A manufacturing process, where wax pattern is used to shape disposable ceramic mold is popular as investment casting. Usually, it is cast with molten metal. These castings are used worldwide to create plenty of products across wide sectors.
For example, in medical industry hip and knee joints are designed from investment casting or in aerospace sector they are used to create safety or landing components.
Reasons to use investment casting
Investment casting process is also referred as lost wax casting or precision casting. The main reasons to use this process are –
- Automated processes & sharp accuracy means your business obtains precision necessary from the parts without any significant cost for materials, machinery, and labor.
- You get uniform dimension and premium quality of cast parts without any concern
Materials used in investment casting
Basically metal alloys are used and the most common ones are described below.
- Carbon steel
- Tool steel
- High alloy steel
- Low alloy steel
- Stainless steels
- Cobalt-chrome alloys
- Cobalt alloys
- Nickel-copper alloys
- Nickel alloys
Factors to consider while designing investment casting process
- Flatness & straightness
- Blind holes
- Draft angle
Investment castings can have variety of finishes suitable for unique projects.
- Polished [Hand, Vibro, and Electro]
- Coated [Nickel, Powder, Black oxide, Zinc]
Textures can also be added to product through the process.
The capability of tolerance depends on linear dimension size and part’s geometry but investment casting holds 0.003” as minimal tolerance without any blend of extra processes. However, shrinkage is a factor to consider. Generally, shrinkage can be predicted and even the dimensional accuracy surpasses the product’s minimal requirements. For More Information About the Best precision casting, Please Check cimisf.com/castings