MOLTEN METAL SAMPLING DEVICE

摘要

A molten metal sampling device adapted for immersion in a heat of molten cast iron treated to form nodular iron on solidification to obtain a sample therefrom upon withdrawal and to generate a cooling curve thereof is disclosed. The device comprises a cylindrical cartridge having vertical walls and a base with a molten metal inlet opening in the vertical walls defining a sampling portion of the cartridge adapted to be filled with molten metal upon immersion to obtain the sample, and a thermocouple extending into the sampling portion having its thermal junction located at the approximate thermal center of the sample for measuring the change in temperature with time as the sample cools. The device is characterized by a critical relationship of design parameters, which are defined.