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公开(公告)号：US10576524B1
公开(公告)日：2020-03-03
申请号：US16537382
申请日：2019-08-09
Inventor： Shijian Yuan , Zhubin He , Xiaobo Fan , Yanli Lin , Guofeng Wang , Chang Qi
Abstract: The present invention provides a die capable of achieving rapid forming and quenching therein. The die includes an upper die, a blank holder and a lower die, where the upper die is composed of an internal solid die core and a thin-walled skin. Grooves in communication with each other are disposed between the internal solid die core and the thin-walled skin. In a forming stage, the grooves are not filled or filled with a heat insulating material such as a gas; and in a quenching stage, a low-temperature medium is introduced into the grooves. The die can be used to achieve rapid forming and quenching of metal materials of different types and thicknesses.
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公开(公告)号：US20190060970A1
公开(公告)日：2019-02-28
申请号：US15982042
申请日：2018-05-17
Applicant: Harbin Institute of Technology
Inventor： Shijian YUAN , Zhubin He , Xiaobo Fan , Mingqu Ding , Guofeng Han
IPC: B21D26/027 , B21D26/025 , B21D26/055 , B21D37/16
Abstract: Provided is a method for quick forming of a hot metal sheet. The method relates to a technology for forming a metal sheet part, and solves the problem that the existing hot metal sheet forming technology cannot ensure that a blank is deformed under reasonable temperature and pressure conditions, thereby failing to realize precise and quick forming of a complex metal sheet part, especially a thin-walled part. The method mainly includes the following steps: step one, placing a metal sheet blank to be formed on a forming mold; step two, introducing high-pressure gases with equal pressures simultaneously into upper and lower enclosed cavities respectively formed by the metal sheet blank and the sealing mold, and the metal sheet blank and the forming mold; step three, heating the metal sheet blank to a preset forming temperature condition; step four, quickly releasing the high-pressure gas from the cavity formed by the metal sheet blank and the forming mold, such that the metal sheet blank bulges; and step five, discharging the gas from the cavity formed by the metal sheet blank and the sealing mold, and opening the mold to obtain a formed metal sheet part. The present invention is used for manufacturing a metal sheet part.
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公开(公告)号：US10589504B2
公开(公告)日：2020-03-17
申请号：US16094626
申请日：2016-12-27
Applicant: Harbin Institute of Technology
Inventor： Zhubin He , Kun Zhang , Haihui Zhu , Shijian Yuan
IPC: B32B3/00 , B32B15/00 , B32B37/00 , B32B38/00 , B32B37/12 , B32B38/18 , B32B3/26 , B32B15/01 , B23P15/00
Abstract: A lamination manufacturing method for large-sized metal components with complicated structures is provided, relating to a part manufacturing method to solve the problem that traditional machining, entire plastic forming and the existing additive manufacturing method are difficult to manufacture large-sized metal components with complicated special-shape structure and high-performance requirement. The manufacturing method includes the steps: step 1. obtaining a three-dimensional digital model of a large-sized metal component with complicated structure, and dividing the model into a plurality of slice layers; step 2. selecting the actually available metal sheet corresponding to the thickness of each slice layer divided in step 1, and machining each metal sheet to obtain a shaped sheet consistent with the model of each slice layer in step 1; step 3. stacking the shaped sheets obtained through machining of step 2 according to the order of the corresponding slice layers in step 1; and step 4. obtaining a required large-sized metal component with complicated structure after all the shaped sheets are connected into a whole. The present invention is used for shaping large-sized components with complicated deep cavity and inner hole structures.
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公开(公告)号：US10710139B2
公开(公告)日：2020-07-14
申请号：US16541583
申请日：2019-08-15
Applicant: HARBIN INSTITUTE OF TECHNOLOGY
Inventor： Shijian Yuan , Zhubin He , Xiaobo Fan , Mingqu Ding , Guofeng Han
IPC: B21D26/027 , B21D26/025 , B21D26/055 , B21D37/16 , B21D53/04 , B21D26/029
Abstract: A method for quick forming of a metal sheet. In an embodiment, the method includes the following steps: placing a metal sheet blank to be formed on a forming mold; introducing high-pressure gases with equal pressures simultaneously into upper and lower enclosed cavities respectively formed by the metal sheet blank and the sealing mold, and the metal sheet blank and the forming mold; heating the metal sheet blank to a preset forming temperature condition; quickly releasing the high-pressure gas from the cavity formed by the metal sheet blank and the forming mold, such that the metal sheet blank bulges; and discharging the gas from the cavity formed by the metal sheet blank and the sealing mold, and opening the mold to obtain a formed metal sheet part.
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5.发明授权公开(公告)号：US11897219B2
公开(公告)日：2024-02-13
申请号：US17685712
申请日：2022-03-03
Applicant: Dalian University of Technology
Inventor： Zhubin He , Haihui Zhu
Abstract: An impact forming device and method for local small features on a metal thin-walled curved-surface part. The impact forming device includes impact forming dies, impact loading units and a forming supporting die, wherein the impact forming die is provided with an impact forming part, and the impact forming part is a convex part corresponding to a local small feature; the forming supporting die can support and fix a metal thin-walled curved-surface part without forming local small features, and the forming supporting die is provided with concave parts matched with the impact forming parts; and the impact loading unit includes a guide rail, an explosive ball and a detonating block, under the impact loading of the impact loading units, the impact forming parts can impact the metal thin-walled curved-surface part without forming local small features under the matching action of the concave parts to form the local small features.
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Patent Agency Ranking
公开(公告)号：US11459648B2
公开(公告)日：2022-10-04
申请号：US17189229
申请日：2021-03-01
Applicant: Dalian University of Technology
Inventor： Xiaobo Fan , Shijian Yuan , Zhubin He
Abstract: Provided is a performance controlling method for a high-strength aluminum alloy shell during an ultra-low temperature forming process. The present disclosure greatly improves the performance of an aluminum alloy sheet by applying an ultra-low temperature. The present disclosure cools the aluminum alloy sheet to an ultra-low temperature by using an ultra-low temperature cooling medium, so as to compensate for insufficient hardening caused by insufficient deformation and avoid cracking caused by increased deformation. The present disclosure cools the sheet blank zonally according to a deformation law of a desired curved part, and controls the ultra-low temperature distribution of the sheet blank during forming so as to promote the formation of a substructure in a small-deformation zone. In this way, the present disclosure improves a subsequent age-hardening effect, and corresponding uniformity of microstructure and performance, and effectively solves the problem of non-uniformity due to uneven deformation.
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公开(公告)号：US11413672B2
公开(公告)日：2022-08-16
申请号：US17056878
申请日：2019-11-20
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Shijian Yuan , Kailun Zheng , Zhubin He
Abstract: The present disclosure discloses an apparatus and a method for forming a large-scale thin-walled ring shell by hot-press bending with internal gas pressure. The method comprises: welding a first head and a second head to the pipe; arranging a first electrode and a second electrode at the two ends of the pipe; charging compressed gas to the heated sealed pipe assembly; placing the sealed pipe assembly between the convex part of the first die and the concave part of the second die, controlling the temperatures of the first and second dies to perform press bending; increasing the gas pressure in the bent sealed pipe assembly, to attach the bent sealed pipe assembly to the die cavity profile; discharging the compressed gas, cutting the first head, second head and extra material to obtain a formed ring shell segment; welding formed ring shell segments to obtain a large-scale thin-walled ring shell.
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公开(公告)号：US11292057B2
公开(公告)日：2022-04-05
申请号：US16863199
申请日：2020-04-30
Applicant: Dalian University of Technology
Inventor： Zhubin He , Yi Xu , Jiangkai Liang , Wei Du , Peng Lin
IPC: B22F10/00 , B21D26/041 , B21D26/049 , B33Y10/00 , B22F10/10
Abstract: The present invention discloses a method for manufacturing a thin-walled metal component by three-dimensional (3D) printing and hot gas bulging. The present invention uses 3D printing to obtain a complex thin-walled preform, which reduces a deformation during subsequent hot gas bulging. The present invention avoids local bulging thinning and cracking, undercuts at the parting during die closing, and wrinkles due to the uneven distribution of cross-sectional materials, etc. The present invention obtains a high accuracy in the form and dimension through hot gas bulging. After a desired shape is obtained by hot gas bulging, a die is closed to keep the component under high temperature and high pressure for a period of time, so that a grain and a phase of the material are transformed to form a desired microstructure.
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公开(公告)号：US11813695B2
公开(公告)日：2023-11-14
申请号：US16705416
申请日：2019-12-06
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Zhubin He , Shijian Yuan , Kailun Zheng , Wei Du , Jianshu Liu
IPC: B23K26/24 , B23K20/12 , B23K37/00 , B23K101/18
CPC classification number: B23K26/24 , B23K20/122 , B23K37/003 , B23K2101/185
Abstract: A method for forming a large-diameter special-shaped cross section thin-wall tubular part. A tailor welded barrel blank is adopted as an original blank for forming of the large-diameter special-shaped cross section thin-wall tubular part. After a desired shape is formed, the original weld joint is removed and butt joint tailor welding is performed on the tubular part again. Since the tailor weld joint of the original barrel blank is removed from the final part, there is no need to consider the consistency or coordination of the microstructure of the weld joint and the base metal during the forming process and the subsequent thermal treatment process.
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10.发明授权公开(公告)号：US11612960B2
公开(公告)日：2023-03-28
申请号：US17864176
申请日：2022-07-13
Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
Inventor： Zhubin He , Jiangkai Liang , Wei Du , Xinyu Hu , Yi Xu
IPC: B23K26/342 , B23K26/082 , B23K26/70 , B21B47/00 , B21B37/24 , B33Y50/02 , B33Y10/00 , B33Y40/20
Abstract: Laser additive manufacturing and a method for preparing thin-walled preforms by laser metal deposition and follow-up rolling. This can solve the problems that when the existing laser metal deposition technology prepares the thin-walled preforms, the limit width size of a molten pool at high power affects the forming wall thickness of the preforms so that it is difficult to prepare preforms with wall thickness less than 2 mm, and the problems of poor surface quality and low accuracy of preforms due to convex and concave peaks caused by the interlayer overlapping, but also can solve the problems that a laser beam with a preset trajectory cannot act on the end surfaces of the preforms due to preform deformation caused by residual stress in a printing process so that the preforms cannot be continuously formed.
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