Technology for processing lightweight anti-crack aluminum alloy for manufacturing vehicle body
A processing technology and body manufacturing technology, applied in the field of alloys, can solve problems affecting the mechanical properties, air tightness and corrosion resistance of aluminum alloy castings, large internal stress, and small specific gravity, so as to achieve excellent crack resistance and avoid shrinkage cavities And the effect of shrinkage and reduction of processing cost
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Embodiment 1
[0020] A processing technology for a light-weight crack-resistant aluminum alloy used in body manufacturing. The components of the light-weight crack-resistant magnesium-aluminum alloy and the mass percentages of each component are: Cu: 1.2%, Zn: 0.3%, Li: 0.1 %, Ni: 1.1%, Zr: 0.2%, Ti: 0.3%, Hf: 0.1%, Si: 1.5%, V: 0.3%, Mg: 0.6%, rare earth: 3.2%, and the rest is Al.
[0021] The specific processing technology is:
[0022] (1) Prepare a certain alloy raw material according to the ratio of metal elements in the light-weight and crack-resistant magnesium-aluminum alloy, put it into a vacuum induction furnace, heat it up to 820°C and melt it, and add a refining agent to refine it after it is completely melted into an alloy liquid;
[0023] (2) Add a modifier to the refined alloy liquid, raise the temperature to 920°C and keep it warm for 0.5h, then rapidly raise the temperature to 1000°C, and cast it into an aluminum alloy ingot at a rate of 35°C / min;
[0024] (3) When the surf...
Embodiment 2
[0030] A processing technology for a light-weight, crack-resistant aluminum alloy used in vehicle body manufacturing. The components and mass percentages of each component are: Cu: 2%, Zn: 5%, Li: 9 %, Ni: 2.1%, Zr: 0.5%, Ti: 0.5%, Hf: 0.7%, Si: 3.2%, V: 1%, Mg: 1.2%, rare earth: 15%, and the rest is Al.
[0031] The specific processing technology is:
[0032] (1) Prepare a certain alloy raw material according to the ratio of metal elements in the light-weight and crack-resistant magnesium-aluminum alloy, put it into a vacuum induction furnace, heat it up to 870°C and melt it, and add a refining agent to refine it after it is completely melted into an alloy liquid;
[0033] (2) Add a modifier to the refined alloy liquid, raise the temperature to 950°C and keep it for 1 hour, then rapidly raise the temperature to 1050°C, and cast it into an aluminum alloy ingot at a rate of 32°C / min;
[0034] (3) When the surface temperature of the aluminum alloy ingot drops to 320°C, put it i...
Embodiment 3
[0040]A processing technology for a light-weight, crack-resistant aluminum alloy used in body manufacturing. The components of the light-weight, crack-resistant magnesium-aluminum alloy and the mass percentages of each component are: Cu: 1.5-1.8%, Zn: 1.8-4% , Li: 1-7%, Ni: 1.3-1.8%, Zr: 0.3-0.5%, Ti: 0.4-0.5%, Hf: 0.2-0.5%, Si: 1.7-3%, V: 0.4-0.8%, Mg: 0.7-1%, rare earth: 5-12%, and the rest is Al.
[0041] The specific processing technology is:
[0042] (1) Prepare a certain alloy raw material according to the ratio of metal elements in the light-weight and crack-resistant magnesium-aluminum alloy, put it into a vacuum induction furnace, heat it up to 850°C and melt it, and add a refining agent to refine it after it is completely melted into an alloy liquid;
[0043] (2) Add a modifier to the refined alloy liquid, raise the temperature to 933°C and keep it warm for 0.7h, then rapidly raise the temperature to 1020°C, cool down at a rate of 30°C / min and cast it into an alumin...
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