Castings are used in a wide variety of applications due to their exceptional characteristics and great design flexibility in the process. It is a very effective procedure for creating items and consists of pouring molten metal into a mold that has a cavity in the shape of the casting. In sand casting, a permanent pattern is used to make the cavity shape while the actual mold is used only once.
Castings are entrenched in industry and manufacturing due to their great design flexibility as well as the ability to form the internal shape of a casting, by using a core. This core is usually a pre-formed sand aggregate that is inserted into the mold to shape the interior of the casting or part of the casting that cannot be shaped by the pattern. The core is located and held in the mold by core prints, formed by the pattern.
Aluminum is excellent for casting thanks to its weight, strength, and capability to take on different surface finishes. It is also 100% recyclable. Aluminum alloy castings are made from an alloy of aluminum combined with materials such as copper, silicon, magnesium, zinc, chromium, manganese, tin, or titanium. The alloy chosen depends upon the criteria demanded of alloy: its mechanical strength, machinability, surface appearance, resistance to corrosion, conductivity, pressure tightness, and other factors.
We can meet your casting needs. Our capabilities include:
1 to 100,000
Aluminum 319, 355, 356, 535 and 713
Unlimited with weights to 3000#
We can run customer supplied existing tooling, or build new from prints and/or 3D CAD Files. Using a variety of materials: Styrofoam, Wood, Metal, or Plastics.
Greensand Cope and Drag or Match plate Airset Cope and Drag, Match plate or loose pattern
Shell-core, Airset and oil sand
Both electric and gas fired
Anywhere from as-cast to a highly polished part, with a variety of secondary finishes (ex.: sandblast, bead blasting in both steel and glass)
Painting, Powder Coating, and Anodizing
Which alloy is best for you?
By itself, aluminum is a poor casting material, and that's why almost all aluminum castings are alloyed with another metal. There are more than 50 different aluminum alloys used for sand castings. The typical properties and characteristics of the most common are:
For many applications, aluminum alloy castings must be heat treated to obtain the properties required for the intended performance. Heat treating metal increases the casting's strength, hardness, toughness, and impact resistance. Heat treatments also improve the casting's machinability and minimize dimensional changes that occur at elevated service temperatures from metallurgical instability, which is encountered in the as-cast condition.