中国激光, 2020, 47 (1): 0102006, 网络出版: 2020-01-09 复制并引用该论文  本文已被引 3 次  被引通知

图 & 表

图 1. 小孔内部压力示意图

Fig. 1. Diagram of internal pressure of keyhole

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图 2. 电信号检测装置和高速摄像机采集的图像。(a)等离子体图像;(b)等离子体面积;(c)电信号电压

Fig. 2. Collected images by electrical signal detector and high-speed camera. (a) Plasma images; (b) plasma area; (c) electrical signal voltage

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图 3. 焊接实验系统示意图

Fig. 3. Diagram of welding test system

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图 4. 不同热输入条件下A304不锈钢与Q235碳钢的焊缝截面、电信号及自相关函数。(a) P=1000 W, v=12 mm/s; (b) P=1100 W, v=12 mm/s; (c) P=1200 W, v=12 mm/s; (d) P=1300 W, v=12 mm/s; (e) P=1300 W, v=8 mm/s; (f) P=1300 W, v=4 mm/s; (g) P=1000 W, v=8 mm/s; (h) P=1100 W, v=8 mm/s; (i) P=1200 W, v=8 mm/s; (j) P=1300 W, v=8 mm/s; (k) P=1300 W, v=6 mm/s; (l) P=1300 W, v=4 mm/s

Fig. 4. Weld cross section, electrical signal, and autocorrelation function of A304 stainless steel and Q235 carbon steel under different heat input processes. (a) P=1000 W, v=12 mm/s; (b) P=1100 W, v=12 mm/s; (c) P=1200 W, v=12 mm/s; (d) P=1300 W, v=12 mm/s; (e) P=1300 W, v=8 mm/s; (f) P=1300 W, v=4 mm/s; (g) P=1000 W, v=8 mm/s; (h) P=1100 W, v=8 mm/s; (i) P=1200 W, v=8 mm/s; (j

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图 5. 等离子体电信号振荡周期τ_max与焊缝熔深d的特征关系

Fig. 5. Relationship between plasma electrical signal oscillation period τ_max and weld depth d

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图 6. A304不锈钢连续焊接过程的结果。(a)初始阶段电信号;(b)功率增加时的电信号;(c)功率下降时的电信号;(d)整个焊接过程的电信号;(e)自相关函数谱;(f)实际焊缝熔深及预测值

Fig. 6. Results of A304 stainless steel continuous welding process. (a) Electrical signal at initial stage; (b) electrical signal changes with increasing power; (c) electrical signal changes with decreasing power; (d) electrical signal throughout welding process; (e) autocorrelation function spectrum; (f) actual weld depth and predicted value

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图 7. Q235碳钢连续焊接过程的结果。(a)初始阶段电信号;(b)功率增加时的电信号;(c)功率下降时的电信号;(d)整个焊接过程的电信号;(e)自相关函数谱;(f)实际焊缝熔深及预测值

Fig. 7. Results of Q235 carbon steel continuous welding process. (a) Electrical signal at initial stage; (b) electrical signal changes with increasing power; (c) electrical signal changes with decreasing power; (d) electrical signal throughout welding process; (e) autocorrelation function spectrum; (f) actual weld depth and predicted value

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表 1恒定热输入条件下的焊接参数

Table1. Welding parameters for constant heat input process

Experimentalmaterial LaserpowerP /W Weldingspeed v /(mm·s-1) Argon gasflow Q /(L·min-1) A304 stainless steel 1300 4 25 A304 stainless steel 1300 6 25 A304 stainless steel 1300 8 25 A304 stainless steel 1300 10 25 A304 stainless steel 1300 12 25 Q235 carbon steel 1300 4 25 Q235 carbon steel 1300 6 25 Q235 carbon steel 1300 8 25 Q235 carbon steel 1300 10 25 Q235 carbon steel 1300 12 25 A304 stainless steel 1000 12 25 A304 stainless steel 1100 12 25 A304 stainless steel 1200 12 25 A304 stainless steel 1300 12 25 A304 stainless steel 1400 12 25 Q235 carbon steel 1000 8 25 Q235 carbon steel 1100 8 25 Q235 carbon steel 1200 8 25 Q235 carbon steel 1300 8 25 Q235 carbon steel 1400 8 25

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表 2可变热输入条件下的焊接参数

Table2. Welding parameters for varying heat input processes

Experimentalmaterial LaserpowerP /W Weldingspeed v /(mm·s-1) Argon gasflow Q /(L·min-1) A304 stainless steel 1100→1400→1100 8 25 Q235 carbon steel 1100→1400→1100 6 25

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许赛, 杨立军, 徐书峰, 黄一鸣, 赵圣斌, 李珊珊. 激光深熔焊等离子体电信号振荡特征与焊缝熔深的特征关系[J]. 中国激光, 2020, 47(1): 0102006. Sai Xu, Lijun Yang, Shufeng Xu, Yiming Huang, Shengbin Zhao, Shanshan Li. Relation between Plasma Electrical Signal Oscillation and Weld Depth in Laser Deep Penetration Welding[J]. Chinese Journal of Lasers, 2020, 47(1): 0102006.