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.

公开(公告)号：US10576524B1

公开(公告)日：2020-03-03

申请号：US16537382

申请日：2019-08-09

Applicant: Dalian University of Technology ,  Harbin Institute of Technology

Inventor： Shijian Yuan ,  Zhubin He ,  Xiaobo Fan ,  Yanli Lin ,  Guofeng Wang ,  Chang Qi

IPC: B21D37/16 ,  B21D37/02 ,  B21D22/02 ,  B21D37/08 ,  C21D1/673

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.

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.