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Patent Searching and Data


Title:
PREPARATION METHOD FOR METAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2022/121439
Kind Code:
A1
Abstract:
A preparation method for a metal material, comprising: horizontally placing a metal material (400) to be prepared between wave surfaces of a female die (200) and a male die (300); a pressing machine being connected to the male die (300), and the metal material being pressed by the male die (300) such that the metal material is in full contact with the male die (300) and the female die (200); ejecting and horizontally flipping a pressed metal material (401), and then placing same between the wave surfaces of the female die and the male die; repeating the pressing and flipping process until strain accumulation of the metal material meets requirements; and flattening a deformed metal material (403) by means of flat dies (500a, 500b) and then taking out same (403). The preparation method for the metal material can prepare large-size nano materials; the structure refinement capability is stronger, deformation is more uniform, and the processing process is simpler; no macro texture defects occur, and an isotropic nano material having uniform grain size distribution can be obtained.

Inventors:
CHEN FEI (CN)
WU GUANGSHAN (CN)
CUI ZHENSHAN (CN)
ZHANG JIAO (CN)
Application Number:
PCT/CN2021/119780
Publication Date:
June 16, 2022
Filing Date:
September 23, 2021
Export Citation:
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Assignee:
UNIV SHANGHAI JIAOTONG (CN)
International Classes:
B21C25/02; B21C23/00
Foreign References:
CN112588855A2021-04-02
CN106424261A2017-02-22
CN107716668A2018-02-23
JP2001239319A2001-09-04
CN105855345A2016-08-17
CN109059653A2018-12-21
Attorney, Agent or Firm:
SHANGHAI BRIDGE INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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