各種の耐熱鋳物について

抄録

  The authors made an investigation on the heat resisting properties of castings for high temperature service, which are manufactured and applied as steel plant castings in our steel works. Resistance to growth and scaling and tensile properties at elevated temperatures of the following 3 groups castings were studied.
  1 st groups; low Cr, low Ni-Cr, high Si-Al and ordinary ductile cast iron.
  2 nd groups; high Si ductile and low Cu cast iron, low Cr and low Al-Cr cast iron.
  3 rd groups; alumerized (hot dip aluminized) or calorized low Cr and low Al-Cr cast iron.
  As the result, maximum allowable temperature was found to be a little higher than 1000°C for high Si ductile cast iron, 1000°C for high Al-Si and annealed alumerized or calorized low Cr cast iron, 950°C for high Si cast iron, 900°C for Al cast steel and ordinary ductile cast iron and 700°C for low Cr and low Ni-Cr cast iron.