Know About Silica Sol Casting Through This Post!!!

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You may have heard about various types of casting, but not silica sol casting. Custom silica sol casting uses silica sol zircon sand as the molding material. The main aim of using silica sol zircon over other materials is that it can withstand temperatures up to 2000 degrees. Let’s see why this is a great alternative for other types of castings. 

In this article, we will share some benefits of silica sol casting. Read on to know what these are: 

Advantages of silica sol casting:

Silica sol casting is an advanced lost-wax casting process. It has the advantage of high molding accuracy, good surface quality, and excellent mechanical properties. So what are its specific advantages? Continue reading…

Excellent surface quality:

The magnesium alloy castings produced with silica sol shell have a clean surface and no sand inclusion defects; no pinhole defects such as pits, cracks, etc.; smooth surface, small friction coefficient, and excellent wear resistance; thin-film shell with low thermal conductivity to prevent molten metal burn-through; high dimensional accuracy, small deformation; box core without burr, high filling ability, reduce post-processing work.

High dimensional accuracy:

The transverse shrinkage rate of silica sol casting is only 0.3% to 0.5%, which can be controlled by 0.2% by scientific formula design and strict process control; the transverse shrinkage rate is only 2%-4%, which can be controlled by 1% by scientific formula design and strict process control. 

The average surface roughness Ra can reach 1.6 μm and the average dimensional deviation can reach CT7-9 level; the maximum weight can reach 15 tons, the maximum length can reach 4 meters, and the minimum wall thickness can reach 3mm.

The takeaway:

All in all, silica sol casting is a pretty good option for projects that need quality at an affordable price. 

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