THE EFFECT OF THE DISPERSION OF OILS IN AIR ON THE SEIZURE AND PITTING OF HARDENED STEEL

Abstract : There are now many modifications of various friction machines used for the study of the lubricating capacities of oils intended for operation in conditions of high contact loads. To a lesser degree these machines are used for the study of antipitting properties of oils. The known friction machines make possible broad changes in oil testing conditions. However, no machine makes it possible to imitate the input of oil to friction zones as drops in an air medium or as fog. The authors have developed a test method to meet such a need. The basis of the test machine used is a four-ball friction unit installed in a reducer. The dispersion of oils due to ease of oxygen access to friction zones leads to an improvement of the anti-seizing characteristics of the oil. Dispersion of oils which do not contain anti-seizing admixtures has a negative effect on their anti-seizing properties. Other results are presented and discussed. (Author)