Flowing Capacity of Hypereutectic Cast Iron.

Hypereutectic alloy cast irons were melted in the induction furnace or the cupola, inoculated to different degrees, and cast at 1440 and 1400 C in green sand molds into spirals of different cross section. The results are interpreted to show that flowing capacity reaches a maximum at a carbon equivalent of about 1. 07%. In spirals cast at 1440 C, of irons containing 3. 4 to 3. 6% C, flowing capacity decreased with increasing Si; with 3. 6 to 3. 8% C, the opposite was true. Decreasing casting temperatures and increasing inoculation increased piping.