Casting is a manufacturing process that involves pouring a liquid substance into a mold with a hollow hole in the desired shape and then solidifying it. The solidified portion, also known as a casting, is expelled or broken out of the mold to complete the process.
Casting has a lot of types; the most common and famous casting methods include water glass casting and silica sol casting.
Water Glass Casting
Sodium silicate casting is another name for water glass casting. Its casting process resembles that of investment casting (that is, the lost wax investment casting method). It’s a method of casting shells that employ water glass as a binder. When compared to sand casting, the method produces a considerably greater surface polish and dimensional precision. More sophisticated forms can also be created.
It has various advantages over sand casting, such as:
- The surface finish is superior to sand casting.
- Superior to sand casting in terms of dimensional correctness.
- Increase the complexity of your pieces
- Parts that are larger than those produced by ordinary investment casting.
- Investment casting is more expensive.
- Metals are available in a wider range.
- It gives benefits to the environment.
Silica Sol Casting
The molding material for the silica sol investment casting technique is silica sol zircon sand, which can withstand temperatures up to 2000 degrees. This molding substance is quite costly. Carbon steel and stainless steel castings are the most common materials cast using this method.
The following characteristics are common in these castings:
- Excellent corrosion resistance as well as dimensional precision.
- Surface quality is improved, and geometric dimension deviation is reduced.
- Auto parts, pipe parts, valve parts, pump parts, ship hardware, furniture ornamental pieces, and so on are all common uses.