ADDITIVE MANUFACTURING METHOD FOR LEAD-FREE ENVIRONMENTALLY-FRIENDLY HIGH-STRENGTH BRASS ALLOY

WIPO Patent Application WO/2019/029031

A1

An additive manufacturing method for a lead-free environmentally-friendly high-strength brass alloy, the method mainly comprising the five steps of gas atomization milling, model construction, molding chamber preparation, pre-powdering, and selective laser molding, and the lead-free environmentally-friendly high-strength brass alloy being prepared according the following mass percentages: Zn 5.5-40wt.% and Si 0.5-4wt.%, the total content of the trace elements Al and Ti being 0-0.5wt.%, while the remaining is Cu; the microstructure thereof comprises micron-sized cellular crystals and dendritic crystals. By means of the foregoing method, a nearly full-density high-strength brass alloy and a near net formed complex structural component thereof may be obtained; the formed high-strength brass alloy has a beautiful color and has the physical properties of having excellent electrical conductivity, thermal conductivity, corrosion resistance, being easy-cut, and the like, and may be widely applied in bathroom fixtures, hardware decoration, radiators, electronic communication, low-temperature piping, pressure equipment and like mechanical manufacturing fields.

YANG CHAO (CN)
ZHAO YANJIE (CN)
LI YUANYUAN (CN)

PCT/CN2017/110097

February 14, 2019

November 09, 2017

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UNIV SOUTH CHINA TECH (CN)

B22F3/105; B22F1/00; B22F1/065; B22F9/08; B33Y10/00; C22C9/04

CN105880594A	2016-08-24
CN106435270A	2017-02-22
CN105478766A	2016-04-13
CN106862561A	2017-06-20
CN104117672A	2014-10-29
EP2998059A1	2016-03-23

GUANGZHOU HUAXUE INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)

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