公开(公告)号：US20230066289A1

公开(公告)日：2023-03-02

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 ,  B21B37/24 ,  B23K26/082 ,  B21B47/00 ,  B23K26/70 ,  B33Y10/00 ,  B33Y50/02 ,  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.