Cast aluminum alloy applied to automobile suspension bracket and preparation method of cast aluminum alloy
A technology for casting aluminum alloys and automobile mounts, applied in the field of casting aluminum alloy materials, can solve the problems of not conforming to the development direction of lightweight automobiles, reducing the service life of brackets, increasing the self-weight of automobiles, etc., so as to reduce adverse effects and reduce The effect of reducing raw material cost and weight reduction
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[0023] Example 1:
[0024] The new cast aluminum alloy material for automobile suspension brackets has a chemical composition of Si: 6.3%, Cu: 3.4%, La: 0.02% and Ce: 0.04%, and the rest is Al. Named as 1# alloy.
[0025] The preparation steps are as follows:
[0026] (1) First, weigh the raw materials in proportion, the main raw materials include: industrial pure aluminum, industrial pure silicon, electrolytic copper and aluminum rare earth intermediate alloy.
[0027] (2) After heating industrial pure aluminum, industrial pure silicon and electrolytic copper to 750-850°C in a smelting furnace, add the weighed aluminum rare-earth master alloy and continuously stir until uniform.
[0028] (3) Quickly determine the content of alloying elements in casting samples, and adjust the alloying elements to a predetermined range by adding raw materials.
[0029] (4) Casting molten aluminum into a metal mold to make a blank, which is artificially aged at 150°C for 6-10 hours. Example 2:
Example Embodiment
[0029] (4) Casting molten aluminum into a metal mold to make a blank, which is artificially aged at 150°C for 6-10 hours. Example 2:
[0030] The new cast aluminum alloy material for automobile suspension brackets has a chemical composition of Si: 6.7%, Cu: 3.9%, La: 0.03% and Ce: 0.07%, and the rest is Al. Named as 2# alloy.
[0031] The preparation method is the same as in Example 1.
Example Embodiment
[0032] Example 3:
[0033] The new cast aluminum alloy material for automobile suspension brackets has a chemical composition of Si: 6.3%, Cu: 3.5%, La: 0.02% and Ce: 0.05%, and the rest is Al. Named as 3# alloy.
[0034] The preparation method is the same as in Example 1.
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