Method for repairing damage of blade leading edge of TC4 titanium alloy integral bladed-disk structure
A technology for overall blisk and damage repair, applied in the direction of climate sustainability, high-efficiency propulsion technology, metal material coating technology, etc., can solve problems such as easy deformation and collapse, narrow passage, large bending and torsion, etc., to reduce heat Influence and reduce the effect of heat input
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[0030] The air intake side of the overall blisk of a certain type of aero-engine compressor is damaged, and the repair method of the present invention is used to repair it. The steps are as follows:
[0031] S1. Mark the wounded part on the air intake side, measure and determine the depth of the damaged area D = 0.6 mm, and the width of the damaged area H = 1.6 mm.
[0032] S2. Since 3.464D=3.464×0.6=2.0784, so H≤3.464D, the damaged area of the blade is ground into a 120° groove with a depth of 0.6mm and a width of 2.078mm.
[0033] S3. Use TC4 powder to repair the first layer of laser on the groove, the laser power is 240W, the scanning speed is 3mm / s, the focal length is 3, the powder feeding rate is 3g / min, and the repairing path is from P10 to P11 to P12.
[0034] S4. Use TC4 powder to repair the groove with the second laser layer. The laser power is 220W, the scanning speed is 3mm / s, the focal length is 3, and the powder feeding rate is 3g / min. The repairing path is fro...
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