鋳鉄粉の粉末圧延による含黒鉛薄鉄板の作成

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This paper describes trials which prepare iron sheets containing large amount of graphite by powder rolling. A powder rolling machine has two φ160mm chilled rolls arranged horizontally and a powder feeding hopper with a controlling gate to feed constant amount of powder. Reduced iron powder-graphite mixtures and cast iron powder-graphite mixtures were rolled, and the rolled sheets were sintered at 1393K for 30min. The experimental results are as follows. -Cast iron powder could be mixed with graphite more homogeneously than reduced iron powder with graphite. -Cast iron powder-graphite mixtures containing 2-8%C could be rolled into sheets of 0.4-0.6mm thickness, while reduced iron powder-graphite mixtures containing 2-8%C could not be rolled into sound sheets. -The sintered sheets containing 2-8%C have tensile strength of 500-80 MPa. and it seems to be enough for wear-resistance and sound-absorption application of the materials.
社団法人粉体粉末冶金協会の論文