A kind of casting aluminum-silicon alloy and preparation method thereof
A technology for casting aluminum-silicon alloys and intermediate alloys, which is applied in the field of metal materials, can solve the problems of poor heat dissipation and toughness of aluminum-silicon alloys, and cannot meet the needs of aluminum-silicon alloys, and achieve improved toughness, improved Fe phase morphology, and low thermal cracking effect of propensity
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Embodiment 1
[0038] A cast aluminum-silicon alloy, comprising the following components by mass percentage: Si: 8.5%; Fe: 0.1%; Co: 0.15%; Eu: 0.12%; B: 0.04%; La: 0.09%; Zn: 0.2% ; Unavoidable impurities Cr+Mn+V+Ti: less than 0.01%; the balance is Al.
[0039] The preparation method of the cast aluminum-silicon alloy is:
[0040] (1) According to the set chemical composition, weigh industrial pure aluminum, crystalline silicon, Al-20Fe master alloy, Al-10Co master alloy, Al-3B master alloy, Al-La master alloy, pure zinc, Al -Eu master alloy. Wash and dry the weighed raw materials for later use.
[0041] (2) Melt industrial pure aluminum preheated to 150°C in a smelting furnace at a melting temperature of 780°C. After melting, add 0.4% slag removal agent based on the mass of the aluminum ingot, stir for 20 minutes, and keep warm for 30 minutes after removing slag ;
[0042] (3) After cooling the melt in step (2) to 750°C, add crystalline silicon, Al-20Fe master alloy, and Al-10Co master...
Embodiment 2
[0046] A cast aluminum-silicon alloy, comprising the following components by mass percentage: Si: 9.0%; Fe: 0.1%; Co: 0.16%; Eu: 0.13%; B: 0.04%; La: 0.08%; Zn: 0.3% ; Unavoidable impurities Cr+Mn+V+Ti: less than 0.01%; the balance is Al.
[0047] The preparation method is the same as in Example 1.
Embodiment 3
[0049] A cast aluminum-silicon alloy, comprising the following components by mass percentage: Si: 9.5%; Fe: 0.15%; Co: 0.23%; Eu: 0.14%; B: 0.04%; La: 0.1%; Zn: 0.4% ; Unavoidable impurities Cr+Mn+V+Ti: less than 0.01%; the balance is Al.
[0050] The preparation method is the same as in Example 1.
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