The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 22, 2019
Filed:
Apr. 23, 2019
Dalian University of Technology, Dalian, CN;
Shijian Yuan, Dalian, CN;
Xiaobo Fan, Dalian, CN;
Dalian University of Technology, Dalian, CN;
Abstract
The present invention discloses a gas pressure forming method of an ellipsoid. The formability of a closed polyhedral shell including polar plates, ellipsoidal side flap plates, and welded joints is improved, and the closed polyhedral shell is pressurized into an ellipsoid by using compressed gas under a heating condition, specifically comprising: assembling and welding two polar plates and ellipsoidal side flap plates into a closed polyhedral shell; disposing an electrode on the closed polyhedral shell, energizing and heating to a preset temperature, and then inflating compressed gas into the shell; deforming the closed polyhedral shell under the action of internal gas pressure, stopping inflating gas until a desired curvature shell is obtained, discharging gas, and removing the electrode to obtain a formed ellipsoid.