Hydraulic fluid
OwnerAndrew Holmes, Cameron Watsoninventors
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Abstract
A method for reducing total wear-induced weight loss during wear-inducing operation of equipment, the method comprises a) providing a hydraulic fluid comprising a combination of an amount of zinc dithiophosphate and a quantity of magnesium salicylate, wherein said quantity of magnesium salicylate is from 0.001 to at most 1% wt and said amount of zinc dithiophosphate is from 0.01 to 1% wt. and b) operating the equipment using the hydraulic fluid under wear-inducing conditions that reduce the weight of the equipment. The hydraulic fluid is effective to produce a first total weight loss that is less than a second total weight loss that would be observed using a second hydraulic fluid comprising a quantity of calcium salicylate in place of said quantity of magnesium salicylate.
Claims10
A method for reducing total wear-induced weight loss during wear-inducing operation of hydraulic equipment, the method comprising:
- a) providing a hydraulic fluid comprising a combination of an amount of zinc dithiophosphate and a quantity of magnesium salicylate, wherein said quantity of magnesium salicylate is from 0.001 to at most 1% wt and said amount of zinc dithiophosphate is from 0.01 to 1% wt.;
- and
- b) hydraulically operating the equipment using the hydraulic fluid under wear-inducing conditions that reduce the weight of the equipment, the combination being effective to produce a first total weight loss that is less than a second total weight loss that would be observed using a second hydraulic fluid comprising a quantity of calcium salicylate in place of said quantity of magnesium salicylate.
The method of claim 22 wherein the magnesium salicylate has a magnesium content of more than 550% of the stoichiometrically equivalent amount of magnesium based on the amount of total acid present.
Dependencies are inferred from the claim text.