The surface of centrifugal castings will have a layer of coating to achieve the best condition for the workpiece. But how many people know about the operation process of coating for centrifugal castings? The following is the basic content related to it.
When casting workpieces, it is necessary to first bake the mold to remove water vapor and prevent explosion splashing by increasing the mold temperature. Baking can be done using methods such as a blowtorch or a red iron block, and this is also a preparation for the drying of the coating.
The next steps to be taken are to clean the mold, advance the asbestos pad, secure and lock the front cover, and place the pouring nozzle. Pour the paint into the mold with a paint tube, and after the paint dries into a shell, it can be poured. However, it should be noted that the paint tube is prone to collision with the rotating front end cover, which can cause accidents. Therefore, while extracting the paint tube, start the machine to rotate to ensure safety.
After pouring, in order to obtain a refined grain structure, appropriate water spray cooling can be used, but attention should be paid to temperature and time control to avoid affecting the thickness of the coating.