Aluminum-magnesium dissimilar alloy resistance spot welding method based on electric arc spraying interlayer

The invention provides an aluminum-magnesium dissimilar alloy resistance spot welding method based on an electric arc spraying interlayer. The aluminum-magnesium dissimilar alloy resistance spot welding method comprises the following steps that S1, an aluminum alloy plate is subjected to pre-welding...

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Bibliographische Detailangaben
Hauptverfasser:	ZANG YUNHAO, REN DONGTING, HE JING, REN XIAOXUE, LIN XU, YANG NI, ZHENG ZIHAO, WANG WENQUAN, ZHANG XINGE
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS SOLDERING OR UNSOLDERING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	The invention provides an aluminum-magnesium dissimilar alloy resistance spot welding method based on an electric arc spraying interlayer. The aluminum-magnesium dissimilar alloy resistance spot welding method comprises the following steps that S1, an aluminum alloy plate is subjected to pre-welding treatment; s2, the magnesium alloy substrate is subjected to pre-welding treatment; s3, spraying a middle layer on the surface of the magnesium alloy substrate by adopting electric arc spraying equipment, wherein the middle layer is formed by stacking a Zn coating, a Ni coating and a Zn coating; and S4, the magnesium alloy base plate and the aluminum alloy plate are welded through a resistance spot welding method. According to the method, the Zn/Ni/Zn middle layer is formed by stacking molten drops, interlayer combination is tight, and stability can be kept in the resistance spot welding pre-pressing stage. The middle layer of the Zn/Ni/Zn three-layer structure is the Ni coating, the melting point of Ni is far lar