Cladding Forming Technology of Cross Structure Based on Inside-Laser Powder Feeding

Jianbin Li; Tuo Shi; Geyan Fu; Mingyu Wang; Yu Wang; Tianyi Li; Guang Liu

doi:10.3788/AOS202242.1614002

Acta Optica Sinica, Volume. 42, Issue 16, 1614002(2022)

Cladding Forming Technology of Cross Structure Based on Inside-Laser Powder Feeding

Jianbin Li¹, Tuo Shi^2、*, Geyan Fu^1、**, Mingyu Wang¹, Yu Wang¹, Tianyi Li², and Guang Liu¹

Author Affiliations

¹School of Mechanical and Electrical Engineering, Soochow University, Suzhou 215021, Jiangsu , China

²School of Optoelectronic Science and Engineering, Soochow University, Suzhou 215006, Jiangsu , China

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Abstract Get PDF(in Chinese)

Figures & Tables(9)

Fig. 1. Principle of inside-laser powder feeding

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Fig. 2. Spatial distribution of powder

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Fig. 3. Ideal cross section of cross intersection

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Fig. 4. [in Chinese]

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Fig. 5. [in Chinese]

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Fig. 6. Microhardness measurement. (a) Schematic diagram of sampling location; (b) hardness values at positions 1-3; (c) hardness values at positions 4-6

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Table 1. Chemical composition of Fe316 iron-based powder
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Table 1. Chemical composition of Fe316 iron-based powder
Element Fe Cr Ni Mo Mn Si N O P C S
Mass fraction /% Bal. 17.300 12.400 2.300 2.100 1.000 0.100 0.100 0.045 0.030 0.030

Table 2. Parameters of initial single-channel cladding layer after optimization
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Table 2. Parameters of initial single-channel cladding layer after optimization
Laser power /W
Defocusing
distance /mm
Scanning speed /(mm·s^-1) Power feeding rate /(g·min^-1) Carrier gas flow /MPa
1050 -3.5 7.5 24.5 0.3

Table 3. Width, height and surface topography of single-channel cladding layer at different scanning speeds

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Table 3. Width, height and surface topography of single-channel cladding layer at different scanning speeds

No.	Scanning speed /(mm·s^-1)	Width /mm	Height /mm
1	5.5	2.89	0.92
2	6.0	2.88	0.83
3	6.5	2.86	0.75
4	7.0	2.83	0.70
5	7.5	2.82	0.66
6	8.0	2.80	0.60
7	8.5	2.82	0.56
8	9.0	2.80	0.51
9	9.5	2.74	0.48
10	10.0	2.78	0.45
11	10.5	2.74	0.40
12	11.0	2.78	0.36
13	11.5	2.74	0.34
14	12.0	2.68	0.29
15	12.5	2.70	0.26
16	13.0	2.66	0.22
17	13.5	2.64	0.18
18	14.0	2.60	0.17
19	14.5	2.60	0.16
20	15.0

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Jianbin Li, Tuo Shi, Geyan Fu, Mingyu Wang, Yu Wang, Tianyi Li, Guang Liu. Cladding Forming Technology of Cross Structure Based on Inside-Laser Powder Feeding[J]. Acta Optica Sinica, 2022, 42(16): 1614002

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