Title:
METHOD FOR PROMOTING DENSIFICATION OF METAL BODY BY UTILIZING METAL HYDROGEN ABSORPTION EXPANSION
Document Type and Number:
WIPO Patent Application WO/2019/205830
Kind Code:
A1
Abstract:
A method for promoting densification of a metal body by utilizing metal hydrogen absorption expansion. The hydrogen absorption expansion refers to a volume expansion effect produced by absorbing hydrogen on some metal blocks or metal powder in a hydrogen atmosphere under certain temperature conditions. Hydrogen is introduced into a rigid closed mold filled with a hydrogen absorption expansion material or filled with the hydrogen absorption expansion material and a material to be densified, and the mold and/or the material to be densified are densified by using the volume expansion effect of the hydrogen absorption expansion material. The present method may be used for eliminating residual pores from a metal material so as to improve the properties of the material.
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Inventors:
ZHOU CHENGSHANG (CN)
LIU YONG (CN)
SUN PEI (CN)
LIU BIN (CN)
LIU YONG (CN)
SUN PEI (CN)
LIU BIN (CN)
Application Number:
PCT/CN2019/078357
Publication Date:
October 31, 2019
Filing Date:
March 15, 2019
Export Citation:
Assignee:
UNIV CENTRAL SOUTH (CN)
International Classes:
B22F7/00
Foreign References:
| CN103624995A | 2014-03-12 | |||
| CN1404948A | 2003-03-26 | |||
| CN104511595A | 2015-04-15 | |||
| CN102044680A | 2011-05-04 | |||
| DE102015212192A1 | 2016-01-14 |
Attorney, Agent or Firm:
CHANGSHA RONG ZHI PATENT AGENCY et al. (CN)
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