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1. (WO2013147406) GRAIN REFINER AND REFINEMENT METHOD FOR MAGNESIUM ALLOY, PREPARATION METHOD FOR MAGNESIUM ALLOY USING SAME, AND MAGNESIUM ALLOY PREPARED THEREBY
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/147406 International Application No.: PCT/KR2013/000215
Publication Date: 03.10.2013 International Filing Date: 10.01.2013
IPC:
C22C 1/05 (2006.01) ,C22C 23/00 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
1
Making non-ferrous alloys
04
by powder metallurgy
05
Mixtures of metal powder with non-metallic powder
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
23
Alloys based on magnesium
Applicants: KOREA INSTITUTE OF MACHINERY AND MATERIALS[KR/KR]; 171 Jang-dong Yuseong-gu Daejeon 305-343, KR
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
Agent: LEE, Won Hee; 8th Fl. Sung-ji Heights II 642-16 Yoksam-dong Kangnam-ku Seoul 135-080, KR
Priority Data:
10-2012-003053326.03.2012KR
Title (EN) GRAIN REFINER AND REFINEMENT METHOD FOR MAGNESIUM ALLOY, PREPARATION METHOD FOR MAGNESIUM ALLOY USING SAME, AND MAGNESIUM ALLOY PREPARED THEREBY
(FR) RAFFINEUR DE GRAIN ET PROCÉDÉ D'AFFINEMENT POUR ALLIAGE DE MAGNÉSIUM, PROCÉDÉ DE PRÉPARATION POUR ALLIAGE DE MAGNÉSIUM LES UTILISANT ET ALLIAGE DE MAGNÉSIUM PRÉPARÉ AINSI
(KO) 마그네슘 합금의 결정립 미세화제 및 미세화 방법, 이를 이용한 마그네슘 합 금의 제조방법 및 이에 따라 제조되는 마그네슘 합금
Abstract:
(EN) 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.
(FR) La présente invention a pour but de proposer un raffineur de grain et un procédé d'affinement pour un alliage de magnésium, un procédé de préparation pour un alliage de magnésium les utilisant et un alliage de magnésium préparé ainsi. A cet effet, la présente invention propose un procédé d'affinement de grain pour un alliage de magnésium et un procédé de préparation pour un alliage de magnésium, le procédé d'affinement de grain comprenant les étapes de : (étape 1) revêtir un alliage de magnésium par un gaz de protection et chauffer et faire fondre celui-ci à la température de fusion de l'alliage de magnésium pour préparer un alliage de magnésium fondu ; ajouter le raffineur de grain pour un alliage de magnésium préparé par la présente invention à l'alliage de magnésium fondu préparé dans l'étape 1 ; et mouler par coulée l'alliage de magnésium fondu de l'étape 2 pour former une fonte d'alliage de magnésium avec des grains fins. Selon la présente invention, au lieu d'ajouter un raffineur ayant une composition unique comme dans un procédé classique, de multiples types de poudres présentant des effets d'affinement de réactivités différentes sont préparés en forme de poudre, granulé, bâton ou fil tout en contrôlant leur densité et rapport de mélange afin d'être injectés, permettant ainsi d'induire une génération de noyau hétérogène et de contrôler la réactivité avec un métal fondu afin de rendre maximal l'affinement d'un alliage de magnésium, de rendre minimale la concentration de réaction à une partie supérieure d'un métal fondu et d'obtenir en outre un effet d'agitation de la décomposition d'une poudre de carbonate.
(KO) 본 발명의 목적은 마그네슘 합금의 결정립 미세화제 및 미세화 방법, 이를 이용한 마그네슘 합금의 제조방법 및 이에 따라 제조되는 마그네슘 합금을 제공하 는데 있다. 이를 위하여 본 발명은 마그네슘 합금에 보호 가스를 도포한 후 마그네슘 합 금의 용해 온도까지 가열하고 용융시켜 마그네슘 합금 용탕을 제조하는 단계(단계 1); 상기 단계 1에서 제조된 마그네슘 합금 용탕에 본 발명에서 제조된 마그네슘 합금 결정립 미세화제를 첨가하는 단계(단계 2); 및 상기 단계 2의 마그네슘 합금 용탕을 주조하여 결정립이 미세한 마그네슘 합금 주조재를 형성하는 단계(단계 3); 를 포함하는 마그네슘 합금의 결정립 미세화 방법과 마그네슘 합금의 제조방법을 제공한다. 본 발명에 따르면 종래에 단일 조성의 미세화제를 첨가했던 것과는 달리, 반 응성이 상이한 미세화 효과를 나타내는 다종의 분말을 밀도와 혼합비를 조절하여 분말형태, 펠렛형태, 로드형태 또는 와이어형태로 제조하여 투입함으로써, 불균일 핵생성 유도 뿐만 아니라 용탕과의 반응성을 조절하여 마그네슘 합금의 미세와 효 과를 극대화할 수 있고 용탕의 윗부분에서 반응이 집중되는 현상을 최소화 할 수 있으며 카보네이트 분말의 분해반응에 따른 교반 효과를 추가적으로 얻을 수 있다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)