Deposition techniques

Laser cladding troubleshooting

Problem	Cause	Solution
Deposit peels off	1. Poor preparation of the surface (oxidized or dirty surface) 2. Too low preheating temperature 3. Too fast cladding speed 4. Wrong parameters / Bad bonding	Clean the surface well Increase preheat Increase power
Cracks	1. Overheating / too high welding power, too high dilution 2. Too low preheating temperature 3. Too fast cooling 4. Critical base material	Reduce welding power Use preheating Reduce cooling speed Slow cooling / controlled cooling Use buffer layer
Porosity	1. Poor preparation of the surface 2. Incorrect parameters (welding power, up-slope, down-slope)	Clean the surface well Sand blast well Adjust parameters
Clogging	1. Incorrect particle size 2. Too low temperature in the cooling water results in condensation 3. None spherical particles in the powder used	Reduce fines content Adjust and control the cooling water temperature

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