基于图像处理与数值仿真辅助的电弧增材成形研究

doi:10.16180/j.cnki.issn1007-7820.2023.01.002

Abstract

Abstract:

To solve the selection problem of welding mode (CMT or CMT + Pulse) and additive strategy (unidirectional or reciprocating path) provided by Fronius CMT TPS3200 welding power supply, under the same linear energy density, based on the high-quality forming of single-track single-layer welding bead with different modes, the variation law of layer width and layer height toward single-track multi-layers is studied, and single-track 10-layers bead forming is evaluated by combining image processing and numerical simulation. It is found that the weld bead forming of CMT+Pulse mode and CMT mode tend to reach stability from the fourth and third layer, respectively. In order to select optimal scanning strategy, the reciprocating path for bead forming is better than the unidirectional path based on the aspect of numerical simulation and evaluation of top weld bead forming. Under the reciprocating path, the weld bead forming of CMT mode is better than CMT+Pulse mode. The results show that the CMT mode preferred to achieve the heat dissipation stability condition, and combined with the optimal reciprocating path, it has advantages in welding bead forming, which lays the foundation for subsequent arc additive materials.

Key words: wire arc additive manufacturing, scanning strategy, welding mode, image processing, numerical simulation, roughness, slope, single-track and multi-layer bead forming

CLC Number:

TG444+.74

LIU Meihong,HONG Enhang,LI Zhenhua,TENG Baoren. Study on Wire Arc Additive Manufacturing Forming Based on Image Processing and Numerical Simulation[J].Electronic Science and Technology, 2023, 36(1): 7-14.

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焊接模式	送丝速度 /m·min^-1	焊接速度 /mm·s^-1	电流 /A	电压 /V	热源功率 /W	线能量密度 /J·m^-1
CMT+Pulse	3.5	15	73	14.3	10.439×10²	7×10⁴
CMT	3.2	8	50	11.2	5.600×10²	7×10⁴

扫描策略	粗糙度/mm	斜率/%
单向	0.48	-4.17
往复	0.19	-0.06

焊接模式	粗糙度/mm	斜率/%
CMT	0.19	-0.06
CMT+Pulse	0.74	-0.12

Study on Wire Arc Additive Manufacturing Forming Based on Image Processing and Numerical Simulation

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