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.

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.

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.

公开(公告)号：US11207732B2

公开(公告)日：2021-12-28

申请号：US16938648

申请日：2020-07-24

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhubin He ,  Jiangkai Liang ,  Yi Xu ,  Wei Du ,  Yanli Lin ,  Kailun Zheng ,  Peng Lin ,  Gang Liu ,  Shijian Yuan

IPC: B22F7/04 ,  B22F3/10

Abstract: An integrated method for manufacturing a high-temperature resistant thin-walled component by preforming by laying a metal foil strip. The integrated manufacturing method includes: designing a preform, preparing a support die, determining a thickness of a foil strip, determining a width of the foil strip, developing a laying process, laying an A foil strip and a B foil strip, obtaining an AB laminated preform, bulging the preform, performing a reactive synthesis and a densification process of a bulged component, and performing a subsequent treatment of the thin-walled component. Various embodiments obtain an integral thin-walled preform with a complex structure, a uniform wall thickness and a shape close to the final part by continuously laying a metal foil strip with an appropriate width.

公开(公告)号：US20210213528A1

公开(公告)日：2021-07-15

申请号：US16938648

申请日：2020-07-24

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Zhubin He ,  Jiangkai Liang ,  Yi Xu ,  Wei Du ,  Yanli Lin ,  Kailun Zheng ,  Peng Lin ,  Gang Liu ,  Shijian Yuan

IPC: B22F7/04 ,  B22F3/10

Abstract: The present invention discloses an integrated method for manufacturing a high-temperature resistant thin-walled component by preforming by laying a metal foil strip. The integrated manufacturing method includes: designing a preform, preparing a support die, determining a thickness of a foil strip, determining a width of the foil strip, developing a laying process, laying an A foil strip and a B foil strip, obtaining an AB laminated preform, bulging the preform, performing a reactive synthesis and a densification process of a bulged component, and performing a subsequent treatment of the thin-walled component. The present invention obtains an integral thin-walled preform with a complex structure, a uniform wall thickness and a shape close to the final part by continuously laying a metal foil strip with an appropriate width. The present invention does not need to weld the thin-walled preform, and thus solves the problem of weak comprehensive performance of a weld zone in the conventional method of preparing, rolling and welding a laminated sheet into a cylinder. In addition, the present invention reduces a subsequent bulging deformation, avoiding local bulging, thinning and cracking, undercuts at the parting during die closing, and wrinkles due to uneven distribution of materials in each zone.

公开(公告)号：US20210197261A1

公开(公告)日：2021-07-01

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: B22F3/105 ,  B21D26/049 ,  B21D26/041

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.