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Aluminum Alloy Precision Castings Casting Method
- Feb 02, 2018 -

Aluminum alloy precision castings surface clean and clean, high quality, excellent performance, has a wide range of applications in all aspects. Although a variety of casting methods are suitable for aluminum alloy precision casting table, but different aluminum alloy precision casting, casting method corresponding to their choice is also different, in this regard we should also have mastered.


Typically, small aluminum alloy precision castings can be horizontal or vertical type of production lines; for medium-sized large-scale castings of aluminum alloy, you can use resin from hard sand molding and core. The small single-piece production of heavy-duty aluminum alloy precision castings, still hand-based casting; there are some in the mass production of aluminum alloy precision castings, you can use low-pressure casting and centrifugal casting. In addition, you can also use die-casting method.


After analysis confirmed that the performance of aluminum alloy precision castings is closely related to its chemical composition, of which Al-Si alloy in eutectic composition near the time, the performance is very prominent; and Al-Cu alloy away from the eutectic, the solidification temperature range, Performance will be worse.


Alloy structure is much more complex than pure metal, it is because the alloy consists of two or more elements, the interaction between the elements will form a variety of different phases, the alloy cast into an aluminum alloy precision castings, the different phases The performance presented will vary.


In actual production, aluminum alloy precision castings has riser shrinkage, Al-Si alloy solidification temperature range, riser feeding efficiency, but also easy to get dense tissue castings; and other types of cast aluminum alloy solidification Large temperature range, riser feeding low efficiency, poor casting density.