Smokeless forging lubricant

Details Smokeless forging lubricant Smokeless forging lubricant

1974-08-22

1976-01-06

Gantz, Delbert E.

Compositions

Electrolytes for electrical devices

72 42, 252 25, 252 495, C10M 110, C10M 302, C10M 502, C10M 702

Patent

active

039310205

ABSTRACT:
A lubricant for high temperature metal forging applications comprises a water soluble inorganic salt whose melting point is below the metal working temperature, in admixture with an inorganic salt which decomposes to a gas at temperature below the metal working temperature, and one or more particulate lubricants. The low melting point inorganic salt is sodium nitrite and the decomposible salt is sodium bicarbonate. The particulate lubricant material may be graphite and/or zinc oxide pigment powder. Water may be added to the mixture and, in such case, surfactants and thickening agents are added to the formulation. Minor amounts of other ingredients such as an anti-oxidant, may also be added to the water-based embodiments.

REFERENCES:
patent: 3637498 (1972-01-01), Sawyer
patent: 3843529 (1974-10-01), Bertrand

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