Patents Assigned to No.59 Research Institute of China Ordnance Industry
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Patent number: 11525652Abstract: 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.Type: GrantFiled: December 5, 2018Date of Patent: December 13, 2022Assignee: No.59 Research Institute of China Ordnance IndustryInventors: Qiang Chen, Dayu Shu, Qiang Zhao, Feng Kang, Shuhai Huang, Wei Zhang, Zude Zhao, Xiangsheng Xia
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Patent number: 11519062Abstract: A gradient control method for a microstructure ultrafine crystallization of a deep cone copper shaped charge liner includes the steps of an extrusion forming, a recrystallization heat treatment, and a high-frequency percussion. A multi-pass extrusion is used in the extrusion forming, and in the high-frequency percussion step, a percussion speed is 30,000 to 40,000 times/min, a percussion force is 1600 N to 2000 N, and a number of percussion times is 1 to 3. The forming and surface quality control of the deep cone shaped charge liner are realized by the control technology of the present invention; the plasticity of the material is improved, and fine crystal structures are obtained; and an ultrafine grain gradient structure distributed along the thickness direction is formed in the inner surface of the shaped charge liner.Type: GrantFiled: March 5, 2019Date of Patent: December 6, 2022Assignee: No.59 Research Institute of China Ordnance IndustryInventors: Qiang Chen, Dayu Shu, Qiang Zhao, Zude Zhao, Luchang Che, Yang Wu, Chuankai Hu, Hui Li
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Patent number: 11059084Abstract: 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.Type: GrantFiled: February 13, 2019Date of Patent: July 13, 2021Assignee: NO.59 RESEARCH INSTITUTE OF CHINA ORDNANCE INDUSTRYInventors: Qiang Chen, Shuhai Huang, Jun Lin, Chuankai Hu, Xiangsheng Xia, Zude Zhao, Yang Wu
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Patent number: 10888921Abstract: A multi-position parallel pressurized casting device for large aluminum alloy castings and method thereof are provided. The device includes a platform, a top surface of the platform is a working surface, and a bottom of the platform is provided with a holding furnace. A number of the holding furnace is two or more, and each holding furnace is connected to a liquid filling port corresponding to the working surface by a separate lift device, and the holding furnaces can achieve independent liquid level pressure control or synchronization liquid level pressure control in any combination by a lift control system; and a cover body is also provided on the working surface, the cover body and the working surface form a sealed working chamber. A vacuum-pumping system and an inert gas replacement system for the working chamber and/or the holding furnace are further provided.Type: GrantFiled: July 9, 2019Date of Patent: January 12, 2021Assignee: NO.59 RESEARCH INSTITUTE OF CHINA ORDNANCE INDUSTRYInventors: Qiang Chen, Zhiwei Huang, Zude Zhao, Gaozhan Zhao, Jianquan Tao, Yuanyuan Wan, Ming Li, Zhihui Xing
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Publication number: 20200038947Abstract: A multi-position parallel pressurized casting device for large aluminum alloy castings and method thereof are provided. The device includes a platform, a top surface of the platform is a working surface, and a bottom of the platform is provided with a holding furnace. A number of the holding furnace is two or more, and each holding furnace is connected to a liquid filling port corresponding to the working surface by a separate lift device, and the holding furnaces can achieve independent liquid level pressure control or synchronization liquid level pressure control in any combination by a lift control system; and a cover body is also provided on the working surface, the cover body and the working surface form a sealed working chamber. A vacuum-pumping system and an inert gas replacement system for the working chamber and/or the holding furnace are further provided.Type: ApplicationFiled: July 9, 2019Publication date: February 6, 2020Applicant: No.59 Research Institute of China Ordnance IndustryInventors: Qiang CHEN, Zhiwei HUANG, Zude ZHAO, Gaozhan ZHAO, Jianquan TAO, Yuanyuan WAN, Ming LI, Zhihui XING
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Publication number: 20200009628Abstract: 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.Type: ApplicationFiled: February 13, 2019Publication date: January 9, 2020Applicant: No.59 Research Institute of China Ordnance IndustryInventors: Qiang CHEN, Shuhai HUANG, Jun LIN, Chuankai HU, Xiangsheng XIA, Zude ZHAO, Yang WU
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Publication number: 20190316242Abstract: A gradient control method for a microstructure ultrafine crystallization of a deep cone copper shaped charge liner includes the steps of an extrusion forming, a recrystallization heat treatment, and a high-frequency percussion. A multi-pass extrusion is used in the extrusion forming, and in the high-frequency percussion step, a percussion speed is 30,000 to 40,000 times/min, a percussion force is 1600 N to 2000 N, and a number of percussion times is 1 to 3. The forming and surface quality control of the deep cone shaped charge liner are realized by the control technology of the present invention; the plasticity of the material is improved, and fine crystal structures are obtained; and an ultrafine grain gradient structure distributed along the thickness direction is formed in the inner surface of the shaped charge liner.Type: ApplicationFiled: March 5, 2019Publication date: October 17, 2019Applicant: No.59 Research Institute of China Ordnance IndustryInventors: Qiang CHEN, Dayu SHU, Qiang ZHAO, Zude ZHAO, Luchang CHE, Yang WU, Chuankai HU, Hui LI
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Publication number: 20190170486Abstract: 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.Type: ApplicationFiled: December 5, 2018Publication date: June 6, 2019Applicant: No.59 Research Institute of China Ordnance IndustryInventors: Qiang CHEN, Dayu SHU, Qiang ZHAO, Feng KANG, Shuhai HUANG, Wei ZHANG, Zude ZHAO, Xiangsheng XIA