切削屑を添加した遠心鋳造法による高力黄銅パイプの開発

抄録

  High strength brass pipes for bearing cage were developed by a centrifugal casting method adding machining chips. Molten high strength brass was poured into rotating mold with or without machining chips, and pipe shaped casts were obtained. It was found that high strength brass pipe can successfully be developed by centrifugal casting using machining chips. It was also revealed that the grain size of casts was refined by the addition of machining chips, and hardness of casts was improved. Since some pores were found on the outer region of pipes fabricated with the machining chips, wear volume at the region was increased. The proposed casting method has some advantages, i.e., saves energy, refines grain size, and enhances hardness.