| 摘要 |
The invention relates to a method for centrifugal casting, especially rotationally symmetrical castings, such as cylinder bushings made of at least two different iron alloys in the composite casting. Said method comprises the following steps introducing a first alloy (10) in a liquid state into a rotating ingot mould (14) in order to produce at least one outer casing (16) of the casting (18); leaving the thus produced casting to cool until the first alloy or until the alloy(s) used therein harden; introducing at least one other alloy (12) in a liquid state into a section of the inner surface while maintaining rotation of the ingot mould (14). The at least one other alloy (12) is melted in a defined area with the cooled material from the first or previously introduced alloy (16) and forms a cast iron with other material properties during solidification. |
