Aluminium alloy for die casting, method for manufacturing same, and die casting method
AssigneeSamsung Electronics Co., Ltd.
InventorsSungtae Park, Sangjun Park, Won Ju, Jungsoo Lim
Life of this patent
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Abstract
Provided is an aluminum alloy for die casting. The aluminum alloy includes: 3-10 wt % silicon (Si); 0.1-2.0 wt % magnesium (Mg); 0.01-1.3 wt % iron (Fe); 0.01-2.0 wt % zinc (Zn); 0.01-1.5 wt % copper (Cu); 0.01-0.5 wt % manganese (Mn); 0.01-0.5 wt % chrome (Cr); 0.01˜2.0 wt % lanthanum (La); 0.01˜2.0 wt % cerium (Ce); 0.01˜2.0 wt % strontium (Sr); rest aluminum (Al); and unavoidable impurities. The aluminum alloy is improved in not only corrosion-resistance but also physical properties.
Claims14
A die-castable aluminum alloy consisting of:
- 3-10 wt % silicon (Si);
- 0.8-1.2 wt % magnesium (Mg);
- 0.01-1.3 wt % iron (Fe);
- 0.01-2.0 wt % zinc (Zn);
- 0.01-1.5 wt % copper (Cu);
- 0.01-0.5 wt % manganese (Mn);
- 0.01-0.5 wt % chromium (Cr);
- 0.01-2.0 wt % lanthanum (La);
- 0.01-2.0 wt % cerium (Ce);
- 0.01-2.0 wt % strontium (Sr);
- rest aluminum (Al);
- and
- less than 0.01 wt % of unavoidable impurities.
A method of manufacturing a die-castable aluminum alloy, the method comprising:
- manufacturing a master alloy comprising lanthanum (La), strontium (Sr), and cerium (Ce);
- melting silicon (Si), magnesium (Mg), iron (Fe), zinc (Zn), copper (Cu), manganese (Mn), chromium (Cr), and aluminum (Al) in a crucible;
- and
- adding the master alloy to the crucible so that the die-castable aluminum alloy consists of 3-10 wt % silicon (Si), 0.8-1.2 wt % magnesium (Mg), 0.01-1.3 wt % iron (Fe), 0.01-2.0 wt % zinc (Zn), 0.01-1.5 wt % copper (Cu), 0.01-0.5 wt % manganese (Mn), 0.01-0.5 wt % chromium (Cr), 0.01-2.0 wt % lanthanum (La), 0.01-2.0 wt % strontium (Sr), 0.01-2.0 wt % cerium (Ce), rest aluminum (Al), and less than 0.01 wt % of unavoidable impurities at percentages by weight with respect to its total weight.
A die casting method comprising:
- melting an ingot of a die-castable aluminum alloy, which consists of 3-10 wt % silicon (Si), 0.8-1.2 wt % magnesium (Mg), 0.01-1.3 wt % iron (Fe), 0.01-2.0 wt % zinc (Zn), 0.01-1.5 wt % copper (Cu), 0.01-0.5 wt % manganese (Mn), 0.01-0.5 wt % chromium (Cr), 0.01-2.0 wt % lanthanum (La), 0.01-2.0 wt % cerium (Ce), 0.01-2.0 wt % strontium (Sr), rest aluminum (Al);
- and less than 0.01 wt % of unavoidable impurities, in a melting furnace;
- and
- pouring the melted die-castable aluminum alloy from the melting furnace to a sleeve;
- and
- pushing the melted die-castable aluminum alloy into a mold by a plunger at a predetermined speed and a predetermined pressure.
Dependencies are inferred from the claim text.