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1.
公开(公告)号:US11059084B2
公开(公告)日:2021-07-13
申请号:US16274264
申请日:2019-02-13
发明人: Qiang Chen , Shuhai Huang , Jun Lin , Chuankai Hu , Xiangsheng Xia , Zude Zhao , Yang Wu
摘要: The present invention discloses a forward and backward extrusion composite forming method using a mould having an open inner cavity, including the following steps: (1) the structural design and assembly of the forward and backward extrusion composite mould having the open inner cavity; (2) the preparation of the initial billet; and (3) forward and backward extrusion composite forming. The present invention can greatly improve the length-diameter ratio of the blind hole and is widely used in alloy steel, aluminum alloy, magnesium alloy, copper alloy and other components.
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公开(公告)号:US11525652B2
公开(公告)日:2022-12-13
申请号:US16209999
申请日:2018-12-05
发明人: Qiang Chen , Dayu Shu , Qiang Zhao , Feng Kang , Shuhai Huang , Wei Zhang , Zude Zhao , Xiangsheng Xia
IPC分类号: F42B1/036 , B21C23/00 , B21C23/14 , F42B1/028 , F42B1/032 , B21K21/06 , C21D9/00 , C22F1/00 , C22F1/08 , F42B33/02
摘要: A preparation method of a uniform low stress cone shaped charge liner includes the steps of multi-pass extrusion forming, vibration aging treatment, and cryogenic treatment. The step of multi-pass extrusion forming refers to 4 to 8 passes of extrusion deformation under the actions of a three-dimensional compressive stress and a deformation rate of 5 to 10 mm/s, having a deformation amount of 5 to 50% for each pass. The shaped charge liner prepared by the present invention has high dimensional accuracy, good geometric symmetry, low stress value, and excellent stability in the precise machining process and in use, which may significantly improve the penetration capability and stability of the shaped charge liner of high-explosive anti-tank warheads.
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