Method of making an efficiency enhanced fluid pump or compressor
First Claim
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1. A method of making a high efficiency fluid pumping apparatus for gas compressors or liquid transfer, comprising:
- (a) forming aluminum alloy based relativelymovable parts that entrain and effect a pumping action of a fluid, said parts having surfaces that cyclically merge together and move apart to transfer fluid that places a shear load on said surfaces;
(b) rough machining said surfaces to a surface finish of 100-150 micro inches;
(c) preparing said rough machined surface by etching or phosphating;
(d) depositing a coating on said prepared surfaces by one of room temperature spraying, transfer film rolling and thermal spraying, said coating consisting of a mixture of resin and solid lubricant particles, said solid lubricant particles having an average particle size of 10 microns or less, said coating being deposited in a thickness to create a slight interference fit at said zone;
(e) slowly heating said deposited coating to the temperature level of 200°
F. and holding said heating for about 15 minutes followed by heating to 375°
-400°
F. for about 15 minutes; and
(f) operating said apparatus to abrade said coating to essentially a zero clearance at said zones.
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Abstract
A high efficiency pump having relatively-moving parts constituted of a light weight material and a coating on at least one of the parts to effect essentially zero clearance between the parts where they merge together. The coating is comprised of solid lubricants in a polymer resin matrix stable up to 700° F.
76 Citations
3 Claims
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1. A method of making a high efficiency fluid pumping apparatus for gas compressors or liquid transfer, comprising:
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(a) forming aluminum alloy based relativelymovable parts that entrain and effect a pumping action of a fluid, said parts having surfaces that cyclically merge together and move apart to transfer fluid that places a shear load on said surfaces; (b) rough machining said surfaces to a surface finish of 100-150 micro inches; (c) preparing said rough machined surface by etching or phosphating; (d) depositing a coating on said prepared surfaces by one of room temperature spraying, transfer film rolling and thermal spraying, said coating consisting of a mixture of resin and solid lubricant particles, said solid lubricant particles having an average particle size of 10 microns or less, said coating being deposited in a thickness to create a slight interference fit at said zone; (e) slowly heating said deposited coating to the temperature level of 200°
F. and holding said heating for about 15 minutes followed by heating to 375°
-400°
F. for about 15 minutes; and(f) operating said apparatus to abrade said coating to essentially a zero clearance at said zones. - View Dependent Claims (2, 3)
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Specification