Title:
SILICON-ALUMINUM ALLOY AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/169073
Kind Code:
A1
Abstract:
Disclosed are a silicon-aluminum alloy and a preparation method therefor. In the silicon-aluminum alloy, the weight percentage of silicon is 55-90%, with the balance being aluminum. The method comprises: adding aluminum metal or aluminum liquid to a vessel, wherein the temperature of the aluminum liquid is 700-800°C; adding a semi-metal silicon raw material to the molten aluminum liquid, covering same with a furnace lid, evacuating same to a vacuum, introducing argon, such that the inside of a magnetic induction electric furnace is in a positive pressure state, and stirring same with a graphite stirring head; energizing and heating same, such that the aluminum metal or aluminum liquid is heated to 1000°C or more and becomes molten, and maintaining the temperature between 1000°C and 1500°C; and after alloying is completed, cooling same to 1000°C or less, opening the furnace lid, pouring a silicon-aluminum alloy into a corresponding mold, and then cooling and molding same. Compared with the prior art, most silicon in the silicon-aluminum alloy prepared by the method is sufficiently and completely alloyed with aluminum, thereby achieving sufficient alloying of silicon and aluminum in the silicon-aluminum alloy in advance and overcoming the phenomenon of generating a hypoeutectic silicon phase that may be produced during the production of the silicon-aluminum alloy.
Inventors:
CHEN XUEMIN (CN)
DUCKWORTH RONALD RAY (CN)
YU YUEMING (CN)
WANG QINGCHAO (CN)
ZHOU ZHI (CN)
DUCKWORTH RONALD RAY (CN)
YU YUEMING (CN)
WANG QINGCHAO (CN)
ZHOU ZHI (CN)
Application Number:
PCT/CN2020/092956
Publication Date:
September 02, 2021
Filing Date:
May 28, 2020
Export Citation:
Assignee:
SHENZHEN SUNXING LIGHT ALLOYS MAT CO LTD (CN)
International Classes:
C22C29/18; C22C1/10
Foreign References:
| CN109439974A | 2019-03-08 | |||
| CN1393572A | 2003-01-29 | |||
| CN1605648A | 2005-04-13 | |||
| CN101403088A | 2009-04-08 | |||
| CN110423922A | 2019-11-08 | |||
| US20140233119A1 | 2014-08-21 | |||
| TW201228749A | 2012-07-16 | |||
| JPH11140579A | 1999-05-25 |
Attorney, Agent or Firm:
SZ KINDWALF INTELLECTUAL PROPERTY FIRM (CN)
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