Title:
TECHNICAL METHOD FOR PRINTING SIMILAR STRUCTURE OF COMBUSTION CHAMBER LINER BY USING GRCOP-84 SPHERICAL POWDER
Document Type and Number:
WIPO Patent Application WO/2021/004431
Kind Code:
A1
Abstract:
The present invention relates to the field of metal additive manufacturing, and disclosed thereby is a method for printing a structure of a combustion chamber liner by using GRCop-84 spherical powder. The method mainly comprises the following steps: (1) establishing a model; (2) configuring printing parameters; (3) performing laser printing; (4) performing annealing treatment; and (5) performing surface sandblasting. The present invention uses GRCop-84 spherical powder as the material of a combustion chamber liner model, and said material has excellent electrical conductivity, thermal expansion, strength, creep resistance, ductility, fatigue and like properties, and the comprehensive performance thereof is excellent, which significantly improves the performance of a rocket engine. In the GRCop-84 spherical powder material of the present invention, Cr and Nb form a Cr2Nb phase, and the volume fraction of a second phase is about 14%, same being evenly distributed in a copper matrix. Moreover, the second phase is still stable when 1600°C is exceeded, which enables the material to maintain good service performance at high temperatures.
Inventors:
LI XIAOYANG (CN)
YU GAOFENG (CN)
ZHANG HANG (CN)
WU XUHONG (CN)
WANG WENBIN (CN)
MA MINGYUE (CN)
JING LIN (CN)
YU GAOFENG (CN)
ZHANG HANG (CN)
WU XUHONG (CN)
WANG WENBIN (CN)
MA MINGYUE (CN)
JING LIN (CN)
Application Number:
PCT/CN2020/100453
Publication Date:
January 14, 2021
Filing Date:
July 06, 2020
Export Citation:
Assignee:
SHAANXI SIRUI ADVANCED MAT CO LTD (CN)
International Classes:
B22F3/105; B22F1/14; B22F3/24; B33Y10/00; B33Y70/00; C22C27/02
Foreign References:
| CN110421165A | 2019-11-08 | |||
| CN109794602A | 2019-05-24 | |||
| CN107470623A | 2017-12-15 | |||
| CN105386036A | 2016-03-09 | |||
| CN105397086A | 2016-03-16 | |||
| CN104028758A | 2014-09-10 | |||
| CN105880594A | 2016-08-24 | |||
| CN104923789A | 2015-09-23 | |||
| CN104525944A | 2015-04-22 | |||
| EP1659195B1 | 2012-06-06 |
Attorney, Agent or Firm:
SHANGHAI BESHINING LAW OFFICE (CN)
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