Composition of water-soluble metalworking fluid using distillation residue generated in production of biodiesel

Abstract

A composition of a water-soluble metalworking fluid used in metal machining is formed by adding 5 to 70 wt % additive to 5 to 95 wt % distillation residues that is generated in production of biodiesel and used as lubricating base oil, and 0 to 70 wt % ion exchange water.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims the benefit of Korean Patent Application No. 10-2007-0003692, filed on Jan. 12, 2007, the disclosure of which is hereby incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a water-soluble metalworking fluid used in metal machining, and more particularly, to a composition of a water-soluble metalworking fluid produced by adding 5 to 70 wt % of additives to 20 to 95 wt % of distillation residues that is generated in production of biodiesel and used as lubricating base oil, and 0 to 40 wt % of ion exchange water.[0004]2. Description of the Related Art[0005]Metalworking fluids are fluids which are used to assist metal machining operations. Traditional metal machining requires a machine tool, a cutting tool, a worked metal, and a machining fluid. Metalworking fluids were first used to increase the lifespan of an instrument for m...

AI Technical Summary

Benefits of technology

[0029]An embodiment of the invention provides a composition of a water-soluble metalworking fluid which uses a distillation residue generated in production of biodiesel as lubricating oil, and is mixed with other additives. The additives include a surfactant, a lubricating additive, a metal corrosion

Problems solved by technology

The original metalworking fluids were mainly formed of base oil refined from crude oil, and contained a large amount of polyaromatic hydrocarbons (PAHs) that are now known to be carcinogens due to non-development of refinement techniques.

Workers can be exposed to these metalworking fluids via many forms and paths while in use, and the fluids may be a cause of cancer, non-malignant respiratory disease, dermatosis, microbial disease, etc. for the workers.

However, water rusts metal, and thus has less wettability and lubrication than oil.

The water-soluble metalworking fluids are nonflammable like water and non-sticky, so it is preferred by workers due to a clean work environment, but it is corruptible.

However, although such advantages can be expected, biodiesel has several problems in substituting for conventional gasoline and volatile oils.

Although biodiesel has to be mixed in a high ratio to reduce toxic chemicals in exhaust gases from vehicles, it may break down engines due to corrosion, and become denatured in long-term storage.

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