Patent · US Active

Forward and backward extrusion composite forming method using mould having open inner cavity

US11059084B2 · kind B2 · utility

0Cited by

7References

2Claims

0Family size

Assignee

No.59 Research Institute of China Ordnance Industry · CN

Inventors

Qiang Chen · Sollentuna, SE
Shuhai Huang · Boiceville, US
Jun Lin · Chongqing, CN
Chuankai Hu · Chongqing, CN
Xiangsheng Xia · Chongqing, CN
Zude Zhao · Chongqing, CN
Yang-Cheng Wu · Hsinchu, TW

Key dates

Filing date	Feb 13, 2019
Grant date	Jul 13, 2021
Priority date	—
Expiry date	Aug 29, 2039

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB21C23/21
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

The present invention discloses a forward and backward extrusion composite forming method using a mould having an open inner cavity, including the following steps: (1) the structural design and assembly of the forward and backward extrusion composite mould having the open inner cavity; (2) the preparation of the initial billet; and (3) forward and backward extrusion composite forming. The present invention can greatly improve the length-diameter ratio of the blind hole and is widely used in alloy steel, aluminum alloy, magnesium alloy, copper alloy and other components.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.