Tooling in metalcasting and CNC machining refers to reusable items that are specific to each job. In investment casting, tooling is considered to be wax-injection dies used to create wax patterns. If you're familiar with how investment casting works, you already know that these wax patterns form the basis of the investment casting process. Each part begins as a wax pattern, and the properties of wax – smooth surface, low melting temperature and excellent flow properties – that make highly complex investment castings possible.
This year the Steel Founders' Society of America (SFSA) introduced a national competition to engage students with steel casting and help foundries connect with the next generation of manufacturing professionals. Inspired by History Channel's Forged in Fire, the Cast in Steel competition brings teams of engineering students from around the country together to find out who can cast the best Viking axe. Testing, judging and awards took place prior to CastExpo in Atlanta, GA.
All metal casting processes have their own unique characteristics. When designing a new part for casting, the most appropriate process should be determined by a number of factors, including:
- Tooling costs
- Labor costs
- Design characteristics
- Desired appearance
The goal of the manufacturer and the supplier should be to find the optimal balance that produces the lowest per-part cost at a given quantity, while meeting or exceeding all quality requirements.
Here, we compare investment casting to three metal casting processes: shell mold casting, greensand casting and permanent mold casting.
Eagle Precision Cast Parts, Inc. just released a downloadable resource, titled Investment Casting Process Guide: A Comprehensive Introduction to Investment Casting.
The goal of the 21-page ebook is to make it easy for manufacturers, and anyone else who's interested, to learn the basics of investment casting. Manufacturers looking for a better way to produce parts can find information on tolerances, design recommendations and a full case study.
Investment casting, sometimes known as lost-wax casting, is a metal forming method known for its ability to produce parts with tight tolerances, complex inner cavities and accurate dimensions.
As we discussed in our Introduction to Investment Casting post, the basic technique has existed for millennia. Over the years, innovations in equipment and methodology have kept pace with demand. Today, investment casting is one of the most popular forms of metal casting.
Read on to learn more about the unique process of investment casting.
Investment casting is nearly as old as metalcasting itself, with the earliest known examples dating back to 3,500 BC. Before investment casting was invented, metal castings were created using open stone or ceramic molds. Investment casting allowed for much greater detail and smoother finish, vastly expanding the possibilities of metal casting.
Today, investment casting is one of the most versatile methods of metal casting. The process, which is still similar to that used over 5,000 years ago, allows for tighter tolerances, more intricate shapes and smoother surface finishes than other metal casting methods.
It all started on a routine facility tour
While touring a client’s facility, representatives of Eagle Precision Cast Products noticed a cable clamp assembly–a relatively complex fabricated part that they believed would be an excellent candidate for fabrication to casting conversion.