Why Choose Us

In order to reliably improve the air permeability of the precision casting shell in the face of complex thin-walled castings, the exhaust holes can be reliably set up at the high height during the processing process, and the gating system can be reasonably arranged. This can reliably prevent its pouring coil gas, which can be conducive to the discharge of gas in the cavity, and the temperature of its pouring can be appropriately increased in the process of pouring, and the distance between its pouring nozzles can be lowered as much as possible, and the pouring speed also needs to be reduced. In this way, the molten metal can be reliably filled smoothly, which can reliably prevent the gas from being involved, resulting in the smooth discharge of the liquid metal and the gas in the cavity. The silica sol precision casting shell roasting should be sufficient, so that there will be enough temperature to reliably ensure that the precision casting shell is roasted thoroughly and the gassing substances are fully discharged, and the color of the shell is light gray or white during the roasting process, and there should be no black spots.

A metal die is made, the impression being the same as required in the final mould.
 
Molten wax is injected into the metal die to create a pattern, allowed to solidify and then removed. Some complex wax patterns are fabricated by joining several separate patterns together using an adhesive.
 
The waxes are then assembled on a wax tree, many parts can be put on the tree depending on size, it is common for components to be in the weight range of 0.1kg up to 50kg.
 
The tree is then immersed in silica sol zircon slurry to coat the wax, the slurry is exceptionally fine with low viscosity resulting in an excellent as-cast surface finish. The slurry is coated with refractory material and the process is repeated several times until a shell is created around the wax pattern.
 
The drying process is critical. The shells must be allowed to dry naturally at a constant temperature to allow the silica sol-gels and refractory particles to bond, the result is a strong, high-quality shell mould.
 
The trees of wax are put into ovens of about 200 degrees to melt out the wax.
 
When all wax is removed the trees are heated up to over 1000 degrees to complete preparation for casting.
 
The metal is then poured into the hot moulds, which allows the alloy to reach the thinnest sections of the mould before it solidifies.

First of all, from the perspective of product structure, Silica Sol Casting Parts mainly includes molds, cavities, gating systems, exhaust fans and other parts, among which molds are the core of the casting process, which directly affects the quality of products. Therefore, when choosing colloidal silicone casting products, we should pay attention to the design and processing accuracy of the mold.


Next, from the perspective of how to choose products, we must first clarify the type and quantity of products to be made, and then choose the appropriate Silica Sol Casting Parts manufacturer according to actual needs. When choosing a manufacturer, you should pay attention to choosing a manufacturer with a good reputation and rich experience to ensure the quality and delivery cycle of the product. In addition, it is also necessary to consider the technical strength and service level of the manufacturer to ensure that it can provide high-quality after-sales service.

Let's talk about the advantages of the product. Colloidal silica casting products have the characteristics of high precision, high corrosion resistance and environmental protection. Due to the good stability of silica sol, the metal products produced have high precision and smooth surface, which can meet the manufacturing needs of various complex shapes. In addition, silica sol also has good corrosion resistance and environmental protection, and can meet the requirements of various harsh environments and corrosive media.

Finally, from the perspective of use scenarios, colloidal silica casting is widely used in the production of various metal products, such as precision parts, medical equipment, auto parts, etc. In addition, due to its environmental friendliness, colloidal silica casting is also suitable for fields such as the food industry and the pharmaceutical industry.