| 摘要 |
STRENGTHENED GRAPHITE-METAL THREADED CONNECTION The threaded connection between a graphite shaft and a metal shaft, such as is used to drive a rotating nozzle in the refining of aluminum, is strengthened by coating the graphite surface that contact the flange portion of the metal shaft prior to the fastening of said shafts together. The coating comprises solid material bonded to the graphite surface to form a hard, adherent coating, deposited by coating said graphite surface with a solution or colloidal dispersion of said material and drying said solution or colloidal dispersion to leave said solid material bonded to the graphite surface. The coating of said graphite shaft serves to greatly strengthen the threaded connection and the ability of said connection to transmit driving torque from the metal shaft to the graphite shaft. D-15170-1 |
