SPRINGBACK HASIL PROSES TEKUK BENTUK “V“ PELAT BAJA KARBON St. 60 KETEBALAN 4 mm

Abstract

This paper presents a study of phenomenon springback that occurs in sheet metal bending processes. Springbackis a sensitive feature in sheet metal forming processes due to the influence of the elasticity of the metal material when thebending load is removed. The main objective of this study was to analyze the effect of the punch angle and radius onspringback that occurred in the bending process of carbon steel material St. 60. The punch radius and angle are used asvaried parameters. Whereas the bending step, plate thickness, die angle and die radius are constant parameters. UniversalTesting Machine (UTM) is used as a press machine with a constant step speed. The protractor bevel with 5 minutesaccuracy is used for angle measurement. Graphical methods are used to analyze. The springback phenomenon that wasobserved was based on variations in the increase in radius and angle of the punch. The findings of this study will beuseful for metal forming industries.