The invention relates to cutting fluid, in particular to semi-synthetic metal cutting fluid. The semi-synthetic metal cutting fluid is prepared by methyl levulinate, (R)-(+)-2,4-dyhydroxy-N-(3-hydroxypropyl)-3,3-dimethylbutyramide, 2-oxo-1,5-disoidum glutarate dihydrate, 4-piperidone-3-carboxylate hydrochloride and trimethylsilylketene. The semi-synthetic metal cutting fluid has good cooling, anticorrosion, antirust and lubricating performance, service life of a knife can be prolonged effectively, and excellent machining accuracy can be realized; the semi-synthetic metal cutting fluid can play a role in safely and reliably protecting and inhibiting corrosion of nonferrous metal like aluminum and steel and ferrous metal, so that time and cost for subsequent treatment can be omitted; the semi-synthetic metal cutting fluid is suitable for being widely popularized and applied in the field of the cutting fluid.

Semi-synthetic metal cutting fluid

The invention discloses a steel ring billet casting technique based on casting and rolling combined forming. The steel ring billet casting technique based on casting and rolling combined forming comprises the steps that firstly, a casting mold is manufactured by means of water glass sand, the casting mold is dried and sprayed with painting, casting raw materials of a steel ring are smelted and are poured into the casting mold, and normalizing, tempering and quenching-tempering heat treatment are conducted on a steel ring billet formed through pouring; secondly, the steel ring billet is cooled to the room temperature, and polishing and machining are conducted on the cooled steel ring billet; finally, the steel ring billet which can be directly used for casting and rolling combined forming is obtained. According to the steel ring billet cast according to the technique, the defects, such as shrinkage cavities, shrinkage porosity and segregation, appearing in the steel ring billet casting process can be reduced, grains are refined to the maximum extent, and the high-quality steel ring billet capable of meeting the requirement for the ring rolling performance is manufactured; due to the fact that the processes of the casting and rolling combined forming technique are simplified, the quality and performance of the ring rolling technique and a ring workpiece are guaranteed.

Steel ring billet casting technique based on casting and rolling combined forming

The invention discloses a water-based multifunctional cutting fluid with excellent lubricating and cooling performance and a preparation method thereof. The cutting fluid is characterized by being prepared from the following raw materials in parts by weight: 2 to 3 parts of polyethylene glycol monooleate, 4 to 6 parts of sulfonated castor oil, 1 to 2 parts of maleic anhydride, 2 to 3 parts of morpholine, 3 to 5 parts of ethylene glycol, 3 to 5 parts of methyl methacrylate, 8 to 10 parts of nano-graphite, 3 to 5 parts of OP-10, 2 to 3 parts of oleic acid, 5 to 7 parts of auxiliaries and 200 parts of deionized water. The cutting fluid is scientific and reasonable in formula, wherein the high-temperature resistance, corrosion resistance and good lubricating performance of the cutting fluid are realized due to the addition of the nano-graphite; the abrasion resistance, dispersibility, lubricating performance and film-forming performance of the cutting fluid are further enhanced due to the added auxiliaries. Thus, a layer of protective films can be formed on the surface of a machined workpiece under the synergy of the cutting fluid with a surfactant, so that the workpiece is prevented from being rusted by the air. The cutting fluid is suitable for ferrous metals, aluminum-magnesium alloys and other various types of metals. As a result, the cutting fluid is wide in application range.

Water-based multifunctional cutting fluid with excellent lubricating and cooling performance and preparation method thereof

The invention discloses an excellent-antiwear-effect water-based cutting fluid. The invention is characterized in that the cutting fluid is prepared from the following raw materials in parts by weight: 1-2 parts of amide stearate, 2-3 parts of benzotriazole, 4.5-6.5 parts of titanium carbide, 2-3 parts of high-base-number sulfurized calcium alkyl phenate, 4-6 parts of polysorbate-80, 2-3 parts of triethanolamine borate, 1-2 parts of sulfurized isobutylene, 4-6 parts of silicon carbide, 2-3 parts of potassium metaborate, 5-7 parts of assistant and 200 parts of deionized water. By using the grinding technique, the titanium carbide, silicon carbide and surfactant are combined, so that the grinding material is dispersed uniformly and has uniform quality; and the assistant is combined to enhance the wear resistance, dispersity, lubricating property and film formation property, and a protective film is formed on the workpiece surface to protect the workpiece from corrosion. Due to the adoption of the water-based formula, the cutting fluid has the advantages of excellent lubricating property, excellent rust resistance, excellent cooling property and excellent cleaning property, and enhances the surface smoothness of the workpiece after being used for processing.

Excellent-antiwear-effect water-based cutting fluid and preparation method thereof

The invention discloses a nanometer ceramic and graphene compound paint for an outdoor lamp and a preparation method thereof. The paint is prepared from, by weight, 30-40 parts of aqueous inorganic nanometer ceramic resin, 3-6 parts of graphene, 8-12 parts of ultra-fine powder aluminum oxide, 12-27 parts of nanometer filler, 1-3 parts of an antistatic agent, 2-5 parts of a film-forming auxiliary, 0.6-1.2 parts of stabilizer, 10-15 parts of a curing agent, 0.3-0.8 part of a defoaming agent, 0.3-0.6 part of UV absorbent, 5-10 parts of thickener and 13-19 parts of deionized water and alcohol solvent. The nanometer ceramic and graphene compound paint has high heat conductivity and large cooling surface area, has good heat stability, chemical stability and weather resistance, has excellent mechanical strength and toughness, and has the advantages of being waterproof, resistant to ultraviolet, mildewproof, dustproof (self-cleaning), insulating, flame-retardant and resistant to high temperature. The preparation method is simple, and the paint is environmentally friendly; the paint is sprayed to an LED lamp radiator and cured, so cooling performance of the LED lamp radiator can be improved, and the service life of a lamp is prolonged.

Nanometer ceramic and graphene compound paint for outdoor lamp and preparation method thereof

Provided is a cutting fluid containing waste engine oil. The cutting fluid is prepared from the following raw materials, by weight, 12-14 parts of waste engine oil, 1-2 parts of triethanolamine, 4-6 parts of amino-acid ester, 2-3 parts of phytic acid, 2-3 parts of dodecyl dimethyl benzyl ammonium chloride, 1-2 parts of nanoscale graphite micropowder, 14-16 parts of diethylene glycol monobutyl ether, 5-8 parts of propylene glycol, 1-2 parts of sodium laurate, 6-8 parts of auxiliary agents and 200 parts of water. Through application of nanoscale graphite micropowder, the cutting fluid has excellent lubricating property and extreme pressure resistance. Through application of waste engine oil, the cost is lowered. The cutting fluid has good antirust performances, contains no substances of sodium salt, phenol, chlorinated paraffin, mineral oil and the like, has no damage to human body, and is a environmentally friendly and green product.

Cutting fluid containing waste engine oil and preparation method therefor

A multifunctional extreme-pressure antiwear cutting fluid is prepared form the following raw materials: by weight, 1-2 parts of diethanolamine, 3-4 parts of boric acid ester, 2-3 parts of borax, 4-5 parts of sebacic acid, 1-2 parts of petroleum sodium sulfonate, 2-3 parts of molybdenum disulfide, 2-3 parts of methylparaben, 1-2 parts of sodium metaborate, 0.8-1.2 parts of fatty alcohol polyoxyethylene ether, 0.05-0.1 part of lanthanum acetate, 12-14 parts of rapeseed oil, 6-8 parts of an additive and 200 parts of water; the multifunctional extreme-pressure antiwear cutting fluid, by use of the boric acid ester, the molybdenum disulfide, the lanthanum acetate and the rapeseed oil, has good extreme pressure property, wear resistance and lubricity, the service life of the cutting fluid and a machine tool is prolonged, and the multifunctional extreme-pressure antiwear cutting fluid has good rust resistance to ferrous metals and copper and other non-ferrous metals, is wide in use, is a multifunctional cutting fluid, and at the same time has strong inhibitory effects on bacteria and mould.

Multifunctional extreme-pressure antiwear cutting fluid and preparation method thereof

The invention discloses an industrial powder metallurgy tool, which is characterized by being made of the following raw materials in parts by weight: 12-13 parts of titanium carbide, 30-32 parts of tool steel powder, 2-3 parts of tantalum carbide, 9-10 parts of tungsten carbide, 4-5 parts of diamond powder, 1-2 parts of graphite, 3-4 parts of ZrO2, 4-5 parts of SiO2, 1-2 parts of barium sulfate, 12-13 parts of iron, 4-5 parts of cobalt, 2-3 parts of chlorinated paraffin and 3- parts of dispersion phase. In the industrial powder metallurgy tool, the dispersion phase is added, so that alloy powder is uniformly dispersed, the longitudinal-transverse uniformity of the internal organizational structure of a product is ensured, the abrasion resistance is improved, and the service life of the product is prolonged; the tool disclosed by the invention has the advantages of high hardness, high abrasion resistance, remarkable heat stability, heat conductivity, corrosion resistance and oxidation resistance, accuracy in machining, increase in the production efficiency, safety, environmental friendliness and the like.

Industrial powder metallurgy tool and manufacturing method thereof

The invention discloses a composite centrifugal casting method of a sealing ring. The composite centrifugal casting method comprises the following operation steps: (1) a casting die is manufactured according to a sealing ring to be cast, the casting allowances of the outer surface, the upper surface and the lower surface of a casting are all 8-10 mm, the casting allowance of the inner surface is 18-26 mm, a coating is coated on the inner surface of a die cavity and comprises the following raw materials in parts by weight: 50-55 parts of zircon power, 2-4 parts of flaky graphite powder, 0.3-0.6 part of coal tar and 30-35 parts of silica sol. The outer layer of the sealing ring has excellent wearing resistance and rigidity; the material comprehensive utilization rate of the outer side, the middle and the core part of the sealing ring is improved by more than 10 percent; the service life is prolonged by more than 30 percent in comparison with the static casting process; the metal feeding effect is good; the outer-layer tissue of the casting is compact.

Composite centrifugal casting method of sealing ring

The invention discloses a powder metallurgy material of a gasoline engine piston and a preparation method of the powder metallurgy material. The powder metallurgy material is characterized by being prepared by the following raw materials in parts by weight: 94-96 parts of iron powder, 1.2-1.4 parts of copper powder, 0.4-0.6 part of graphite, 1.2-1.4 parts of molybdenum disulfide, 0.2-0.3 part of vanadium, 2.5-3.0 parts of zinc stearate, 1.2-1.6 parts of microcrystalline wax, 1.2-1.5 parts of engine oil, 0.06-0.09 part of Zr, 0.2-0.4 part of Li, 0.06-0.08 part of Ba, 1-1.2 parts of SiO2, 0.25-0.35 part of V2O5, 0.45-0.6 part of dimolybdenum boride, 2.1-2.5 parts of aluminum oxide and 2-3 parts of a dispersant. The piston manufactured from the powder metallurgy material is high in hardness, good in wear resistance, dense in tissue and excellent in structure rigidity, hardness, fatigue resistance and tensile strength, and has a good microstructure and very few holes; and a metallographic structure is improved in combination with rare earth elements.

Xie Yong

Papers

Cutting fluid containing waste engine oil and preparation method therefor

Multifunctional extreme-pressure antiwear cutting fluid and preparation method thereof

Industrial powder metallurgy tool and manufacturing method thereof

Composite centrifugal casting method of sealing ring

Powder metallurgy material of gasoline engine piston and preparation method of powder metallurgy material