Spinning Cylindrical EV Battery Canisters
新能源圆柱电芯壳旋压
标签：新能源, 电池壳, 电芯, 旋压, 薄壁, 量产
大圆柱电芯（如 Ø46 系列钢壳开发阶段）常用旋压做快速试制，紫铜与铝合金壳则用于散热结构件。要点：壁厚 0.5–0.8 mm 时采用冷旋分 4–6 道次，滚轮圆角半径 R3–R5，末道次留 0.05–0.1 mm 精整量；口部翻边前先退火 450–500 °C 消除加工硬化，防止卷边开裂。旋压制样比深冲模具开发节省 80% 以上前期成本。
Large cylindrical cell housings (Ø46-series development) are commonly prototyped by spinning; copper and aluminum cans also serve as thermal structural parts. With 0.5–0.8 mm walls, cold-spin in 4–6 passes using R3–R5 roller radii and leave 0.05–0.1 mm for a final planishing pass. Anneal at 450–500 °C before rim curling to avoid cracking. Spinning cuts prototyping cost by 80%+ versus deep-draw tooling. ---