Influence Factors of Fiber Laser Welding Modes for 304 Stainless Steel

Xiaochun Leng; Shouyi Luo; Yanbao Li; Weifang Jin

doi:10.3788/LOP55.111402

Journals >Laser & Optoelectronics Progress >Volume 55 >Issue 11 >Page 111402 > Article

Laser & Optoelectronics Progress
Vol. 55, Issue 11, 111402 (2018)

Influence Factors of Fiber Laser Welding Modes for 304 Stainless Steel

Xiaochun Leng^1、2、*, Shouyi Luo², Yanbao Li^1、2, and Weifang Jin²

Author Affiliations

¹ School of Material Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China

² Shanghai No.1 Machine Tool Works Co., Ltd., Shanghai 201306, China

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DOI: 10.3788/LOP55.111402 Cite this Article Set citation alerts

Xiaochun Leng, Shouyi Luo, Yanbao Li, Weifang Jin. Influence Factors of Fiber Laser Welding Modes for 304 Stainless Steel[J]. Laser & Optoelectronics Progress, 2018, 55(11): 111402 Copy Citation Text

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Fig. 1. Test point distribution when interactive action included. (a) Power density-welding speed; (b) heat input-defocus distance

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Fig. 2. Typical weld shapes. (a) Circular arc shape; (b) triangular shape; (c) nail head shape; (d) nail shape

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Fig. 3. Relationship between each factor and test result. (a) Laser power P; (b) welding speed v; (c) spot area S; (d) power density Q; (e) heat input E; (f) heat input density e

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TestNo.	Welding parameter				Dependent variable
TestNo.	LaserpowerP /kW	Travelspeedv /(mm·s^-1)	Defocusdistancez /mm	Spot areaS /mm²	PowerdensityQ /(10⁵ W·cm^-2)	Heat inputE / (J·mm^-1)	Heat inputdensitye /(J·mm^-3)
1	1.27	60	6	0.492	2.58	21.17	43.04
2	1.33	85	2	0.397	3.35	15.65	39.44
3	1.42	55	9	0.625	2.27	25.82	41.28
4	1.50	80	5	0.459	3.27	18.75	40.84
5	1.54	50	1	0.388	3.97	30.80	79.42
6	1.65	75	8	0.575	2.87	22.00	38.26
7	1.74	45	4	0.432	4.02	38.67	89.43
8	1.80	70	0	0.385	4.68	25.71	66.82
9	1.84	40	7	0.530	3.47	46.00	86.73
10	1.95	65	3	0.412	4.74	30.00	72.89

Table 1. Test plan of single-factor uniform design

TestNo.	Welding parameter				Dependent variable
TestNo.	LaserpowerP /kW	Travelspeedv /(mm·s^-1)	Defocusdistancez /mm	Spot areaS /mm²	PowerdensityQ /(10⁵ W·cm^-2)	HeatinputE / (J·mm^-1)	Heat inputdensity e /(J·mm^-3)
11	1.65	40	8	0.575	2.87	41.25	71.74
12	1.50	50	5	0.459	3.26	30.00	65.34
13	1.84	65	7	0.530	3.47	28.31	53.37
14	1.74	75	4	0.432	4.02	23.20	53.66
15	1.54	85	1	0.388	3.97	18.12	46.72
16	1.27	60	0	0.385	3.30	21.17	55.00
17	1.65	75	2	0.397	4.16	22.00	55.45
18	1.80	70	5	0.459	3.92	25.71	56.01
19	1.95	65	7	0.530	3.68	30.00	56.56
20	1.54	50	9	0.625	2.46	30.80	49.24

Table 2. Test plan when interactive action included

TestNo.	Welding parameter				Dependent variable			Type ofshape
TestNo.	LaserpowerP /kW		Travelspeedv /(mm·s^-1)	Defocusdistancez /mm	Spot areaS /mm²	PowerdensityQ /(10⁵ W·cm^-2)	HeatinputE /(J·mm^-1)	Heat inputdensitye /(J·mm^-3)
1	1.27	60	6	0.492	2.58	21.17	43.04	Circular arc (a)
2	1.33	85	2	0.397	3.35	15.65	39.44	Circular arc (a)
3	1.42	55	9	0.625	2.27	25.82	41.28	Circular arc (a)
4	1.50	80	5	0.459	3.27	18.75	40.84	Circular arc (a)
5	1.54	50	1	0.388	3.97	30.80	79.42	Nail head (c)
6	1.65	75	8	0.575	2.87	22.00	38.26	Circular arc (a)
7	1.74	45	4	0.432	4.02	38.67	89.43	Nail (d)
8	1.80	70	0	0.385	4.68	25.71	66.82	Nail head (c)
9	1.84	40	7	0.530	3.47	46.00	86.73	Nail (d)
10	1.95	65	3	0.412	4.74	30.00	72.89	Nail head (c)
11	1.65	40	8	0.575	2.87	41.25	71.74	Nail head (c)
12	1.50	50	5	0.459	3.26	30.00	65.34	Triangle (b)
13	1.84	65	7	0.530	3.47	28.31	53.37	Triangle (b)
14	1.74	75	4	0.432	4.02	23.20	53.66	Triangle (b)
15	1.54	85	1	0.388	3.97	18.12	46.72	Triangle (b)
16	1.27	60	0	0.385	3.30	21.17	55.00	Triangle (b)
17	1.65	75	2	0.397	4.16	22.00	55.45	Triangle (b)
18	1.80	70	5	0.459	3.92	25.71	56.01	Triangle (b)
19	1.95	65	7	0.530	3.68	30.00	56.56	Triangle (b)
20	1.54	50	9	0.625	2.46	30.80	49.24	Triangle (b)

Table 3. Summary of test results

Xiaochun Leng, Shouyi Luo, Yanbao Li, Weifang Jin. Influence Factors of Fiber Laser Welding Modes for 304 Stainless Steel[J]. Laser & Optoelectronics Progress, 2018, 55(11): 111402

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