Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : September 08, 2024 - September 11, 2024
This paper describes the wear properties of high speed steel (SKH51) in the lubricant with molybdenum phosphate additive under high contact pressure conditions. In the wear tests, the reciprocating sliding tests were conducted, and molybdenum phosphate (MoP) and zinc dialkyldithiophosphate (ZnDTP) were used as additives. It was shown from the results that the wear depth per unit cutting volume in MoP was 1.7 times smaller than that in ZnDTP, and that the chemical reaction film was formed on the contact area after the test. Moreover, the wear depth in SKH51 was almost same as that in alloy tool steel (SKD11). This result suggest that the film formation derived from MoP is affected by the concentration of alloying element, in particular the group 6 in the periodic table.
