Title:
GRAIN REFINER AND REFINEMENT METHOD FOR MAGNESIUM ALLOY, PREPARATION METHOD FOR MAGNESIUM ALLOY USING SAME, AND MAGNESIUM ALLOY PREPARED THEREBY
Document Type and Number:
WIPO Patent Application WO/2013/147406
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a grain refiner and a refinement method for a magnesium alloy, a preparation method for a magnesium alloy using the same, and a magnesium alloy prepared thereby. To this end, the present invention provides a grain refinement method for a magnesium alloy and a preparation method for a magnesium alloy, the grain refinement method comprising the steps of: (step 1) coating a magnesium alloy with a protection gas, and heating and melting the same to the melting temperature of the magnesium alloy to prepare a molten magnesium alloy; adding the grain refiner for a magnesium alloy prepared by the present invention to the molten magnesium alloy prepared in step 1; and casting the molten magnesium alloy of step 2 to form a magnesium alloy cast with fine grains. According to the present invention, instead of adding a refiner having a single composition as in a conventional method, multiple types of powders showing refinement effects of different reactivities are prepared into a powder-, pellet-, rod- or wire-shape while controlling the density and mixing ratio thereof so as to be injected, thereby inducing heterogeneous nucleus generation and controlling the reactivity with a molten metal so as to maximize the refinement of a magnesium alloy, minimize the reaction concentration at an upper portion of a molten metal, and further obtain a stirring effect of the decomposition of a carbonate powder.
Inventors:
YOU BONG SUN (KR)
KIM YOUNG MIN (KR)
KIM HA-SIK (KR)
BAE JUN HO (KR)
YIM CHANG DONG (KR)
PARK SUNG HYUK (KR)
MOON BYOUNG-GI (KR)
KIM YOUNG MIN (KR)
KIM HA-SIK (KR)
BAE JUN HO (KR)
YIM CHANG DONG (KR)
PARK SUNG HYUK (KR)
MOON BYOUNG-GI (KR)
Application Number:
PCT/KR2013/000215
Publication Date:
October 03, 2013
Filing Date:
January 10, 2013
Export Citation:
Assignee:
KOREA MACH & MATERIALS INST (KR)
International Classes:
C22C1/05; C22C23/00
Foreign References:
| KR100836599B1 | 2008-06-10 | |||
| KR100983823B1 | 2010-09-27 | |||
| JP2001342528A | 2001-12-14 | |||
| KR20100034773A | 2010-04-02 |
Attorney, Agent or Firm:
LEE, Won Hee (642-16 Yoksam-dongKangnam-ku, Seoul 135-080, KR)
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