Fig. 1. Obtained boundary of point cloud. (a) Point set on horizontal plane; (b) boundary points of point set

Fig. 2. Flowchart of getting processing point

Fig. 3. Generation of follow-up trajectory. (a) Generation of next trajectory; (b) judgement of trajectory's boundary

Fig. 4. Posture of cladding nozzle

Fig. 5. Collection of part's point cloud. (a) Part on horizontal plane; (b) obtained point cloud

Fig. 6. Comparison of adjacent cladding-passes distance. (a) Isometric slicing method; (b) proposed method

Fig. 7. Trajectory of laser cladding

Fig. 8. Photo of cladding layers

Fig. 9. Thickness of cladding layer

Fig. 10. Distance of adjacent cladding-passes

Fig. 11. Microstructures in middle of different cladding layers. (a) The first cladding-pass; (b) the eighth cladding-pass; (c) the sixteenth cladding-pass; (d) the twenty-fourth cladding-pass; (e) the thirty-second cladding-pass; (f) the thirty-ninth cladding-pass

Fig. 12. Hardness of cladding layer