The Advantages of Investment Casting

The investment casting process which is also called lost wax process, can produce the most complicated shapes in just about any alloy. In order to produce and machine these parts, Sieg-Huao has rich knowledge of the alloys and much experience of more than 50 years. There is no other metal working process that provides the design freedom to easily cast complex intricate shapes and assemblies except the investment casting process. The lost wax method performs very well than any other casting process when it comes to superior surface finishes especially when compared to sand casted, forged or welded fabrications.  Here we summarize some specific benefits as below:

Good Reliability
The investment casting process provides reliable process controls and repeatability that are maintained from casting to casting.

Precise Tolerances 
Investment Casting routinely holds to tolerances of ± .005”. This is not always possible with other types of casting processes.

Lower Tooling Cost
The initial wax injection mold to produce the patterns, averaged over the entire production quantity, is often lower than other casting tooling costs. Quality tooling produces a quality part and will be more cost efficient in the long run.

Better for the Environment
An investment casting is produced from 9 wax patterns which in most cases can be reclaimed and used again. The wax pattern is a great way to see your part before it is cast, thus eliminating expensive revisions and reducing metal scrap. More importantly, the investment casting process produces parts to net or near net shapes which significantly reduces or eliminates the amount of secondary machining. Most scrap from secondary services like machining can be reused as well.

Design & Casting Versatility
Sieg-Huao works with over several tens of different ferrous and non-ferrous casting alloys. This allows our investment casting process to be used in a variety of industries as it produces a wide range of cast and casting based assemblies. Lost wax castings provide the maximum design flexibility for manufacturing complex, multi part products in many cases.

Intricate design

When using investment casting, design engineers can easily incorporate features such as logos, product numbers, and letters into their component. Thru holes, slots, blind holes, external and internal splines, gears, and thread profiles can often be cast to reduce secondary machining time and total part cost.