Low-Pressure Die Casting and its Benefits

Low-Pressure Die Casting

Aluminum low pressure die casting is a method that fills molds with molten metal such as aluminum and magnesium utilizes pressure rather than gravity. In this particular process, below the cast, the holding furnace is located and through a riser tube, the liquid metal is forced upwards and then into the cavity. 

Constantly the pressure is applied. The pressure is released once the cast has solidified and any residual liquid present in the tube or cavity flows back into the holding furnace for recycling purposes. The cast is simply removed when it gets cooled. Into a sealed furnace holding a tank of molten metal low-pressure air is introduced.

Benefits of Low-Pressure Die Casting

This aluminum low pressure die castingprocess allows having precise control of the filling process. In this way, if the molten metal is injected then it reduces oxide formation and reduces porosity, ensuring superior consistency from top to bottom. This method is however greatly suited to simpler, symmetrical forms, but with the use of sand cores within the molds more complex geometries can be achieved.

The low-pressure die casting process lends itself well to automation with the advantage of uncomplicated machinery and technology. In this particular process, below the cast, the holding furnace is located and through a riser tube, the liquid metal is forced upwards and then into the cavity. Constantly the pressure is applied.

Alternatives

You will find various alternatives to low-pressure casting. The high-heat properties of sand make this a highly exceptional method of molding. Another option you will find is investment casting. Gravity casting (or permanent mold casting) is another alternative to low-pressure casting.The strength to weight ratio is quite superior. Forging is always porosity free unlike some casting processes as a result it allows relatively straightforward heat treatment processes that highly improve selected mechanical characteristics.  

It is a simple process of filling hollow forms with molten metal and allowing gravity to flow into every recess of the mold. Gravity casting offers several benefits such as faster production times, smooth surfaces, and superb dimensional accuracy. You will find different aluminum low pressure die casting manufacturer near you.