小物遠心鋳鋼用鋳込み樋の形状決定と鋳込み速度に関する一考察

抄録

  In the case of horizontal centrifugal process, it is important for small steel castings, with higher melting point and solidification than rate iron castings, that the determination of pouring rate in the practical operation.
  The pouring rate relates to the factors, inner diameter of castings, pouring weight and temperature, nose shape and inclination degree of trough.
  In this report, the nose shape and inclination degree of the trough is decided from the study on the mutual relation of pouring weight, inner diameter of castings and pouring time. And the results are follows:
  (1) Inclined degree of pouring trough (θ) is found suitable between 20°∼25°.
  (2) The better trough cross section is found to be round independently with the size of casting inner diameter.
  (3) The curve of pouring rate is given by exponential function, Ƭ=C·Wⁿ and it changes with the pouring weight.
  Moreover, author confirmed that these results are sufficiently utilized in practical operation.