Centrifugal casting is a casting method in which molten metal is poured into a high-speed rotating mold and cooled and solidified under the action of centrifugal force. The rolls casted by centrifugal casting have the following characteristics:
1. Less inclusions in castings
2. Low porosity
3. Dense metal structure
4. The hardness drops slowly
5. Can cast double, multi-layer rolls
6. Easy to increase the metal segregation
Rolls made by centrifugal casting, the working layer or working layer and intermediate layer are firstly formed under the action of centrifugal force, and then the core material is statically casted.
Technical points of centrifugal casting roll:
1. Obtain the working layer organization with good wear resistance and accident resistance ability.
2. Quality control of the bonding layer between the working layer and the core organization
3. Control of hardness drop of working layer
4. Spheroidization of core, improve comprehensive mechanical properties