Partitioned sand prevention method and system for integral axial flow blade disc

Abstract

The invention relates to a partition sand prevention method and system for an integral axial flow blade disc, and belongs to the field of aero-engine compressor blade discs. The partition sand prevention method comprises the following steps that blades of a blade disc body are cleaned through ultrasonic waves, and oxide layers are removed; according to damage differences of different areas of the blade, a blade basin first damage area, a blade basin second damage area, a blade back first damage area, a blade back second damage area, a blade top damage area and a non-damage area are divided on the blade; according to the method, the areas are divided on the blade, and the anti-erosion coatings are sprayed on the damaged areas in stages, so that the anti-erosion coatings are sprayed on the damaged areas under the conditions that the thicknesses of the first damaged area of the blade basin and the first damaged area of the blade back are 12-20 microns and the thicknesses of the second damaged area of the blade basin, the second damaged area of the blade back and the damaged area of the blade top are 6-10 microns; the anti-erosion capacity of the blade disc body can be greatly improved, and meanwhile the aerodynamic performance and the strength requirement of the blade disc body can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of aero-engine compressor blade disks, and in particular relates to a partitioned sand prevention method for an integral axial flow blade disk. Background Art

[0002] When aircraft are in service across regions, their engines will inevitably inhale particles such as sand and dust, especially in plains and deserts. The compressor, especially its rotor blade disk, as the inlet of the engine, is severely eroded by sand particles when rotating at high speed, which in turn leads to a decline in engine performance. In severe cases, it leads to reliability risks such as fatigue damage, which greatly restricts the actual use value of aircraft.

[0003] To alleviate this situation, there are currently three common practices:

[0004] 1) Thickening the blade profile of the blade disk, that is, increasing the thickness of the erosion-prone part of the blade profile to improve the erosion resistance;

[0005] 2) Replace the material of the entire blade disk with a wear-resistant material, that is, replace erosion-prone materials such as titanium alloy with high-temperature alloy materials;

[0006] 3) Coating the blades of the blade disk with an anti-erosion coating, that is, coating the blades and the disk body with a hard coating indiscriminately, thereby improving the ability to resist sand and dust erosion.

[0007] However, when using method 1), the dust is easily eroded by the centrifugal force after high-speed rotation, and the leading edge of the blade tip is sensitive to aerodynamic performance. After thickening, the aerodynamic performance is significantly reduced. At the same time, after the leading edge of the blade tip is thickened, the stress and blade deformation at the root of the blade are difficult to control, which in turn affects the strength of the blade disk. When using method 2), since the strength of high-temperature alloys is lower than that of titanium alloys, it is difficult to meet the strength requirements. When using method 3), since the hardness of the hardness coating is significantly different from that of the substrate and has a high bonding force, the material properties of the blade body will be reduced, which in turn affects the strength requirements of the body. Summary of the invention

[0008] In view of the above problems, the present invention provides a partitioned sand prevention method for an integral axial flow blade disk, which greatly improves the erosion resistance of the blade disk while ensuring the aerodynamic performance and strength requirements of the blade disk.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A method for preventing sand by partitioning an integral axial flow blade disk comprises the following steps:

[0011] Use ultrasonic waves to clean the blades of the blade disc body and remove the oxide layer;

[0012] According to the damage differences in different areas of the leaf, the leaf is divided into the first damaged area of ​​the leaf basin, the second damaged area of ​​the leaf basin, the first damaged area of ​​the leaf back, the second damaged area of ​​the leaf back, the damaged area of ​​the leaf top and the undamaged area;

[0013] The first damaged area of ​​the blade basin and the first damaged area of ​​the blade back are sprayed with an anti-erosion coating in different areas; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0014] Then, the second damaged area of ​​the blade basin, the second damaged area of ​​the blade back, the damaged area of ​​the blade top, and the first damaged area of ​​the blade basin and the first damaged area of ​​the blade back sprayed with the anti-erosion coating are sprayed with the anti-erosion coating in different areas; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0015] Mechanical shot peening or laser strengthening of undamaged areas;

[0016] Check the surface condition of the anti-erosion coating; check adjacent anti-erosion coatings and the transition between the anti-erosion coating and the undamaged area.

[0017] Furthermore, the difference in the junction of the anti-erosion coatings of the first damaged area in the blade basin and the second damaged area in the blade basin, the first damaged area in the blade back and the second damaged area in the blade back, the blade top damaged area and the first damaged area in the blade basin, the blade top damaged area and the first damaged area in the blade back, the blade top damaged area and the second damaged area in the blade basin, and the blade top damaged area and the second damaged area in the blade back is ≤10μm.

[0018] Furthermore, the blade basin damage area includes a first blade basin damage area and a second blade basin damage area, and the wear degree of the first blade basin damage area is greater than the wear degrees of the second blade basin damage area and the blade tip damage area.

[0019] Further, the blade back damaged area includes a first blade back damaged area and a second blade back damaged area, and the wear degree of the first blade back damaged area is greater than the wear degrees of the second blade back damaged area and the blade top damaged area.

[0020] Furthermore, the second damaged area of ​​the blade basin, the second damaged area of ​​the blade back and the undamaged area after spraying the anti-erosion coating meet the following height conditions:

[0021] H1 is 50% to 70% of H;

[0022] H2 is 50% to 70% of H;

[0023] H3 is 80% to 95% of H;

[0024] Among them, H is the height of the blade; H1 is the height of the second damaged area on the blade base; H2 is the height of the undamaged area; H3 is the height of the second damaged area on the blade back.

[0025] Furthermore, the first damaged area of ​​the blade basin, the first damaged area of ​​the blade back and the damaged area of ​​the blade back after spraying the anti-erosion coating meet the following length conditions:

[0026] L1 is 40% to 60% of L;

[0027] L2 is 20% to 40% of L;

[0028] L3 is 40% to 60% of L;

[0029] Among them, L is the chord length of the blade; L1 is the chord length of the first damaged area of ​​the blade basin; L2 is the chord length of the first damaged area of ​​the blade back; L3 is the chord length of the damaged area on the blade back.

[0030] Furthermore, the first damaged area of ​​the blade basin, the first damaged area of ​​the blade back and the second damaged area of ​​the blade back after spraying the anti-erosion coating meet the following angle conditions:

[0031] a1° is 60°~80°;

[0032] a2° is 70°~90°;

[0033] a3° is 10°~40°;

[0034] a4° is 10°~40°;

[0035] a5° is 20°~40°;

[0036] a6° is 10°~30°;

[0037] Among them, a1° is the angle between the first damaged area of ​​the blade basin and the top of the blade; a2° is the angle between the second damaged area of ​​the blade basin and the trailing edge of the blade; a3° is the angle between the first damaged area of ​​the blade basin and the leading edge of the blade; a4° is the angle between the second damaged area of ​​the blade basin and the hub of the blade disk body; a5° is the angle between the first damaged area on the blade back and the top of the blade; a6° is the angle between the second damaged area on the blade back and the top of the blade.

[0038] Furthermore, the first damaged area of ​​the blade basin, the first damaged area of ​​the blade back and the second damaged area of ​​the blade back after spraying the anti-erosion coating meet the following rounding conditions:

[0039] R1 is 15 to 30 mm;

[0040] R2 is 10 to 30 mm;

[0041] Among them, R1 is the fillet diameter of the first damaged area of ​​the blade basin; R2 is the fillet diameter of the second damaged area of ​​the blade basin.

[0042] Furthermore, the surface roughness of the anti-erosion coating is ≤Ra0.8μm.

[0043] An integral axial flow blade disk partitioned sand prevention system, comprising:

[0044] Cleaning module: used to clean the blades of the blade disc body and remove the oxide layer using ultrasonic waves;

[0045] Area division module: used to divide the blade into the first damaged area of ​​the blade basin, the second damaged area of ​​the blade basin, the first damaged area of ​​the blade back, the second damaged area of ​​the blade back, the damaged area of ​​the blade top and the undamaged area according to the damage differences of different areas of the blade;

[0046] Initial spraying module: spraying the anti-erosion coating on the first damaged area of ​​the blade basin and the first damaged area of ​​the blade back; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0047] Spray the module again; then spray the anti-erosion coating on the second damaged area of ​​the blade basin, the second damaged area of ​​the blade back, the damaged area of ​​the blade top, and the first damaged area of ​​the blade basin and the first damaged area of ​​the blade back sprayed with the anti-erosion coating; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0048] Strengthening treatment module: used to strengthen the undamaged area;

[0049] Inspection module: used to inspect the surface condition of the anti-erosion coating, the adjacent anti-erosion coating, and the transition between the anti-erosion coating and the undamaged area.

[0050] Compared with the prior art, the present invention has the following beneficial effects:

[0051] 1) The present invention divides the blade into areas and sprays the anti-erosion coating on the damaged areas in stages. Under the condition that the thickness of the first damaged area of ​​the blade basin and the first damaged area of ​​the blade back is 12μm to 20μm, and the thickness of the second damaged area of ​​the blade basin, the second damaged area of ​​the blade back and the damaged area of ​​the blade top is 6μm to 10μm, the anti-erosion ability of the blade disc body can be greatly improved, while the aerodynamic performance and strength requirements of the blade disc body can be guaranteed.

[0052] 2) The present invention adopts a spraying method to coat the anti-erosion coating on the subdivided areas of the blade, which can effectively reduce the influence of the coating on the mechanical properties of the substrate and ensure the aerodynamic performance of the blade disc body.

[0053] 3) The present invention utilizes ultrasonic waves to clean the blade disc body and remove the oxide layer, which facilitates the rapid partitioning and subsequent partitioning spraying of the anti-erosion coating on the blade, thereby improving the spraying efficiency.

[0054] 4) The present invention divides the damage differences of different areas of the blade so as to spray anti-erosion coatings of different thicknesses in a targeted manner, thereby achieving the purpose of improving the anti-erosion ability of the blade disc body.

[0055] 5) The deposition rate in the present invention is ≤1 μm / h, which can ensure that the blades after spraying the anti-erosion coating meet the inspection requirements, that is, meet the inspection requirements of height conditions, length conditions, angle conditions and rounding conditions.

[0056] 6) The present invention inspects the surface state of the anti-erosion coating, and inspects adjacent anti-erosion coatings and the transition between the anti-erosion coating and the undamaged area, so as to ensure the aerodynamic performance and strength requirements of the blade disc body while greatly improving the anti-erosion ability of the blade disc body.

[0057] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0059] Figure 1 A flow chart of a method for controlling sand by partitioning an integral axial flow blade disk is shown;

[0060] Figure 2 A block diagram of an integral axial flow blade disk partitioned sand control system is shown;

[0061] Figure 3 A schematic diagram of the structure of the blade disc body is shown;

[0062] Figure 4 A schematic diagram showing the blade basin damage area on the blade disk body;

[0063] Figure 5 A schematic diagram showing the angles formed between the first damaged area of ​​the blade basin and the second damaged area of ​​the blade basin and the blade;

[0064] Figure 6 A schematic diagram showing the blade back damage area on the blade disc body;

[0065] Figure 7A schematic diagram showing the angles formed between the first damaged area on the back of the leaf and the second damaged area on the back of the leaf and the leaf respectively;

[0066] Figure 8 A schematic diagram showing the blade tip damage area on the blade disk body;

[0067] Figure numerals: 1. Blade disk body 1; 11. Hub; 2. Blade; 21. Blade back; 22. Blade top; 23. Trailing edge; 24. Blade basin; 25. Leading edge; 3. Blade basin damaged area; 31. Blade basin first damaged area; 32. Blade basin second damaged area; 4. Blade back damaged area; 41. Blade back first damaged area; 42. Blade back second damaged area; 5. Blade top damaged area; 6. Undamaged area. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] Embodiment 1

[0070] Figure 1 A flow chart of a method for controlling sand by partitioning an integral axial flow blade disk is shown; Figure 3 A schematic diagram of the structure of the blade disc body is shown; Figure 8 A schematic diagram showing the blade tip damage area on the blade disk body. Figure 1 , 3 8. A method for preventing sand by partitioning an integral axial flow blade disk, comprising the following steps:

[0071] Using ultrasonic waves to clean the blades 2 of the blade disc body 1 and remove the oxide layer;

[0072] According to the damage differences in different areas of the blade 2, the blade 2 is divided into a first damaged area 31 of the blade basin, a second damaged area 32 of the blade basin, a first damaged area 41 of the blade back, a second damaged area 42 of the blade back, a damaged area 5 of the blade top and a non-damaged area 6;

[0073] The first damaged area 31 of the blade basin and the first damaged area 41 of the blade back are sprayed with an anti-erosion coating in different areas; the spraying thickness is 6 μm to 10 μm; the deposition rate is ≤ 1 μm / h;

[0074] Then, the second damaged area 32 of the blade basin, the second damaged area 42 of the blade back, the damaged area 5 of the blade top, and the first damaged area 31 of the blade basin and the first damaged area 41 of the blade back sprayed with the anti-erosion coating are sprayed with the anti-erosion coating in different areas; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0075] Performing mechanical shot peening or laser strengthening treatment on the undamaged area 6;

[0076] The surface condition of the anti-erosion coating is inspected; the adjacent anti-erosion coatings and the transition between the anti-erosion coating and the undamaged area 6 are inspected.

[0077] Specifically, mechanical shot peening or laser strengthening treatment can improve the surface quality of the blade 2, thereby improving the fatigue resistance of the blade 2.

[0078] Specifically, the material of the anti-erosion coating may be selected from but not limited to a mixture of one or more of TiN, ZrN, and Cr-CrAlN, which can greatly improve the anti-erosion capability of the blade disc body 1 while ensuring the aerodynamic performance and strength requirements of the blade disc body 1 .

[0079] Specifically, after the anti-erosion coating is sprayed, arc ion plating is used for deposition, and the deposition temperature of the anti-erosion coating is ≤500° C., thereby improving the anti-erosion capability of the blade disk.

[0080] Specifically, the material of the blade disc body 1 may be selected from but not limited to TC4 and TC11 titanium alloys, thereby ensuring the service life of the blade disc body 1 .

[0081] Specifically, the thickness of the same position of a plurality of blades 2 on the blade disk body 1 is ≤±2 μm, which can effectively reduce the influence of the coating on the mechanics of the substrate.

[0082] Specifically, the first blade pot damage area 31 and the second blade pot damage area 32 are located at the blade pot 24 of the blade 2 .

[0083] Specifically, the first blade back damaged area 41 and the second blade back damaged area 42 are located at the blade back 21 of the blade 2 .

[0084] Specifically, the blade tip damaged area 5 is located at the blade tip 22 of the blade 2 .

[0085] Specifically, both the blade base 24 and the blade back 21 of the blade 2 have the undamaged area 6 .

[0086] In some embodiments, the difference in the joints of the anti-erosion coatings of the first damage area 31 of the blade basin and the second damage area 32 of the blade basin, the first damage area 41 of the blade back and the second damage area 42 of the blade back, the blade top damage area 5 and the first damage area 31 of the blade basin, the blade top damage area 5 and the first damage area 41 of the blade back, the blade top damage area 5 and the second damage area 32 of the blade basin, and the blade top damage area 5 and the second damage area 42 of the blade back are all ≤10μm; the difference ≤10μm can ensure the aerodynamic performance and strength requirements of the blade disc body 1, while greatly improving the erosion resistance of the blade disc body 1.

[0087] Specifically, the anti-erosion coatings of the first damaged area 31 of the blade basin and the second damaged area 32 of the blade basin, the first damaged area 41 of the blade back and the second damaged area 42 of the blade back, the blade top damaged area 5 and the first damaged area 31 of the blade basin, the blade top damaged area 5 and the first damaged area 41 of the blade back, the blade top damaged area 5 and the second damaged area 32 of the blade basin, and the blade top damaged area 5 and the second damaged area 42 of the blade back are all continuous, thereby achieving the purpose of protection.

[0088] Figure 4 Figure 2 shows a schematic diagram of the blade pot damage area on the blade disk body. Figure 4 As shown, in some embodiments, the blade basin damage area 3 includes a blade basin first damage area 31 and a blade basin second damage area 32 , and the wear degree of the blade basin first damage area 31 is greater than the wear degree of the blade basin second damage area 32 and the blade tip damage area 5 .

[0089] In some embodiments, the thickness of the anti-erosion coating sprayed on the first damaged area 31 of the blade basin is 8 μm, so as to significantly improve the anti-erosion capability of the blade disc body 1 while ensuring the aerodynamic performance and strength requirements of the blade disc body 1 .

[0090] In some embodiments, the thickness of the anti-erosion coating sprayed on the second damaged area 32 of the blade basin is 6 μm; while ensuring the aerodynamic performance and strength requirements of the blade disc body 1, the anti-erosion ability of the blade disc body 1 is greatly improved.

[0091] Figure 6 Figure 2 shows a schematic diagram of the blade back damage area on the blade disc body. Figure 6 As shown, in some embodiments, the blade back damage area 4 includes a blade back first damage area 41 and a blade back second damage area 42 , and the wear degree of the blade back first damage area 41 is greater than the wear degree of the blade back second damage area 42 and the blade top damage area 5 .

[0092] In some embodiments, the thickness of the anti-erosion coating sprayed on the first damaged area 31 of the blade basin is 8 μm, so as to significantly improve the anti-erosion capability of the blade disc body 1 while ensuring the aerodynamic performance and strength requirements of the blade disc body 1 .

[0093] In some embodiments, the thickness of the anti-erosion coating sprayed on the second damaged area 32 of the blade basin is 7 μm; while ensuring the aerodynamic performance and strength requirements of the blade disc body 1, the anti-erosion ability of the blade disc body 1 is greatly improved.

[0094] In some embodiments, the second damaged area 32 of the blade basin, the second damaged area 42 of the blade back and the undamaged area 6 after spraying the anti-erosion coating meet the following height conditions:

[0095] H1 is 50% to 70% of H;

[0096] H2 is 50% to 70% of H;

[0097] H3 is 80% to 95% of H;

[0098] Among them, H is the height of the blade 2; H1 is the height of the second damaged area 32 of the blade basin; H2 is the height of the undamaged area 6; H3 is the height of the second damaged area 42 on the back of the blade; the blade 2 after spraying the anti-erosion coating meets this height condition to play a protective role and to ensure the aerodynamic performance and strength requirements of the blade disc body 1 while greatly improving the erosion resistance of the blade disc body 1.

[0099] In some embodiments, after the anti-erosion coating is sprayed, the first damaged area 31 of the blade basin, the first damaged area 41 of the blade back, and the damaged area 4 of the blade back meet the following length conditions:

[0100] L1 is 40% to 60% of L;

[0101] L2 is 20% to 40% of L;

[0102] L3 is 40% to 60% of L;

[0103] Among them, L is the chord length of the blade 2; L1 is the chord length of the first damaged area 31 of the blade basin; L2 is the chord length of the first damaged area 41 of the blade back; L3 is the chord length of the damaged area 4 of the blade back. The blade 2 after spraying the anti-erosion coating meets this length condition to play a protective role, and can greatly improve the anti-erosion ability of the blade disc body 1 while ensuring the aerodynamic performance and strength requirements of the blade disc body 1.

[0104] Figure 5 A schematic diagram showing the angles formed between the first damaged area of ​​the blade basin and the second damaged area of ​​the blade basin and the blade. Figure 7 The diagram shows the angles formed by the first damaged area on the back of the leaf and the second damaged area on the back of the leaf with the leaf. Figure 5 , 6In some embodiments, after spraying the anti-erosion coating, the first damaged area 31 of the blade basin, the first damaged area 41 of the blade back and the second damaged area 42 of the blade back meet the following angle conditions:

[0105] a1° is 60°~80°;

[0106] a2° is 70°~90°;

[0107] a3° is 10°~40°;

[0108] a4° is 10°~40°;

[0109] a5° is 20°~40°;

[0110] a6° is 10°~30°;

[0111] Among them, a1° is the angle between the first damaged area 31 of the blade basin and the blade top 22 of the blade 2; a2° is the angle between the second damaged area 32 of the blade basin and the trailing edge 23 of the blade 2; a3° is the angle between the first damaged area 31 of the blade basin and the leading edge 25 of the blade 2; a4° is the angle between the second damaged area 32 of the blade basin and the hub 11 of the blade disk body 1; a5° is the angle between the first damaged area 41 of the blade back and the blade top 22 of the blade 2; a6° is the angle between the second damaged area 42 of the blade back and the blade top 22 of the blade 2. The blade 2 after spraying the anti-erosion coating meets this angle condition to play a protective role, and can greatly improve the anti-erosion ability of the blade disk body 1 while ensuring the aerodynamic performance and strength requirements of the blade disk body 1.

[0112] In some embodiments, after the anti-erosion coating is sprayed, the first damaged area 31 of the blade basin, the first damaged area 41 of the blade back, and the second damaged area 42 of the blade back meet the following rounding conditions:

[0113] R1 is 15 to 30 mm;

[0114] R2 is 10 to 30 mm;

[0115] Among them, R1 is the rounding diameter of the first damaged area 31 of the blade basin; R2 is the rounding diameter of the second damaged area 32 of the blade basin. The blade 2 after spraying the anti-erosion coating meets the rounding condition to play a protective role, and can greatly improve the anti-erosion ability of the blade disc body 1 while ensuring the aerodynamic performance and strength requirements of the blade disc body 1.

[0116] In some embodiments, the surface roughness of the anti-erosion coating is ≤Ra0.8 μm, which ensures the aerodynamic performance of the blade disc body 1 and improves the anti-erosion capability of the blade disc body 1 .

[0117] Figure 2A block diagram of an integral axial flow blade disk partition sand control system is shown. Figure 2 As shown, an integral axial flow blade disk partitioned sand control system comprises:

[0118] Cleaning module: used to clean the blades 2 of the blade disc body 1 and remove the oxide layer by using ultrasonic waves;

[0119] Area division module: used for dividing the blade 2 into a first damaged area 31 of the blade basin, a second damaged area 32 of the blade basin, a first damaged area 41 of the blade back, a second damaged area 42 of the blade back, a damaged area 5 of the blade top and a non-damaged area 6 according to the damage differences of different areas of the blade 2;

[0120] Initial spraying module: spraying the anti-erosion coating on the first damaged area 31 of the blade basin and the first damaged area 41 of the blade back in different areas; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0121] Spraying module again; spraying the anti-erosion coating on the second damaged area 32 of the blade basin, the second damaged area 42 of the blade back, the blade top damaged area 5, and the first damaged area 31 of the blade basin and the first damaged area 41 of the blade back sprayed with the anti-erosion coating; the spraying thickness is 6μm to 10μm; the deposition rate is ≤1μm / h;

[0122] Strengthening treatment module: used for strengthening treatment of the undamaged area 6;

[0123] Inspection module: used to inspect the surface state of the anti-erosion coating, the adjacent anti-erosion coating, and the transition between the anti-erosion coating and the undamaged area 6.

[0124] Embodiment 2:

[0125] This embodiment conducts a comparative experiment, that is, a performance comparison experiment of a blade disc body 1 with an anti-erosion coating and a blade disc body 1 without an anti-erosion coating. See Table 1 for a performance comparison table of a blade disc body 1 with an anti-erosion coating and a blade disc body 1 without an anti-erosion coating.

[0126]

[0127] Table 1

[0128] From the performance comparison table of the blade disc body 1 with the anti-erosion coating and the blade disc body 1 without the anti-erosion coating, it can be concluded that the anti-erosion performance of the blade 2 with the anti-erosion coating is 3.6 times higher than that of the blade 2 without the anti-erosion coating, and it has basically no effect on the mechanical properties of the substrate. The simulation results also show that there is basically no effect on the aerodynamic performance.

[0129] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for controlling sand by partitioning an integral axial flow blade disk, characterized in that: The following steps are involved: Using ultrasonic waves to clean the blades (2) of the blade disc body (1) and remove the oxide layer; According to the damage differences of different regions of the blade (2), the blade (2) is divided into a first damaged region (31) of the blade base, a second damaged region (32) of the blade base, a first damaged region (41) of the blade back, a second damaged region (42) of the blade back, a damaged region (5) of the blade top and a non-damaged region; The first damaged area (31) of the blade base and the first damaged area (41) of the blade back are sprayed with an anti-erosion coating in different areas; the spraying thickness is 6 μm to 10 μm; and the deposition speed is ≤1 μm / h; Then, the second damaged area (32) of the blade basin, the second damaged area (42) of the blade back, the damaged area (5) of the blade top, and the first damaged area (31) of the blade basin and the first damaged area (41) of the blade back which have been sprayed with the anti-erosion coating are sprayed in different areas; the spraying thickness is 6 μm to 10 μm; and the deposition speed is ≤1 μm / h; Mechanical shot peening or laser strengthening treatment is performed on the undamaged area (6); The surface condition of the anti-erosion coating is inspected; adjacent anti-erosion coatings and the transition between the anti-erosion coating and the undamaged area (6) are inspected.

2. The integral axial flow blade disk partition sand control method according to claim 1, characterized in that: The difference in the junction of the anti-erosion coatings of the first damaged area (31) of the blade basin and the second damaged area (32) of the blade basin, the first damaged area (41) of the blade back and the second damaged area (42) of the blade back, the blade tip damaged area (5) and the first damaged area (31) of the blade basin, the blade tip damaged area (5) and the first damaged area (41) of the blade back, the blade tip damaged area (5) and the second damaged area (32) of the blade basin, and the blade tip damaged area (5) and the second damaged area (42) of the blade back is ≤10 μm.

3. The integral axial flow blade disk partition sand control method according to claim 2, characterized in that: The degree of wear of the first damaged area (31) of the blade basin is greater than the degrees of wear of the second damaged area (32) of the blade basin and the damaged area (5) of the blade tip.

4. The method for controlling sand by partitioning an integral axial flow blade disk according to claim 2, characterized in that: The degree of wear of the first damaged area (41) on the blade back is greater than the degrees of wear of the second damaged area (42) on the blade back and the damaged area (5) on the blade tip.

5. The method for controlling sand by partitioning an integral axial flow blade disk according to claim 4, characterized in that: The second damaged area (32) of the blade basin, the second damaged area (42) of the blade back and the undamaged area (6) after spraying the anti-erosion coating meet the following height conditions: H1 is 50% to 70% of H; H2 is 50% to 70% of H; H3 is 80% to 95% of H; Among them, H is the height of the blade (2); H1 is the height of the second damaged area (32) of the blade base; H2 is the height of the undamaged area (6); and H3 is the height of the second damaged area (42) on the back of the blade.

6. The method for controlling sand by partitioning an integral axial flow blade disk according to claim 4, characterized in that: After the anti-erosion coating is sprayed, the first damaged area (31) of the blade basin, the first damaged area (41) of the blade back, and the damaged area (4) of the blade back meet the following length conditions: L1 is 40% to 60% of L; L2 is 20% to 40% of L; L3 is 40% to 60% of L; Wherein, L is the chord length of the blade (2); L1 is the chord length of the first damaged area (31) of the blade base; L2 is the chord length of the first damaged area (41) of the blade back; and L3 is the chord length of the damaged area (4) of the blade back.

7. The method for controlling sand by partitioning an integral axial flow blade disk according to claim 4, characterized in that: After the anti-erosion coating is sprayed, the first damaged area (31) of the blade basin, the first damaged area (41) of the blade back, and the second damaged area (42) of the blade back meet the following angle conditions: a1° is 60°~80°; a2° is 70°~90°; a3° is 10°~40°; a4° is 10°~40°; a5° is 20°~40°; a6° is 10°~30°; Wherein, a1° is the angle between the first damaged area (31) of the blade basin and the top (22) of the blade (2); a2° is the angle between the second damaged area (32) of the blade basin and the trailing edge (23) of the blade (2); a3° is the angle between the first damaged area (31) of the blade basin and the leading edge (25) of the blade (2); a4° is the angle between the second damaged area (32) of the blade basin and the hub (11) of the blade disk body (1); a5° is the angle between the first damaged area (41) of the blade back and the top (22) of the blade (2); and a6° is the angle between the second damaged area (42) of the blade back and the top (22) of the blade (2).

8. The method for controlling sand by partitioning an integral axial flow blade disk according to claim 4, characterized in that: After the anti-erosion coating is sprayed, the first damaged area (31) of the blade base, the first damaged area (41) of the blade back, and the second damaged area (42) of the blade back meet the following rounding conditions: R1 is 15 to 30 mm; R2 is 10 to 30 mm; Wherein, R1 is the rounded diameter of the first damaged area (31) of the blade basin; and R2 is the rounded diameter of the second damaged area (32) of the blade basin.

9. The method for controlling sand by partitioning an integral axial flow blade disk according to any one of claims 1 to 8, characterized in that: The surface roughness of the anti-erosion coating is ≤Ra0.8μm.

10. An integral axial flow blade disk partition sand control system, characterized in that: include: A cleaning module: used for cleaning the blades (2) of the blade disc body (1) using ultrasonic waves and removing the oxide layer; A region division module: used for dividing the blade (2) into a first damaged region (31) of the blade basin, a second damaged region (32) of the blade basin, a first damaged region (41) of the blade back, a second damaged region (42) of the blade back, a damaged region (5) of the blade top and a non-damaged region (6) according to the damage differences of different regions of the blade (2); Initial spraying module: spraying the anti-erosion coating on the first damaged area (31) of the blade base and the first damaged area (41) of the blade back in sections; the spraying thickness is 6 μm to 10 μm; the deposition speed is ≤1 μm / h; The module is sprayed again; the anti-erosion coating is then sprayed on the second damaged area (32) of the blade basin, the second damaged area (42) of the blade back, the damaged area (5) of the blade top, and the first damaged area (31) of the blade basin and the first damaged area (41) of the blade back which have been sprayed with the anti-erosion coating; the spraying thickness is 6 μm to 10 μm; and the deposition rate is ≤1 μm / h; Strengthening treatment module: used for strengthening treatment of the undamaged area (6); Inspection module: used to inspect the surface state of the anti-erosion coating, the adjacent anti-erosion coatings, and the transition between the anti-erosion coating and the undamaged area (6).

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