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See Chinese contents: GB/T 22565.1-2021 GB/T 22565.1-2021: Metallic materials -- Sheet and strip -- Method for spring back evaluation -- Part 1: Stretch bending
This document specifies a method for evaluating the amount of springback of sheets and strips of metallic materials under plane-strain stretch bending. Plane-strain stretch bending is a typical deformation mode of stamping parts, which can show a significant amount of springback. By using this method, the amount of springback under stretch bending can be evaluated accurately and quantitatively.
