Colloidal Silica
Colloidal Silica Investment Casting Binders
Colloidal Silica is the most popular binder used in the precision investment casting industry today. It offers the investment caster a safe, economical, easy to use slurry component that performs well as either primary or backup slurry.
Colloidal Silica systems are very stable; able to form a long life ceramic slurry with a large range of refractory materials due to the binder’s chemical inertness. This versatility allows Colloidal Silica to form the basis of ceramic shells used for the casting of a large range of metal alloys.
Ceramic shells formed with colloidal silica binder’s offer several advantages for the investment process. The exceptionally strong bonds formed by the colloid enables ceramic shells to have a superior green and fired strength. Benefiting the investment caster with:
- An increased maximum pour weight
- Reduced material usage in the back up coat
- Better handling
Furthermore, use of colloidal silica binders has allowed investment casters a greater freedom of design with an increased level of intricacy to castings.
Ceramic shells using colloidal silica binders also display excellent refractory properties, high thermal resistant, with good resistance to thermal shock and crucially little shrinkage.
Remet supplies our proprietary Colloidal Silica REAMSOL®, which has been specifically designed for the investment casting industry. In addition to our own formulation, we also supply LUDOX™ Colloidal Silica binders.
