144results about How to "Long lubrication life" patented technology

The invention relates to a lubricating grease, comprising 40-95 wt% of a lubricating base oil, 1-59 wt% of a composite zirconium based densifier and 1-59 wt% of bipolyurea; and the composite zirconium based densifier is a compound zirconium soap generated from reaction of higher aliphatic acid, aromatic acid, water and zirconium alkoxide. The invention also relates to a preparation method of the lubricating grease. The method comprises the following steps: subjecting the zirconium alkoxide, higher aliphatic acid and aromatic acid to a first contact reaction in lubricating base oil at 60-120 DEG C; then subjecting the mixture obtained from the first contact reaction and water to a second contact reaction at 85-100 DEG C, and heating the products obtained from the second contact reaction for dehydration; and introducing the bipolyurea into the obtained reaction products. The lubricating grease provided by the invention has high drop point, excellent colloidal stability, and excellent extreme pressure wear resistance and ball bearing lubrication life.

The invention provides a metal graphene composite material and a preparation method thereof, relating to the field of materials. The metal graphene composite material comprises a metal substrate, a copper infiltration layer and a graphene film, wherein the metal substrate is in metallurgical bonding with the copper infiltration layer; the graphene film grows on the outer surface of the copper infiltration layer. The preparation method of the metal graphene composite material comprises the following steps: forming the copper infiltration layer on the surface of the substrate, and forming the graphene film on the surface of the copper infiltration layer. According to the metal graphene composite material, because graphene has excellent mechanical property, the lubricating performance of the graphene film on the surface of pure metals or alloys is greatly improved, the friction force on the surfaces of the pure metals or alloys is reduced, and the lubricating life of the pure metals or alloys is prolonged. According to the preparation method of the metal graphene composite material, graphene can grow on large-area metal materials, a copper foil does not need to be corroded, the preparation process is simple, the production cost is low, and industrial production is convenient.

The invention relates to a honeycomb-shaped polygonal self-lubricating gear. Honeycomb-shaped grooves, strip-shaped grooves, middle strip-shaped chip grooves and top strip-shaped chip grooves are processed in a tooth surface of the honeycomb-shaped polygonal self-lubricating gear; the honeycomb-shaped grooves are positioned in the middle of the tooth surface, and are filled with self-lubricating materials; the strip-shaped grooves are positioned in the top of the tooth surface, and are filled with the self-lubricating materials; and the middle strip-shaped chip grooves and the top strip-shaped chip grooves separately penetrate through the whole tooth surface and are formed in the top of the tooth surface, are distributed in a spaced mode, and are beneficial for chip removal. The invention discloses the honeycomb-shaped polygonal self-lubricating gear which is inspired by a honeycomb shape based on the bionic idea; compared with an existing gear, the honeycomb-shaped polygonal self-lubricating gear has self-lubricating characteristics, does not need to additionally add media such as lubricating oil and lubricating grease, enriches a gear lubricating mode, and can meet normal operation when the gear is under extreme working conditions such as an oil-free working condition and an oil-lack working condition.

The invention relates to a ball screw (1) comprising a ball caster spindle (3) and a driven spindle nut (2) arranged thereon. Balls (7) are arranged in a continuously rotatable manner in at least one endless ball channel (8), said ball channel (8) comprising a load section (9) which is wound around the ball caster spindle (3) and defined by ball tracks (10, 11) of the ball caster spindle (3) and the spindle nut (2), and a load-free recycling section (12) which continuously connects the beginning and end thereof. A regreasing device (15) which is arranged on the spindle nut (2) in a rotationally fixed manner supplies lubricant to the ball channel (8) using centrifugal force.

A grease composition for a rolling bearing for a motor to support a rotor of the motor, containing a pentaerythritol ester base oil with a kinematic viscosity at 40° C. of 20 to 55 mm²/s; 7 to 13 mass % of a diurea thickener represented by formula (A) where each R group is defined; and a rust inhibitor mixture selected from the group consisting of polyol ester type rust inhibitors and organic sulfonate type rust inhibitors. The grease composition can prevent a peculiar noise from being produced at low temperatures, satisfy the low torque performance over a wide temperature range, extend the bearing lubrication life even under the circumstances of high temperature, and exhibit excellent rust inhibiting effect on varnish.

The invention provides a membrane-grease composite lubrication method and relates to a lubrication method. The invention aims to solve problems that requirements of high speed high load working condition and changing working conditions cannot be met when prior solid membrane lubrication or grease lubrication is used separately and abrasion is easy to occur and the lubrication effect is poor when the solid membrane is used for lubrication. The method includes performing pre-treatment on work piece surface; processing a solid lubrication membrane on the work piece surface; coating the surface of the solid lubrication membrane with lubrication grease or injecting lubrication grease to the a friction interface of the solid lubrication membrane, so that membrane-grease composite lubrication is realized. According to the invention, the solid lubrication membrane is spaced with grease lubrication, so that abrasion of the solid lubrication membrane is slow down, the solid lubrication membrane is protected and the lubrication service lifetime is prolonged. Mutual complementation in lubrication is realized through the combination of solid membrane lubrication suitable for low-speed heavy duty and a grease lubrication method suitable for high speed low duty. Through solid lubrication membrane carrying, lubrication coordination of lubrication and vibration absorption of the lubrication grease is realized. The lubrication effect is good.

The invention provides a composite zirconium-based hexaurea lubrication grease and its preparation method. The lubrication grease comprises 1-59wt% of composite zirconium, 1-59wt% of hexaurea and 40-95wt% of lubrication base oil, wherein the composite zirconium comprises zirconyl higher fatty acid salt and zirconyl acid salt having a low molecular weight. The lubrication grease simultaneously comprises a composite zirconium thickening agent and a hexaurea compound. The lubrication grease has the advantages of excellent extreme-pressure wear resistance, long lubrication life, excellent water resistance, excellent colloid stability, high dropping point, excellent heat stability and the like.

The invention discloses a layered zirconium phosphate and molybdenum disulfide compound extreme pressure grease and a preparation method thereof. The grease comprises the following components by weight percent: 90-96% of base grease, 2.0-7.0% of alpha-layered zirconium phosphate and molybdenum disulfide mixed powder, 1.0-3.0% of an extreme pressure agent and 1.0-2.0% of an antioxidant. The preparation method comprises the following steps: adding 2.0-7.0% of alpha-layered zirconium phosphate and molybdenum disulfide mixed powder, 1.0-3.0% of an extreme pressure agent and 1.0-2.0% of an antioxidant into 90-96% of base grease and then rolling and grinding for 3 times by using a three-roller grinder, thereby acquiring a grease product. The grease disclosed by the invention is capable of promoting the bearing capacity and anti-grinding capacity of the grease. After the grease is mixed with the extreme pressure agent, the grease can meet the rigorous working conditions, such as high impact load.

The invention provides calcium naphthenate base octa-polyurea lubricating grease and a preparation method thereof. The grease comprises the following components in percentage by the weight of the lubricating grease: (1) 10 to 70% of non-Newtonian calcium naphthenate; (2) 0.5 to 30% of octa-polyurea; (3) 10 to 80% of lubricating base oil. The calcium naphthenate base octa-polyurea lubricating grease is prepared by the following steps: converting non-Newtonian calcium naphthenate and then subjecting the conversion product to carry out reactions with diisocyanate, diamine, and monoamine. The lubricating grease provided by the invention has an excellent extreme pressure anti-wear property and a long lubricating service life, and at the same time has the excellent properties of adhesiveness, waterproofness, colloid stability, high dropping point, thermal stability, corrosion resistance, and salt smog resistance.

The invention discloses composite calcium naphthenate-based lubricating grease which is characterized by including following components, on the basis of the weight of the lubricating grease, 20-70 wt% of non-Newtonian calcium naphthenate, 1-10 wt% of a calcium salt of a higher fatty acid and 25-70 wt% of a basic oil. An infrared spectrogram of the non-Newtonian calcium naphthenate has a characteristic absorption peak of aragonite-type calcium carbonate. The invention also discloses a preparation method of the composite calcium naphthenate-based lubricating grease and the composite calcium naphthenate-based lubricating grease prepared through the same. The composite calcium naphthenate-based lubricating grease has excellent anti-corrosion property and anti-salt fog property, and has performances comprising a high-temperature-resistant performance, a water-resistant performance, an adhesive performance, a colloid stability and the like, which are better than those of composite calcium sulfonate-based lubricating grease. The composite calcium naphthenate-based lubricating grease has a longer lubricating service life. The preparation method is simple, environmental-protective, low in cost and stable in product quality.

The invention provides calcium naphthenate-based hexapolyurea lubricating grease and a preparation method thereof. On a basis of the lubricating grease weight, the lubricating grease comprises the following components: 1) 10-70% of non-newtonian calcium naphthenate; 2) 0.5-30% of hexapolyurea; 3) 10-80% of lubricating base oil. The calcium naphthenate-based hexapolyurea lubricating grease is obtained by converting newtonian calcium naphthenate, and reacting with diisocyanate, diamine, and monamine. The lubricating grease of the invention has excellent extreme-pressure abrasion resistance and long lubricating life, and also has excellent adhesiveness, water resistance, colloid stability, high dropping point, thermal stability, corrosion resistance, salt mist resistance, and the like.

The invention discloses calcium naphthenate zirconium-based hexurea lubricating grease. The lubricating grease comprises the following components in percentage by weight: 10-70 percent of non-newton calcium naphthenate, 1-10 percent of zirconium salt of higher fatty acid, 1-15 percent of zirconium salt of micromolecular inorganic acid and/or lower fatty acid, 0.5-30 percent of a polyurea compound and 10-80 percent of base oil, wherein the zirconium salt of higher fatty acid is prepared by reaction of higher fatty acid with a component A, and the zirconium salt of micromolecular inorganic acid and/or lower fatty acid is prepared by reaction of micromolecular inorganic acid and/or lower fatty acid with the component A; the component A is at least one of oxide of zirconium, hydroxide of zirconium and zirconium alkoxide; and the polyurea compound is a hexurea compound. The invention further discloses a method for preparing the lubricating grease and the lubricating grease prepared by the method. The lubricating grease has good mechanical stability, good water resistance, good adhesion, salt mist resistance, colloid stability, extreme pressure antiwear property and the like, and has a long lubricating life.