The Viscometer in Works Practice

JSGT_1939_V23_T082_T107

A rotating cylinder viscometer has been applied to works problems, and an example is given of its use in the development of a glass of increased chemical resistance. Calculated values are given for the effect of various oxides on the viscosity of glasses into which they are introduced. A discussion is given of the effect of the viscosity-temperature relationship on the "setting rate" of glasses. Some measurements on opal glasses are also reported. The viscometer has been calibrated by reference to its physical dimensions. The results given are absolute values based on this calibration.

R. L. Crook, B.A.