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CN-121975568-A - Microemulsion cutting fluid for aluminum magnesium alloy highlight processing and preparation method thereof

CN121975568ACN 121975568 ACN121975568 ACN 121975568ACN-121975568-A

Abstract

The invention provides a microemulsion type cutting fluid for aluminum magnesium alloy processing and a preparation method thereof, wherein the microemulsion type cutting fluid is prepared from the following components, by weight, 20-40% of base oil, 5-15% of an emulsifying agent, 5-20% of a surfactant, 1-5% of a corrosion inhibitor, 1-10% of a pH regulator, 1-5% of a coupling agent, 5-15% of an antirust agent, 0.1-1% of a defoaming agent, 0.5-5% of a sterilizing preservative and 20-40% of water. The microemulsion type cutting fluid for the aluminum magnesium alloy highlight processing has the advantages of outstanding corrosion resistance, good rust prevention, lubrication and cooling effects, can ensure that an aluminum magnesium alloy processing workpiece has excellent surface quality, has no phenomena of blackening, whitening and rust, and can effectively prolong the service life of a metal processing cutter.

Inventors

  • CHEN JUN

Assignees

  • 湖南金化科技集团有限公司

Dates

Publication Date
20260505
Application Date
20260122

Claims (10)

  1. 1. The micro-emulsion cutting fluid for the aluminum magnesium alloy highlight processing is characterized by comprising, by weight, 20-40% of base oil, 5-15% of an emulsifying agent, 5-20% of a surfactant, 1-5% of a corrosion inhibitor, 1-10% of a pH regulator, 1-5% of a coupling agent, 5-15% of an antirust agent, 0.1-1% of a defoaming agent, 0.5-4% of a sterilizing preservative and 20-40% of water.
  2. 2. The micro-emulsion cutting fluid for the high-gloss processing of the aluminum magnesium alloy according to claim 1, wherein the cutting fluid comprises the following raw materials, by weight, 30% of base oil, 10% of an emulsifying agent, 15% of a surfactant, 3% of a corrosion inhibitor, 2% of a pH regulator, 2% of a coupling agent, 10% of an antirust agent, 0.5% of a defoaming agent, 2% of a sterilizing preservative and the balance of water.
  3. 3. The micro-emulsion cutting fluid for the highlight processing of aluminum magnesium alloy according to claim 1 or 2, wherein the base oil is one or more of secondary hydrogenated oil, naphthenic oil, modified vegetable oil and synthetic ester.
  4. 4. The micro-emulsion cutting fluid for the high-gloss processing of aluminum magnesium alloy according to claim 1 or 2, wherein the emulsifier is fatty alcohol polyoxyethylene ether or castor oil polyoxyethylene ether.
  5. 5. The micro-emulsion cutting fluid for the high-gloss processing of aluminum magnesium alloy according to claim 1 or 2, wherein the surfactant is a mixture of two or more of fatty alcohol polyoxyethylene ether carboxylate, dodecylbenzene sulfonate, oleic acid diethanolamide and tall oil diethanolamide.
  6. 6. The micro-emulsion cutting fluid for the highlight processing of aluminum magnesium alloy according to claim 1 or 2, wherein the corrosion inhibitor is a mixture of two or more of sodium benzotriazole, phosphate, HEDP-4 sodium and silicone.
  7. 7. The micro-emulsion cutting fluid for the highlight processing of aluminum magnesium alloy according to claim 1 or 2, wherein the pH regulator is any one of triethanolamine, triethanolamine metasilicate, diethanolamine and borax.
  8. 8. The micro-emulsion cutting fluid for the highlight processing of aluminum magnesium alloy according to claim 1 or 2, wherein the rust inhibitor is one or more of organic amine esters of polycarboxylic acid, diethanolamine borate oleate, triethanolamine borate and triazine polycarboxylic acid.
  9. 9. The micro-emulsion cutting fluid for the high-gloss processing of the aluminum magnesium alloy according to claim 1 or 2 is characterized in that the coupling agent is glycol, absolute ethyl alcohol or alkynol and derivatives thereof, the defoaming agent is an organosilicon compound emulsion, and the sterilizing preservative is BK or MBM.
  10. 10. A method for preparing the micro-emulsion cutting fluid for the highlight processing of the aluminum-magnesium alloy according to claim 1 or 2, which is characterized by comprising the following processing steps: s1, adding water into a first reaction kettle, starting stirring, sequentially adding a pH regulator, a surfactant, a corrosion inhibitor and an antirust agent, and continuously stirring for 30 minutes until the added materials are completely dissolved for standby, wherein the water is a water phase; S2, respectively adding the base oil into a second reaction kettle, sequentially adding the emulsifier, the corrosion inhibitor, the rust inhibitor, the surfactant and the coupling agent under stirring, and continuing stirring for 30 minutes until the corresponding materials are uniformly stirred and fully dissolved, wherein the oil phase is an oil phase; s3, slowly adding the water phase into the oil phase while stirring, then sequentially adding the defoamer and the sterilization preservative, and continuously stirring for 1h, wherein the solution is sticky; And S4, finally standing for about 1h, and gradually enabling the solution to become transparent to obtain the microemulsion cutting fluid.

Description

Microemulsion cutting fluid for aluminum magnesium alloy highlight processing and preparation method thereof Technical Field The invention relates to the technical field of cutting fluids, in particular to a microemulsion cutting fluid for aluminum magnesium alloy highlight processing and a preparation method thereof. The microemulsion cutting fluid applies a multi-component compound metal corrosion inhibition technology, has excellent corrosion resistance and strong hard water resistance besides good lubricating property, cooling property, rust resistance and cleaning property which the cutting fluid should have, and can effectively solve the problems of oxidation blackening and corrosion discoloration in the processing process of the aluminum magnesium alloy, so that the surface quality of a workpiece after the aluminum magnesium alloy is processed is very bright and clean. Background The aluminum alloy has light weight, high strength, good electric conduction and thermal conduction, strong corrosion resistance, is widely used in automobile engines, speed changing devices, aviation equipment and other mechanical equipment, has low density, high specific strength and specific rigidity, strong damping, vibration reduction and noise reduction capabilities, excellent electromagnetic shielding performance and good radiation resistance, cutting processing and thermoforming properties, and is widely used in the fields of automobiles, motorcycles, bicycles, ships, aerospace, electronics, modern weapons and the like. Therefore, the demand of special cutting fluid for aluminum magnesium alloy processing is growing. The yield strength of the aluminum alloy is low, the adhesion phenomenon is easy to occur during processing, aluminum chips are easy to adhere to the surface of a cutter, and the surface smoothness of a machined part is seriously affected or built-up chips are formed. The aluminum alloy has high ductility, long strip cracks can be formed during processing, and cut scraps are not easy to be taken away. The aluminum alloy has active chemical properties, and the problems of oxidation and color loss of a workpiece, black spots and the like are easy to occur in the cutting process. Magnesium ions generated in the processing process of the magnesium alloy are easy to dissolve in water-soluble cutting fluid, the hardness of water is increased, the water-based cutting fluid is layered to break emulsion, magnesium alloy cutting powder is easy to deposit, the magnesium alloy is easy to corrode and change color in the processing process, and the problems of oxidation and combustion exist. Common corrosion of aluminum magnesium alloys includes electrochemical corrosion, stress cracking corrosion, pitting and filiform corrosion, galvanic corrosion, atmospheric corrosion, and the like. Besides two main chemical elements of high content of aluminum and magnesium, small amounts of impurity elements of zinc, copper, manganese, nickel, iron and the like are added into the aluminum-magnesium alloy processing material to realize different processing performances. Therefore, besides the lubricating, cooling, rust preventing and cleaning performances of the cutting fluid base, the aluminum magnesium alloy cutting fluid is mainly focused on corrosion inhibition of aluminum and magnesium elements, and also has the corrosion inhibition of nonferrous metals such as zinc, copper, manganese and the like and ferrous metals such as iron, nickel and the like, so that the corrosion resistance of the cutting fluid is enhanced. The single metal corrosion inhibitor in the cutting fluid formula has a good corrosion resistance effect on all the metal elements, and the compatibility of a plurality of proper metal corrosion inhibitors can be basically achieved. The microemulsion cutting fluid is an aqueous cutting fluid between emulsion and synthetic fluid, not only has the characteristics of good lubricity and rust resistance of the emulsion and good cleaning fluid of the synthetic fluid, but also overcomes the defects of easy deterioration and odor of the emulsion and poor lubricity of the synthetic fluid, and is about 30% of the market share of the cutting fluid at present, thus being the main research and development directions of the cutting fluid in the future. Therefore, it is necessary to develop a microemulsion cutting fluid which is suitable for the highlight processing of aluminum magnesium alloy and has excellent rust resistance, corrosion resistance, good hard water resistance and cleaning performance. Disclosure of Invention The invention aims at solving the technical problems of corrosion inhibition performance of two main chemical elements of aluminum and magnesium and impurity metal elements such as copper, zinc, manganese, iron, nickel and the like contained in the two chemical elements, and provides a microemulsion cutting fluid with excellent rust resistance, compression resistance, antifriction and corrosion resistance an