Method for reducing wear of steel elements in sliding-rolling contact
AssigneeKelsan Technologies Corp.
InventorDon T. Eadie
Life of this patent
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Abstract
According to the invention there is provided a method of reducing wear of one or both of two steel elements having surfaces in sliding or sliding-rolling contact. The method involves applying an HPF friction control composition to one, or more than one contacting surface of one or both of the two steel elements. In a particular example, the HPF friction control composition comprises a rheological control agent, a lubricant, a friction modifier, and one, or more than one of a retentivity agent, an antioxidant, a consistency modifier, and a freezing point depressant.
Claims19
A method of controlling rail wear, rail car wheel wear, or both, comprising applying a high positive friction (HPF) composition to one or more than one contacting surface of one, or more than one rail, or one, or more than one rail car wheel, the one, or more than one rail, and the one, or more than one rail car wheel being in sliding or sliding-rolling contact, wherein the HPF composition comprises:
- (a) from about 30 to about 95 percent water;
- (b) from about 0.5 to about 50 percent of a rheological control agent;
- (c) from about 0.02 to about 40 weight percent of a lubricant, and
- (d) from about 0.5 to about 30 weight percent of a friction modifier, and one, or more than one of:
- (i) from about 0.5 to about 40 weight percent of a retentivity agent;
- (ii) from about 0.5 to about 2 weight percent of an antioxidant;
- (iii) from about 0.1 to about 20 weight percent of a consistency modifier, and
- (iv) from about 10 to about 30 weight percent of a freezing point depressant.
A method of reducing wear of one or both of two steel elements comprising applying a high positive friction (HPF) composition to one, or more than one surface of one or both of the two steel elements, the two steel elements being in sliding or sliding-rolling contact, wherein the HPF composition comprises:
- a) from about 30 to about 95 percent water;
- b) from about 0.5 to about 50 percent of a rheological control agent;
- c) from about 0.02 to about 40 weight percent of a lubricant, and
- d) from about 0.5 to about 30 weight percent of a friction modifier, and one, or more than one of:
- (i) from about 0.5 to about 40 weight percent of a retentivity agent;
- (ii) from about 0.5 to about 2 weight percent of an antioxidant;
- (iii) from about 0.1 to about 20 weight percent of a consistency modifier, and
- (iv) from about 10 to about 30 weight percent of a freezing point depressant.
Dependencies are inferred from the claim text.