Extrusion die casting method for thin-walled aluminum alloy component used for automobile engine
A technology for automobile engines and aluminum alloys, which is applied in the field of extrusion die casting and extrusion die casting of thin-walled aluminum alloy parts, can solve the problems of low axial dimensional accuracy, low compactness and complexity, and achieve good market and economic value. , The effect of promoting economic benefits and optimizing process parameters
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Embodiment 1
[0031] Example 1 (1250T bedroom extrusion machine produces castings)
[0032] The extrusion die-casting method of the thin-walled aluminum alloy automobile engine pump body cover of the present embodiment comprises the following steps:
[0033] 1) Material composition: The weight percentage of the aluminum alloy material composition is: 9.6-12% Si, 1.5-3.5% Cu, Mg≤0.3%, Mn≤0.5, Fe≤1.3%, Zn≤1%, Ni≤0.5% , Sn≤0.3%, Pb≤0.3, Ti≤0.2, and the rest is Al.
[0034] 2) Melting: Put the aluminum alloy material into the crucible furnace to make the melting temperature of the molten aluminum reach 720°C-750°C, put a degasser and 300 grams of slag remover into each furnace, and complete the refining after 10 minutes, and control the temperature of the soup Keep it at 720°C-750°C, and after running to the holding furnace, control the temperature of the molten aluminum at 670°C-680°C. (As a modified solution, smelting: put the new and old materials of aluminum alloy materials into the cruci...
Embodiment 2
[0040] On the basis of embodiment 1, this embodiment has the following modifications:
[0041] Material composition: Si6.5-8.5%, Cu1.5-2.0%, Mn0.1-0.4%, Mg0.8-1.2%, Zn<0.1, Ti0.1-0.35%, and the rest is aluminum.
Embodiment 3
[0043] On the basis of embodiment 1, this embodiment has the following modifications:
[0044] Material composition: 6-8% Al, 0.17-0.4% Mn, 0.45-0.9% Zn, 0.8-1.2% RE, 1.5-2.5% Ti, Si<0.05%, Cu<0.025, Ni<0.001%, Fe<0.004 %, the rest is Mg.
[0045] The extrusion die-casting method of an automobile engine cylinder head or a cylinder cover is the same as that of the above-mentioned three embodiments.
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