Method for repairing aircraft engine parts scrap mould with broadband laser cladding
A technology of laser cladding and laser repair, which is applied in the field of metallurgy, can solve problems such as cladding layer cracks and impacts, and achieve the effects of uniform grain refinement, high bonding strength, and uniform distribution
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Embodiment 1
[0015] Embodiment 1 of the present invention: Broadband laser lap cladding repair scrapped mold of aero-engine parts: the scrapped mold samples of aero-engine parts are cut with molybdenum wire, and the surface of the sample to be clad is treated with metallographic sandpaper before laser cladding Grinding, derusting and deburring, and cleaning with acetone for later use; laser cladding alloy powder adopts laser cladding special alloy powder HT-1 (weighing alloy powder with a particle size of -140 to 400 mesh: 80.0wt.% Fe, 0.3wt. %C, 1.5wt.%Si, 2.0wt.%B, 1.2wt.%Ni and 15.0wt.%Cr, ground in a mortar for 4 to 8 hours to make them fully mixed, and the alloy powder was sent simultaneously Powder mode; adopt broadband TJ-HL-T5000 continuous CO 2 The laser performs laser repair on the mold sample, selects the mixed low-order mode in the cavity, and focuses on the copper mirror transmission with a focal length of 330mm; the laser lap cladding is carried out according to the first, th...
Embodiment 2
[0017] Embodiment 2 of the present invention: Broadband laser lap cladding repairs scrapped molds for low and medium carbon steel parts: the samples of scrapped molds for low and medium carbon steel parts are cut by molybdenum wire, and metallographic sandpaper is used for laser cladding. The surface of the sample to be clad is polished, derusted and deburred, and cleaned with acetone for later use; the laser cladding alloy powder adopts laser cladding special alloy powder HT-1 (composed of 80.0wt.% Fe, 0.3wt.% C, 1.5wt .%Si, 2.0wt.%B, 1.2wt.%Ni and 15.0wt.%Cr powders are ground and mixed), alloy powders are fed synchronously; broadband continuous CO 2 The laser performs laser repair on the mold sample, selects the mixed low-order mode in the cavity, and focuses on the copper mirror transmission with a focal length of 330mm; the laser lap cladding is carried out according to the first, third, fifth, ... (2n- 1) The first pass, the second pass, the fourth pass, the sixth pass, ...
Embodiment 3
[0019] Embodiment 3 of the present invention: broadband laser lap cladding repair of scrapped molds for low and medium carbon alloy steel parts: the samples of scrapped molds for low and medium carbon alloy steel parts are cut by molybdenum wire, and metallography is used before laser cladding Grind the surface of the sample to be clad with sandpaper, remove rust and burrs, and clean it with acetone for later use; the laser cladding alloy powder adopts laser cladding special alloy powder HT-1; adopts broadband continuous CO 2 The laser performs laser repair on the mold sample, selects the mixed low-order mode in the cavity, and focuses on the copper mirror transmission with a focal length of 330mm; the laser lap cladding is carried out according to the first, third, fifth, ... (2n- 1) The first pass, the second pass, the fourth pass, the sixth pass, ... the 2nth pass are carried out sequentially; the laser cladding process parameters are: laser output power 3.6KW, scanning spee...
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