WHAT IS ALUMINUM DIE CASTING?
Aluminum die casting alloys are
lightweight and possess high dimensional stability for complex part
geometries and thin walls. Aluminum withstands good corrosion resistance
and mechanical properties as well as high thermal and electrical
conductivity, making it a good alloy for die casting. Low-density
aluminum metals are essential to the die casting industry. The Aluminum
Die Casting process retains a durable strength at very high
temperatures, requiring the use of cold chamber machines. The molten
metal is still contained in an open holding pot which is placed into a
furnace, where it is melted to the necessary temperature. The open
holding pot is kept separate from the die casting machine and the molten
metal is ladled from the pot for each casting because these high
temperatures would damage the normal pumping system. The pressure
requirements for cold chamber castings are typically higher than those
of hot chamber die castings.aluminum die casting companies
A manufacturing process that produces accurately, defined, smooth and textured-surfaced metal parts
Accomplished by forcing molten metals into a mold form due to high-pressure systems
Corrosion resistant
Highly conductive
Have a good stiffness and strength-to-weight ratio
Based on rapid production
Allows a high volume of die casting parts to be produced very quickly
Is more cost-effective than alternative casting processes
The casting process implements a steel mold often capable of producing
tens of thousands of castings in rapid succession. The die must be made
in at least two sections to permit removal of castings. The casting
cycle begins with the two die halves are clamped tightly together by the
die casting press. Molten aluminum is injected into the die cavity
where it solidifies quickly. These sections are mounted securely in a
machine and are arranged so that one is stationary while the other is
moveable. The die halves are drawn apart and the casting is ejected. Die
casting dies can be simple or complex, having moveable slides, cores,
or other sections depending on the complexity of the casting. Most
machines use mechanisms actuated by hydraulic cylinders to achieve
locking. Others use direct acting hydraulic pressure. Die casting
machines, large or small, very fundamentally only in the method used to
inject molten metal into the die.
By | buzai232 |
Added | Jul 23 '19, 11:56PM |
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