Preparation method of metal drawing lubricant

Abstract

The invention discloses a preparation method of a metal drawing lubricant, and belongs to the technical field of lubricant preparation. The method comprises the steps of preparing lubricating oil base oil from ricinic acid methyl ester as a raw material, stripping molybdenum disulfide crystal through an ultrasonic assisted stripping method to prepare graphene structure-like molybdenum disulfide; compounding with a carbon nanotube dispersion liquid, doping carbon nanotubes into the graphene structure-like molybdenum disulfide to prepare the dispersion liquid which is high in stability, high in radiating capability and good in dispersibility; and finally stirring the lubricating oil base oil, polyvinyl alcohol and deionized water and mixing the mixture with the carbon-doped graphene structure-like molybdenum disulfide to obtain the metal drawing lubricant. A low-shear stress film is formed on the surface of a friction pair by using the prepared graphene structure-like molybdenum disulfide, so that the friction coefficient is reduced and the low-shear stress film plays filling and repairing roles on the friction surface, meanwhile, the conditions of breakage of a metal wire and generation of an offensive odor are not easily generated in the using process, and the low-shear stress film is free of a harm to the environment and a human body and has a wide application prospect.

Description

technical field [0001] The invention discloses a preparation method of a lubricant for metal wire drawing, which belongs to the technical field of lubricant preparation. Background technique [0002] In wire and cable enterprises, the use of multi-mode sliding wire drawing machines is becoming more and more widespread. During wire drawing, the lubricating liquid (or emulsion) is sprayed on the wire drawing die by a combination of spraying and immersion lubrication, and the wire drawing drum and the wire on the drum are soaked in the wire drawing lubricating liquid, thereby To reduce friction, reduce wear and cooling cleaning. [0003] The role of the lubricant is to form a lubricating film between the drawn metal and the wall of the wire drawing die, reduce the friction between the interfaces, prevent the metal from bonding on the die wall due to heat, and reduce the energy during drawing. Reduce consumption and temperature rise, prolong the service life of the mold, ensur...

AI Technical Summary

Problems solved by technology

[0005] The technical problems mainly solved by the present invention are: the existing wire drawing lubricants have poor lubricating performance, slow heat dissipation, and are prone to breakage of metal wires during use, and at the same time cause oil evaporation to produce unpleasant smells, which endanger the environment and the environment. Deficiencies in human health, a preparation method of a metal wire drawing lubricant is provided. The invention uses methyl ricinoleate as a raw material, and undergoes ring-opening reaction with isooctyl alcohol and a catalyst after epoxidation to obtain lubricating oil Molybdenum disulfide crystals are peeled off in a surfactant aqueous solution by ultrasonic-assisted stripping method to obtain molybdenum disulfide with graphene-like structure, and compounded with carbon nanotube dispersion liquid, so that carbon nanotubes can be doped into graphite-like Molybdenum disulfide with ene structure to obtain a dispersion liquid with high stability, high heat dissipation and good dispersibility. Finally, mix lubricating base oil, polyvinyl alcohol, deionized water, etc. with carbon-doped graphene-like structure The metal wire drawing lubricant is obtained by mixing the molybdenum sulfide dispersion liquid. The metal wire drawing lubricant prepared by the present invention has good lubrication and cooling and heat dissipation properties, and the prepared graphene-like structure molybdenum disulfide forms low shear stress on the surface of the friction pair. In order to reduce the friction coefficient, it can fill and repair the friction surface. At the same time, it is not easy to break the metal wire and produce unpleasant smell during use. It is not harmful to the environment and human body, and has broad application prospects.