Refractory Material Colloidal Silica NN-3014

Description

Application
This product is a colloidal silica designed for precision investment casting. The shell will have high surface smoothness and high temperature strength etc if use this colloidal silica. Significantly improve the yield of castings.

Performance  Parameter  

Model	NN-3008	NN-3014
SiO2(%)	30±1	30±1
Particle Size(NM)	8-10	10-15
Viscosity （25℃,mPa·S）	＜7	＜7
pH	9.0-10.5	9.0-10.5
Warranty	一年One year	一年One year
Application	Investment Casting	Investment Casting

Product features
Add the wetting agent and defoamer to the mixing tank, then add the colloidal silica, stir evenly, then add the refractory powder while stirring constantly, continue to stir until the system is fully stable and the viscosity is measured. If the viscosity of the system is too high, add colloidal silica sol to dilute; if the viscosity of the system is too low, add amount of refractory powder until the viscosity is suitable.

packaging and storage
1)The main package are 25KG drum, 250KG barrels and 1 ton IBC bucket.
2)Avoid exposure, storage temperature is 0-40 ° C,if below 0 ° C will be gelled, then scrapped.
3)Avoid exposure to air for long time.