Research on micro-electric resistance slip welding of copper electrode during the fabrication of 3D metal micro-mold

•We proposed and adopted the micro-DLOM to process the 3D micro-structure.•Micro-electric resistance slip welding was adopted to achieve the connection of the 3D micro-structure.•ANSYS software was used to simulate the temperature field of the micro-electric resistance slip welding.•Deposition effec...

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Bibliographic Details
Published in:Journal of materials processing technology 2013-12, Vol.213 (12), p.2174-2183
Main Authors: Xu, Bin, Wu, Xiao-yu, Lei, Jian-guo, Luo, Feng, Gong, Feng, Du, Chen-lin, Sun, Xiu-quan, Ruan, Shuang-chen
Format: Article
Language:English
Subjects:
3D metal micro structure
Copper
Copper electrode
Electrodes
FABRICATION
LAMINATES
MECHANICAL PROPERTIES
Micro-DLOM
Micro-electric resistance slip welding
Molds
PARAMETERS
Process parameters
Slip
Three dimensional
Two dimensional
WELDING
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Summary:•We proposed and adopted the micro-DLOM to process the 3D micro-structure.•Micro-electric resistance slip welding was adopted to achieve the connection of the 3D micro-structure.•ANSYS software was used to simulate the temperature field of the micro-electric resistance slip welding.•Deposition effect of the copper bar electrode produced during slip welding was studied. 3D micro-mold fabricated by the micro double-staged laminated object manufacturing process (micro-DLOM) is formed via stacking and fitting of multi-layer 2D micro-structures. The connection of 2D micro-structures is related to forming accuracy and mechanical properties of 3D micro-mold. In this research, micro-electric resistance slip welding of copper electrodes was proposed to connect multi-layer 2D micro-structures. Firstly, the proper process parameters of slip welding were obtained through the welding experiment, and the temperature field of micro-electric resistance slip welding under such process parameters was simulated. Secondly, deposition effect of the copper bar electrode produced during slip welding was studied and the study results show that the copper element deposited in the slip welding area decreases as the surface roughness of copper electrode decreases. Finally, based on the above research, a square micro-cavity mold with micro-channel, a circular micro-cavity mold with cross keyway and micro gear cavity mold with two-stage steps were welded by the micro-electric resistance slip welding.
ISSN:0924-0136
DOI:10.1016/j.jmatprotec.2013.06.009