ASTM D3342 Test Method for Dispersion Stability of New (Unused) Rolling Oil Dispersions in Water
3. Summary of Test Method
3.1 The rolling oil is dispersed in a standard test water, in a standard container, under standard conditions of time, agitation, and concentration. When the agitation is stopped, the resulting decrease in oil concentration at a specified point near the bottom of the container is measured at certain time intervals and plotted.
4. Significance and Use
4.1 Each steel rolling mill and operation is particular as to the degree of stability of dispersion required to effect maximum efficiency of lubrication and cooling. This test method is designed to differentiate between coolants for this use. A similar situation is encountered with aluminum rolling mills, but significant differences in designated settling times be required outside the parameter of times used herein. Precision data have only been obtained relative to metastable dispersions for steel mill rolling oils.
