Precision casting process steps are shared by producers of silica sol casting
- By:Chichewa Trade
The following introduces the silica sol investment casting process:
1. Verify that the machinery and temperature control devices are operating normally.
2. Transfer the old wax liquid from the dewaxing kettle into the filter tank for filtration. After that, transport it to a static storage barrel and let it sit there for 6 to 8 hours at a temperature below 90 °C.
3. Pour the wax solution into the water removal bucket after stopping and draining the sediment water.
4. Take the wax liquid from the bucket, keep it heated (110 to 120 degrees Celsius), and stir to remove any remaining water until there is no froth on the wax liquid's top.
5. After the water has been removed, strain the wax liquid through a sieve with a mesh size of 60, place it in a static bucket II heated to 90 degrees, and keep it warm for at least 12 hours.
6. Every water removal bucket and static bucket needs to have the leftover water and dirt at the bottom routinely drained.
7. Transfer the recovered wax liquid from the static barrel II to the heat preservation barrel of the machine that produces material pipes primarily (runner).
8. High-quality railway castings should occasionally add new wax to the resting barrel II, often between 3% and 5%, depending on the performance of the previous wax and the wax consumption.
Growth of Knowledge
Although the size of silica sol precision casting is not very large and the criteria for precision are not very high, the aluminum frame tin bismuth can be utilized as a mold in use. This mold's net weight is relatively high, and the main reason is that it contains bismuth.
Because silica sol precision casting requires the fabrication of complex molds more quickly, production costs are reduced to some extent. Vent holes can be positioned where possible in complex thin-walled castings to efficiently increase the air permeability of the product casing.
The manufacturing of silica sol castings can properly raise the pouring temperature during the manufacturing process to minimize the pouring ladle and can appropriately set the pouring system, effectively preventing the entrainment of pouring air to some extent, which is more conducive to the discharge of air in the mold cavity. the distance between the pouring cup and the nozzle.