Preparation method of micro-emulsified cutting fluid for aero-engine aluminum alloy processing

An aero-engine and aluminum alloy technology, applied in the petroleum industry, lubricating compositions, etc., can solve problems such as poor cooling performance, shortened tool life, carbonization failure, etc., to improve lubricity and cooling performance, improve cooling performance, and The effect of lubricity

Inactive Publication Date: 2021-11-16
四川欧力泰尔新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Molybdenum disulfide is added to the cutting fluid to make it have better lubricity, but the study found that molybdenum disulfide is easily carbonized and invalidated at high temperature, which makes the lubricity of the cutting fluid lose at high temperature and reduces the use of tools Life and cutting effect on workpiece surface
In addition, the cutting fluid is an oil-based cutting fluid, which has poor cooling performance, and the heat on the tool and workpiece is not easy to dissipate during cutting, which requires the cutting tool to have high temperature resistance and greatly shortens the use of the tool. life
Therefore, it is a technical problem to be solved to invent a high-quality cutting fluid that solves the above-mentioned technical problems in view of the existing cutting fluid that is easy to lose its lubricity and self-cooling performance when it is used for cutting metals.

Method used

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  • Preparation method of micro-emulsified cutting fluid for aero-engine aluminum alloy processing

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Effect test

Embodiment 1

[0023] 1) Preparation of sulfonated graphene: (1) pre-reduced graphene oxide: take 750mg graphene oxide and dissolve it in deionized water, and ultrasonically disperse it for 2h to form a brown dispersion solution; adjust its pH value to 9 with sodium carbonate solution, and Slowly add sodium borohydride to it at 60°C and stir for 1 hour; then partially reduce graphene oxide and redisperse it in deionized water, centrifuge and wash with deionized water for 5 times to make the pH value neutral 7; (2) sulfonation 1.38g ammonium sulfonate and 0.54g lithium nitrate were dissolved in hydrochloric acid solution, and the mixture was slowly added into the dispersion solution with pH 7 in step (1), and magnetically stirred for 6h under ice-bath conditions; the product was again dispersed in deionized Disperse in water, then centrifuge and wash with deionized water three times; (3) Hydrazine hydrate reduces the remaining oxygen functional groups: add hydrazine hydrate to the dispersion i...

Embodiment 2

[0030] 1) Preparation of sulfonated graphene: (1) pre-reduced graphene oxide: take 750mg graphene oxide and dissolve it in deionized water, and ultrasonically disperse it for 3h to form a brown dispersion solution; adjust its pH value to 9.4 with sodium carbonate solution, and Slowly add sodium borohydride to it at 80°C and stir for 2 hours; then partially reduce graphene oxide and redisperse it in deionized water, centrifuge and wash with deionized water three times to make the pH value neutral 7; (2) sulfonation : 0.69g ammonium sulfonate and 0.27g potassium nitrate are dissolved in the hydrochloric acid solution, and the mixture is slowly added into the dispersion solution with a pH of 7 in step (1), and magnetically stirred for 5h under ice-bath conditions; the product is again dispersed in a deionized Disperse in water, then centrifuge and wash with deionized water three times; (3) Hydrazine hydrate reduces the remaining oxygen functional groups: add hydrazine hydrate to t...

Embodiment 3

[0037] 1) Preparation of sulfonated graphene: (1) pre-reduced graphene oxide: take 750mg graphene oxide and dissolve it in deionized water, and ultrasonically disperse it for 3h to form a brown dispersion solution; adjust its pH value to 9 with lithium carbonate solution, and Slowly add sodium borohydride to it at 80°C and stir for 1 hour; then partially reduce graphene oxide and redisperse it in deionized water, centrifuge and wash with deionized water three times to make the pH value neutral 7; (2) sulfonation : 2.76g ammonium sulfonate and 1.08g lithium nitrate are dissolved in the hydrochloric acid solution, and the mixture is slowly added into the dispersion solution with a pH of 7 in step (1), and magnetically stirred for 5h under ice-bath conditions; the product is again dispersed in a deionized Disperse in water, then centrifuge and wash with deionized water three times; (3) Hydrazine hydrate reduces the remaining oxygen functional groups: add hydrazine hydrate to the d...

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Abstract

The invention provides a preparation method of a micro-emulsified cutting fluid for aero-engine aluminum alloy processing. The preparation method comprises the following steps of: pre-reducing graphene oxide, sulfonating, and reducing residual oxygen functional groups by hydrazine hydrate to obtain sulfonated graphene; preparing dispersion liquid from the sulfonated graphene; adding molybdenum salt and powdered sulfur into a mixed solution of hydrazine hydrate and N, N-dimethylformamide, adding the mixed solution into the sulfonated graphene dispersion liquid, adding hydrogen peroxide, centrifuging, washing, and freeze-drying to obtain sulfonated graphene / MoS2 nanocages; ball-milling the nanocages, putting the ball-milled nanocages into ethylene glycol, then adding dimethyl sulfate and sodium dodecyl sulfate, and carrying out stirring and ultrasonic treatment; taking biodegradable base oil, and adding an emulsifier, triethanolamine, polyethylene wax, a compound surfactant, an anti-rust agent and a defoaming agent into the biodegradable base oil to obtain an oil-based mixed solution; taking deionized water, and adding the sulfonated graphene / MoS2 nanocages, glycerol and propylene glycol into the deionized water to obtain a water-based mixed solution; and mixing the oil-based mixed solution with the water-based mixed solution, and stirring until the liquid is uniform and transparent, thereby obtaining micro-emulsified cutting fluid for aero-engine aluminum alloy processing.

Description

technical field [0001] The invention relates to the technical field of cutting fluids, in particular to a method for preparing microemulsion cutting fluids for machining aluminum alloys of aero-engines. Background technique [0002] Cutting is the most important processing method in mechanical manufacturing. During the cutting process, it is necessary to add an appropriate amount of cutting fluid between the tool and the workpiece to perform various functions such as cooling, lubrication, rust prevention, and cleaning. Especially for cutting fluid used in metal cutting, its cooling performance and lubricating performance determine the service life of the tool and the cutting effect of the workpiece surface. [0003] In the 1950s, fully synthetic metalworking fluids appeared on the market for the first time. Compared with emulsion fluids, fully synthetic fluids have better cooling and rust protection in machining, as well as better hard water stability and biological stabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M173/00C10N30/06
CPCC10M173/00C10M2201/066C10M2201/041C10M2219/042C10M2219/044C10M2207/40C10M2209/103C10M2207/022C10N2030/06
Inventor 谢兴存陈郁明
Owner 四川欧力泰尔新材料有限公司
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