Method and device for examining the wear and friction properties of surface materials exposed to sliding friction
AssigneeSKF Industrial Trading and Development Company, B.V.
InventorsRobert J. Smalley, Maarten Noordman
Life of this patent
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Abstract
Method for examining the sliding friction between exposed surfaces of different combinations of materials, characterized by the fact that a first test piece of a first type of material and a second test piece of a second type of material are moved against one another over a certain distance and under a certain load while a lubricant is applied between the exposed surfaces, whereby the required energy is measured and this step is subsequently repeated a number of times at various bulk temperatures of the lubricant, following which the measured energy consumption is plotted on a graph as a function of the bulk temperature of the lubricant.
Claims9
Device for examining the sliding friction between exposed surfaces for different combinations of materials, characterized by a holder for a first test piece of a first material, a holder for a second test piece of a second material, driving means for moving the first and second pieces with regard to one another, means for loading the first and second test pieces with regard to one another, means for measuring the energy needed for the relative displacement between the first and the second test pieces, means for supplying a lubricant to the exposed surfaces of the first and second test pieces, and means for heating the lubricant and keeping it at a certain temperature.
Device for examining the sliding friction between exposed surfaces for different combinations of materials, characterized by a first holding means for a first test piece of a first material, a second holding means for a second test piece of a second material, driving means for moving the first and second pieces with regard to one another, means for loading the first and second test pieces with regard to one another, means for measuring the energy needed for the relative displacement between the first and the second test pieces, means for supplying a lubricant to the exposed surfaces of the first and second test pieces, and means for heating the lubricant and keeping it at a certain temperature, the first test piece comprising an eccentric means, said second holding means for holding the second test piece movably against the first test piece and said second holding means holding said second test piece against an edge of the first test piece.
Dependencies are inferred from the claim text.