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Microemulsion metal cutting fluid

A metal cutting fluid and microemulsion technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of high cost, environmental pollution, etc., and achieve the effects of long working life, good chip removal, and lubricating performance

Active Publication Date: 2014-11-26
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Before the 1980s, most of the metal cutting fluids used were low-viscosity engine oils or emulsified oily emulsions, which were costly and seriously polluted the environment.

Method used

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  • Microemulsion metal cutting fluid
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  • Microemulsion metal cutting fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The raw material formula is shown in Table 1;

[0056] Preparation:

[0057] Add fatty oil, emulsifier and co-emulsion agent into the reaction kettle in proportion, and stir evenly; mix the anti-wear and rust inhibitor, pH regulator and penetrating agent evenly in proportion, then add to the reaction kettle, heat up to 70-80°C, and stir Until a transparent and clear homogeneous liquid is formed; cool down to 30°C, add an appropriate amount of defoamer and anti-corrosion and antibacterial agent, stir evenly, and the obtained concentrated stock solution of cutting fluid is obtained.

[0058] Table 1 Microemulsion metal cutting fluid formula (mass fraction)

[0059]

[0060]

[0061] The concentrated stock solutions of microemulsion metal cutting fluids exemplified in Table 1 are all transparent and uniform brownish-yellow clear solutions, without layered phase transition and gel-like appearance, and have good storage stability. The working solution diluted 20 time...

Embodiment 2

[0063] Raw material formula composition: 100g olive oil, 25g Span 80, 225g Tween 80, 100g ethylene glycol, 150g AEO9, 150g lauric acid diethanolamide borate, 50g benzotriazole, 50g isooctyl phosphate, 10g aminomethylpropanol, 90g triethanolamine, 40g higher alcohol fatty acid ester complex defoamer and 10g methylene bismorpholine antiseptic antibacterial agent;

[0064] The preparation method of lauric acid diethanolamide borate: add lauric acid and diethanolamine at a molar ratio of 1:1 to a four-necked bottle with a stirrer, a condenser, and a thermometer, control the reaction temperature at 120-170°C, and stir for 2 ~4h for amidation reaction, using benzene as water-carrying agent to carry out vacuum distillation to remove water to obtain lauric acid diethanolamide; in a four-necked bottle with reflux condenser, oil-water separator, constant pressure dropping funnel and thermometer , respectively add lauric acid diethanolamide and boric acid at a molar ratio of 1:1 (boric a...

Embodiment 3

[0067] Raw material formula composition: 100g olive oil, 25g Span 80, 225g Tween 80, 100g ethylene glycol, 150g AEO9, 150g oleic acid diethanolamide borate, 50g benzotriazole, 50g isooctyl phosphate, 10g aminomethylpropanol, 90g triethanolamine, 40g higher alcohol fatty acid ester complex defoamer and 10g methylene bismorpholine antiseptic antibacterial agent;

[0068] The preparation method of oleic acid diethanolamide borate: add oleic acid and diethanolamine in a molar ratio of 1:1 into a four-necked bottle with a stirrer, condenser and thermometer, control the reaction temperature at 120-170°C, stir for 2 ~4h for amidation reaction, using benzene as water-carrying agent to carry out vacuum distillation to remove water to obtain oleic acid diethanolamide; in a four-necked bottle with reflux condenser, oil-water separator, constant pressure dropping funnel and thermometer , respectively add oleic acid diethanolamide and boric acid at a molar ratio of 1:1 (boric acid is groun...

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Abstract

The invention discloses a microemulsion metal cutting fluid which contains 1-20 wt% of fatty oil, 1-40 wt% of emulsifier, 5-40 wt% of co-emulsion, 5-30 wt% of wear and rust inhibitor, 1-20 wt% of penetrant, 5-30 wt% of pH regulator, 0.5-5 wt% of defoaming agent and 0.1-5 wt% anticorrosive bactericide. The microemulsion metal cutting fluid has excellent lubricating, antiwear, antirust, cleaning and cooling properties, and can be widely used in precise cutting work of ferrous metals and nonferrous metals.

Description

technical field [0001] The invention belongs to the technical field of metal processing, in particular, the invention relates to a microemulsion metal cutting fluid. Background technique [0002] Metal cutting fluid is a mixed lubricant used to lubricate and cool processing tools and processing parts during metal cutting. In addition to the lubricating and cooling functions, the cutting fluid is also required to have the following functions: 1) Corrosion resistance (rust / corrosion inhibition); 2) Cleanability; 3) Corrosion resistance; 4) Stability; 5) Defoaming properties; 6) Water quality adaptability; 7) Paint adaptability; 8) Safety (non-toxic / low toxicity); 9) Simple discharge and easy disposal of waste liquid (environmental protection). Metal cutting fluids include oil-based cutting fluids and water-based cutting fluids. Before the 1980s, most of the metal cutting fluids used were low-viscosity engine oils or emulsified oily emulsions, which were costly and seriously ...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10N40/22C10N30/12C10N30/06
Inventor 戴媛静张晨辉雒建斌吴璞
Owner TSINGHUA UNIV
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