Gravity Die Casting 

The Gravity Die Casting process utilises die/moulds and the molten material is fed by gravity.

Typically, small moulds below 5 kg are manipulated by hand and bigger moulds are manipulated by a machine.

These moulds are made from cast iron for small runs or Beryllium Copper for longer runs.

To create internal cavities either sand cores or metal cores are used with the sand cores allowing for more complex internal shapes that can be achieved in pressure die casting.  

Tooling for both sand cores and casting moulds are designed and made on-site in our own toolroom.

Contact us regarding our custom die-casting process and die casting applications.

We provide full project consultation to help you:

At EXIPRO, Gravity Die Casting processes provide numerous benefits over other types of metalworking methods. 

We used to produce parts that are finished-able to high surface finishes, pressure-tight.

At EXIPRO, Gravity Die Casting processes provide numerous benefits over other types of metalworking methods. 

We use Gravity die casting to produce parts that are finished-able to high surface finishes, pressure-tight.

Gravity Die Casting Advantages

Reduced final product weight 

Primary in feed material requirements reducing costs 

Lower tooling costs 

Suitable for long and short-run production batches 

Typical Gravity die casting parts 

Plumbing Valves 

Mixers & Taps 

Electrical Parts

Engineering Wear Parts 

Architectural hardware 

Decorative parts  

EXIPRO produces forgings from as small as 20 grams to 1 kg.

These are made using a variety of presses ranging from 100 tons to 350 tons.

The forgings can be cored to reduce weight  & cost. 

Forgings are made from billets, cut from extrusions where possible a standard round billet but at times due to complexity a special extruded shape is used.

Forgings are typically trimmed after forging to remove flash 

All tooling is made and designed on-site.  

Advantages

Brass forging offers a number of outstanding advantages over parts produced by other manufacturing processes such as casting. These advantages result from the inherent properties of Brass alloys plus additional improvements in mechanical and physical properties imparted by the forging process.

Custom brass forging offers excellent properties that you will not find in other processes.

Forged metal parts offer many desirable characteristics, including:

• High ductility
• Outstanding machinability
• Excellent joining and plating characteristics
• Superior polishing and finishing characteristics
• Superior mechanical properties
• High density
• Freedom from flaws
• Dimensional accuracy
• Repeatability
• Excellent surface finish
• Lustrous appearance after pickling

Many people are unable to determine when a part should be a casting or forging.

It is true as a result of the above that many parts that some unscrupulous suppliers claim are forgings are actually castings and therefore cheaper and more attractive price-wise and the customer is none-the-wiser until product failures occur.

A common example would be a brass handle where the only difference would be in the cast handles reduced ability to handle torque.

The solution 

Deal with suppliers who are clear /open on pricing/process differences and be aware of pushing the price too hard forcing the supplier to misrepresent a casting as a forging.

EXIPRO has extensive experience in assisting customers in choosing between casting and forging and always openly discusses the pros and cons with the customer.

As general rule castings are not used as parts that are exposed to rotational torque, twist or impact. 

Gravity castings are very useful in:

Reducing the cost if a part is made by forging and has a lot of excessive material weight due to forging limitations on coring can be reduced in the casting process by utilizing a  sand core.

EXIPRO has extensive experience in assisting customers in choosing between casting and forging and always openly discusses the pros and cons with the customers.