Distribution Gradient Control of Laser Melt Injection Reinforcement Particles by Electromagnetic Compound Field

Liang, 王梁 Wang; Yong, 胡勇 Hu; Yinghua, 林英华 Lin; Juehui, 李珏辉 Li; Jianhua, 姚建华 Yao

doi:10.3788/cjl201845.1002001

Cited by 1 publication

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“…Hu et al established a multi-physics mathematical model of steady magnetic-field-assisted laser melting and solidification to simulate the velocity and temperature fields of the melt pool under a steady magnetic field [22]. Furthermore, Wang et al established a mathematical model of the regulation of the electromagnetic complex field on the gradient of the particle distribution enhanced by laser melting and injection and analyzed the influence of the electromagnetic complex field parameters on the flow field, temperature field, and particle distribution inside the melt pool [23]. To improve the rough surface of SKD61 die steel, and reduce the secondary overflow of the molten pool, Zhou et al adopted a steady magnetic-field-assisted laserpolishing method to study the effect of a steady magnetic field on surface morphology and melt pool flow behavior [24].…”

Section: Introductionmentioning

confidence: 99%

A Study on the Dynamic Evolution Mechanism of the Steady Magnetic Field on the Internal Flow Behavior of a Laser Melting Pool

Xie

Wang

et al. 2023

Metals

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A 2D model of laser melting consisting of heat transfer, hydrodynamic flow, surface tension, and a free surface motion was established. A physical field simulation of the laser melting process was performed, and the effect of steady magnetic field parameters on the internal flow and temperature fields of the melt pool was analyzed and validated by experiments. The results show that the steady magnetic field can suppress the melt pool flow rate, but slightly influences its temperature field, and with an increase in the magnetic field strength, the ripples on the melting surface decrease with increasing magnetic flux density. Compared with the molten pool depth experiment results, the simulation molten pool depth was 792 μm, representing a difference in value of 13.5%. The surface ripples of the molten pool fluctuated greatly in the absence of a magnetic field, while the surface ripples were suppressed when the magnetic flux density was 2T. This is consistent with the simulation results, thus effectively demonstrating the simulation model’s accuracy.

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Section: Introductionmentioning

confidence: 99%