Research on Laser Cladding Forming Process of Circumferentially Inclined Thin-Walled Cylinders

Sun Jiayu; Yu Tianbiao; Zhao Yu; Yang Lin; Guan Chuang

doi:10.3788/CJL201845.0802004

Chinese Journal of Lasers, Volume. 45, Issue 8, 802004(2018)

Research on Laser Cladding Forming Process of Circumferentially Inclined Thin-Walled Cylinders

Sun Jiayu, Yu Tianbiao, Zhao Yu, Yang Lin, and Guan Chuang

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[in Chinese]

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Figures & Tables(9)

Fig. 1. Experimental setup. (a) Schematic; (b) equipment

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Fig. 2. Schematic of cladding model. (a) Front view; (b) left view; (c) top view

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Fig. 3. Schematic of cladding. (a) Strategy; (b) reverse scanning method; (c) measurement method

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Fig. 4. Morphologies of cladding specimens under different offset angles. (a) 0.25°; (b) 0.50°; (c) 0.75°; (d) 1.00°; (e) 1.25°

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Fig. 5. Errors in width and height of specimens under different offset central angles

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Table 1. Parameters of cladding experiment

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Table 1. Parameters of cladding experiment

Parameter	Value
Laser power /W	350.000
Scanning speed /(mm·s^-1)	5.500
Powder feed rate /(g·min^-1)	11.650
Shielding gas flow rate /(L·h^-1)	15.000
Z-axis increment /mm	0.224
Height of first layer /mm	0.316
Radius of powder jet /mm	0.093-0.150
Radius of laser beam /mm	1.000
Density of powder /(kg·m^-3)	4520.000

Table 2. Chemical compositions of 316L stainless steel powder (mass fraction, %)
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Table 2. Chemical compositions of 316L stainless steel powder (mass fraction, %)
Element C Cr Mo Si Ni Mn Fe
Theoretical value 0.050 12.00-16.00 2.00-3.00 0.30-0.80 10.00-15.00 0.80-1.60 Bal.
Measured value 0.03 18.62 2.53 0.54 12.72 1.35 Bal.

Table 3. Offsets obtained by two methods
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Table 3. Offsets obtained by two methods
Specimen 1 Specimen 2 Specimen 3 Specimen 4 Specimen 5
β /(°) 0.25 0.50 0.75 1.00 1.25
ΔY₁ /mm 0.04 0.07 0.11 0.15 0.18
ΔY₂ /mm 0.04 0.09 0.13 0.17 0.22

Table 4. Theoretical value and experimentally measured value

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Table 4. Theoretical value and experimentally measured value

Item	Specimen 1	Specimen 2	Specimen 3	Specimen 4	Specimen 5
ΔZ /mm	0.224	0.224	0.224	0.224	0.224
β /(°)	0.25	0.50	0.75	1.00	1.25
ΔY /mm	0.04	0.07	0.11	0.15	0.18
α₀ /(°)	9.38	18.05	25.95	33.10	39.10
H₀ /mm	4.572	4.572	4.572	4.572	4.572
H /mm	4.63	4.60	4.58	4.29	4.04
δ /%	1.27	0.61	0.17	6.17	11.64
b₀	1.80	1.80	1.80	1.80	1.80
b /mm	1.75	1.78	1.82	1.77	1.89
φ /%	2.78	1.11	1.11	1.67	5.00

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Sun Jiayu, Yu Tianbiao, Zhao Yu, Yang Lin, Guan Chuang. Research on Laser Cladding Forming Process of Circumferentially Inclined Thin-Walled Cylinders[J]. Chinese Journal of Lasers, 2018, 45(8): 802004

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