公开(公告)号：US20240051006A1

公开(公告)日：2024-02-15

申请号：US18303136

申请日：2023-04-19

申请人： Sinoma Science & Technology (Chengdu) Co., Ltd.

发明人： Shihong LI ,  Cunjiang FENG ,  Hao YI ,  Qingbo GONG ,  Qinling HE ,  Jiachao HE ,  Yong TANG ,  Na QI

IPC分类号： B21D22/28 ,  B21D51/16

CPC分类号： B21D22/28 ,  B21D51/16

摘要： Disclosed are a stamping method and a deep-drawing die for an aluminum alloy liner of a large-volume hydrogen storage cylinder, which solve that technical problem of low production efficiency of processing the aluminum alloy liner of the large-volume hydrogen storage cylinder by adopting strong spin and thinning of an aluminum tube in the prior art. The stamping method includes heating and stamping an aluminum ingot into a cup-shaped rough blank, then cold deep drawing the cup-shaped rough blank for thinning and lengthening into an aluminium alloy liner, and the deep-drawing die includes terrace die and thinning dies.