A kind of additive/equal material preparation method of blade tenon
A blade tenon and tenon technology, which is applied in the field of metal parts process design and repair, can solve the problems of expensive equipment, high cost, complex structure of aeroengine blades, etc., and achieve the effect of improving fretting fatigue life and significant engineering significance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0058] The first step (S01): the cross-sectional area of the wear scar is measured to be 2x10 6 μm 2 , the wear scar length is 6μm, and the wear scar volume is (2x10 6 )μm 2 x6μm=1.2x10 7 μm 3 , the ratio of wear volume to tenon volume: 1.2x10 7 / (4x10 9 ) = 0.3%.
[0059] The second step (S02): when there are wear marks and the volume is less than 1.0% of the volume of the tenon, perform S02-2; after the surface of the tenon is polished, it is subjected to performance recovery heat treatment, and the surface oxide layer is removed by mechanical grinding and the roughness reaches Ra3.0. After the standard first aging temperature of 1100°C for 8 hours, place it in a metal fixture with a thermal conductivity of 50W / mK to maintain a high temperature gradient in the process; the laser printing power is 24KW, the beam spot diameter is 2mm, and the laser unit The energy density is 24000 / (0.2x0.2)=6x10 5 W / cm 2 , to ensure that the structure maintains single crystal befor...
Embodiment 2
[0063] The first step (S01): the measured cross-sectional area of the wear scar is 7x10 8 μm 2 , the wear scar length is 10μm, and the wear scar volume is (7x10 8 )μm 2 x10μm=7x10 9 μm 3 , ratio of wear volume to tenon volume: 7x10 9 / (1x10 11 ) = 7%.
[0064] The second step (S02): when the volume of the wear scar is greater than 1.0% of the volume of the tenon, execute S02-1; after the tenon is cut and polished, the bottom of the blade is used as the base material to repair the tenon part. After the mortise is sliced, the scanning path of each layer is bow-shaped, and the distance between the bows is g 0 Set to 2mm; the total length of the tenon is 20mm, and the layer spacing is set to 0.1mm; when the value is set, the smaller the bow-shaped spacing and the narrower the layer spacing are, the more unfavorable it is for heat dissipation. Therefore, a small temperature gradient is not conducive to the formation of single crystals. If the bow-shaped spacing is too lar...
Embodiment 3
[0068] The first step (S01): there is no wear phenomenon on the new blade, and the wear scar volume is 0.
[0069] The second step (S02): For new unworn blades, use mechanical grinding to remove the surface oxide layer and make the roughness reach Ra3.0; the greater the thermal conductivity of the fixture, the greater the temperature gradient when the part is cooled, which is important for maintaining single crystal The better; when the thermal conductivity is less than the specified value, miscellaneous crystals will be formed due to insufficient temperature gradient during the solidification process. Therefore, when selecting a fixture, the greater the thermal conductivity, the better. Then put the tenon in a fixture with a thermal conductivity of 65W / mK for remelting or printing; the laser power is 5400W, the beam spot diameter is 3mm, and the laser unit energy density is 5400 / (0.3x0.3)=6x10 4 W / cm 2 , to ensure that the structure maintains single crystal before and after ...
PUM
| Property | Measurement | Unit |
|---|---|---|
| area | aaaaa | aaaaa |
| area | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More