Our investment casting foundry uses cutting-edge technology to produce high-quality investment castings in various dimensions and shapes.

As one of the leading investment casting manufacturers in China, we work with all metal alloys and customize each casting to meet precise material specifications, including custom compositions.

Our investment casting factory applies stringent quality control at every stage, ensuring premium investment casting at competitive prices.

Investment Casting Steps

Step 1: Tooling Creation

Tooling is the foundation of precision investment casting. Our CNC-machined tooling ensures accuracy and precision for top-level castings.

For new products, a one-time tooling cost may apply, but this fee is waived for subsequent orders, making it a cost-effective choice for high-volume production.

Step 2: Wax Injection & Pattern Assembly

In this stage, wax is injected into the tooling to create a wax pattern matching the dimensions of the final product.

Multiple wax patterns are assembled onto a sprue and left to dry at room temperature, forming the base for the investment casting process.

Step 3: Shell Coating

The wax pattern assembly is dipped in ceramic slurry and coated with refractory materials to create a strong shell.

This shell is gradually built up to the required thickness and dried in a controlled environment.

Step 4: Dewaxing

Using a steam autoclave, we rapidly heat the ceramic shell, melting and removing the wax to leave a ceramic mold.

This process, conducted at 1600-2000°F, prepares the mold for casting and explains why investment casting is also called “lost wax casting.”

Step 5: Metal Pouring

Steel or aluminum ingots are melted and poured into the ceramic mold, where they cool to take the shape of the mold.

This is a crucial step in the investment casting process that ensures precise reproduction of the final product.

Step 6: Shell Removal

Once cooled, the ceramic shell is broken off, and excess metal is removed from the casting by grinding, a step essential to refining the finished investment casting.

Step 7: Heat Treatment

Heat treatment processes, such as normalizing, tempering, and hardening, are applied to improve the mechanical properties of the casting.

This step, which can be added based on requirements, may involve additional investment casting price considerations.

Step 8: Shot Blasting

Shot blasting removes scales and enhances the surface finish of the investment castings.

Our foundry is equipped with state-of-the-art shot blasting machinery to ensure smooth surfaces and high-quality finishes.

Step 9: Anti-Rust Coating & Surface Treatments

To prevent rust, castings are dipped in anti-rust solutions.

Additional surface treatments, such as painting and galvanizing, are also available.

Step 10: Quality Inspection

Quality control is conducted on each investment casting.

Our QC team performs dimensional checks, surface inspections, and defect analysis to ensure that only fully qualified products proceed to delivery.

Step 11: Packaging

Investment castings are packaged in poly bags, carton boxes, and wooden cases.

Custom packaging options are available, ensuring safe and reliable delivery.

By maintaining high standards across every stage, our investment casting foundry delivers competitively priced, quality-assured investment castings tailored to meet diverse industry specifications.