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A kind of cutting oil for titanium alloy processing and preparation method thereof

A cutting oil, titanium alloy technology, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of aggravated rake face wear, machined surface quality damage, high temperature activity and other problems, achieve good chemical protection, improved tool life, The effect of good lubrication

Active Publication Date: 2021-09-21
中科孚迪科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (3) Easy to produce work hardening phenomenon
Because the temperature in the cutting process of titanium alloy is high, and the high temperature activity of titanium alloy itself is strong, it is easy to chemically react with elements in the air to form compounds such as titanium nitride and titanium oxide, resulting in work hardening on the surface of the workpiece, making The surface hardness of titanium alloy is improved, but at the same time its plasticity is reduced, which reduces the fatigue strength of the workpiece surface
[0008] (4) The tool is easy to wear
On the one hand, due to the high cutting temperature of titanium alloy, the cutting edge is easy to soften, and the contact area between the knife and the chip is small, the contact stress is large, and the deformation coefficient of the chip is small. These factors aggravate the wear of the rake face
On the other hand, during the cutting process, the machined surface will undergo relatively large elastic recovery, and the workpiece is prone to vibration when the cutting force is large. These factors will increase the wear of the tool flank and cause certain damage to the machined surface quality degree of damage
[0009] (5) Easy to produce obvious sticking knife phenomenon
Because the thermal conductivity of titanium alloy itself is low, the temperature in the cutting zone is high during processing, and the chemical activity of titanium alloy is strong at high temperature, coupled with factors such as the elastic recovery of the workpiece, it is easy to produce obvious sticking in the process of titanium alloy processing. knife phenomenon

Method used

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  • A kind of cutting oil for titanium alloy processing and preparation method thereof
  • A kind of cutting oil for titanium alloy processing and preparation method thereof
  • A kind of cutting oil for titanium alloy processing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Turn on the stainless steel blending kettle for pulse stirring, raise the temperature to a temperature range of 60-70°C, add 67.3% base oil 150N, 60N (among them, the mass ratio of 150N to 60N is 1:1), and then add 10% of the surface to be modified by organic matter Oxygenated silica nanoparticles, 10% oxidized rapeseed oil and isooctyl oleate (the mass ratio of oxidized rapeseed oil to isooctyl oleate is 2:1), 5% diethylene glycol monobutyl ether, 0.2% Tolyl benzotriazole, 5% dodecenyl succinic acid, 1% 4,4-dioctyl diphenylamine, 1% inactive vulcanized extreme pressure antiwear agent, 0.5% molecular weight is 15000 polyisobutylene, after all the additives are added, keep stirring at 70°C for 1 hour, wait for all the additives to dissolve evenly, and test the main performance indicators to pass the test, then pack it out of the kettle.

Embodiment 2

[0055] Turn on the stainless steel mixing kettle for pulse stirring, raise the temperature to a temperature range of 60-70°C, add 53.7% base oil 60N, then add 10% of silica nanoparticles whose surface has been modified with organic matter, 15% of vegetable oil and trimethylol propane oleic acid monoester (mass ratio of vegetable oil to trimethylolpropane oleic acid monoester is 3:1), 7% diethylene glycol monobutyl ether, 0.3% methyl benzotriazole, 10 % of dodecenyl succinic acid, 1.5% of 4,4-dioctyl diphenylamine, 1% of inactive vulcanized extreme pressure antiwear agent, 1.5% of polyacrylate with a molecular weight of 15000, after all additives are added After completion, keep stirring at 70°C for 1 hour. After all the additives are dissolved evenly and the main performance indicators pass the test, they are taken out of the kettle for packaging.

Embodiment 3

[0057] Turn on the stainless steel mixing tank for pulse stirring, raise the temperature to 60-70°C, add 49.55% base oil 150N, add 15% silica nanoparticles whose surface has been modified with organic matter, 12% isooctyl oleate, 10% diethylene glycol monobutyl ether, 0.25% methyl benzotriazole, 8% dinonyl naphthalene sulfonate, 1.2% 4,4-dioctyl diphenylamine and 2,4- Dimethyl-6-tert-butylphenol (mass ratio 1:3), 2% molybdenum dialkyldithiocarbamate, 2% methacrylate and styrene copolymer with a molecular weight of 10,000 and all additives After the addition is completed, keep stirring at 70°C for 1 hour. After all the additives are dissolved evenly and the main performance indicators pass the test, they are taken out of the kettle for packaging.

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Abstract

The invention discloses a cutting oil for titanium alloy processing and a preparation method thereof. The method comprises the following steps: weighing the following components according to mass percentage, nano lubricant 10-20%, oily additive 10-15%, extreme pressure anti-wear agent 1-2%, coupling agent 5-10%, metal deactivation 0.2‑0.3% antirust agent, 5‑10% antirust agent, 1‑1.5% antioxidant, 0.5‑2% antifogging agent, and the balance is base oil; add the above raw materials into the blending kettle at one time, start pulse stirring, Simultaneously raise the temperature to 60-80°C and keep stirring for 1 hour. After all the additives are dissolved evenly, they are taken out of the kettle for detection. Due to the addition of nano inorganic particles to the cutting oil provided by the present invention, in the case of boundary lubrication, the spherical nanoparticles can provide effective rolling friction, and in the higher cutting temperature region, the extreme pressure antiwear agent can be combined with the titanium alloy surface A chemical reaction occurs, which plays a good role in chemical protection. The effective combination of the two friction methods under different temperature gradients can increase the tool life by about 34.6%‑46.2%.

Description

technical field [0001] The invention relates to the technical field of lubricating oil for metal processing, in particular to a cutting oil for processing titanium alloys and a preparation method thereof. Background technique [0002] Titanium alloy has a low density (usually 4.5g / cm 3 , about 3 / 5 of steel), high strength (about 3.5 times that of steel, 1.3 times that of aluminum alloy, and 1.7 times that of magnesium alloy), good corrosion resistance (mainly depends on the existence of an oxide film on its surface, can be Seawater, moisture, nitric acid, sulfuric acid are not corroded), high heat resistance (still maintains good mechanics at 500°C), good low temperature performance (still has certain plasticity at a temperature of 20K), and biocompatibility, etc. . Due to its excellent properties, titanium alloys are widely used in aerospace, especially in military aircraft. For example, in the US F22 fighter jet, the amount of titanium alloy accounts for 41% of the tota...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/04C10N30/06C10N30/08C10N40/22
CPCC10M169/044C10M2201/14C10M2203/1006C10M2205/026C10M2205/04C10M2207/026C10M2207/046C10M2207/127C10M2207/40C10M2215/064C10M2215/223C10M2219/044C10M2219/068C10M2209/08
Inventor 祁有丽祁有凯南振华
Owner 中科孚迪科技发展有限公司
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