Casting Impregnation: Defect Correction

19 Dec 2022

Luckily, there are ways to fix casting defects. When it comes to porosity defects, impregnation is one of the best solutions.

Casting Impregnation

Impregnation is a secondary operation that resolves microporosity in castings. Impregnation seals the casting by filling small pores with resin. This makes the part leak-free and pressure-tight.

This operation can convert rejected parts into conforming castings, therefore recovering material, machine time, and labor invested into your project.

While you can impregnate a variety of materials, at Batesville Products, we use impregnation as a last resort for rejected aluminum castings.

Two Impregnation Processes

1. Vacuum

Vacuum impregnation is often referred to as a wet process because involves resting a part in a tank of resin and mercury. Then, the parts are heat cured.

2. Vacuum Pressure

Vacuum pressure impregnation is often referred to as a dry process. The parts are injected with resin and pressurized.

Double Impregnation

The impregnation process is often repeated. A part may be impregnated 1-3 times before the porosity is resolved. When a part is put through the impregnation process multiple times, it is often called double or triple impregnation.

Correcting Casting Defects

As you might have guessed, the best way to fix casting defects is by preventing defects from occurring in the first place. Batesville Products has been perfecting the casting process for over 75 years to manufacture high-quality aluminum castings every time.

Reach out to our team to learn more about permanent mold casting.

It never hurts to check

Request a quote and a Batesville team member will be in touch to discuss your metalcasting goals and how our metalcasting experts can help make your next project a success.