silica solPrecision castingIts development in China is relatively late. The manufacturing process for these products requires high precision, and silica sol...Precision castingWe need to further strengthen our understanding of product processes in both theory and practice, and continuously supplement our basic professional knowledge.
Silica sol precision casting has enriched its practical experience. During the operation, it will streamline the entire precision casting production process and cast more high-quality products. During the filling process, the foam model needs to be decomposed by liquefaction, which will generate a lot of small molecule gas and foam dust.
These substances are harmful to humans to a certain extent. In daily work, operators must strictly follow the operating manual. Whether it is actual operation or auxiliary protective equipment, it must be carried out in accordance with the requirements. During the production process, it is necessary to master the operating procedures and steps.
For some complex thin-walled castings, in order to effectively improve the permeability of the mold shell of the precision casting during use, vent holes can be set at the highest point where possible. This reasonable setting of the gating system can prevent air entrapment during pouring.
In the process of using silica sol precision casting, it is advisable to appropriately increase the pouring temperature, minimize the distance between the ladle nozzle and the pouring cup, and reasonably and effectively reduce the pouring speed. This will allow the molten metal to fill the mold smoothly.
The mold shell for silica sol precision casting must be fully baked at a sufficiently high temperature during operation to ensure thorough baking and complete removal of gas-emitting substances. A fully baked mold shell is white or light gray and should not have black spots.
