Method for preparing aluminum alloy component through powder metallurgy method
A powder metallurgy, aluminum alloy technology, applied in metal processing equipment, transportation and packaging, etc., can solve the problem of inability to prepare high-performance powder metallurgy aluminum alloy products, poor performance and near-net forming ability, long production process cycle, etc. problem, to achieve the effect of optimizing the alloy composition range, low price and reducing raw material cost
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Embodiment 1
[0026] Embodiment 1: A kind of method that adopts powder metallurgy method to prepare aluminum alloy part, concrete steps are as follows:
[0027] a. Proportion the raw material powder used according to the following mass fraction and median diameter, add amide wax C wax with a mass fraction of 1.5% as a lubricant, and then mix on a mixer for 30 minutes to obtain a uniformly mixed powder;
[0028] The mass percent and median diameter of each raw material powder used are as follows:
[0029]
[0030] b. the powder obtained in step a is pressed under a pressing pressure of 300MPa to obtain a circular green body with a diameter of 30mm;
[0031] c. Carry out sintering-solution treatment of the formed body obtained in step b under a nitrogen atmosphere. The specific process parameters are: 300°C (degreasing temperature) for 20min, 460°C for 20min, 560°C for 20min, 600°C for 50min, and heat up The speed is 2°C / min, then the temperature is lowered to 520°C, held for 120 minutes ...
Embodiment 2
[0035] Embodiment 2: A kind of method that adopts powder metallurgy method to prepare aluminum alloy part, concrete steps are as follows:
[0036] a. Proportion the raw material powder used according to the following mass fraction and median diameter, add amide wax C wax with a mass fraction of 1.5%wt as a lubricant, and then mix on a mixer for 60 minutes to obtain a uniformly mixed powder ;
[0037] The mass percentage, median diameter, and sintering density of Al at different median diameters of each raw material powder used are as follows:
[0038]
[0039] b. the powder obtained in step a is pressed under a pressing pressure of 300MPa to obtain a circular green body with a diameter of 30mm;
[0040] c. Carry out sintering-solution treatment of the formed body obtained in step b under a nitrogen atmosphere. The specific process parameters are: 300°C (degreasing temperature) for 40min, 460°C for 40min, 560°C for 50min, 600°C for 240min, heat up The speed is 8°C / min, and...
Embodiment 3
[0044] Embodiment 3: a kind of method that adopts powder metallurgy method to prepare aluminum alloy part, concrete steps are as follows:
[0045] a. Proportion the raw material powder used according to the following mass fraction and median diameter, add amide wax C wax with a mass fraction of 1.5%wt as a lubricant, and then mix on a mixer for 45 minutes to obtain a uniformly mixed powder ;
[0046] The mass percent and median diameter of each raw material powder used are as follows:
[0047]
Mg
Si
Cu
sn
Al
Quality score (%)
1.50
0.8
4.0
0.5
93.2
Median diameter (μm)
75
32
45
27
75
[0048] b. pressing the powder obtained in step a under a pressing pressure of 300 MPa to obtain a circular green body with a diameter of 30 mm;
[0049] c. Carry out sintering-solution treatment of the shaped green body obtained in step b under a nitrogen atmosphere, wherein the heating rate of the whole process is 5°C...
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