composite strengthening device described above, which includes the following steps:

[0019] S100, blade profile before measuring surface strengthening;

[0020] S200, clamping the blade disk onto the blade disk clamping assembly, with the leading edge of the blade disk facing upward;

[0021] S300, laser shock strengthening of the leading edge, root fillet and dangerous section of the blade disk;

[0022] S400, clamping the spray gun onto the spray gun clamping mechanism, and driving the blade disk clamping assembly and the blade disk to rotate through the rotating mechanism;

[0023] S500, wet peening of the front side of the blade disc with ceramic shot by a spray gun, then clamping the leading edge of the blade disc downward to the blade disc clamping assembly, and then wet peening of the back side of the blade disc with ceramic shot by a spray gun, the peening intensity is 0.1-0.2Nmm, the peening medium is AZB150 ceramic shot + water, and the coverage rate is ≥200%;

[0024] S600, measuring the blade shape after surface strengthening, and comparing it with the blade shape before surface strengthening to obtain the blade deformation amount.

[0025] In some embodiments of the present application, in step 300, before laser shock strengthening, black tape is attached to the surface of the blade disk as a black absorption layer to protect the blade and the hub; a CNC laser shock strengthening device is used to laser shock strengthen the leading edge, root fillet and dangerous section of the blade disk. The laser shock strengthening parameters are: laser energy 1 to 2.8 J, pulse width 10 to 18 ns, spot diameter 1.5 to 2 mm, overlap rate 50%, incident angle 45° to 60°, and the black tape needs to be removed and the blade cleaned after laser shock strengthening.

[0026] This application has the following beneficial effects:

[0027] The high-temperature alloy blade disk composite strengthening device of the present application clamps the spray gun through the spray gun clamping mechanism and can adjust the spray gun position, so as to realize the step-by-step shot peening operation on different areas of the blade. The first limit cylinder and the second limit cylinder are connected and arranged on both sides of the installation cylinder, the first piston member is arranged in the installation cylinder, the first limit cylinder and the second limit cylinder are both arranged with the second piston member, and the oil inlet at the top of the installation cylinder is provided with an adjusting member, which can push the first piston member to compress the hydraulic oil in the first oil storage chamber during the process of screwing into the oil inlet, so that the hydraulic oil simultaneously pushes the second piston member in the first limit cylinder and the second limit cylinder, and drives the spray gun clamping member to move through the second piston member, thereby realizing the synchronous adjustment of the positions of the spray guns on both sides, so as to ensure the uniformity of shot peening and improve the efficiency of shot peening.

[0028] The composite strengthening process of the high-temperature alloy blade disk in this application also has the above-mentioned beneficial effects. It also includes the ability to meet the needs of surface strengthening effects on different parts of the blades of the blade disk. First, the leading edge, root fillet, and dangerous section of the blade are laser-shock strengthened, and then the entire blade is subjected to surface strengthening processing by wet peening of ceramic balls. After composite strengthening of ceramic balls / laser shock, the first-order vibration high-cycle fatigue strength of the blade disk blade can be increased by 15%, and the first-order vibration fatigue life of the notched specimen (fatigue life against foreign object damage) can be increased by 3.8 times, providing technical support for the high reliability and long service life of the high-temperature alloy blade disk.

[0029] Of course, any product implementing this application does not necessarily need to achieve all the advantages described above at the same time. In addition to the purposes, features and advantages described above, this application also has other purposes, features and advantages. The following will further describe this application in detail with reference to the figures. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0031] Figure 1 It is a structural schematic diagram of a blade disc clamping assembly of a preferred embodiment of the present application;

[0032] Figure 2 It is a structural schematic diagram of a base in a preferred embodiment of the present application;

[0033] Figure 3 It is a structural schematic diagram of the spray gun clamping mechanism of the preferred embodiment of the present application;

[0034] Figure 4 This is a schematic diagram of the internal structure of the positioning cylinder of the preferred embodiment of the present application;

[0035] Figure 5 It is a structural schematic diagram of a spray gun fixture of a preferred embodiment of the present application;

[0036] Figure 6 It is a schematic diagram of the blade area division and performance analysis of the blade disk of the present application;

[0037] Figure 7 is a schematic diagram of the blade disk of the present application;

[0038] Legend: 100, spray gun clamping mechanism; 1, installation cylinder; 101, first oil storage chamber; 2, first limit cylinder; 21, second oil storage chamber; 3, second limit cylinder; 31, third oil storage chamber; 4, adjustment member; 41, adjustment column; 42, limit platform; 5, push member; 51, connecting part; 52, push rod; 6, first piston member; 7, second piston member; 8, first connecting rod; 9, spray gun clamping member; 10, locking member; 11, first compression spring; 1 2. Second compression spring; 13. Third compression spring; 14. Positioning piece; 15. Connecting tube; 16. Support column; 17. Second connecting rod; 18. Mounting plate; 19. Blade disk clamping assembly; 191. Base; 1911. Positioning pin; 1912. Stop pin; 1913. Center pull rod; 1914. Limiting groove; 1915. Alignment plane; 192. Positioning block; 1921. Positioning tube; 1922. Support platform; 193. Pressing block. DETAILED DESCRIPTION

[0039] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings, but the present application can be implemented in a variety of different ways defined and covered below.

[0040] Figure 1 It is a structural schematic diagram of a blade disc clamping assembly of a preferred embodiment of the present application; Figure 2 It is a structural schematic diagram of a base in a preferred embodiment of the present application; Figure 3 It is a structural schematic diagram of the spray gun clamping mechanism of the preferred embodiment of the present application; Figure 4 This is a schematic diagram of the internal structure of the positioning cylinder of the preferred embodiment of the present application; Figure 5 It is a structural schematic diagram of a spray gun fixture of a preferred embodiment of the present application; Figure 6 It is a schematic diagram of the blade area division and performance analysis of the blade disk of the present application; Figure 7 It is a schematic diagram of the blade disk of the present application.

[0041] A high-temperature alloy blade disk composite strengthening device is used to clamp the blade disk and the spray gun of the shot peening machine respectively and to shot peen the blade disk through the spray gun. The high-temperature alloy blade disk composite strengthening device includes a spray gun clamping mechanism 100 and a blade disk clamping assembly 19:

[0042] The spray gun clamping mechanism 100 includes a mounting cylinder 1, a first limiting cylinder 2, a second limiting cylinder 3, an adjusting member 4, a spray gun clamping member 9 and a mounting plate 18. The mounting cylinder 1 is arranged on the mounting plate 18, and the mounting plate 18 is used to connect with the shot peening machine. A first oil storage chamber 101 for storing hydraulic oil is provided in the mounting cylinder 1, and an oil inlet connected to the first oil storage chamber 101 is provided at the top of the mounting cylinder 1. The first limiting cylinder 2 and the second limiting cylinder 3 are respectively connected and arranged on both sides of the mounting cylinder 1. A second oil storage chamber 21 is provided in the first limiting cylinder 2, and a third oil storage chamber 31 is provided in the second limiting cylinder 3. The second oil storage chamber 21 and the third oil storage chamber 31 are both connected to the first oil storage chamber 1. 01 is connected, a first piston member 6 is movably arranged in the first oil storage chamber 101, a second piston member 7 is arranged in each of the second oil storage chamber 21 and the third oil storage chamber 31, a first connecting rod 8 is arranged on the side wall of the second piston member 7, the other end of the first connecting rod 8 is hinged to the spray gun clamping member 9, the spray gun clamping member 9 is used to clamp the spray gun, the adjusting member 4 is connected to the oil inlet by a thread, and the adjusting member 4 is used to push the first piston member 6 to compress the hydraulic oil in the first oil storage chamber 101 and the second oil storage chamber 21 and the third oil storage chamber 31 when screwed into the oil inlet, thereby pushing the second piston member 7 in the second oil storage chamber 21 and the third oil storage chamber 31 to move to drive the spray gun clamping member 9 to move;

[0043] The blade disc clamping assembly 19 includes a base 191, a positioning block 192 and a pressing block 193.

[0044] The base 191 is used to connect with the rotating mechanism, the positioning block 192 is set on the base 191, the positioning block 192 is used to support the blade disk, a center pull rod 1913 is set on the base 191, the clamping block 193 is connected to the top of the center pull rod 1913, and the clamping block 193 is used to cooperate with the positioning block 192 to clamp the blade disk to limit the position.

[0045] The meaning of "adjusting part 4" here refers to the structure connected to the oil inlet at the top of the mounting tube 1. In some embodiments, the adjusting part 4 includes an adjusting column 41 and a limiting platform 42. The limiting platform 42 is arranged on the top of the adjusting column 41. The adjusting column 41 is used to cooperate with the oil inlet through threads. The limiting platform 42 is used to limit the top of the adjusting column 41, and the limiting platform 42 can facilitate the manual twisting of the adjusting column 41.

[0046] The rotating mechanism here refers to a mechanism connected to the base 191 and driving the base 191 to rotate. The rotating mechanism includes a motor and a turntable. The turntable is connected to the output shaft of the motor and is fastened to the base 191 through the turntable.

[0047] The high-temperature alloy blade disk composite strengthening device of the present application clamps the spray gun through the spray gun clamping mechanism 100 and can adjust the spray gun position, so as to realize the step-by-step shot peening operation on different areas of the blade. The first limiting cylinder 2 and the second limiting cylinder 3 are connected on both sides of the installation cylinder 1, and the first piston member 6 is arranged in the installation cylinder 1, and the second piston member 7 is arranged in the first limiting cylinder 2 and the second limiting cylinder 3. The oil inlet at the top of the installation cylinder 1 is provided with an adjusting member 4. The adjusting member 4 can push the first piston member 6 to compress the hydraulic oil in the first oil storage chamber 101 during the process of screwing into the oil inlet, so that the hydraulic oil simultaneously pushes the second piston member 7 in the first limiting cylinder 2 and the second limiting cylinder 3, and drives the spray gun clamping member 9 to move through the second piston member 7, thereby realizing the synchronous adjustment of the positions of the spray guns on both sides, so as to ensure the uniformity of shot peening and improve the efficiency of shot peening.

[0048] Preferably, please refer to Figure 1 As shown, a positioning through hole is opened in the middle of the positioning block 192, and the positioning through hole is used to cooperate with the center pull rod 1913 to limit the positioning block 192. The bottom of the positioning block 192 is connected to the base 191 through a positioning pin 1911. A supporting platform 1922 is provided on the top of the positioning block 192. The supporting platform 1922 is used to support the bottom of the blade disk. A positioning cylinder 1921 is provided on the supporting platform 1922, and the positioning cylinder 1921 is used to center the center hole of the blade disk.

[0049] It can be understood that the bottom of the blade disc is supported by the support platform 1922 of the positioning block 192, and the top of the blade disc is pressed by the pressing block 193, so that the blade disc can be clamped quickly and stably. The pressing block 193 is preferably connected to the top of the center rod 1913 by a thread. The positioning block 192 is also provided with a positioning cylinder 1921 to center the center hole of the blade disc, so as to improve the clamping stability of the blade disc, reduce the phenomenon of the blade disc being prone to shaking, and improve the uniformity of the shot peening of the blade disc.

[0050] Preferably, please refer to Figure 1 , 2 As shown, a mounting pin hole is provided on the base 191, and the mounting pin hole is used to set a stop pin 1912, and the stop pin 1912 is used to lean against the blade disk and perform angular positioning on the blade disk when clamping.

[0051] It can be understood that the stop pin 1912 is pluggable and arranged on the base 191, and the angular positioning of the blade disk can be achieved by the stop pin 1912 supporting the blade disk.

[0052] It should be noted that when the blade disc is wet-peened with ceramic shot, a spray gun is used to peen at a fixed position and angle, and the blade disc needs to rotate continuously without a fixed angle. Therefore, the stop pin 1912 is manually pulled out before installing the blade disc. If there is a stop pin 1912, the blade will be blocked, resulting in missed shot peening, which affects the uniformity of the blade shot peening.

[0053] Optionally, a limiting groove 1914 with a U-shaped groove structure is provided on the base 191. The limiting groove 1914 is used to allow a limiting column on the turntable to pass through the limiting groove 1914 to clamp the base 191 when the local base 191 is connected to the turntable of the rotating mechanism, or to fasten the base 191 by passing a bolt through the limiting groove 1914.

[0054] Preferably, please refer to Figure 3 , 4 As shown, the first limiting cylinder 2 and the second limiting cylinder 3 are both provided with an angle adjustment assembly, and the angle adjustment assembly includes a connecting cylinder 15, a second connecting rod 17 and a third compression spring 13. The first limiting cylinder 2 and the second limiting cylinder 3 are both provided with a support column 16, and the support column 16 is used to support and fix the connecting cylinder 15. The second connecting rod 17 is used to be movably inserted into the connecting cylinder 15. The first end of the second connecting rod 17 is hinged to the spray gun clamp 9, and the third compression spring 13 is compressed between the second end of the second connecting rod 17 and the connecting cylinder 15. Pushing members 5 are provided on both sides of the side wall of the adjusting member 4. The adjusting member 4 is also used to drive the pushing member 5 to rise and fall so that the pushing member 5 abuts against the second end of the second connecting rod 17 and pushes the second connecting rod 17 axially along the connecting cylinder 15, thereby pushing the spray gun clamp 9 to rotate around the hinge point of the first connecting rod 8.

[0055] Specifically, the pushing member 5 includes a connecting portion 51 and a pushing rod 52, the connecting portion 51 is arranged on the side wall of the pushing rod 52, the connecting portion 51 is connected to the side wall of the adjusting member 4, the second end of the second connecting rod 17 is provided with a locking member 14, the third compression spring 13 is pressed between the locking member 14 and the end surface of the connecting tube 15, the locking member 14 is used to abut against the pushing rod 52, the side wall where the locking member 14 contacts with the pushing rod 52 is an inclined surface, and the side wall where the pushing rod 52 contacts with the locking member 14 is an inclined surface.

[0056] It can be understood that the adjusting member 4 drives the pushing member 5 to rise and fall, and the pushing member 5 pushes the second connecting rod 17 to move along the axial direction of the connecting tube 15, thereby pushing the spray gun clamp 9 to rotate around the hinge point of the first connecting rod 8, so that when the copper tube adjusting member 4 adjusts the spray gun position, the angle of the spray gun can be adjusted in linkage, so that shot peening operations can be performed on different areas of the blade disk in turn, which is beneficial to improving the efficiency of shot peening.

[0057] The side walls of the push rod 52 and the locking member 14 are both inclined structures, which can enable the push rod 52 to smoothly push the locking member 14 and increase the displacement distance of the locking member 14. The third compression spring 13 can realize the reset of the locking member 14.

[0058] Preferably, please refer to Figure 4 As shown, a first compression spring 11 is arranged between the first piston member 6 and the bottom of the first oil storage chamber 101, limiting blocks are arranged at the outer end outlets of the first limiting cylinder 2 and the second limiting cylinder 3, and a second compression spring 12 is sleeved on the first connecting rod 8, and the second compression spring 12 is pressed between the second piston member 7 and the limiting block.

[0059] It is understandable that the first compression spring 11 is used to provide elastic force to push the first piston member 6 away from the bottom of the first oil storage chamber 101, so that the first piston member 6 can be reset by the first compression spring 11; similarly, the second compression spring 12 can also reset the second piston member 7. Thus, the horizontal position of the spray gun clamping member 9 can be finely adjusted repeatedly by adjusting the upper and lower positions of the adjusting member 4.

[0060] Optionally, in order to improve the accuracy of the displacement of the first piston member 6 and the second piston member 7, that is, to further improve the accuracy of controlling the displacement of the spray gun clamp 9, annular limit grooves are provided on the side walls of the first piston member 6 and the second piston member 7, and the annular limit grooves are used to set rubber sealing rings, which enhance the sealing effect of the sealing surfaces of the side walls of the first piston member 6 and the second piston member 7.

[0061] Preferably, please refer to Figure 4 As shown, a connecting screw hole is opened on the top of the first piston member 6, and the connecting screw hole is used to set a plunger rod, and the plunger rod is used to abut against the bottom of the adjusting member 4.

[0062] It is understandable that the length of the plunger rod exposed outside the connecting screw hole can be adjusted, so as to facilitate the abutment with the bottom of the adjusting member 4 to ensure that the adjusting member 4 can smoothly push the first piston member 6 to move.

[0063] Preferably, please refer to Figure 3 , 4 As shown in , 5 , the spray gun fixture 9 is a tubular structure, and the inner wall of the spray gun fixture 9 is provided with a mounting screw hole, and the mounting screw hole is used to set a locking member 10 and to tighten the spray gun in the spray gun fixture 9 through the locking member 10.

[0064] It is understandable that the spray gun clamping member 9 of the cylindrical structure can limit the spray gun through the middle through hole, and at the same time, the spray gun is pressed and fixed by the locking member 10. Optionally, the locking member 10 is a locking bolt.

[0065] According to another aspect of the present application, a high-temperature alloy blade disk composite strengthening process is also provided, using the high-temperature alloy blade disk composite strengthening device described above, which includes the following steps:

[0066] S100, blade profile before measuring surface strengthening;

[0067] S200, clamping the blade disk onto the blade disk clamping assembly 19, with the leading edge of the blade disk facing upwards;

[0068] S300, laser shock strengthening of the leading edge, root fillet and dangerous section of the blade disk;

[0069] S400, clamping the spray gun onto the spray gun clamping mechanism 100, and driving the blade disk clamping assembly 19 and the blade disk to rotate through the rotating mechanism;

[0070] S500, wet peening of the front side of the blade disc with ceramic shot by a spray gun, then clamping the leading edge of the blade disc downward to the blade disc clamping assembly 19, and then wet peening of the back side of the blade disc with ceramic shot by a spray gun, the peening intensity is 0.1-0.2Nmm, the peening medium is AZB150 ceramic shot + water, and the coverage rate is ≥200%;

[0071] S600, measuring the blade shape after surface strengthening, and comparing it with the blade shape before surface strengthening to obtain the blade deformation amount.

[0072] The composite strengthening process of the high-temperature alloy blade disk in this application also has the above-mentioned beneficial effects. It also includes the ability to meet the needs of surface strengthening effects on different parts of the blades of the blade disk. First, the leading edge, root fillet, and dangerous section of the blade are laser-shock strengthened, and then the entire blade is subjected to surface strengthening processing by wet peening of ceramic balls. After composite strengthening of ceramic balls / laser shock, the first-order vibration high-cycle fatigue strength of the blade disk blade can be increased by 15%, and the first-order vibration fatigue life of the notched specimen (fatigue life against foreign object damage) can be increased by 3.8 times, providing technical support for the high reliability and long service life of the high-temperature alloy blade disk.

[0073] Preferably, in step 300, before laser shock peening, black tape is affixed to the surface of the blade disk as a black absorption layer to protect the blades and the hub; a CNC laser shock peening device is used to laser shock peen the leading edge, root fillet and dangerous section of the blade disk, and the laser shock peening parameters are: laser energy 1-2.8J, pulse width 10-18ns, spot diameter 1.5-2mm, overlap rate 50%, incident angle 45°-60°, and the black tape needs to be removed and the blades need to be cleaned after laser shock peening.

[0074] Specifically, during laser shock strengthening, the blade disk is installed in a normal manner, that is, the leading edge of the blade disk faces upward, which is convenient for planning the laser path and avoiding optical path interference with the blade disk clamping assembly 19 or other parts of the blade disk;

[0075] In some embodiments, an alignment plane 1915 is provided on the side wall of the base 191. The front side of the base 191 is determined by the alignment plane 1915 to achieve the overall alignment of the fixture of the blade disk clamping assembly 19, facilitate the zero adjustment of the angle of the turntable of the rotating mechanism, and facilitate the subsequent setting of the programming origin of the laser shock intensive treatment of the blade disk, thereby realizing CNC laser shock intensive treatment of the blade disk.

[0076] It should be noted that the compressor blade disk can be divided into two parts: the disk body and the blade. The blade can be divided into four areas: the root fillet, the dangerous section, the leading edge and the rest of the blade body. Please refer to the attached manual for details. Figure 6 . The leading edge is mainly faced with foreign object damage and notch fatigue failure problems. After strengthening, a hardened layer with high hardness and adapted to the thickness of the blade is formed on the surface. The blade body mainly meets the dual requirements of shape coordination control and good aerodynamic performance. After strengthening, the blade has a lower surface roughness and a smaller blade deformation. The root fillet and dangerous section are mainly faced with high-cycle fatigue failure problems. After strengthening, a high-amplitude residual compressive stress layer and a hardened layer adapted to the structure are formed on the surface.

[0077] Therefore, in order to meet the requirements of surface strengthening effects on different parts of the blades of the blade disk, a surface strengthening processing technology was designed that first performs laser shock strengthening on the leading edge, root fillet, and dangerous section of the blade, and then performs ceramic shot wet peening on the entire blade.

[0078] The present application adopts a ceramic shot wet shot peening + laser shock composite strengthening process to perform shot peening strengthening treatment on the surface of the blade disk, so as to achieve the dual goals of fully exerting the anti-fatigue strengthening effect and deformation control.

[0079] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0080] This article uses specific examples to illustrate the principles and implementation methods of this application. The above examples are only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection of this application.

Claims

1. A composite strengthening device for a high-temperature alloy blade disk, used to clamp the blade disk and the spray gun of a shot peening machine respectively and to shot peen the blade disk through the spray gun, characterized in that: The high-temperature alloy blade disk composite strengthening device comprises a spray gun clamping mechanism (100) and a blade disk clamping assembly (19): The spray gun clamping mechanism (100) comprises a mounting cylinder (1), a first limiting cylinder (2), a second limiting cylinder (3), an adjusting member (4), a spray gun clamping member (9) and a mounting plate (18). The mounting cylinder (1) is arranged on the mounting plate (18), and the mounting plate (18) is used to be connected to a shot peening machine. A first oil storage chamber (101) for storing hydraulic oil is provided in the mounting cylinder (1), and an oil inlet connected to the first oil storage chamber (101) is provided at the top of the mounting cylinder (1). The first limiting cylinder (2) and the second limiting cylinder (3) are respectively connected and arranged on two sides of the mounting cylinder (1). A second oil storage chamber (21) is provided in the first limiting cylinder (2), and a third oil storage chamber (31) is provided in the second limiting cylinder (3). Both the second oil storage chamber (21) and the third oil storage chamber (31) are connected to the first oil storage chamber. The first oil storage chamber (101) and the second oil storage chamber (21) are connected to each other, a first piston member (6) is movably arranged in the first oil storage chamber (101), a second piston member (7) is arranged in each of the second oil storage chamber (21) and the third oil storage chamber (31), a first connecting rod (8) is arranged on the side wall of the second piston member (7), the other end of the first connecting rod (8) is hinged to the spray gun clamping member (9), the spray gun clamping member (9) is used to clamp the spray gun, the adjusting member (4) is connected to the oil inlet by a thread, and the adjusting member (4) is used to push the first piston member (6) to compress the hydraulic oil in the first oil storage chamber (101) and the second oil storage chamber (21) and the third oil storage chamber (31) when screwed into the oil inlet, thereby pushing the second piston member (7) in the second oil storage chamber (21) and the third oil storage chamber (31) to move so as to drive the spray gun clamping member (9) to move; The blade disk clamping assembly (19) comprises a base (191), a positioning block (192) and a clamping block (193); the base (191) is used to be connected to a rotating mechanism; the positioning block (192) is arranged on the base (191); the positioning block (192) is used to support the blade disk; a center pull rod (1913) is arranged on the base (191); the clamping block (193) is connected to the top of the center pull rod (1913); the clamping block (193) is used to cooperate with the positioning block (192) to clamp the blade disk to a limited position.

2. A high temperature alloy blade disk composite strengthening device according to claim 1, characterized in that: A positioning through hole is provided in the middle of the positioning block (192), and the positioning through hole is used to cooperate with the center pull rod (1913) to limit the positioning block (192). The bottom of the positioning block (192) is connected to the base (191) through a positioning pin (1911). A supporting platform (1922) is provided on the top of the positioning block (192), and the supporting platform (1922) is used to support the bottom of the blade disk. A positioning cylinder (1921) is provided on the supporting platform (1922), and the positioning cylinder (1921) is used to center the center hole of the blade disk.

3. The high temperature alloy blade disk composite strengthening device according to claim 1, characterized in that: The base (191) is provided with a mounting pin hole, the mounting pin hole is used to set a stop pin (1912), and the stop pin (1912) is used to lean against the blade disk and perform angular positioning on the blade disk when clamping.

4. A high temperature alloy blade disk composite strengthening device according to claim 1, characterized in that: The first limiting cylinder (2) and the second limiting cylinder (3) are both provided with an angle adjustment assembly, the angle adjustment assembly comprising a connecting cylinder (15), a second connecting rod (17) and a third compression spring (13), the first limiting cylinder (2) and the second limiting cylinder (3) are both provided with a support column (16), the support column (16) is used to support and fix the connecting cylinder (15), the second connecting rod (17) is used to be movably inserted into the connecting cylinder (15), and the first end of the second connecting rod (17) is connected to the spray gun clamp ( 9) is hinged, a third compression spring (13) is compressed between the second end of the second connecting rod (17) and the connecting tube (15), and pushing members (5) are arranged on both sides of the side wall of the adjusting member (4). The adjusting member (4) is also used to drive the pushing member (5) to rise and fall so that the pushing member (5) abuts against the second end of the second connecting rod (17) and pushes the second connecting rod (17) axially along the connecting tube (15), thereby pushing the spray gun clamp (9) to rotate around the hinge point of the first connecting rod (8).

5. A high temperature alloy blade disk composite strengthening device according to claim 4, characterized in that: The pushing member (5) comprises a connecting portion (51) and a pushing rod (52), wherein the connecting portion (51) is arranged on a side wall of the pushing rod (52), and the connecting portion (51) is connected to a side wall of the adjusting member (4); a locking member (14) is arranged on the second end of the second connecting rod (17); a third compression spring (13) is pressed between the locking member (14) and the end surface of the connecting tube (15); the locking member (14) is used to abut against the pushing rod (52); the side wall where the locking member (14) contacts the pushing rod (52) is an inclined surface, and the side wall where the pushing rod (52) contacts the locking member (14) is an inclined surface.

6. The high temperature alloy blade disk composite strengthening device according to claim 1, characterized in that: A first compression spring (11) is arranged between the first piston member (6) and the bottom of the first oil storage chamber (101), and a limiting block is arranged at the outer end outlet of the first limiting cylinder (2) and the second limiting cylinder (3). A second compression spring (12) is sleeved on the first connecting rod (8), and the second compression spring (12) is pressed between the second piston member (7) and the limiting block.

7. The high temperature alloy blade disk composite strengthening device according to claim 1, characterized in that: A connecting screw hole is provided on the top of the first piston member (6), and the connecting screw hole is used to arrange a plunger rod, and the plunger rod is used to abut against the bottom of the adjusting member (4).

8. The high temperature alloy blade disk composite strengthening device according to claim 1, characterized in that: The spray gun fixture (9) is a cylindrical structure. The inner wall of the spray gun fixture (9) is provided with a mounting screw hole. The mounting screw hole is used to set a locking member (10) and to tighten the spray gun in the spray gun fixture (9) through the locking member (10).

9. A composite strengthening process for high temperature alloy blade disk, characterized in that: The high-temperature alloy blade disk composite strengthening device according to any one of claims 1 to 9 comprises the following steps: S100, blade profile before measuring surface strengthening; S200, clamping the blade disk onto the blade disk clamping assembly (19), with the leading edge of the blade disk facing upwards; S300, laser shock strengthening of the leading edge, root fillet and dangerous section of the blade disk; S400, clamping the spray gun onto the spray gun clamping mechanism (100), and driving the blade disk clamping assembly (19) and the blade disk to rotate via the rotating mechanism; S500, wet peening of the front side of the blade disc with ceramic shot by a spray gun, then clamping the front edge of the blade disc downward onto the blade disc clamping assembly (19), and then wet peening of the back side of the blade disc with ceramic shot by a spray gun, the peening intensity is 0.1-0.2Nmm, the peening medium is AZB150 ceramic shot + water, and the coverage is ≥200%; S600, measuring the blade shape after surface strengthening, and comparing it with the blade shape before surface strengthening to obtain the blade deformation amount.

10. A high temperature alloy blade disk composite strengthening process according to claim 9, characterized in that: In step S300, before laser shock peening, black tape is pasted on the surface of the blade disk as a black absorption layer to protect the blades and the hub; the leading edge, root fillet and dangerous section of the blade disk are laser shock peened using CNC laser shock peening equipment, and the laser shock peening parameters are: laser energy 1-2.8J, pulse width 10-18ns, spot diameter 1.5-2mm, overlap rate 50%, incident angle 45°-60°, and the black tape needs to be removed and the blades need to be cleaned after laser shock peening.

Images