HS-1430 Silica Sol: A Foundation of Reliable Performance
HS-1430 silica sol is specifically designed to meet stringent requirements across various fields. Its average particle size falls within the ideal range of 10-16 nm, with SiO₂ content stabilized at 29-31%, Na₂O content ≤ 0.5%, pH maintained between 9.0-10.5, viscosity at 25℃ ranging from 3.0-8.0 mm²/s, and a specific gravity of 1.193-1.208. These precisely controlled parameters endow HS-1430 with numerous outstanding characteristics. In the field of investment casting, HS-1430 is an unparalleled choice for backing layer materials. Its slightly larger particle size helps construct a stable framework, providing robust support for shell molds, significantly enhancing their heat resistance and wear resistance. Additionally, HS-1430's excellent demolding performance ensures smoother removal of castings from molds, greatly improving production efficiency.
HS-830 Silica Sol: Precision Crafted Quality
HS-830 Silica Sol is an alkaline small-particle-size silica sol with a pH value typically ranging from 9.5 to 10.5 and a particle size precisely controlled between 8 and 10 nm. This minute particle size grants it a large specific surface area, exceptional binding capability, high-temperature strength, and the additional advantage of low shrinkage.
In investment casting, HS-830 performs outstandingly as a face coat silica sol. Its high binding capacity and small particle size enable the formation of a dense and smooth coating on the surface of castings, effectively enhancing dimensional accuracy and surface finish.
Synergistic Enhancement, Achieving Excellence
When HS-830 and HS-1430 are used together in processes such as investment casting, their complementary effects are even more remarkable. HS-830 is responsible for creating a refined face coat, ensuring the surface quality of the castings, while HS-1430 provides robust backing layer support for the entire shell mold, ensuring its stability and strength under high temperatures. Working in tandem, these two products optimize casting quality comprehensively from the face coat to the backing layer, effectively reducing the risk of deformation and cracking of castings under high temperatures. This synergy provides a reliable guarantee for producing castings with precise dimensions, smooth surfaces, and excellent internal quality.
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