A356 aluminum alloy efficient modifier and preparation method thereof
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A modification agent and aluminum alloy technology, which is applied in the field of high-efficiency modification agent and preparation of A356 aluminum alloy, which can solve the problems of weakening modification and refinement effect
Inactive Publication Date: 2018-07-24
QINHUANGDAO XINGLONG WHEEL HUB
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Abstract
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Problems solved by technology
If there are Zr, Cr, Mn and other elements in the alloy liquid, the "poisoning" phenomenon formed by the reaction with Ti and B elements will weaken the effect of deterioration and refinement
Method used
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Embodiment 1
[0018] 1. The mass percentage of each component element in the Al-Nd-Mg-Sb modifier alloy: Nd 3%, Mg 2%, Sb 5%, and the rest is Al. Calculate and weigh the quality of the corresponding Al-30wt%Nd, Al-10wt%Sb, magnesium ingots and aluminum ingots, grind and polish to remove the oxide layer on the surface, then ultrasonically clean in acetone solution for 10 minutes, and dry for later use;
[0019] 2. Heat the resistance furnace to 750°C. After the temperature is stable, put the aluminum ingot into a clean graphite crucible. After the aluminum ingot is completely melted, remove the surface scum and weigh the Al-Nd alloy in step 1;
[0020] 3. After 15 minutes of heat preservation, the Al-Sb alloy weighed in step 1 is added to the melt;
[0021] 4. After the Al-Sb alloy is melted, it is kept warm for 15 minutes, and the magnesium ingot wrapped in aluminum foil in step 1 is added to the melt;
[0022] 5. After the intermediate alloy is completely melted, stir the alloy melt ...
Embodiment 2
[0027] 1. The mass percentage of each component element in the Al-Nd-Mg-Sb modifier alloy: Nd 6%, Mg 5%, Sb 1%, and the rest is Al. Calculate and weigh the quality of the corresponding Al-30wt%Nd, Al-10wt%Sb, magnesium ingots and aluminum ingots, grind and polish to remove the oxide layer on the surface, then ultrasonically clean in acetone solution for 10 minutes, and dry for later use;
[0028] 2. Heat the resistance furnace to 730°C. After the temperature is stable, put the aluminum ingot into a clean graphite crucible. After the aluminum ingot is completely melted, remove the surface scum and weigh the Al-Nd alloy in step 1;
[0029] 3. After 15 minutes of heat preservation, the Al-Sb alloy weighed in step 1 is added to the melt;
[0030] 4. After the Al-Sb alloy is melted, it is kept warm for 15 minutes, and the magnesium ingot wrapped in aluminum foil in step 1 is added to the melt;
[0031] 5. After the intermediate alloy is completely melted, stir the alloy melt ...
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Abstract
The invention relates to an A356 aluminum alloy efficient modifier and a preparation method thereof. The modifier consists of the following components in percentage by mass: 2-10% of Nd, 1-5% of Mg, 1-5% of Sb and the balance of Al. The preparation method for the modifier comprises the following steps of: (1) providing an Al-Nd intermediate alloy, an Al-Sb intermediate alloy, an aluminum ingot anda pure magnesium ingot; (2) pre-treating the intermediate alloys and the magnesium ingot, grinding, polishing and removing surface oxide skin, and drying and weighing after cleaning; (3) heating theweighed dried intermediate alloys and the magnesium ingot to a temperature being 730-750 DEG C to melt in a graphite crucible, and keeping the temperature for 5 minutes or more; (4) after the intermediate alloys are completely molten, stirring for 10 minutes by a graphite stirring rod; (5) cooling a furnace temperature to 710-720 DEG C, adding a slag remover into molten alloy, and leading argon gas into melt to refine; and (6) preserving heat and staying for 15-20 minutes, removing surface scum, and pouring alloy into a metal mould to cool to obtain the alloy.
Description
technical field [0001] The invention belongs to the field of aluminum alloy material smelting and processing, and relates to an A356 aluminum alloy high-efficiency modifier and a preparation method. Background technique [0002] At present, environmental protection and energy saving are key considerations in the field of automobile manufacturing, and automobile lightweight has become the trend of the development of the world automobile industry. At present, to realize the lightweight of automobiles, design optimization can be carried out from the aspects of shape, material, manufacturing, design, and function. Among the existing lightweight materials, aluminum alloy is unique in terms of production cost, part quality, material utilization, manufacturing technology, mechanical properties, and sustainable development due to its low density, excellent corrosion resistance and plasticity. The comparative superiority has become the preferred lightweight material in the automotiv...
Claims
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Application Information
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