Effect of Sliding Velocity on Tribological Performance of Metalworking Fluids in Deep Drawing
Keywords:
Deep drawing, Metalworking fluids, Sliding velocityAbstract
This research studied the effect of sliding velocity of sheet metal on the tribological performance of metalworking fluids by using the strip drawing tribometer and wear evaluation. The considered sheet and die materials were JSH780R and SKD11, respectively. By pressing the mold material on the sheet metal using the pressure of the mold at 8000 N which is a static load test that operates at room temperature. The sheet samples were pressed between the dies under three types of lubricants: (1) chlorine additive oil, (2) mineral base oil, and (3) chlorine-free. The samples were also pressed between the dies and sliding at 10 mm/min and 100 mm/min. The tribological performance of the tests were evaluated by the coefficient of friction (COF) and die wear. The tribology test results showed that chlorine additive oil was not affected by the sliding velocity. The COF values and die wear of both mineral base and chlorine-free oils were reduced when the sliding velocity increased.
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