Method for laser cladding of hard alloy coating on crown of turbine blade
A laser cladding and cemented carbide technology, applied in metal material coating process, coating and other directions, can solve the problems of affecting the quality of cemented carbide coating, easy to generate pores, low cladding efficiency, etc., to improve the cladding efficiency. Efficiency, avoidance of blowholes, improved quality effects
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Embodiment 1
[0016] 1. Blade cleaning: DZ125 high-temperature alloy turbine blade parallelogram blade crown meshing surface cladding hard alloy, use absorbent cotton dipped in acetone to wipe the blade to be laser cladding, remove the dirt on the laser cladding position
[0017] 2. Blade clamping: Fix the fixture on the working turntable in the protection room of the laser three-dimensional forming equipment, and then install the blade on the fixture. Cover the surface with a protective plate, the protective plate is a copper plate with a thickness of 0.4mm, use aluminum foil tape to fix the protective plate, and close the protective room;
[0018] 3. Vacuum drying of cemented carbide powder: Put CoCrMo cemented carbide powder in a vacuum oven, vacuum to ≤0.1Pa, then heat to 120°C, keep warm for 1h, and cool to room temperature with the furnace, the particle size of cemented carbide powder 100 mesh to 200 mesh;
[0019] 4. Laser cladding: CoCrMo hard alloy layer is clad on the meshing sur...
Embodiment 2
[0021] 1. Blade cleaning: DZ125 superalloy turbine blade serrated blade crown meshing surface cladding carbide, use absorbent cotton dipped in acetone to wipe the part of the blade to be laser cladding, remove the dirt on the part to be laser cladding
[0022] 2. Blade clamping: Fix the fixture on the working turntable in the protection room of the laser three-dimensional forming equipment, and then install the blade on the fixture. Cover the surface with a protective plate, the protective plate is a copper plate with a thickness of 0.8mm, use aluminum foil tape to fix the protective plate, and close the protective room;
[0023] 3. Vacuum drying of cemented carbide powder: Put CoCrMo cemented carbide powder in a vacuum oven, vacuum to ≤0.1Pa, then heat to 120°C, keep warm for 1h, and cool to room temperature with the furnace, the particle size of cemented carbide powder 100 mesh to 200 mesh;
[0024] 4. Laser cladding: CoCrMo hard alloy layer is clad on the meshing surface o...
Embodiment 3
[0026] 1. Blade cleaning: DZ125 superalloy turbine blade serrated blade crown meshing surface cladding carbide, use absorbent cotton dipped in absolute ethanol to wipe the part of the blade to be laser cladding, remove the dirt on the part to be laser cladding
[0027] 2. Blade clamping: Fix the fixture on the working turntable in the protection room of the laser three-dimensional forming equipment, and then install the blade on the fixture. Cover the surface with a protective plate, the protective plate is a copper plate with a thickness of 0.8mm, use aluminum foil tape to fix the protective plate, and close the protective room;
[0028] 3. Vacuum drying of cemented carbide powder: put CoCrW cemented carbide powder in a vacuum oven, vacuumize to ≤0.1Pa, then heat to 120°C, keep warm for 1h, and cool to room temperature with the furnace, the particle size of cemented carbide powder 100 mesh to 200 mesh;
[0029] 4. Laser cladding: CoCrW hard alloy layer is clad on the meshing...
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