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High-temperature-resistant ionic liquid cutting fluid with lubrication self-enhancement function

An ionic liquid and enhanced function technology, applied in the field of metal cutting, can solve the problems of high viscosity of cutting oil, high surface tension, poor penetration performance, etc., and achieve excellent lubricating performance, promote lubrication, and good lubricating performance

Pending Publication Date: 2022-06-24
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional cutting oils have high viscosity, high molecular weight, and high surface tension, and actually have poor penetration in the cutting area when used

Method used

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  • High-temperature-resistant ionic liquid cutting fluid with lubrication self-enhancement function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Weigh 50 g of 1-methylimidazole into a three-necked flask, heat it in a water bath at 40°C, and slowly add 60 g of bromoethane to it with a constant pressure dropping funnel under the protection of N2, stir magnetically, and reflux for 7 hours. After the reaction, the heating was stopped, and the solution was allowed to stand at room temperature for 6 h to obtain a white solid, which was dried in vacuo to obtain 1-ethyl-2,3-methylimidazolium bromide ([EMIM]Br).

[0027] Weigh 20g of [EMIM]Br into a 200mL single-neck flask, and weigh 15g of KPF 4 Dissolve in distilled water, slowly add KPF4 solution dropwise to a constant pressure dropping funnel, stir magnetically at 60°C for 10h, stand to cool, and precipitate light yellow [EMIm]PF 4 ionic liquid.

[0028] figure 1 Shown are the thermogravimetric and infrared spectroscopic analyses of the synthesized ionic liquids, given by figure 1 (a) Visible [EMIm]PF 4 The thermal decomposition temperature is around 500°C.

Embodiment 2

[0030] And compared with ordinary vegetable oil (ACCU-LUBE LB2000) and mineral oil (Mobil 1535) to carry out [EMIm]PF 4 Turning test of ionic liquids. The turning test was carried out on a CAK6136 lathe, GCr15 bearing steel was used as the workpiece, the cutting force was measured by Kistler 9129A dynamometer, the resultant force of the three-direction cutting force was used as the cutting force evaluation standard, and the RX4006D thermometer was used to measure the temperature of the cutting area. . Using Mitsubishi SNMG120404-MA UE6110 blade for processing, the workpiece size is Ф60mm×350mm, the spindle speed is 1000r / min, the amount of back cutting is 0.4mm, the cutting length is 150mm, the feed rate is f=0.08mm / r, and the cutting time is T=15min. The flow rate of MQL is 15ml / h and the air pressure is 2.0Mpa.

[0031] The variation trend of the measured cutting force and cutting temperature with the spindle speed is as follows: figure 2 shown. It can be seen that wit...

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Abstract

The invention belongs to the technical field of metal cutting processing, and discloses a high-temperature-resistant ionic liquid cutting fluid with a lubrication self-enhancement function in a cutting processing area, the ionic liquid cutting fluid is composed of imidazole cations and boron fluoride anions, the preparation method comprises the following steps: carrying out quaternization reaction on proper amine and alkyl halide to prepare halogenated salt containing target cations, and carrying out replacement reaction on the halogenated salt, silver of the target anions, alkali metal and ammonium salt to prepare the ionic liquid. Compared with common vegetable oil and mineral oil cutting fluid, the cutting fluid can resist the high temperature of 500 DEG C or above, the anion and cation structures of the cutting fluid have electrical conductivity, and efficient and rapid infiltration and adsorption of the cutting fluid can be promoted through friction electron emission and a self-generated electric field in a cutting area. The cutting fluid has a lubrication self-enhancement function, lubrication of the cutting fluid can be promoted under harsh processing conditions, and the higher the cutting speed is within a certain range, the more sufficient and stable the formed lubricating film is. The lubricating grease can be used for minimum quantity lubrication (MQL) during high-speed cutting machining.

Description

technical field [0001] The invention belongs to the technical field of metal cutting processing, and relates to a high temperature resistant ionic liquid cutting fluid with lubricating and self-enhancing function in a cutting processing area and a preparation method thereof. Specifically, it relates to a high-temperature resistant ionic liquid cutting fluid that can be used for high-speed cutting and a preparation method thereof. Background technique [0002] At present, more than 90% of the parts in the machinery manufacturing industry are made by cutting. With the continuous development of cutting tools and material technology, the cutting speed continues to increase. It is necessary to continuously develop new cutting media to meet the needs of high-speed machining. At present, cutting fluid is required for lubrication and cooling in most cutting conditions to reduce cutting force, cutting temperature, improve tool life, workpiece quality, etc. The cost of cutting fluid a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M133/46C07D233/58C10N40/22C10N30/08C10N30/06
CPCC10M133/46C07D233/58C10M2215/224C10N2030/08C10N2030/06C10N2040/22
Inventor 关集俱陈奠宇徐正亚吴健李特高超杨兰玉
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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