Effect of Lubricants on Compressive Deformation

概要

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The compression test was carried out with aluminium, copper, mild steel and stainless steel at 100, 200, 300, 400℃ and room temperature by making use of various kinds of lubricant. The results obtained are as follows : (1) It is necessary to take account of the elastic strain of the testing machine for the calculation of the friction coefficient from the load-strain curve of the compression testing. (2) In comparing both friction coefficients of rolling and of compression with each other, there is a tendency that the rolling shows a smaller friction coefficient than in the compression. This is considered to be due to the difference in the amount of friction length. (3) In the compression test with the mineral oils of various viscosities, the friction coefficient decreases with a slight increase of viscosity in the case of the viscosity below 100 Redwood sec at 50℃. However, at the viscosity above 100 Red Wood sec at 50℃, it is little changed by the variety of viscosity. (4) The order of lubricating effects is variant with the variety of lubricants, but the palm oil or beef-tallow oil shows a lower friction coefficient at room temperature and paste oil containing MoS_2, stearic acid sopa or paraffine chrolide shows good lubricating effects at high temperatures.
東北大学の論文