Transactions of Materials and Heat Treatment

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ClassificationCode：TH181；TH186；TG386

year,vol(issue):pagenumber：2024,49(2):98-106

Abstract：

In order to solve the cracking and necking problems of automobile aluminum sheet parts during the mass production process in summer and improve the forming stability of automotive aluminum sheets, the influence of seasonal temperature on the drawing formability of aluminum sheets was studied, and by comparing and analyzing the mechanical properties of aluminum sheets in winter and summer and the influence of the viscosity of original lubricating oil on the surface of automative aluminum sheets with the change of seasonal temperature on the formability of aluminum sheets in winter and summer, the optimal parameters for the amount of original lubricating oil applied on the surface of aluminum sheets in winter and summer were determined. The results show that the viscosity of original lubricating oil on the surface of aluminum sheets in summer is significantly lower than that in winter, and the amount of residual oil for the original oil film on the surface of the sheet after cleaning by the cleaning machine is less than that in winter. The viscosity of mixed oil film composed of stamping cleaning oil decreases, resulting in an increase in the friction factor between aluminum sheet and die surface during the drawing process and the poor formability of aluminum sheet in summer. Thus, increasing the amount of original lubricating oil on the surface of aluminum sheets in summer can significantly reduce the friction factor on the surface of sheets, effectively improve the formability of aluminum sheets in summer and eliminate the cracking and necking problems.

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毛相震（1987-），男，硕士，工程师

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